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.idea/.gitignore

@@ -1,3 +0,0 @@
-# Default ignored files
-/shelf/
-/workspace.xml

.idea/.name

@@ -1 +0,0 @@
-ImAndroid

.idea/vcs.xml

@@ -1,7 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
   <component name="VcsDirectoryMappings">
-    <mapping directory="$PROJECT_DIR$/.." vcs="Git" />
-    <mapping directory="$PROJECT_DIR$" vcs="Git" />
+    <mapping directory="" vcs="Git" />
   </component>
 </project>

SzyxBaseSdk/build.gradle

@@ -7,7 +7,7 @@ android {
     compileSdk 33
 
     defaultConfig {
-        minSdk 24
+        minSdk 26
         targetSdk 33
 
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"

SzyxImSdk/build.gradle

@@ -1,19 +1,22 @@
 plugins {
     id 'com.android.library'
+    id "io.sentry.android.gradle" version "3.4.2"
 }
 
+def versionCode = 1
+def versionName = "0.0.1.011"
 android {
     namespace 'cn.org.bjca.trust.android.lib.im'
     compileSdk 33
 
     defaultConfig {
-        minSdk 24
+        minSdk 26
         targetSdk 33
 
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
         consumerProguardFiles "consumer-rules.pro"
-        versionCode 1
-        versionName '1.0.0'
+
+        buildConfigField("String", "versionName", "\"${versionName}\"")
     }
 
     buildTypes {
@@ -31,9 +34,25 @@ android {
 dependencies {
 
     api project(path: ':SzyxBaseSdk')
+
     implementation 'androidx.appcompat:appcompat:1.4.1'
     implementation 'com.google.android.material:material:1.5.0'
     testImplementation 'junit:junit:4.13.2'
     androidTestImplementation 'androidx.test.ext:junit:1.1.3'
     androidTestImplementation 'androidx.test.espresso:espresso-core:3.4.0'
+
+    //数据库相关
+    implementation("androidx.room:room-runtime:2.5.0")
+    annotationProcessor ("androidx.room:room-compiler:2.5.0")
+
+    // 网络相关
+    //Rxjava
+    implementation 'io.reactivex.rxjava2:rxandroid:2.1.0'
+    //Retrofit
+    implementation 'com.squareup.retrofit2:retrofit:2.9.0'
+    implementation 'com.squareup.retrofit2:converter-gson:2.9.0'
+    implementation 'com.squareup.retrofit2:adapter-rxjava2:2.4.0'
+    implementation 'com.squareup.okhttp3:logging-interceptor:4.9.1'
+
+
 }

SzyxImSdk/src/main/AndroidManifest.xml

@@ -1,4 +1,32 @@
 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android">
 
+    <application>
+        <!-- Required: set your sentry.io project identifier (DSN) -->
+        <meta-data
+            android:name="io.sentry.dsn"
+            android:value="https://e0308587cb2041d4909b97f3e4549d8d@sentry.51trust.net/9" />
+
+        <!-- enable automatic breadcrumbs for user interactions (clicks, swipes, scrolls) -->
+        <meta-data
+            android:name="io.sentry.traces.user-interaction.enable"
+            android:value="true" />
+        <!-- enable screenshot for crashes -->
+        <meta-data
+            android:name="io.sentry.attach-screenshot"
+            android:value="true" />
+        <!-- enable view hierarchy for crashes -->
+        <meta-data
+            android:name="io.sentry.attach-view-hierarchy"
+            android:value="true" />
+
+        <!-- enable the performance API by setting a sample-rate, adjust in production env -->
+        <meta-data
+            android:name="io.sentry.traces.sample-rate"
+            android:value="1.0" />
+        <!-- enable profiling when starting transactions, adjust in production env -->
+        <meta-data
+            android:name="io.sentry.traces.profiling.sample-rate"
+            android:value="1.0" />
+    </application>
 </manifest>

SzyxImSdk/src/main/java/cn/org/bjca/trust/android/lib/im/SZYXDbHelper.java

@@ -0,0 +1,25 @@
+package cn.org.bjca.trust.android.lib.im;
+
+import android.content.Context;
+
+import androidx.room.Room;
+
+import cn.org.bjca.trust.android.lib.im.db.ImDatabase;
+
+public class SZYXDbHelper {
+
+    private static ImDatabase dataBase;
+
+    public static ImDatabase get() {
+        return dataBase;
+    }
+
+    public static void get(Context context) {
+        if (null == dataBase) {
+            dataBase = Room.databaseBuilder(context, ImDatabase.class, "szyx-im-db")
+//        .addMigrations(MIGRATION_1_2)
+                    .allowMainThreadQueries() //允许在主线程 操作db
+                    .build();
+        }
+    }
+}

SzyxImSdk/src/main/java/cn/org/bjca/trust/android/lib/im/SzyxPush.java

@@ -1,12 +1,12 @@
 package cn.org.bjca.trust.android.lib.im;
 
 import cn.org.bjca.trust.android.lib.im.kit.SdkInterface;
-import cn.org.bjca.trust.android.lib.im.manager.PushSdkManager;
+import cn.org.bjca.trust.android.lib.im.manager.SZYXImManager;
 
 public class SzyxPush {
 
     private static final class SdkInterfaceHolder {
-        static final SdkInterface instance = new PushSdkManager();
+        static final SdkInterface instance = new SZYXImManager();
     }
 
     public static SdkInterface getInstance() {

SzyxImSdk/src/main/java/cn/org/bjca/trust/android/lib/im/cfg/Constant.java

@@ -0,0 +1,15 @@
+package cn.org.bjca.trust.android.lib.im.cfg;
+
+public class Constant {
+    public static final String BaseUrl = "https://221n3i2201.goho.co";
+
+    private static String sdkAppID;
+
+    public static void setSdkAppID(String sdkAppID) {
+        Constant.sdkAppID = sdkAppID;
+    }
+
+    public static String getSdkAppID() {
+        return sdkAppID;
+    }
+}

SzyxImSdk/src/main/java/cn/org/bjca/trust/android/lib/im/common/CommonHelper.java

@@ -0,0 +1,14 @@
+package cn.org.bjca.trust.android.lib.im.common;
+
+import android.util.Log;
+
+import java.util.Arrays;
+
+public class CommonHelper {
+    public static String anyToString(Object obj) {
+        if (null == obj) return "";
+        else if (obj.getClass().getTypeName().equals("java.lang.String[]")) {
+            return Arrays.toString((String[]) obj);
+        } else return obj.toString();
+    }
+}

