主动回到Home，后台运行

public static void goHome(Context context) {

     Intent mHomeIntent = new Intent(Intent.ACTION_MAIN);

     mHomeIntent.addCategory(Intent.CATEGORY_HOME);

     mHomeIntent.addFlags(Intent.FLAG\_ACTIVITY\_NEW_TASK | Intent.FLAG\_ACTIVITY\_RESET\_TASK\_IF_NEEDED);

     context.startActivity(mHomeIntent);

   }