android - 解锁 android 设备在调用 ACTION_CALL Intent 时不工作

Question

我收到推送通知，正在调用前台服务。

从服务中，我正在调用一个 Activity。

在这里，我有 2 个功能。

<强>1。紧急声音报警

<强>2。使用 ACTION_CALL 调用。

如果设备已解锁，两者都可以正常工作。

但是，如果设备被密码或模式锁定，则在收到推送时它不会工作。

下面是解锁设备的代码。此方法从 onStart 调用。

private void unlockDevice() {

    KeyguardManager loKeyguardManager = (KeyguardManager) getSystemService(Context.KEYGUARD_SERVICE);
    Window loWindow = this.getWindow();

    if (Common.isAboveAPI27()) {
        setShowWhenLocked(true);
        setTurnScreenOn(true);
    } else if (Common.isAboveAPI26()) {
        loWindow.addFlags(WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED);
        loWindow.addFlags(WindowManager.LayoutParams.FLAG_TURN_SCREEN_ON);
        dismissKeyguard(loKeyguardManager);
    } else {
        if (loKeyguardManager != null) {
            KeyguardManager.KeyguardLock loKeyguardLock = loKeyguardManager.newKeyguardLock("FullWakeUps");
            loKeyguardLock.disableKeyguard();
        }
        loWindow.addFlags(WindowManager.LayoutParams.FLAG_DISMISS_KEYGUARD); // Deprecated in 26
        loWindow.addFlags(WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED); // Deprecated in 27
        loWindow.addFlags(WindowManager.LayoutParams.FLAG_TURN_SCREEN_ON); // Deprecated in 27
    }

    //Keep screen on
    loWindow.addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
}

@RequiresApi(api = Build.VERSION_CODES.O)
private void dismissKeyguard(KeyguardManager loKeyguardManager) {
    if (loKeyguardManager != null) {
        loKeyguardManager.requestDismissKeyguard(SOSCallAndAlarmActivity.this, new KeyguardManager.KeyguardDismissCallback() {
            @Override
            public void onDismissError() {
                super.onDismissError();
                Log.i(TAG, Build.VERSION.SDK_INT + " : onDismissError");
            }

            @Override
            public void onDismissSucceeded() {
                super.onDismissSucceeded();
                Log.i(TAG, Build.VERSION.SDK_INT + " : onDismissSucceeded");
            }

            @Override
            public void onDismissCancelled() {
                super.onDismissCancelled();
                Log.i(TAG, Build.VERSION.SDK_INT + " : onDismissCancelled");
            }
        });
    }
}

下面的方法是在 onDestroy 中调用来重新启用锁:

private void reEnabledKeyguard() {
    KeyguardManager loKeyguardManager = (KeyguardManager) getSystemService(Context.KEYGUARD_SERVICE);
    if (loKeyguardManager != null) {
        KeyguardManager.KeyguardLock loKeyguardLock = loKeyguardManager.newKeyguardLock("FullWakeUps");
        loKeyguardLock.reenableKeyguard();
    }
    Window loWindow = this.getWindow();
    loWindow.addFlags(WindowManager.LayoutParams.FLAG_ALLOW_LOCK_WHILE_SCREEN_ON);
}

发起调用的代码。

public void callOnNumbers(String fsPhoneNumber) {
    Intent loCallIntent = new Intent(Intent.ACTION_CALL);
    loCallIntent.setData(Uri.parse("tel:" + fsPhoneNumber));
    //callIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK); // tried this but not helped.
    if (ActivityCompat.checkSelfPermission(CallAndAlarmActivity.this,
            android.Manifest.permission.CALL_PHONE) != PackageManager.PERMISSION_GRANTED) {
        Log.i(TAG, "call phone permission not granted");
        return;
    }
    startActivity(loCallIntent);
}

奇怪的是，当此方法打开调用屏幕闪烁并再次在锁定屏幕上显示密码屏幕时，只需按返回按钮我就可以看到调用屏幕。

我还需要知道一件事，即使我设置了所有应用程序终止选项并禁用了电池优化。相同的代码没有在推送接收时执行。

当设备半小时不活动时，如果收到推送，上面的代码甚至没有打开灯。当我点击锁定/解锁按钮时，我可以正确地看到我的屏幕。即使我在推送接收时间 30 秒后按下它。

android N面临的问题

额外的当 ACTION_CALL Intent 调用它来执行我的 Activity onPause 并且我没有在 onPause 中添加任何代码时，我可以在 logcate 中看到一个错误/p>

2020-04-27 16:23:47.400 25826-25826/app.safety E/ActivityThread: Performing stop of activity that is already stopped: {app.safety/app.safety.CallAndAlarmActivity}
java.lang.RuntimeException: Performing stop of activity that is already stopped: {app.safety/app.safety.CallAndAlarmActivity}
    at android.app.ActivityThread.performStopActivityInner(ActivityThread.java:4089)
    at android.app.ActivityThread.handleStopActivity(ActivityThread.java:4177)
    at android.app.ActivityThread.-wrap24(Unknown Source:0)
    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1648)
    at android.os.Handler.dispatchMessage(Handler.java:106)
    at android.os.Looper.loop(Looper.java:164)
    at android.app.ActivityThread.main(ActivityThread.java:6687)
    at java.lang.reflect.Method.invoke(Native Method)
    at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:438)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:810)
2020-04-27 16:23:47.400 25826-25826/app.safety E/ActivityThread: ActivityClientRecord{paused=true, stopped=true, hideForNow=false, startsNotResumed=false, isForward=false, pendingConfigChanges=0, onlyLocalRequest=false, preserveWindow=false, Activity{resumed=false, stopped=true, finished=false, destroyed=false, startedActivity=false, temporaryPause=false, changingConfigurations=false}}

谢谢

Answer 1

我想知道它是否与 Android 中的Background Execution Limit. 有关。我建议您查看这篇文章。

https://medium.com/exploring-android/exploring-background-execution-limits-on-android-oreo-ab384762a66c

希望对您有所帮助。