SzyxImSdk/src/main/java/cn/org/bjca/trust/android/lib/im/common/DeviceHelper.java

@@ -0,0 +1,56 @@
+package cn.org.bjca.trust.android.lib.im.common;
+
+import android.os.Build;
+import android.util.Log;
+
+import java.lang.reflect.Field;
+import java.util.List;
+
+import cn.org.bjca.trust.android.lib.im.SZYXDbHelper;
+import cn.org.bjca.trust.android.lib.im.db.device.DeviceEntity;
+
+public class DeviceHelper {
+    public static DeviceEntity getDevice() {
+        List<DeviceEntity> entityList = SZYXDbHelper.get().deviceDao().getAll();
+        if (entityList.size() == 0) {
+            DeviceEntity device = new DeviceEntity();
+
+            Field[] fields = Build.class.getDeclaredFields();
+            for (Field field : fields) {
+                try {
+                    switch (field.getName()) {
+                        case "MANUFACTURER":
+                            device.setManufacturer(CommonHelper.anyToString(field.get(null)));
+                            break;
+                        case "BRAND":
+                            device.setBrand(CommonHelper.anyToString(field.get(null)));
+                            break;
+                        case "MODEL":
+                            device.setModel(CommonHelper.anyToString(field.get(null)));
+                            break;
+                        case "CPU_ABI":
+                            device.setCpuAbi(CommonHelper.anyToString(field.get(null)));
+                            break;
+                        case "FINGERPRINT":
+                            device.setFingerprint(CommonHelper.anyToString(field.get(null)));
+                            device.setDeviceId(CommonHelper.anyToString(field.get(null)));
+                            break;
+                        case "SUPPORTED_32_BIT_ABIS":
+                            device.setSupported32BitAbis(CommonHelper.anyToString(field.get(null)));
+                            break;
+                        case "SUPPORTED_64_BIT_ABIS":
+                            device.setSupported64BitAbis(CommonHelper.anyToString(field.get(null)));
+                            break;
+                        case "SUPPORTED_ABIS":
+                            device.setSupportedAbis(CommonHelper.anyToString(field.get(null)));
+                            break;
+                    }
+                } catch (Exception e) {
+
+                }
+            }
+            SZYXDbHelper.get().deviceDao().insertAll(device);
+            return device;
+        } else return entityList.get(0);
+    }
+}

SzyxImSdk/src/main/java/cn/org/bjca/trust/android/lib/im/db/BaseEntity.java

@@ -0,0 +1,16 @@
+package cn.org.bjca.trust.android.lib.im.db;
+
+import androidx.room.PrimaryKey;
+
+public class BaseEntity {
+    @PrimaryKey(autoGenerate = true)
+    private int _uid;
+
+    public int get_uid() {
+        return _uid;
+    }
+
+    public void set_uid(int _uid) {
+        this._uid = _uid;
+    }
+}

SzyxImSdk/src/main/java/cn/org/bjca/trust/android/lib/im/db/ImDatabase.java

@@ -0,0 +1,14 @@
+package cn.org.bjca.trust.android.lib.im.db;
+
+import androidx.room.Database;
+import androidx.room.RoomDatabase;
+
+import cn.org.bjca.trust.android.lib.im.db.device.DeviceDao;
+import cn.org.bjca.trust.android.lib.im.db.device.DeviceEntity;
+
+@Database(entities = {DeviceEntity.class}, version = 1, exportSchema = false)
+public abstract class ImDatabase extends RoomDatabase {
+
+    public abstract DeviceDao deviceDao();
+
+}

SzyxImSdk/src/main/java/cn/org/bjca/trust/android/lib/im/db/device/DeviceDao.java

@@ -0,0 +1,25 @@
+package cn.org.bjca.trust.android.lib.im.db.device;
+
+import androidx.room.Dao;
+import androidx.room.Delete;
+import androidx.room.Insert;
+import androidx.room.Query;
+import androidx.room.Update;
+
+import java.util.List;
+
+@Dao
+public interface DeviceDao {
+
+    @Query("SELECT * FROM device")
+    List<DeviceEntity> getAll();
+
+    @Insert
+    void insertAll(DeviceEntity... devices);
+
+    @Update
+    void update(DeviceEntity device);
+
+    @Delete
+    void delete(DeviceEntity device);
+}

SzyxImSdk/src/main/java/cn/org/bjca/trust/android/lib/im/db/device/DeviceEntity.java

@@ -0,0 +1,125 @@
+package cn.org.bjca.trust.android.lib.im.db.device;
+
+import androidx.annotation.NonNull;
+import androidx.room.ColumnInfo;
+import androidx.room.Entity;
+
+import cn.org.bjca.trust.android.lib.im.db.BaseEntity;
+
+@Entity(tableName = "device")
+public class DeviceEntity extends BaseEntity {
+    @ColumnInfo(name = "device_id")
+    private String deviceId;
+    // 厂商 MANUFACTURER
+    @ColumnInfo(name = "manufacturer")
+    private String manufacturer;
+    // 品牌 BRAND
+    @ColumnInfo(name = "brand")
+    private String brand;
+    // 型号 MODEL
+    @ColumnInfo(name = "model")
+    private String model;
+    // cpu CPU_ABI
+    @ColumnInfo(name = "cpu_abi")
+    private String cpuAbi;
+    // 指纹  FINGERPRINT
+    @ColumnInfo(name = "fingerprint")
+    private String fingerprint;
+    // SUPPORTED_32_BIT_ABIS
+    @ColumnInfo(name = "supported_32_bit_abis")
+    private String supported32BitAbis;
+    // SUPPORTED_64_BIT_ABIS
+    @ColumnInfo(name = "supported_64_bit_abis")
+    private String supported64BitAbis;
+    // SUPPORTED_ABIS
+    @ColumnInfo(name = "supported_abis")
+    private String supportedAbis;
+
+    public String getDeviceId() {
+        return deviceId;
+    }
+
+    public void setDeviceId(String deviceId) {
+        this.deviceId = deviceId;
+    }
+
+    public String getManufacturer() {
+        return manufacturer;
+    }
+
+    public void setManufacturer(String manufacturer) {
+        this.manufacturer = manufacturer;
+    }
+
+    public String getBrand() {
+        return brand;
+    }
+
+    public void setBrand(String brand) {
+        this.brand = brand;
+    }
+
+    public String getModel() {
+        return model;
+    }
+
+    public void setModel(String model) {
+        this.model = model;
+    }
+
+    public String getCpuAbi() {
+        return cpuAbi;
+    }
+
+    public void setCpuAbi(String cpuAbi) {
+        this.cpuAbi = cpuAbi;
+    }
+
+    public String getFingerprint() {
+        return fingerprint;
+    }
+
+    public void setFingerprint(String fingerprint) {
+        this.fingerprint = fingerprint;
+    }
+
+    public String getSupported32BitAbis() {
+        return supported32BitAbis;
+    }
+
+    public void setSupported32BitAbis(String supported32BitAbis) {
+        this.supported32BitAbis = supported32BitAbis;
+    }
+
+    public String getSupported64BitAbis() {
+        return supported64BitAbis;
+    }
+
+    public void setSupported64BitAbis(String supported64BitAbis) {
+        this.supported64BitAbis = supported64BitAbis;
+    }
+
+    public String getSupportedAbis() {
+        return supportedAbis;
+    }
+
+    public void setSupportedAbis(String supportedAbis) {
+        this.supportedAbis = supportedAbis;
+    }
+
+    @NonNull
+    @Override
+    public String toString() {
+        return "DeviceEntity{" +
+                "deviceId='" + deviceId + '\'' +
+                ", manufacturer='" + manufacturer + '\'' +
+                ", brand='" + brand + '\'' +
+                ", model='" + model + '\'' +
+                ", cpuAbi='" + cpuAbi + '\'' +
+                ", fingerprint='" + fingerprint + '\'' +
+                ", supported32BitAbis='" + supported32BitAbis + '\'' +
+                ", supported64BitAbis='" + supported64BitAbis + '\'' +
+                ", supportedAbis='" + supportedAbis + '\'' +
+                '}';
+    }
+}

