如何在另一个应用程序中执行后退按钮动作？

Question

我想要简单的应用程序从当前可见活动中取消堆栈中的活动...如何实现应用程序在后台运行并在正在运行的应用程序中关闭活动？

Answer 1

Assuming these are your own activities, you need to declare an action on the activity you want to be closeable, then call that action from the other app. The closing activity will get notified in onNewIntent() where you can check the action and call finish

In closable activity:

   @Override
   protected void onNewIntent(Intent intent) {
       super.onNewIntent(intent);
       if ("action.action.myactionstring".equals(intent.getAction())) {
           finish();
       }
   }

In closeable activity mainfest

   <activity android:name=".CloseableActivity" >
        <intent-filter>
            <action android:name="action.action.myactionstring" />
            ...
        </intent-filter>
   </activity>

In the other activity

    Intent intent = new Intent("action string");
    intent.addFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP);
    startActivity(intent);

Answer 2

Did you try finish(); Command? More Info