1. 下載sdk，前面介紹使用無UI的API中有下載的地址，
2. 解壓，開啟解壓好的檔案 ，選擇examples，開啟 ，刪掉裡面的simpledemo檔案 ，這是裡面自帶的一些案例沒什麼用，不需要
3. 如果用android Studio導的話就先建個lib，裡面的包名需要和下面一條中的包名一樣
4. 開啟裡面的easeui資料夾，裡面有src，裡面的java類，需要我們建立一樣的包，com.example.emtest，把裡面的檔案都拷貝到我們的同一個包下，然後報res檔案，拷貝到我們的res目錄下，裡面的lib檔案拷貝到我們的lib裡
5. 然後我們需要匯入依賴包，前面介紹使用無UI的API中有介紹，不需要配置的就是manifest
6. 然後將這個lib依賴到需要用的工程中就可以了

下面是一個案例

MyApp 類初始化

public class MyApp extends Application {
    @Override
    public void onCreate() {
        super.onCreate();
        EMOptions options = new EMOptions();
        EaseUI.getInstance().init(this,options);
    }
}

MainActivity 登入註冊

public
 
 class MainActivity extends AppCompatActivity {

    EditText et_username, et_password;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        et_username = (EditText) findViewById(R.id.et_username);
        et_password = (EditText) findViewById(R.id.et_password);
    }



    public
 
 void login(View v) {
        final String username = et_username.getText().toString();
        final String password = et_password.getText().toString();
        EMClient.getInstance().login(username, password, new EMCallBack() {
            @Override
            public void onSuccess() {
                startActivity(new Intent(getBaseContext(), ContactActivity.class).putExtra("username", username));
                EMClient.getInstance().chatManager().loadAllConversations();//會話
                EMClient.getInstance().groupManager().loadAllGroups();//群組
            }

            @Override
            public void onError(int i, String s) {

            }

            @Override
            public void onProgress(int i, String s) {

            }
        });
    }


    public void register(View v) {
        final String username = et_username.getText().toString();
        final String password = et_password.getText().toString();
        new Thread() {
            @Override
            public void run() {
                try {
                    EMClient.getInstance().createAccount(username, password);
                } catch (HyphenateException e) {
                    e.printStackTrace();
                }
            }
        }.start();
    }
}

ContactActivity 簡單的一些聊天

public class ContactActivity  extends AppCompatActivity implements EaseContactListFragment.EaseContactListItemClickListener {

    @Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        getWindow().requestFeature(Window.FEATURE_NO_TITLE);
        //getActionBar().hide();與上一句一樣 去掉bar
        String username = getIntent().getStringExtra("username");
        setTitle(username);
        setContentView(R.layout.activity_contact);
        initFragment();
    }
    List<String> usernames = new ArrayList<>();
    private void initFragment() {

       //沒有好友列表 第一需要拿到好友列表

        new Thread(){
            @Override
            public void run() {
                super.run();
                try {
                    //拿到好友列表
                    List<String> list= EMClient.getInstance().contactManager().getAllContactsFromServer();
                    if (list!=null)
                        usernames.addAll(list);
                    handler.sendEmptyMessage(1);
                } catch (HyphenateException e) {
                    e.printStackTrace();
                }
                Log.e("TAG", usernames.toString());
            }
        }.start();

    }

    Handler handler = new Handler(){
        @Override
        public void handleMessage(Message msg) {
            super.handleMessage(msg);
            switch (msg.what){
                case 1:
                    //EaseContactListFragment – 聯絡人頁面
                    EaseContactListFragment fragment = new EaseContactListFragment();
            //        Bundle bundle= new Bundle();
            //        fragment.setArguments(bundle);

                    //需要設定聯絡人列表才能啟動fragment
                    Map<String, EaseUser> map = new HashMap<>();
                    //EaseUser中有username的排序,只有一個user  如果全部是組，會被替換掉


                    for (int i = 0; i <usernames.size() ; i++) {
                        EaseUser user = new EaseUser(usernames.get(i));
                        //user可以做許多事，設定頭像，暱稱等

                        user.setNickname("張三");
                        user.setAvatar("https://ss0.bdstatic.com/5aV1bjqh_Q23odCf/static/superman/img/logo/bd_logo1_31bdc765.png");
                        //這樣設定還是不行的 需要到環信的內部程式碼中去改，環信只能儲存username和password
                        //怎麼設 ？EaseContactListFragment直接點進去
                        map.put(i + "", user);//誰便給一個key
                    }
                    fragment.setContactsMap(map);//設定聯絡人
                    //設定item點選事件
                    fragment.setContactListItemClickListener(ContactActivity.this);//