SzyxImSdk/src/main/java/cn/org/bjca/trust/android/lib/im/http/HeaderInterceptor.java

@@ -0,0 +1,23 @@
+package cn.org.bjca.trust.android.lib.im.http;
+
+import androidx.annotation.NonNull;
+
+import java.io.IOException;
+
+import cn.org.bjca.trust.android.lib.im.BuildConfig;
+import cn.org.bjca.trust.android.lib.im.cfg.Constant;
+import okhttp3.Interceptor;
+import okhttp3.Response;
+
+public class HeaderInterceptor implements Interceptor {
+    @NonNull
+    @Override
+    public Response intercept(@NonNull Chain chain) throws IOException {
+
+        return chain.proceed(chain.request().newBuilder()
+                .header("AppID", Constant.getSdkAppID())
+                .addHeader("Version", BuildConfig.versionName)
+                .addHeader("OsType", "1")
+                .build());
+    }
+}

SzyxImSdk/src/main/java/cn/org/bjca/trust/android/lib/im/http/HttpManage.java

@@ -0,0 +1,47 @@
+package cn.org.bjca.trust.android.lib.im.http;
+
+
+import java.util.concurrent.TimeUnit;
+
+import cn.org.bjca.trust.android.lib.im.cfg.Constant;
+import okhttp3.OkHttpClient;
+import okhttp3.logging.HttpLoggingInterceptor;
+import retrofit2.Retrofit;
+import retrofit2.adapter.rxjava2.RxJava2CallAdapterFactory;
+import retrofit2.converter.gson.GsonConverterFactory;
+
+public class HttpManage {
+
+    private static Retrofit retrofit;
+    private static OkHttpClient okHttpClient;
+
+
+    public static <T> T getApi(final Class<T> service) {
+
+        if (null == okHttpClient) {
+            OkHttpClient.Builder builder = new OkHttpClient.Builder();
+            builder.hostnameVerifier((s, sslSession) -> true);
+            HttpLoggingInterceptor loggingInterceptor = new HttpLoggingInterceptor();
+            loggingInterceptor.setLevel(HttpLoggingInterceptor.Level.BODY);
+
+            okHttpClient = builder
+                    .connectTimeout(15, TimeUnit.SECONDS)
+                    .addInterceptor(loggingInterceptor)
+                    .addInterceptor(new HeaderInterceptor())
+                    .build();
+        }
+
+
+        if (null == retrofit) {
+            retrofit = new Retrofit.Builder()
+                    .baseUrl(Constant.BaseUrl)
+                    .client(okHttpClient)
+                    .addConverterFactory(GsonConverterFactory.create())
+                    .addCallAdapterFactory(RxJava2CallAdapterFactory.create())
+                    .build();
+        }
+
+
+        return retrofit.create(service);
+    }
+}

SzyxImSdk/src/main/java/cn/org/bjca/trust/android/lib/im/http/HttpResult.java

@@ -0,0 +1,37 @@
+package cn.org.bjca.trust.android.lib.im.http;
+
+public class HttpResult<T> {
+    /**
+     * "code": 200
+     * "message": "success"
+     * data :
+     */
+
+    private int code;
+    private String msg;
+    private T data;
+
+    public int getCode() {
+        return code;
+    }
+
+    public void setCode(int code) {
+        this.code = code;
+    }
+
+    public String getMsg() {
+        return msg;
+    }
+
+    public void setMsg(String msg) {
+        this.msg = msg;
+    }
+
+    public T getData() {
+        return data;
+    }
+
+    public void setData(T data) {
+        this.data = data;
+    }
+}

SzyxImSdk/src/main/java/cn/org/bjca/trust/android/lib/im/manager/PushSdkManager.java

@@ -1,60 +0,0 @@
-package cn.org.bjca.trust.android.lib.im.manager;
-
-import android.content.Context;
-
-import cn.org.bjca.trust.android.lib.im.kit.IMSDKCallback;
-import cn.org.bjca.trust.android.lib.im.kit.IMSDKListener;
-import cn.org.bjca.trust.android.lib.im.kit.MsgListener;
-import cn.org.bjca.trust.android.lib.im.kit.SdkInterface;
-
-public class PushSdkManager implements SdkInterface {
-    @Override
-    public void addIMSDKListener(IMSDKListener listener) {
-
-    }
-
-    @Override
-    public void removeIMSDKListener(IMSDKListener listener) {
-
-    }
-
-    @Override
-    public void init(Context context, String sdkAppID, IMSDKCallback callback) {
-
-    }
-
-    @Override
-    public void login(String userID, String userSig, IMSDKCallback callback) {
-
-    }
-
-    @Override
-    public void logout(IMSDKCallback callback) {
-
-    }
-
-    @Override
-    public void addMsgListener(MsgListener listener) {
-
-    }
-
-    @Override
-    public void removeMsgListener(MsgListener listener) {
-
-    }
-
-    @Override
-    public void sendMsgForTextToC(String toUserId, String text, IMSDKCallback callback) {
-
-    }
-
-    @Override
-    public void sendMsgForTextToG(String toGroupId, String text, IMSDKCallback callback) {
-
-    }
-
-    @Override
-    public String getVersion() {
-        return null;
-    }
-}

