android - Activity noHistory ="true"在屏幕锁定时不起作用

Question

我已经为 list 上的 Activity 设置了 noHistory="true"。预期结果是当用户离开 Activity 并且它在屏幕上不再可见时，Activity 将完成。

当我按主页按钮导航到不同的应用程序并按预期返回 Activity 重新创建时，这工作正常。但是当 Activity 可见时，如果屏幕锁定，然后解锁，恢复 Activity 。我希望 Activity 重新创建或只是不显示，让用户再次启动应用程序。

  <application
    android:allowBackup="true"
    android:icon="@mipmap/ic_launcher"
    android:label="@string/app_name"
    android:supportsRtl="true"
    android:theme="@style/AppTheme" >
    <activity
        android:name=".TestActivity"
        android:label="@string/app_name"
        android:screenOrientation="portrait"
        android:noHistory="true">
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />
            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
</application>

Answer 1

I want the Activity to recreate or just not show up, let the user launch the app again.

我相信您可以处理如果屏幕被锁定，然后执行您的操作，例如终止应用程序。好像当用户锁定屏幕时， Activity 进入 onPause(); 方法。

这是日志:

02-18 20:27:23.621 22250-22250/com.client.stackoveflow E/LifeCycleEvents: In the onCreate() event
02-18 20:27:23.621 22250-22250/com.client.stackoveflow E/LifeCycleEvents: In the onStart() event
02-18 20:27:23.626 22250-22250/com.client.stackoveflow E/LifeCycleEvents: In the onResume() event
02-18 20:27:27.156 22250-22250/com.client.stackoveflow E/LifeCycleEvents: In the onPause() event
02-18 20:27:27.161 22250-22250/com.client.stackoveflow E/LifeCycleEvents: In the onStop() event
02-18 20:27:36.866 22250-22250/com.client.stackoveflow E/LifeCycleEvents: In the onRestart() event
02-18 20:27:36.866 22250-22250/com.client.stackoveflow E/LifeCycleEvents: In the onStart() event
02-18 20:27:36.881 22250-22250/com.client.stackoveflow E/LifeCycleEvents: In the onResume() event

所以，当用户像这样在 onPause(); 方法中锁定屏幕时，终止应用程序/或做你的事情:

public void onPause() {
        super.onPause();

        Log.e(tag, "In the onPause() event");
        // If the screen is off then the device has been locked
        PowerManager powerManager = (PowerManager) getSystemService(POWER_SERVICE);
        boolean isScreenOn = powerManager.isScreenOn(); // deprecated, but you can use isInteractive too

        if (!isScreenOn) {

            finish();  // or do your stuffs
        }

    }

然后，如果用户锁屏，App就结束了，需要重新打开。