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@RikkaW
Last active March 26, 2024 14:45
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show window in app_process (impossible to work from Android 14 QPR 3 or Android 15, as addView requires the calling process an Android app process)
token = new Binder();
try {
Context _context = android.app.ActivityThread.systemMain().getSystemContext();
final Context context = new ContextWrapper(_context) {
@Override
public Object getSystemService(String name) {
if (Context.WINDOW_SERVICE.equals(name)) {
WindowManager wm = (WindowManager) super.getSystemService(name);
if (wm != null) {
((android.view.WindowManagerImpl) wm).setDefaultToken(token);
}
return wm;
}
return super.getSystemService(name);
}
};
context.setTheme(android.R.style.Theme_Material_Light);
CharSequence label = context.getPackageManager().getApplicationLabel(context.getPackageManager().getApplicationInfo("com.android.settings", 0));
LogUtils.i("label " + label);
android.widget.Toast.makeText(context, "test", Toast.LENGTH_LONG).show();
LogUtils.i("toast");
android.view.WindowManager wm = context.getSystemService(WindowManager.class);
LogUtils.i("class: " + wm.getClass().getName());
//((android.view.WindowManagerImpl) wm).setDefaultToken(token);
LinearLayout root = new LinearLayout(context);
root.setBackground(new ColorDrawable(0xffffffff));
TextView textView = new TextView(context);
textView.setText("test");
root.addView(textView);
Button button = new Button(context);
button.setSoundEffectsEnabled(false);
button.setText("test");
button.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Toast.makeText(context, "?!", Toast.LENGTH_LONG).show();
}
});
root.addView(button);
WindowManager.LayoutParams params = new WindowManager.LayoutParams(
WindowManager.LayoutParams.WRAP_CONTENT,
WindowManager.LayoutParams.WRAP_CONTENT,
WindowManager.LayoutParams.TYPE_SYSTEM_DIALOG,
WindowManager.LayoutParams.FLAG_NOT_TOUCH_MODAL,
PixelFormat.TRANSLUCENT);
params.gravity = Gravity.CENTER;
params.x = 0;
params.y = 0;
wm.addView(root, params);
} catch (Throwable tr) {
LogUtils.e(tr.getMessage(), tr);
}
@twaik
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twaik commented Mar 26, 2024

Maybe there is some workaround for this? The most important thing I need is to draw something as an overlay from background process.
I am not writing viruses. Simply some oems put code to limit GPU performance of background apps.
Maybe SurfaceControl.Transactions?

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