SzyxImSdk/src/main/java/cn/org/bjca/trust/android/lib/im/manager/SZYXImManager.java

@@ -0,0 +1,88 @@
+package cn.org.bjca.trust.android.lib.im.manager;
+
+import android.content.Context;
+import android.util.Log;
+
+import cn.org.bjca.trust.android.lib.im.BuildConfig;
+import cn.org.bjca.trust.android.lib.im.SZYXDbHelper;
+import cn.org.bjca.trust.android.lib.im.cfg.Constant;
+import cn.org.bjca.trust.android.lib.im.common.DeviceHelper;
+import cn.org.bjca.trust.android.lib.im.http.HttpManage;
+import cn.org.bjca.trust.android.lib.im.kit.IMSDKCallback;
+import cn.org.bjca.trust.android.lib.im.kit.IMSDKListener;
+import cn.org.bjca.trust.android.lib.im.kit.MsgListener;
+import cn.org.bjca.trust.android.lib.im.kit.SdkInterface;
+import cn.org.bjca.trust.android.lib.im.repository.Service;
+import cn.org.bjca.trust.android.lib.im.repository.data.LoginData;
+import io.reactivex.android.schedulers.AndroidSchedulers;
+import io.reactivex.disposables.Disposable;
+import io.reactivex.schedulers.Schedulers;
+
+public class SZYXImManager implements SdkInterface {
+
+    private IMSDKListener imsdkListener;
+
+    @Override
+    public void addIMSDKListener(IMSDKListener listener) {
+        this.imsdkListener = listener;
+    }
+
+    @Override
+    public void removeIMSDKListener(IMSDKListener listener) {
+        this.imsdkListener = null;
+    }
+
+    @Override
+    public void init(Context context, String sdkAppID, IMSDKCallback callback) {
+        Constant.setSdkAppID(sdkAppID);
+        SZYXDbHelper.get(context);
+        DeviceHelper.getDevice();
+    }
+
+    @Override
+    public void login(String userID, String userSig, IMSDKCallback callback) {
+
+        Disposable d = HttpManage.getApi(Service.class)
+                .login(new LoginData(userID, userSig, DeviceHelper.getDevice()))
+                .subscribeOn(Schedulers.io())
+                .observeOn(AndroidSchedulers.mainThread())
+                .subscribe(httpResult -> {
+                    if (httpResult.getCode() == 200) {
+                        if (null != callback) callback.success();
+                        if (null != imsdkListener) imsdkListener.onConnecting();
+                    } else if (null != callback) callback.failed(1001, httpResult.getMsg());
+                }, throwable -> {
+                    if (null != callback) callback.failed(1001, throwable.getMessage());
+                });
+    }
+
+    @Override
+    public void logout(IMSDKCallback callback) {
+
+    }
+
+    @Override
+    public void addMsgListener(MsgListener listener) {
+
+    }
+
+    @Override
+    public void removeMsgListener(MsgListener listener) {
+
+    }
+
+    @Override
+    public void sendMsgForTextToC(String toUserId, String text, IMSDKCallback callback) {
+
+    }
+
+    @Override
+    public void sendMsgForTextToG(String toGroupId, String text, IMSDKCallback callback) {
+
+    }
+
+    @Override
+    public String getVersion() {
+        return BuildConfig.versionName;
+    }
+}

SzyxImSdk/src/main/java/cn/org/bjca/trust/android/lib/im/repository/Service.java

@@ -0,0 +1,20 @@
+package cn.org.bjca.trust.android.lib.im.repository;
+
+import cn.org.bjca.trust.android.lib.im.bean.UserInfo;
+import cn.org.bjca.trust.android.lib.im.http.HttpResult;
+import cn.org.bjca.trust.android.lib.im.repository.bean.LoginBean;
+import cn.org.bjca.trust.android.lib.im.repository.data.LoginData;
+import io.reactivex.Observable;
+import retrofit2.http.Body;
+import retrofit2.http.GET;
+import retrofit2.http.POST;
+import retrofit2.http.Path;
+
+public interface Service {
+
+    @GET("hello/{id}")
+    Observable<HttpResult<String>> test(@Path("id") String id);
+
+    @POST("user/v1/login")
+    Observable<HttpResult<LoginBean>> login(@Body LoginData loginData);
+}

SzyxImSdk/src/main/java/cn/org/bjca/trust/android/lib/im/repository/bean/LoginBean.java

@@ -0,0 +1,8 @@
+package cn.org.bjca.trust.android.lib.im.repository.bean;
+
+public class LoginBean {
+    private String host;
+    private String port;
+    private String clientId;
+    private String sign;
+}

SzyxImSdk/src/main/java/cn/org/bjca/trust/android/lib/im/repository/data/LoginData.java

@@ -0,0 +1,42 @@
+package cn.org.bjca.trust.android.lib.im.repository.data;
+
+import cn.org.bjca.trust.android.lib.im.db.device.DeviceEntity;
+
+public class LoginData {
+    private String userId;
+    private String userSig;
+    private DeviceEntity device;
+
+    public LoginData() {
+    }
+
+    public LoginData(String userId, String userSig, DeviceEntity device) {
+        this.userId = userId;
+        this.userSig = userSig;
+        this.device = device;
+    }
+
+    public String getUserId() {
+        return userId;
+    }
+
+    public void setUserId(String userId) {
+        this.userId = userId;
+    }
+
+    public String getUserSig() {
+        return userSig;
+    }
+
+    public void setUserSig(String userSig) {
+        this.userSig = userSig;
+    }
+
+    public DeviceEntity getDevice() {
+        return device;
+    }
+
+    public void setDevice(DeviceEntity device) {
+        this.device = device;
+    }
+}

app/build.gradle

@@ -8,7 +8,7 @@ android {
 
     defaultConfig {
         applicationId "cn.org.bjca.trust.android.imdemo"
-        minSdk 24
+        minSdk 26
         targetSdk 33
         versionCode 1
         versionName '1.0.0'
@@ -26,6 +26,9 @@ android {
         sourceCompatibility JavaVersion.VERSION_1_8
         targetCompatibility JavaVersion.VERSION_1_8
     }
+    buildFeatures {
+        viewBinding true
+    }
 }
 
 dependencies {
@@ -34,6 +37,9 @@ dependencies {
     implementation 'androidx.appcompat:appcompat:1.4.1'
     implementation 'com.google.android.material:material:1.5.0'
     implementation 'androidx.constraintlayout:constraintlayout:2.1.3'
+    implementation 'androidx.annotation:annotation:1.3.0'
+    implementation 'androidx.lifecycle:lifecycle-livedata-ktx:2.4.1'
+    implementation 'androidx.lifecycle:lifecycle-viewmodel-ktx:2.4.1'
     testImplementation 'junit:junit:4.13.2'
     androidTestImplementation 'androidx.test.ext:junit:1.1.3'
     androidTestImplementation 'androidx.test.espresso:espresso-core:3.4.0'

app/src/main/AndroidManifest.xml

@@ -1,6 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:tools="http://schemas.android.com/tools">
+    <uses-permission android:name="android.permission.INTERNET" />
 
