<application
 android:allowBackup="true"
 android:icon="@mipmap/ic_launcher"
 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-alias
 android:name=".newsLuncherActivity"
 android:enabled="false"
 android:icon="@mipmap/app_logo"
 android:label="@string/app_name"
 android:targetActivity=".MainActivity">
 <intent-filter>
 <action android:name="android.intent.action.MAIN" />
 <category android:name="android.intent.category.LAUNCHER" />
 </intent-filter>
 </activity-alias>

</application>

android:icon="@mipmap/app_logo"
android:label="@string/app_name"

android:name=".newsLuncherActivity"

android:enabled="false"

android:targetActivity=".MainActivity"

com.ming.abner.changelauncher.newsLuncherActivity

private void changeLuncher(String name) {
    PackageManager pm = getPackageManager();
    pm.setComponentEnabledSetting(getComponentName(),
        PackageManager.COMPONENT_ENABLED_STATE_DISABLED, PackageManager.DONT_KILL_APP);
    pm.setComponentEnabledSetting(new ComponentName(MainActivity.this, name),
        PackageManager.COMPONENT_ENABLED_STATE_ENABLED, PackageManager.DONT_KILL_APP);
    //Intent 重启 Launcher 应用
    Intent intent = new Intent(Intent.ACTION_MAIN);
    intent.addCategory(Intent.CATEGORY_HOME);
    intent.addCategory(Intent.CATEGORY_DEFAULT);
    List<ResolveInfo> resolves = pm.queryIntentActivities(intent, 0);
    for (ResolveInfo res : resolves) {
      if (res.activityInfo != null) {
        ActivityManager am = (ActivityManager) getSystemService(ACTIVITY_SERVICE);
        am.killBackgroundProcesses(res.activityInfo.packageName);
      }
    }
  }