Currently, I am working with an app in which there is a functionality in which user clicks on a button and user is navigated directly to settings screen. Now, whenever user is on settings screen at that time I want to disable the interaction of user with notification bar. I have a service & receiver in my code and tried to set the disable notification code in service class but can't able to achieve this.
View decorView = context.getSystemService(Context.WINDOW_SERVICE).getDecorView();
int uiOptions = View.SYSTEM_UI_FLAG_FULLSCREEN;
decorView.setSystemUiVisibility(uiOptions);
I tried to use this but not able to succeed. Any help will be appreciable.
Related
I am opening my app from background when it receives a notification. For this I am using a service. Whenever my app is in background and a new notification comes, app will open automatically. It is working fine.
But when app is in background and phone screen is locked, now when a notification will come, it will show on screen(locked screen) and when user will open phone lock, my app's screen will be visible but screen will not responding, screen colour will also be like greyish layout on it.
To open app I am using a service, code is:
Intent serviceIntent = new Intent(getApplicationContext(), NewTaskService.class);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
startForegroundService(serviceIntent);
} else {
startService(serviceIntent);
}
In NewTaskService Class I am opening my app.
The resulted screen image when app is opened with notification from on lock screen is attached.
It seems like app is doing much work on main thread. Why don't you try to push your code in multi-thread or use Asynchronized class that handles everything in background
Basically, it was due to a dialog box. When app is opened and user unlocks mobile screen, dialog box disappears but screen is visible like there is a dialog box. Screen was not freezing or stucking, also the screen was greyish type due to that dialog box.
Because in such scenario dialog box view disappears.
I recently downloaded the ACDisplay lock screen app:
https://play.google.com/store/apps/details?id=com.achep.acdisplay
The application shows an overlay on my device while also at the same time detecting home button click on the activity so that i can't bypass the lock screen. It is also somehow able to completely hide the recent button on a non-rooted device. How is that possible?
I have went through the following links:
Detect home button press in android
How can I detect user pressing HOME key in my activity?
How can I detect user pressing HOME key in my activity?
and all of the solutions used to work for older versions of Android OR they say that the home button click cannot be detected since it can be used by malicious apps.
How is this application able to do so?
Can someone share sample code/app on how to prevent the user exiting the lock screen app until they have successfully authenticated themselves?
Thank you.
With Device admin permission
https://developer.android.com/guide/topics/admin/device-admin
you can pragmatically lock unlock device.
That app also use permission for "retrieve running apps" android.permission.GET_TASKS, so with that we can detect current foreground running app.
check answer.
https://stackoverflow.com/a/17756786/1025070
with that if user try to press home and leave we can instant check app is not in forground, and relaunch our activity again. (its workaround to detect if user leave from app with Home press).
Check my app https://play.google.com/store/apps/details?id=com.udayalakmal.applock&hl=en
that add overlay of lockscreen on any app that can not bypass. use same check foreground running app.
#user2511882
- Created sample app that simply load Activity when device locked, and another activity when device unlock
https://github.com/UdayaLakmal/LockScreenDemo
**This is only a demo, you have to use receivers with background service for continue monitor device lock state and handle memory leaks, .Tested with Android 6 API 23
no need to monitor running apps since this only use with device lock screen.
**Check how I get Home button press event in Lockscreen activity.
WindowManager windowManager = (WindowManager) this.getSystemService(Context.WINDOW_SERVICE);
WindowManager.LayoutParams layoutParams = new WindowManager.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
layoutParams.type = WindowManager.LayoutParams.TYPE_APPLICATION_OVERLAY;
} else {
layoutParams.type = WindowManager.LayoutParams.TYPE_PHONE;
}
layoutParams.gravity = Gravity.TOP | Gravity.LEFT;
layoutParams.x = 0;
layoutParams.y = 0;
layoutParams.flags = WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON
| WindowManager.LayoutParams.FLAG_LAYOUT_IN_SCREEN;
View window = LayoutInflater.from(this).inflate(R.layout.activity_main, null, false);
windowManager.addView(window, layoutParams);
The following piece of code blocks the home, back and recents button as per the requirement.
Also requires the following permission in the manifest:
<uses-permission android:name="android.permission.SYSTEM_ALERT_WINDOW" />
You cant disable recent button and home button but you can achieve this by using Window Manager link, in one line its create an overlay over your android application screen.
I want to disable incoming call and text notification and use my app to show notification.
Logic is that my app will stay in background and on incoming call/text my app will popup with a page where I will show notification.
Please can anyone help me how Can I disable default incoming call/text notification.
I was able to hide incoming call notifications by using full screen activity.
incoming call notification is not visible only activity is visible.
obviously you need to create service to detect incoming call which will launch your activity.
Here is code I used for full screen activity
protected void onCreate(Bundle savedInstanceState) {
this.getWindow().getDecorView().setSystemUiVisibility(getSystemUiFlags());
setRequestedOrientation (ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
super.onCreate(savedInstanceState);
if (Build.VERSION.SDK_INT < 16) {
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
WindowManager.LayoutParams.FLAG_FULLSCREEN);
}
setContentView(R.layout.myviewxml);
}
the function
private static int getSystemUiFlags() {
return View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY
| View.SYSTEM_UI_FLAG_IMMERSIVE
| View.SYSTEM_UI_FLAG_HIDE_NAVIGATION
| View.SYSTEM_UI_FLAG_FULLSCREEN;
}
The manifest entry
<activity
android:name=".MyActivity"
android:label="#string/title_activity"
android:theme="#style/Theme.AppCompat.Light.NoActionBar"></activity>
Hope this helps somebody.
I am building a VoIP app and it has an incoming call screen. Instead showing the screen, I want to just show a heads up notification, if current foreground app is in full screen mode. Is this possible? Is there a way to check if the current running activity is in full screen?
WindowManager.LayoutParams lp = getWindow().getAttributes();
if(lp.flags == WindowManager.LayoutParams.FLAG_FULLSCREEN){
//Do your stuff
}
Edit
If the running app is not your app you need to take a different approach which possible only from API 11, and use View.OnSystemUiVisibilityChangeListener:
Callback to be invoked when the status bar changes visibility. This reports global changes to the system UI state, not what the application is requesting
I am creating a custom lock screen so that in my activity the Status
bar won't be there.
At the mean time i want to get the the status bar notifications such
as missed calls, new chat messages, new emails, new voice-mail, etc...
How to implement this?
please give me a hint