     <application
         android:name=".MyApplication"
@@ -13,14 +14,18 @@
         android:theme="@style/Theme.ImAndroid"
         tools:targetApi="31">
         <activity
-            android:name=".MainActivity"
-            android:exported="true">
+            android:name=".ui.login.LoginActivity"
+            android:exported="true"
+            android:label="@string/title_activity_login">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
 
                 <category android:name="android.intent.category.LAUNCHER" />
             </intent-filter>
         </activity>
+        <activity
+            android:name=".MainActivity"
+            android:exported="true" />
     </application>
 
 </manifest>

app/src/main/java/cn/org/bjca/trust/android/imdemo/data/LoginDataSource.java

@@ -0,0 +1,29 @@
+package cn.org.bjca.trust.android.imdemo.data;
+
+import cn.org.bjca.trust.android.imdemo.data.model.LoggedInUser;
+
+import java.io.IOException;
+
+/**
+ * Class that handles authentication w/ login credentials and retrieves user information.
+ */
+public class LoginDataSource {
+
+    public Result<LoggedInUser> login(String username, String password) {
+
+        try {
+            // TODO: handle loggedInUser authentication
+            LoggedInUser fakeUser =
+                    new LoggedInUser(username,
+                            java.util.UUID.randomUUID().toString(),
+                            "123456");
+            return new Result.Success<>(fakeUser);
+        } catch (Exception e) {
+            return new Result.Error(new IOException("Error logging in", e));
+        }
+    }
+
+    public void logout() {
+        // TODO: revoke authentication
+    }
+}

app/src/main/java/cn/org/bjca/trust/android/imdemo/data/LoginRepository.java

@@ -0,0 +1,54 @@
+package cn.org.bjca.trust.android.imdemo.data;
+
+import cn.org.bjca.trust.android.imdemo.data.model.LoggedInUser;
+
+/**
+ * Class that requests authentication and user information from the remote data source and
+ * maintains an in-memory cache of login status and user credentials information.
+ */
+public class LoginRepository {
+
+    private static volatile LoginRepository instance;
+
+    private LoginDataSource dataSource;
+
+    // If user credentials will be cached in local storage, it is recommended it be encrypted
+    // @see https://developer.android.com/training/articles/keystore
+    private LoggedInUser user = null;
+
+    // private constructor : singleton access
+    private LoginRepository(LoginDataSource dataSource) {
+        this.dataSource = dataSource;
+    }
+
+    public static LoginRepository getInstance(LoginDataSource dataSource) {
+        if (instance == null) {
+            instance = new LoginRepository(dataSource);
+        }
+        return instance;
+    }
+
+    public boolean isLoggedIn() {
+        return user != null;
+    }
+
+    public void logout() {
+        user = null;
+        dataSource.logout();
+    }
+
+    private void setLoggedInUser(LoggedInUser user) {
+        this.user = user;
+        // If user credentials will be cached in local storage, it is recommended it be encrypted
+        // @see https://developer.android.com/training/articles/keystore
+    }
+
+    public Result<LoggedInUser> login(String username, String password) {
+        // handle login
+        Result<LoggedInUser> result = dataSource.login(username, password);
+        if (result instanceof Result.Success) {
+            setLoggedInUser(((Result.Success<LoggedInUser>) result).getData());
+        }
+        return result;
+    }
+}

app/src/main/java/cn/org/bjca/trust/android/imdemo/data/Result.java

@@ -0,0 +1,48 @@
+package cn.org.bjca.trust.android.imdemo.data;
+
+/**
+ * A generic class that holds a result success w/ data or an error exception.
+ */
+public class Result<T> {
+    // hide the private constructor to limit subclass types (Success, Error)
+    private Result() {
+    }
+
+    @Override
+    public String toString() {
+        if (this instanceof Result.Success) {
+            Result.Success success = (Result.Success) this;
+            return "Success[data=" + success.getData().toString() + "]";
+        } else if (this instanceof Result.Error) {
+            Result.Error error = (Result.Error) this;
+            return "Error[exception=" + error.getError().toString() + "]";
+        }
+        return "";
+    }
+
+    // Success sub-class
+    public final static class Success<T> extends Result {
+        private T data;
+
+        public Success(T data) {
+            this.data = data;
+        }
+
+        public T getData() {
+            return this.data;
+        }
+    }
+
+    // Error sub-class
+    public final static class Error extends Result {
+        private Exception error;
+
+        public Error(Exception error) {
+            this.error = error;
+        }
+
+        public Exception getError() {
+            return this.error;
+        }
+    }
+}

app/src/main/java/cn/org/bjca/trust/android/imdemo/data/model/LoggedInUser.java

@@ -0,0 +1,29 @@
+package cn.org.bjca.trust.android.imdemo.data.model;
+
+/**
+ * Data class that captures user information for logged in users retrieved from LoginRepository
+ */
+public class LoggedInUser {
+
+    private final String userId;
+    private final String displayName;
+    private final String userSig;
+
+    public LoggedInUser(String userId, String displayName, String userSig) {
+        this.userId = userId;
+        this.displayName = displayName;
+        this.userSig = userSig;
+    }
+
+    public String getUserId() {
+        return userId;
+    }
+
+    public String getDisplayName() {
+        return displayName;
+    }
+
+    public String getUserSig() {
+        return userSig;
+    }
+}

app/src/main/java/cn/org/bjca/trust/android/imdemo/ui/login/LoggedInUserView.java