                    //最後替換它，用 FragmentTransaction
                    FragmentTransaction ft = getSupportFragmentManager().beginTransaction();
                    ft.replace(R.id.fl_content,fragment);
                    ft.commit();
                    break;
            }
        }
    };


    @Override
    public void onListItemClicked(EaseUser user) {
        //得到點選的是哪一個
        //EaseChatFragment – 聊天頁面，最主要的 fragment
        EaseChatFragment fragment = new EaseChatFragment();
        Bundle bundle = new Bundle();
        bundle.putInt(EaseConstant.EXTRA_CHAT_TYPE,EaseConstant.CHATTYPE_SINGLE);//聊天型別
        bundle.putString(EaseConstant.EXTRA_USER_ID,user.getUsername());//和誰聊天
        fragment.setArguments(bundle);

        FragmentTransaction ft = getSupportFragmentManager().beginTransaction();
        ft.replace(R.id.fl_content,fragment);
        ft.commit();
    }

    @Override//檔案返回鍵的時候讓他退回來
    public void onBackPressed() {
        super.onBackPressed();
        initFragment();//上面的如果用add會出現多個
    }
}

這裡需要設定manifest，和環信自己的activity和許可權

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.example.emtest">

    <!-- Required -->
    <uses-permission android:name="android.permission.VIBRATE" />
    <uses-permission android:name="android.permission.INTERNET" />
    <uses-permission android:name="android.permission.RECORD_AUDIO" />
    <uses-permission android:name="android.permission.CAMERA" />
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
    <uses-permission android:name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS"/>
    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
    <uses-permission android:name="android.permission.GET_TASKS" />
    <uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
    <uses-permission android:name="android.permission.CHANGE_WIFI_STATE" />
    <uses-permission android:name="android.permission.WAKE_LOCK" />
    <uses-permission android:name="android.permission.MODIFY_AUDIO_SETTINGS" />
    <uses-permission android:name="android.permission.READ_PHONE_STATE" />
    <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />

    <application android:allowBackup="true" android:icon="@mipmap/ic_launcher"
        android:name=".MyApp"
        android:label="@string/app_name" android:supportsRtl="true" android:theme="@style/AppTheme">
        <activity android:name=".MainActivity">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>

        <activity android:name=".ContactActivity"/>

        <!-- 環信自己的activity     -->
        <activity android:name="com.hyphenate.easeui.ui.EaseBaiduMapActivity" />
        <activity android:name="com.hyphenate.easeui.ui.EaseShowBigImageActivity" />
        <activity android:name="com.hyphenate.easeui.ui.EaseShowNormalFileActivity" />
        <activity android:name="com.hyphenate.easeui.ui.EaseShowVideoActivity" />

        <!-- 設定環信應用的AppKey -->
        <meta-data android:name="EASEMOB_APPKEY"  android:value="huary#demo" />
        <!-- 宣告SDK所需的service SDK核心功能-->
        <service android:name="com.hyphenate.chat.EMChatService" android:exported="true"/>
        <service android:name="com.hyphenate.chat.EMJobService"
            android:permission="android.permission.BIND_JOB_SERVICE"
            android:exported="true"
            />
        <!-- 宣告SDK所需的receiver -->
        <receiver android:name="com.hyphenate.chat.EMMonitorReceiver">
            <intent-filter>
                <action android:name="android.intent.action.PACKAGE_REMOVED"/>
                <data android:scheme="package"/>
            </intent-filter>
            <!-- 可選filter -->
            <intent-filter>
                <action android:name="android.intent.action.BOOT_COMPLETED"/>
                <action android:name="android.intent.action.USER_PRESENT" />
            </intent-filter>
        </receiver>
    </application>

</manifest>

環信只能儲存username和password如果需要改使用者的暱稱和影象需要到環信裡面去改

下面是一些技巧
1.改改使用者的暱稱和影象，EaseContactListFragment直接點進去

2.通過ListView去找adapter

3.找到adapter

4.通過adapter找到條目

5.在getview中找到設定的地方

6.找到這兩個id和設定的地方

7.進行修改