[java] Android overlay a view ontop of everything?

Can you overlay a view on top of everything in android?

In iPhone I would get the new view set its frame.origin to (0,0) and its width and height to the width and height of self.view. Adding it to self.view would then cause it to act as an overlay, covering the content behind (or if it had a transparent background then showing the view behind).

Is there a similar technique in android? I realise that the views are slightly different (there are three types (or more...) relativelayout, linearlayout and framelayout) but is there any way to just overlay a view on top of everything indiscriminately?

I have just made a solution for it. I made a library for this to do that in a reusable way that's why you don't need to recode in your XML. Here is documentation on how to use it in Java and Kotlin. First, initialize it from an activity from where you want to show the overlay-

AppWaterMarkBuilder.doConfigure()
                .setAppCompatActivity(MainActivity.this)
                .setWatermarkProperty(R.layout.layout_water_mark)
                .showWatermarkAfterConfig();

Then you can hide and show it from anywhere in your app -

  /* For hiding the watermark*/
  AppWaterMarkBuilder.hideWatermark() 

  /* For showing the watermark*/
  AppWaterMarkBuilder.showWatermark() 

Gif preview -

<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/root_view"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >

<LinearLayout
    android:id = "@+id/Everything"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" >
    <!-- other actual layout stuff here EVERYTHING HERE -->

   </LinearLayout>

<LinearLayout
    android:id="@+id/overlay"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_gravity="right" >
</LinearLayout>

Now any view you add under LinearLayout with android:id = "@+id/overlay" will appear as overlay with gravity = right on Linear Layout with android:id="@+id/Everything"

The best way is ViewOverlay , You can add any drawable as overlay to any view as its overlay since Android JellyBeanMR2(Api 18).

Add mMyDrawable to mMyView as its overlay:

mMyDrawable.setBounds(0, 0, mMyView.getMeasuredWidth(), mMyView.getMeasuredHeight())
mMyView.getOverlay().add(mMyDrawable)

I have tried the awnsers before but this did not work. Now I jsut used a LinearLayout instead of a TextureView, now it is working without any problem. Hope it helps some others who have the same problem. :)

    view = (LinearLayout) findViewById(R.id.view); //this is initialized in the constructor
    openWindowOnButtonClick();

public void openWindowOnButtonClick()
{
    view.setAlpha((float)0.5);
    FloatingActionButton fb = (FloatingActionButton) findViewById(R.id.floatingActionButton);
    final InputMethodManager keyboard = (InputMethodManager) getSystemService(getBaseContext().INPUT_METHOD_SERVICE);
    fb.setOnClickListener(new View.OnClickListener()
    {
        @Override
        public void onClick(View v)
        {
            // check if the Overlay should be visible. If this value is false, it is not shown -> show it.
            if(view.getVisibility() == View.INVISIBLE)
            {
                view.setVisibility(View.VISIBLE);
                keyboard.toggleSoftInput(InputMethodManager.SHOW_IMPLICIT, 0);
                Log.d("Overlay", "Klick");
            }
            else if(view.getVisibility() == View.VISIBLE)
            {
                view.setVisibility(View.INVISIBLE);
                keyboard.toggleSoftInput(0, InputMethodManager.HIDE_IMPLICIT_ONLY);
            }

You can use bringToFront:

    View view=findViewById(R.id.btnStartGame);
    view.bringToFront();