@@ -0,0 +1,19 @@
+package cn.org.bjca.trust.android.imdemo.ui.login;
+
+import cn.org.bjca.trust.android.imdemo.data.model.LoggedInUser;
+
+/**
+ * Class exposing authenticated user details to the UI.
+ */
+class LoggedInUserView {
+    private LoggedInUser user;
+    //... other data fields that may be accessible to the UI
+
+    LoggedInUserView(LoggedInUser user) {
+        this.user = user;
+    }
+
+    LoggedInUser getDisplayName() {
+        return user;
+    }
+}

app/src/main/java/cn/org/bjca/trust/android/imdemo/ui/login/LoginActivity.java

@@ -0,0 +1,143 @@
+package cn.org.bjca.trust.android.imdemo.ui.login;
+
+import android.app.Activity;
+import android.content.Intent;
+import android.os.Bundle;
+import android.text.Editable;
+import android.text.TextWatcher;
+import android.view.KeyEvent;
+import android.view.View;
+import android.view.inputmethod.EditorInfo;
+import android.widget.Button;
+import android.widget.EditText;
+import android.widget.ProgressBar;
+import android.widget.TextView;
+import android.widget.Toast;
+
+import androidx.annotation.Nullable;
+import androidx.annotation.StringRes;
+import androidx.appcompat.app.AppCompatActivity;
+import androidx.lifecycle.Observer;
+import androidx.lifecycle.ViewModelProvider;
+
+import cn.org.bjca.trust.android.imdemo.MainActivity;
+import cn.org.bjca.trust.android.imdemo.databinding.ActivityLoginBinding;
+import cn.org.bjca.trust.android.lib.im.SzyxPush;
+import cn.org.bjca.trust.android.lib.im.kit.IMSDKCallback;
+
+public class LoginActivity extends AppCompatActivity {
+
+    private LoginViewModel loginViewModel;
+    private ActivityLoginBinding binding;
+
+    @Override
+    public void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+
+        binding = ActivityLoginBinding.inflate(getLayoutInflater());
+        setContentView(binding.getRoot());
+
+        loginViewModel = new ViewModelProvider(this, new LoginViewModelFactory())
+                .get(LoginViewModel.class);
+
+        final EditText usernameEditText = binding.username;
+        final EditText passwordEditText = binding.password;
+        final Button loginButton = binding.login;
+        final ProgressBar loadingProgressBar = binding.loading;
+
+        loginViewModel.getLoginFormState().observe(this, new Observer<LoginFormState>() {
+            @Override
+            public void onChanged(@Nullable LoginFormState loginFormState) {
+                if (loginFormState == null) {
+                    return;
+                }
+                loginButton.setEnabled(loginFormState.isDataValid());
+                if (loginFormState.getUsernameError() != null) {
+                    usernameEditText.setError(getString(loginFormState.getUsernameError()));
+                }
+                if (loginFormState.getPasswordError() != null) {
+                    passwordEditText.setError(getString(loginFormState.getPasswordError()));
+                }
+            }
+        });
+
+        loginViewModel.getLoginResult().observe(this, new Observer<LoginResult>() {
+            @Override
+            public void onChanged(@Nullable LoginResult loginResult) {
+                if (loginResult == null) {
+                    return;
+                }
+                loadingProgressBar.setVisibility(View.GONE);
+                if (loginResult.getError() != null) {
+                    showLoginFailed(loginResult.getError());
+                }
+                if (loginResult.getSuccess() != null) {
+                    updateUiWithUser(loginResult.getSuccess());
+                }
+            }
+        });
+
+        TextWatcher afterTextChangedListener = new TextWatcher() {
+            @Override
+            public void beforeTextChanged(CharSequence s, int start, int count, int after) {
+                // ignore
+            }
+
+            @Override
+            public void onTextChanged(CharSequence s, int start, int before, int count) {
+                // ignore
+            }
+
+            @Override
+            public void afterTextChanged(Editable s) {
+                loginViewModel.loginDataChanged(usernameEditText.getText().toString(),
+                        passwordEditText.getText().toString());
+            }
+        };
+        usernameEditText.addTextChangedListener(afterTextChangedListener);
+        passwordEditText.addTextChangedListener(afterTextChangedListener);
+        passwordEditText.setOnEditorActionListener(new TextView.OnEditorActionListener() {
+
+            @Override
+            public boolean onEditorAction(TextView v, int actionId, KeyEvent event) {
+                if (actionId == EditorInfo.IME_ACTION_DONE) {
+                    loginViewModel.login(usernameEditText.getText().toString(),
+                            passwordEditText.getText().toString());
+                }
+                return false;
+            }
+        });
+
+        loginButton.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                loadingProgressBar.setVisibility(View.VISIBLE);
+                loginViewModel.login(usernameEditText.getText().toString(),
+                        passwordEditText.getText().toString());
+            }
+        });
+    }
+
+    private void updateUiWithUser(LoggedInUserView model) {
+        SzyxPush.getInstance().login(model.getDisplayName().getUserId(), model.getDisplayName().getUserSig(), new IMSDKCallback() {
+            @Override
+            public void success() {
+
+                setResult(Activity.RESULT_OK);
+
+                startActivity(new Intent(LoginActivity.this, MainActivity.class));
+                //Complete and destroy login activity once successful
+                finish();
+            }
+
+            @Override
+            public void failed(int code, String error) {
+                Toast.makeText(getApplicationContext(), error, Toast.LENGTH_SHORT).show();
+            }
+        });
+    }
+
+    private void showLoginFailed(@StringRes Integer errorString) {
+        Toast.makeText(getApplicationContext(), errorString, Toast.LENGTH_SHORT).show();
+    }
+}

app/src/main/java/cn/org/bjca/trust/android/imdemo/ui/login/LoginFormState.java

@@ -0,0 +1,40 @@
+package cn.org.bjca.trust.android.imdemo.ui.login;
+
+import androidx.annotation.Nullable;
+
+/**
+ * Data validation state of the login form.
+ */
+class LoginFormState {
+    @Nullable
+    private Integer usernameError;
+    @Nullable
+    private Integer passwordError;
+    private boolean isDataValid;
+
+    LoginFormState(@Nullable Integer usernameError, @Nullable Integer passwordError) {
+        this.usernameError = usernameError;
+        this.passwordError = passwordError;
+        this.isDataValid = false;
+    }
+
+    LoginFormState(boolean isDataValid) {
+        this.usernameError = null;
+        this.passwordError = null;
+        this.isDataValid = isDataValid;
+    }
+
+    @Nullable
+    Integer getUsernameError() {
+        return usernameError;
+    }
+
+    @Nullable
+    Integer getPasswordError() {
+        return passwordError;
+    }
+
+    boolean isDataValid() {
+        return isDataValid;
+    }
+}

