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Android - How do you make a button on a screen overlay clickable

I am trying to implement a simple lockscreen through screen overlay. I added a button to the XML layout, the app successfully covered the screen but the button doesn't seem to work.
public WindowManager winManager;
public RelativeLayout wrapperView;
#Override
protected void onCreate(Bundle savedInstanceState). { ((KeyguardManager)getSystemService(Activity.KEYGUARD_SERVICE)).newKeyguardLock("IN").disableKeyguard();
PackageManager p = getPackageManager();
p.setComponentEnabledSetting(getComponentName(), PackageManager.COMPONENT_ENABLED_STATE_DISABLED, PackageManager.DONT_KILL_APP);
finish();
super.onCreate(savedInstanceState);
WindowManager.LayoutParams localLayoutParams = new WindowManager.LayoutParams( WindowManager.LayoutParams.TYPE_SYSTEM_OVERLAY, WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE|
WindowManager.LayoutParams.FLAG_NOT_TOUCH_MODAL|
WindowManager.LayoutParams.FLAG_LAYOUT_IN_SCREEN,
PixelFormat.TRANSLUCENT);
this.winManager = ((WindowManager)getApplicationContext().getSystemService(WINDOW_SERVICE));
this.wrapperView = new RelativeLayout(getBaseContext());
getWindow().setAttributes(localLayoutParams);
View.inflate(this, R.layout.lackiscreen, this.wrapperView);
this.winManager.addView(this.wrapperView, localLayoutParams);
}
public void dclick(View view){
this.winManager.removeView(this.wrapperView);
this.wrapperView.removeAllViews();
}

Android only allows very specific windows to receive touch events when they are an overlay. You need to get your flags right.
WindowManager.LayoutParams localLayoutParams = new WindowManager.LayoutParams(
ViewGroup.LayoutParams.WRAP_CONTENT,
ViewGroup.LayoutParams.WRAP_CONTENT,
WindowManager.LayoutParams.TYPE_PHONE,
WindowManager.LayoutParams.FLAG_NOT_TOUCH_MODAL | WindowManager.LayoutParams.FLAG_WATCH_OUTSIDE_TOUCH | WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE,
PixelFormat.TRANSLUCENT
);
Hope that helps. (Works for me at least)

How to make clickable overlay activity android? [duplicate]

I'm developing lock screen. And I need my lock screen activity be over all apps.
So, I have this:
LayoutInflater layoutInflater = (LayoutInflater) getSystemService(LAYOUT_INFLATER_SERVICE);
View oView = layoutInflater.inflate(R.layout.lock_screen, null); // lock_screen is .xml file
WindowManager.LayoutParams params = new WindowManager.LayoutParams(
WindowManager.LayoutParams.FLAG_FULLSCREEN,
WindowManager.LayoutParams.FLAG_FULLSCREEN,
WindowManager.LayoutParams.TYPE_SYSTEM_ALERT,
WindowManager.LayoutParams.FLAG_LAYOUT_IN_SCREEN,
PixelFormat.TRANSLUCENT);
WindowManager wm = (WindowManager) getSystemService(WINDOW_SERVICE);
wm.addView(oView, params);
It works, but not at all. Everything is frozen, the navigation baris working, but touch screen is not. How can I make only my activity be over everything and can't quit it?

This is because you've only overlaid a view, not the activity.

