问题:

I want to be able to tap on a notification when the device is locked and launch an activity without unlocking the device.

I added some flags to the activity in the onCreate() method that allow the activity to be displayed when the device is locked:

Window window = this.getWindow(); window.addFlags(WindowManager.LayoutParams.FLAG_DISMISS_KEYGUARD); window.addFlags(WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED); window.addFlags(WindowManager.LayoutParams.FLAG_TURN_SCREEN_ON); window.addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);

This is the code that creates the notification:

Intent intent = new Intent(this, MainActivity.class); PendingIntent pendingIntent = PendingIntent.getActivity(         this,         0,         intent,         PendingIntent.FLAG_UPDATE_CURRENT);  Notification notification = new Notification.Builder(this)         .setContentIntent(pendingIntent)         .setContentTitle("Title")         .setSmallIcon(android.R.drawable.ic_menu_more)         .build();  NotificationManager notificationManager =         (NotificationManager) getSystemService(NOTIFICATION_SERVICE);  notificationManager.notify(1, notification);

I also added showOnLockScreen="true" to the manifest:

<activity     android:name=".MainActivity"     android:label="@string/app_name"     android:showOnLockScreen="true"     android:theme="@style/AppTheme.NoActionBar">     <intent-filter>         <action android:name="android.intent.action.MAIN" />          <category android:name="android.intent.category.LAUNCHER" />     </intent-filter> </activity>

Things that are working:

The activity is shown when the device is locked (for example, if I leave the activity on foreground and lock the phone the activity remains on foreground without the need of unlocking the phone)
If I tap the notification when the phone is locked, it asks me to unlock it and then the activity is shown

I want to be able to do the same but without unlocking the device.
What am I missing?

回答1:

Try this!!!

private NotificationCompat.Builder mBuilder;  Intent notifyIntent = new Intent(getApplicationContext(), MainActivity.class);     notifyIntent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP | Intent.FLAG_ACTIVITY_SINGLE_TOP | Intent.FLAG_ACTIVITY_CLEAR_TASK | Intent.FLAG_ACTIVITY_NEW_TASK);     PendingIntent pendingIntent = PendingIntent.getActivity(getApplicationContext(), 0, notifyIntent, 0);     mBuilder = new NotificationCompat.Builder(this)             .setSmallIcon(getNotificationIcon())             .setContent(remoteViews)             .setContentIntent(pendingIntent)             .setOnlyAlertOnce(true)             .setOngoing(true);

this is method get notification icon on device 5.0 and lower

private int getNotificationIcon() {     boolean useWhiteIcon = (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.LOLLIPOP);     return useWhiteIcon ? R.drawable.notification_icon : R.mipmap.ic_launcher; }

Remove code below in onCreate

Window window = this.getWindow(); window.addFlags(WindowManager.LayoutParams.FLAG_DISMISS_KEYGUARD); window.addFlags(WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED); window.addFlags(WindowManager.LayoutParams.FLAG_TURN_SCREEN_ON); window.addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);

转载请标明出处:Launch activity when user taps on a notification from the lockscreen

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