app/src/main/java/cn/org/bjca/trust/android/imdemo/ui/login/LoginResult.java

@@ -0,0 +1,31 @@
+package cn.org.bjca.trust.android.imdemo.ui.login;
+
+import androidx.annotation.Nullable;
+
+/**
+ * Authentication result : success (user details) or error message.
+ */
+class LoginResult {
+    @Nullable
+    private LoggedInUserView success;
+    @Nullable
+    private Integer error;
+
+    LoginResult(@Nullable Integer error) {
+        this.error = error;
+    }
+
+    LoginResult(@Nullable LoggedInUserView success) {
+        this.success = success;
+    }
+
+    @Nullable
+    LoggedInUserView getSuccess() {
+        return success;
+    }
+
+    @Nullable
+    Integer getError() {
+        return error;
+    }
+}

app/src/main/java/cn/org/bjca/trust/android/imdemo/ui/login/LoginViewModel.java

@@ -0,0 +1,70 @@
+package cn.org.bjca.trust.android.imdemo.ui.login;
+
+import androidx.lifecycle.LiveData;
+import androidx.lifecycle.MutableLiveData;
+import androidx.lifecycle.ViewModel;
+
+import android.util.Patterns;
+
+import cn.org.bjca.trust.android.imdemo.data.LoginRepository;
+import cn.org.bjca.trust.android.imdemo.data.Result;
+import cn.org.bjca.trust.android.imdemo.data.model.LoggedInUser;
+import cn.org.bjca.trust.android.imdemo.R;
+
+public class LoginViewModel extends ViewModel {
+
+    private MutableLiveData<LoginFormState> loginFormState = new MutableLiveData<>();
+    private MutableLiveData<LoginResult> loginResult = new MutableLiveData<>();
+    private LoginRepository loginRepository;
+
+    LoginViewModel(LoginRepository loginRepository) {
+        this.loginRepository = loginRepository;
+    }
+
+    LiveData<LoginFormState> getLoginFormState() {
+        return loginFormState;
+    }
+
+    LiveData<LoginResult> getLoginResult() {
+        return loginResult;
+    }
+
+    public void login(String username, String password) {
+        // can be launched in a separate asynchronous job
+        Result<LoggedInUser> result = loginRepository.login(username, password);
+
+        if (result instanceof Result.Success) {
+            LoggedInUser data = ((Result.Success<LoggedInUser>) result).getData();
+            loginResult.setValue(new LoginResult(new LoggedInUserView(data)));
+        } else {
+            loginResult.setValue(new LoginResult(R.string.login_failed));
+        }
+    }
+
+    public void loginDataChanged(String username, String password) {
+        if (!isUserNameValid(username)) {
+            loginFormState.setValue(new LoginFormState(R.string.invalid_username, null));
+        } else if (!isPasswordValid(password)) {
+            loginFormState.setValue(new LoginFormState(null, R.string.invalid_password));
+        } else {
+            loginFormState.setValue(new LoginFormState(true));
+        }
+    }
+
+    // A placeholder username validation check
+    private boolean isUserNameValid(String username) {
+        if (username == null) {
+            return false;
+        }
+        if (username.contains("@")) {
+            return Patterns.EMAIL_ADDRESS.matcher(username).matches();
+        } else {
+            return !username.trim().isEmpty();
+        }
+    }
+
+    // A placeholder password validation check
+    private boolean isPasswordValid(String password) {
+        return password != null && password.trim().length() > 5;
+    }
+}

app/src/main/java/cn/org/bjca/trust/android/imdemo/ui/login/LoginViewModelFactory.java

@@ -0,0 +1,26 @@
+package cn.org.bjca.trust.android.imdemo.ui.login;
+
+import androidx.lifecycle.ViewModel;
+import androidx.lifecycle.ViewModelProvider;
+import androidx.annotation.NonNull;
+
+import cn.org.bjca.trust.android.imdemo.data.LoginDataSource;
+import cn.org.bjca.trust.android.imdemo.data.LoginRepository;
+
+/**
+ * ViewModel provider factory to instantiate LoginViewModel.
+ * Required given LoginViewModel has a non-empty constructor
+ */
+public class LoginViewModelFactory implements ViewModelProvider.Factory {
+
+    @NonNull
+    @Override
+    @SuppressWarnings("unchecked")
+    public <T extends ViewModel> T create(@NonNull Class<T> modelClass) {
+        if (modelClass.isAssignableFrom(LoginViewModel.class)) {
+            return (T) new LoginViewModel(LoginRepository.getInstance(new LoginDataSource()));
+        } else {
+            throw new IllegalArgumentException("Unknown ViewModel class");
+        }
+    }
+}

app/src/main/res/layout-w1240dp/activity_login.xml

@@ -0,0 +1,71 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:id="@+id/container"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:paddingLeft="@dimen/activity_horizontal_margin"
+    android:paddingTop="@dimen/activity_vertical_margin"
+    android:paddingRight="@dimen/activity_horizontal_margin"
+    android:paddingBottom="@dimen/activity_vertical_margin"
+    tools:context=".ui.login.LoginActivity">
+
+    <EditText
+        android:id="@+id/username"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="96dp"
+        android:autofillHints="@string/prompt_email"
+        android:hint="@string/prompt_email"
+        android:inputType="textEmailAddress"
+        android:selectAllOnFocus="true"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent" />
+
+    <EditText
+        android:id="@+id/password"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="8dp"
+        android:autofillHints="@string/prompt_password"
+        android:hint="@string/prompt_password"
+        android:imeActionLabel="@string/action_sign_in_short"
+        android:imeOptions="actionDone"
+        android:inputType="textPassword"
+        android:selectAllOnFocus="true"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toBottomOf="@+id/username" />
+
+    <Button
+        android:id="@+id/login"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_gravity="start"
+        android:layout_marginTop="16dp"
+        android:layout_marginBottom="64dp"
+        android:enabled="false"
+        android:text="@string/action_sign_in"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toBottomOf="@+id/password"
+        app:layout_constraintVertical_bias="0.2" />
+
+    <ProgressBar
+        android:id="@+id/loading"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_gravity="center"
+        android:layout_marginTop="64dp"
+        android:layout_marginBottom="64dp"
+        android:visibility="gone"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="@+id/password"
+        app:layout_constraintStart_toStartOf="@+id/password"
+        app:layout_constraintTop_toTopOf="parent"
+        app:layout_constraintVertical_bias="0.3" />
+
+</androidx.constraintlayout.widget.ConstraintLayout>