Adding layout views from an xml file to the content view

As a bit of background on this - I created a layout for a user interface that sat ontop of a GLSurfaceview. As I progressed I wanted to add adverts from admob on top of the GLSurfaceview. After some reading it seemed like the only way to do this was to create a new Layout view then add each dynamically created view to this. Then set the new Layout view as the content view. This means that all the views in my UI are dynamically created in java code.
My question is:
Is there any way you can use a view from an xml layout that is not set as the content view and somehow add it to the content view just like you would when dynamically creating a view?
I did try this but got null pointer exceptions from which ever view I tried to findViewById.
Any sort of write up explaining this would be helpful
EDIT added code
#Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
// Create an ad.
adView = new AdView(this);
adView.setAdSize(AdSize.SMART_BANNER);
adView.setAdUnitId(AD_UNIT_ID);
RelativeLayout layout = new RelativeLayout(this);
layout.setLayoutParams(new LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT));
AdRequest adRequest = new AdRequest.Builder()
.addTestDevice("******************************").build();
adView.loadAd(adRequest);
RelativeLayout.LayoutParams adParams =
new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.WRAP_CONTENT,
RelativeLayout.LayoutParams.WRAP_CONTENT);
adParams.addRule(RelativeLayout.ALIGN_PARENT_BOTTOM);
adParams.addRule(RelativeLayout.CENTER_HORIZONTAL);
final TextView Score = new TextView(this);
Score.setText(" 0");
RelativeLayout.LayoutParams scoreParams = new
RelativeLayout.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
Score.setLayoutParams(scoreParams);
Typeface tf = Typeface.createFromAsset(getAssets(),"Fonts/BOYCOTT_.ttf");
Score.setTextSize(getResources().getDimension(R.dimen.textsize));
Score.setTypeface(tf);
Score.setTextColor(0xFFFFFFFF);
// Check if the system supports OpenGL ES 2.0.
final ActivityManager activityManager = (ActivityManager) getSystemService(Context.ACTIVITY_SERVICE);
final ConfigurationInfo configurationInfo = activityManager.getDeviceConfigurationInfo();
final boolean supportsEs2 = configurationInfo.reqGlEsVersion >= 0x20000;
if (supportsEs2)
{
// Request an OpenGL ES 2.0 compatible context.
mGLSurfaceView = new RBGLSurfaceView(this); new GLSurfaceView(this);
mGLSurfaceView.setEGLContextClientVersion(2);
final DisplayMetrics displayMetrics = new DisplayMetrics();
getWindowManager().getDefaultDisplay().getMetrics(displayMetrics);
mGoogleApiClient = getApiClient();
mGLSurfaceView.setRenderer(new RBRenderer(this, Score, mGoogleApiClient),displayMetrics);
layout.addView(mGLSurfaceView);
layout.addView(Score, scoreParams);
layout.addView(adView, adParams);
//Set main renderer
setContentView(layout);
}
else
{
// This is where you could create an OpenGL ES 1.x compatible
// renderer if you wanted to support both ES 1 and ES 2.
return;
}
}
Ok so the above code is creating an adview, textview and surface view and adding them to the layout which is then getting set as the contentview - works great.
But is it possible to add the text view from an xml layout even if this xml layout is not set as the contentview?
Doing this doesnt work
final TextView test= (TextView) findViewById(R.id.test);
// set properties here etc
layout.adView(test);
because 'test' is null because the layout in which the view 'test' belongs to is not the set as the content view.

is it possible to add the text view from an xml layout even if this xml layout is not set as the contentview?
Yes, it's totally possible! Try this:
LayoutInflater inflater = (LayoutInflater) this.getSystemService(this.LAYOUT_INFLATER_SERVICE);
View textView = inflater.inflate(R.layout.text_view, null);
layout.addView(textView);
Hope this helps!

TYPE_PHONE overlay view doesn't allow child GridView to capture onItemClick event

My applications draws an overlay which has a GridView as it's child. All the clicks are being captured by the overlay veiw's onTouch event and nothing is passed to the GridView's onItemClick event. The code which creates it is:
LayoutInflater inflater = (LayoutInflater) getSystemService(LAYOUT_INFLATER_SERVICE);
TaskBarView = inflater.inflate(R.layout.view_overlay, null);
TaskBarViewParams = new WindowManager.LayoutParams(TaskBarInactiveWidth, TaskBarHeight,
LayoutParams.TYPE_PHONE,
WindowManager.LayoutParams.FLAG_NOT_TOUCH_MODAL |
WindowManager.LayoutParams.FLAG_WATCH_OUTSIDE_TOUCH,
PixelFormat.TRANSLUCENT);
TaskBarViewParams.gravity = Gravity.LEFT | Gravity.TOP;
windowManager = (WindowManager) getSystemService(WINDOW_SERVICE);
windowManager.addView(TaskBarView, TaskBarViewParams);
Note: This problem only comes into picture on API levels 16 and up. The GridView captures it's onItemClick and the overlay captures it's onTouch properly as it should below API level 16.
Am I missing a flag or something?

Full Screen AlertDialog changes the layout color

I'm using the code from another answer here:
AlertDialog.Builder adb = new AlertDialog.Builder(this);
Dialog d = adb.setView(new View(this)).create();
// (That new View is just there to have something inside the dialog that can grow big enough to cover the whole screen.)
WindowManager.LayoutParams lp = new WindowManager.LayoutParams();
lp.copyFrom(d.getWindow().getAttributes());
lp.width = WindowManager.LayoutParams.FILL_PARENT;
lp.height = WindowManager.LayoutParams.FILL_PARENT;
d.show();
d.getWindow().setAttributes(lp);
I really find it usefl to make an alertDialog full screen, but the colors end up being a black background with white text, instead of a white background with black text. I have no idea how this code could be changing the color. Could anyone provide some info?

In the line:
Dialog d = adb.setView(new View(this)).create();
you ceate a new View which defaults to black background.
Then you use this view attributes everywhere:
lp.copyFrom(d.getWindow().getAttributes());
d.getWindow().setAttributes(lp);
Solution:
After creating the new view, set the background:
View view = new View(this);
view.setBackgroundColor(...);
Dialog d = adb.setView(view).create();
Regards.