Develop Reference

Android - Overlay view is drawn at status bar in only tablet or foldable model

I made overlay view and I set this layout params like that.
DisplayMetrics matrix = new DisplayMetrics();
mManager.getDefaultDisplay().getMetrics(matrix);
mParams = new WindowManager.LayoutParams(
WindowManager.LayoutParams.WRAP_CONTENT,
WindowManager.LayoutParams.WRAP_CONTENT,
WindowManager.LayoutParams.TYPE_APPLICATION_OVERLAY,
WindowManager.LayoutParams.FLAG_NOT_TOUCHABLE | WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE | WindowManager.LayoutParams.FLAG_LAYOUT_IN_SCREEN,
PixelFormat.TRANSLUCENT
);
mParams.alpha = 0.8f;
mParams.gravity = Gravity.TOP | Gravity.LEFT;
mParams.x = 0;
mParams.y = 0;
But in this case, in tablet or fold model, overlay view is drawn from status bar.
Any other phone are not.. It didn't approach status bar..
how do i solve it??
I want to make overlay view is not drawn at status bar. Only under the status bar.
I put params.y to specific value but all tablet and foldable model have not same status bar.
So It is not what i want.

Fullscreen view with gravity.BOTTOM is unwantingly clipped when an overscan value is set

My Android (8.0+) app is implementing a narrow overlay along the bottom of the screen, but when a user sets an overscan value, it disappears. How can I make my view respect what is actually visible so Gravity.BOTTOM will not be clipped? I have tried countless combinations of flags, but nothing seems to ackknowledge the overscan value.
Point screen_size = new Point();
WindowManager.LayoutParams mParams;
WindowManager mWindowManager = getSystemService(WINDOW_SERVICE);
mWindowManager.getDefaultDisplay().getRealSize(screen_size);
layout = new LinearLayout(getApplicationContext());
layout.setOnTouchListener(this);
// color for debug.
layout.setBackgroundColor(0x55ff0000);
mParams = new WindowManager.LayoutParams(
screen_size.x,
40,
0,
0,
WindowManager.LayoutParams.TYPE_APPLICATION_OVERLAY,
WindowManager.LayoutParams.FLAG_LAYOUT_IN_SCREEN | WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE,
PixelFormat.TRANSLUCENT);
mParams.gravity = Gravity.BOTTOM;
mWindowManager.addView(layout, mParams);

How to change the WindowManager.LayoutParams' type programmatically?

I got a view that I am able to display on the lockscreen. But I want it to make it optional. Currently I use these params to achieve this:
WindowManager.LayoutParams params = new WindowManager.LayoutParams(
WindowManager.LayoutParams.WRAP_CONTENT,
WindowManager.LayoutParams.WRAP_CONTENT,
WindowManager.LayoutParams.TYPE_SYSTEM_ERROR,
WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED |
WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE |
WindowManager.LayoutParams.FLAG_WATCH_OUTSIDE_TOUCH |
WindowManager.LayoutParams.FLAG_LAYOUT_NO_LIMITS, PixelFormat.TRANSPARENT);
And for not showing it on the lockscreen I use
WindowManager.LayoutParams params = new WindowManager.LayoutParams(
WindowManager.LayoutParams.WRAP_CONTENT,
WindowManager.LayoutParams.WRAP_CONTENT,
WindowManager.LayoutParams.TYPE_PHONE,
WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE |
WindowManager.LayoutParams.FLAG_WATCH_OUTSIDE_TOUCH |
WindowManager.LayoutParams.FLAG_LAYOUT_NO_LIMITS, PixelFormat.TRANSPARENT);
Separately they work fine, but I want to change the type and flags programmatically. So I tried changing the WindowManager.LayoutParams with
params.flags &= ~WindowManager.LayoutParams.TYPE_SYSTEM_ERROR;
params.flags &= ~WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED;
params.flags |= WindowManager.LayoutParams.TYPE_PHONE;
windowManager.updateViewLayout(myView,params);
to remove the type, remove the flag and set a new type,
but that doesn't seem to work. Does anyone know how to do this correctly?

You are setting type values into flag. Try this instead:
params.flags &= ~WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED;
// type is no bit flag, so this should do it
params.type = WindowManager.LayoutParams.TYPE_PHONE;

Animation in status bar like in Mailbox app

Any idea how to implement animation in status bar like in Mailbox app?
Link to the app
What I'm curious the most is the fade in & fade out animation and that the list can be scrolled during it.
Any help appreciated. Thanks in advance.

This works for me in android 4.4.4 and 5.0.
WindowManager windowManager = (WindowManager) getSystemService(WINDOW_SERVICE);
int statusBarHeight = (int) Math.ceil(25 * getResources().getDisplayMetrics().density);
TextView textView = new TextView(this);
textView.setText("I am on top of status bar");
textView.setBackgroundColor(Color.BLACK);
textView.setGravity(Gravity.CENTER);
WindowManager.LayoutParams params = new WindowManager.LayoutParams(
WindowManager.LayoutParams.FILL_PARENT,
statusBarHeight,
WindowManager.LayoutParams.TYPE_SYSTEM_OVERLAY,
WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE|
WindowManager.LayoutParams.FLAG_NOT_TOUCH_MODAL|
WindowManager.LayoutParams.FLAG_LAYOUT_IN_SCREEN,
PixelFormat.TRANSLUCENT);
params.gravity = Gravity.TOP | Gravity.RIGHT;
windowManager.addView(textView, params);

Add multiple flags to windowmanager

I have a WindowManager params set up like this:
final WindowManager.LayoutParams params = new WindowManager.LayoutParams(
WindowManager.LayoutParams.FILL_PARENT,
WindowManager.LayoutParams.WRAP_CONTENT,
WindowManager.LayoutParams.TYPE_SYSTEM_ALERT,
WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE,
WindowManager.LayoutParams.FLAG_WATCH_OUTSIDE_TOUCH,
PixelFormat.TRANSLUCENT );
However, this is causing an error. It's fine if I remove on of the flags, but I want both. How can I do this?

Use a bit-wise OR for your flags to combine them bitwise: flag1 | flag2
final WindowManager.LayoutParams params = new WindowManager.LayoutParams(
WindowManager.LayoutParams.FILL_PARENT,
WindowManager.LayoutParams.WRAP_CONTENT,
WindowManager.LayoutParams.TYPE_SYSTEM_ALERT,
WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE |
WindowManager.LayoutParams.FLAG_WATCH_OUTSIDE_TOUCH,
PixelFormat.TRANSLUCENT );