app/src/main/res/layout-w936dp/activity_login.xml

@@ -0,0 +1,78 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:id="@+id/container"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:paddingLeft="@dimen/activity_horizontal_margin"
+    android:paddingTop="@dimen/activity_vertical_margin"
+    android:paddingRight="@dimen/activity_horizontal_margin"
+    android:paddingBottom="@dimen/activity_vertical_margin"
+    tools:context=".ui.login.LoginActivity">
+
+    <androidx.constraintlayout.widget.ConstraintLayout
+        android:layout_width="840dp"
+        android:layout_height="match_parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent">
+
+        <EditText
+            android:id="@+id/username"
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="96dp"
+            android:autofillHints="@string/prompt_email"
+            android:hint="@string/prompt_email"
+            android:inputType="textEmailAddress"
+            android:selectAllOnFocus="true"
+            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toTopOf="parent" />
+
+        <EditText
+            android:id="@+id/password"
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="8dp"
+            android:autofillHints="@string/prompt_password"
+            android:hint="@string/prompt_password"
+            android:imeActionLabel="@string/action_sign_in_short"
+            android:imeOptions="actionDone"
+            android:inputType="textPassword"
+            android:selectAllOnFocus="true"
+            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toBottomOf="@+id/username" />
+
+        <Button
+            android:id="@+id/login"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_gravity="start"
+            android:layout_marginTop="16dp"
+            android:layout_marginBottom="64dp"
+            android:enabled="false"
+            android:text="@string/action_sign_in"
+            app:layout_constraintBottom_toBottomOf="parent"
+            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toBottomOf="@+id/password"
+            app:layout_constraintVertical_bias="0.2" />
+
+        <ProgressBar
+            android:id="@+id/loading"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_gravity="center"
+            android:layout_marginTop="64dp"
+            android:layout_marginBottom="64dp"
+            android:visibility="gone"
+            app:layout_constraintBottom_toBottomOf="parent"
+            app:layout_constraintEnd_toEndOf="@+id/password"
+            app:layout_constraintStart_toStartOf="@+id/password"
+            app:layout_constraintTop_toTopOf="parent"
+            app:layout_constraintVertical_bias="0.3" />
+
+    </androidx.constraintlayout.widget.ConstraintLayout>
+</androidx.constraintlayout.widget.ConstraintLayout>

app/src/main/res/layout/activity_login.xml

@@ -0,0 +1,73 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:id="@+id/container"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:paddingLeft="@dimen/activity_horizontal_margin"
+    android:paddingTop="@dimen/activity_vertical_margin"
+    android:paddingRight="@dimen/activity_horizontal_margin"
+    android:paddingBottom="@dimen/activity_vertical_margin"
+    tools:context=".ui.login.LoginActivity">
+
+    <EditText
+        android:id="@+id/username"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="96dp"
+        android:autofillHints="@string/prompt_email"
+        android:hint="@string/prompt_email"
+        android:inputType="phone"
+        android:text="13800000000"
+        android:selectAllOnFocus="true"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent" />
+
+    <EditText
+        android:id="@+id/password"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="8dp"
+        android:autofillHints="@string/prompt_password"
+        android:hint="@string/prompt_password"
+        android:imeActionLabel="@string/action_sign_in_short"
+        android:text="123456"
+        android:imeOptions="actionDone"
+        android:inputType="textPassword"
+        android:selectAllOnFocus="true"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toBottomOf="@+id/username" />
+
+    <Button
+        android:id="@+id/login"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_gravity="start"
+        android:layout_marginTop="16dp"
+        android:layout_marginBottom="64dp"
+        android:enabled="false"
+        android:text="@string/action_sign_in"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toBottomOf="@+id/password"
+        app:layout_constraintVertical_bias="0.2" />
+
+    <ProgressBar
+        android:id="@+id/loading"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_gravity="center"
+        android:layout_marginTop="64dp"
+        android:layout_marginBottom="64dp"
+        android:visibility="gone"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="@+id/password"
+        app:layout_constraintStart_toStartOf="@+id/password"
+        app:layout_constraintTop_toTopOf="parent"
+        app:layout_constraintVertical_bias="0.3" />
+
+</androidx.constraintlayout.widget.ConstraintLayout>

app/src/main/res/values-land/dimens.xml

@@ -0,0 +1,3 @@
+<resources>
+    <dimen name="activity_horizontal_margin">48dp</dimen>
+</resources>

app/src/main/res/values-w1240dp/dimens.xml

@@ -0,0 +1,3 @@
+<resources>
+    <dimen name="activity_horizontal_margin">200dp</dimen>
+</resources>

app/src/main/res/values-w600dp/dimens.xml

@@ -0,0 +1,3 @@
+<resources>
+    <dimen name="activity_horizontal_margin">48dp</dimen>
+</resources>

app/src/main/res/values/dimens.xml

@@ -0,0 +1,5 @@
+<resources>
+    <!-- Default screen margins, per the Android Design guidelines. -->
+    <dimen name="activity_horizontal_margin">16dp</dimen>
+    <dimen name="activity_vertical_margin">16dp</dimen>
+</resources>

app/src/main/res/values/strings.xml

@@ -1,3 +1,12 @@
 <resources>
     <string name="app_name">ImAndroid</string>
+    <string name="title_activity_login">LoginActivity</string>
+    <string name="prompt_email">Phone</string>
+    <string name="prompt_password">Password</string>
+    <string name="action_sign_in">Sign in or register</string>
+    <string name="action_sign_in_short">Sign in</string>
+    <string name="welcome">"Welcome !"</string>
+    <string name="invalid_username">Not a valid username</string>
+    <string name="invalid_password">Password must be >5 characters</string>
+    <string name="login_failed">"Login failed"</string>
 </resources>

settings.gradle

@@ -5,7 +5,7 @@ pluginManagement {
             allowInsecureProtocol true
         }
         maven {
-            url 'http://nexus.51trust.net/repository/maven-public/'
+            url 'http://nexus.51trust.net/repository/gradle-plugin/'
             allowInsecureProtocol true
         }
     }
@@ -18,7 +18,7 @@ dependencyResolutionManagement {
             allowInsecureProtocol true
         }
         maven {
-            url 'http://nexus.51trust.net/repository/maven-public/'
+            url 'http://nexus.51trust.net/repository/gradle-plugin/'
             allowInsecureProtocol true
         }
     }