My task is receiving all motion events in android application with good embedding (library variant). I create my Window.Callback wrapper.
public class WindowCallback implements Window.Callback {
private final Window.Callback wrapper;
public WindowCallback(Window.Callback callback) {
this.wrapper = callback;
}
@Override
public boolean dispatchKeyEvent(KeyEvent event) {
return wrapper.dispatchKeyEvent(event);
}
@Override
public boolean dispatchKeyShortcutEvent(KeyEvent event) {
return wrapper.dispatchKeyShortcutEvent(event);
}
@Override
public boolean dispatchTouchEvent(MotionEvent event) {
return wrapper.dispatchTouchEvent(event);
}
// other methods omitted
}
Then, instantiate it in Activity
:
final Window window = getWindow();
final Window.Callback windowCallback = window.getCallback();
final WindowCallback callbackWrapper = new WindowCallback(windowCallback);
window.setCallback(interceptCallback);
But when I have Toolbar
in Activity
, this Toolbar
capture Window.Callback
in method setActionBar(Toolbar)
or setSupportActionBar(Toolbar)
. Code snippet from framework Activity
:
if (toolbar != null) {
final ToolbarActionBar tbab = new ToolbarActionBar(toolbar, getTitle(), this);
mActionBar = tbab;
mWindow.setCallback(tbab.getWrappedWindowCallback());
And ToolbarActionBar
from support library:
ToolbarActionBar(Toolbar toolbar, CharSequence title, Callback windowCallback) {
this.mDecorToolbar = new ToolbarWidgetWrapper(toolbar, false);
this.mWindowCallback = new ToolbarActionBar.ToolbarCallbackWrapper(windowCallback);
this.mDecorToolbar.setWindowCallback(this.mWindowCallback);
toolbar.setOnMenuItemClickListener(this.mMenuClicker);
this.mDecorToolbar.setWindowTitle(title);
}
Question is - How to check when Toolbar
catch Window.Callback
, but without creating base activity and extending from it. This check should execute not very frequently. (OnGlobalLayoutListener
not our case)
from Can't receive Motion Events with Window.Callback
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