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Android: Programatically rotating the text inside a button

{Visual Aid}
I am making an application with a drag and drop menu. User can fill out three edit texts (width, height, and rotation) then press on "add new" button and a new button with the specified values is created at the origin. However if the rotation attribute is anything other than 0 say 45 degrees, then it rotates the whole button along with the text. I would like for the text to remain horizontal with no rotation. I have looked up but the post all refer back to the rotation attribute which i am already using.
onViewCreated()
tvAddTable = view.findViewById(R.id.btn_add_table);
tvWidth = view.findViewById(R.id.et_width);
tvHeight = view.findViewById(R.id.et_height);
tvRotation = view.findViewById(R.id.et_rotation);
mSize = new Point();
mDisplay = Objects.requireNonNull(getActivity()).getWindowManager().getDefaultDisplay();
mDisplay.getSize(mSize);
final View.OnTouchListener touchListener = this;
tvAddTable.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {[enter image description here][1]
ConstraintLayout layout = view.findViewById(R.id.floor_layout);
//set the properties for button
Button btnTag = new Button(getContext());
btnTag.setLayoutParams(new ViewGroup.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT));
if(ids.isEmpty()){
ids.add(0);
}else{
ids.add(ids.size());
}
btnTag.setId(ids.size());
btnTag.setText(Integer.toString(btnTag.getId()));
//add button to the layout
layout.addView(btnTag);
btnTag.setLayoutParams(new ConstraintLayout.LayoutParams(Integer.parseInt(tvWidth.getText().toString()), Integer.parseInt(tvHeight.getText().toString())));
btnTag.setRotation(Integer.parseInt(tvRotation.getText().toString()));
btnTag.setOnTouchListener(touchListener);
}
});

The rotation attribute rotates the entire view, not just the text or just the background. That's by design. There is no text or background rotation attribute. If you need that, make a custom view.
If you only want the background to rotate, you can probably do it by setting the background drawable to a RotateDrawable that wraps the background you want.

Method to capture the whole Screen from a Floating Window Application

I'm trying to do implement a floating widget button(like the Facebook Messenger) which is displayed over the other app. The button should be able to interfere with the displayed view of the other app and capture the whole smartphone screen underneath.
The floating button is already implemented and works fine on every app. Getting the root view and printing out the bitmap of this floating view will just return the floating button image. I think the floating window cant detect the view of the apps underneath.
One possible solution could be to start the other application as a separate activity and get its view, but I am not sure how to do that. Maybe there is some easier way to achieve this?
//Creating the floating window and set its Layout parameters
mFloatViewLayoutParams = new WindowManager.LayoutParams();
mFloatViewLayoutParams.format = PixelFormat.TRANSLUCENT;
mFloatViewLayoutParams.flags = WindowManager.LayoutParams.FORMAT_CHANGED;
mFloatViewLayoutParams.type = Build.VERSION.SDK_INT >= Build.VERSION_CODES.O
? WindowManager.LayoutParams.TYPE_APPLICATION_OVERLAY
: WindowManager.LayoutParams.TYPE_BASE_APPLICATION;
mFloatViewLayoutParams.gravity = Gravity.START;
mFloatViewLayoutParams.width = WindowManager.LayoutParams.WRAP_CONTENT;
mFloatViewLayoutParams.height = WindowManager.LayoutParams.WRAP_CONTENT;
// adding the floatview to the WindowManager
LayoutInflater inflater = LayoutInflater.from(activity);
mFloatView = inflater.inflate(R.layout.float_view_layout, null);
mWindowManager.addView(mFloatView, mFloatViewLayoutParams);
...
// some clickListener to start the screenshot
ImageButton imageButton = mFloatView.findViewById(R.id.imageButton);
imageButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(final View v) {
mActivity.runOnUiThread(new Runnable() {
#Override
public void run() {
// here I want to get the view of the whole screen to
screenshot it
}
});
}
});
What I don't want: I don't want to screenshot the view of my main activity which starts the floating button.
I am really out of ideas about how to handle this challenge. Hopefully, someone has a guess!
Cheers!

Unable to enter the if statement | Android Studio

I am trying to fade two images back and forth:
Image1 with an id of imageone
Image2 with an id of imagetwo
For both the images, I have linked onClick in UI properties to the onClick method in the below Java code.
After the launching the app, when I click on image1, it is supposed to fade out and image2 should fade IN.
After analysis, I determined that the flow is not entering the if statement and is always getting directed to else no matter what.
How can I solve this?
Why is the if statement if (view.getId() == R.id.imageone) not letting the flow inside it even though the entry condition view.getId() == R.id.imageone is true?
public class MainActivity extends AppCompatActivity {
public void onClick(View view) {
ImageView imageone = (ImageView) findViewById(R.id.imageone);
ImageView imagetwo = (ImageView) findViewById(R.id.imagetwo);
if (view.getId() == R.id.imageone) {
imageone.animate().alpha(0f).setDuration(2000);//image1 fade OUT
imagetwo.animate().alpha(1f).setDuration(2000);//image2 fade IN
} else {
imagetwo.animate().alpha(0f).setDuration(2000);//image2 fade OUT
imageone.animate().alpha(1f).setDuration(2000);//image1 fade IN
}
}
}

#Narendra Jadon : You are right ,The problem was with the layout. The image two was on top of image one. And i solved it by setting the image one on top of image 2. Thank you everyone for your help.

screenshots don't change when layout changes

I'm using ViewPager as my main navigation in app. I'm using ActionBar, as well. What I want to achieve is that when user clicks search button in ActionBar I want to have blurred background. So my approach is to take a screenshot, blur it, set as ImageView and display as an overlay over the whole view. And it works. But problem is that actually when I first open search it displays proper screenshot. Then I turn overlay off, change page in ViewPager, click search again and ... I can see the previous screenshot- not new one with new page on it. Here are my snippets of code:
show and hide overlay on search click (I'm passing R.id.container view which is parent id of my content view, menuOverlay is my ImageView referenced from layout)
Here's my method that takes screenshot and makes it blurry
// Ad. 1
item.setOnActionExpandListener(new MenuItem.OnActionExpandListener() {
#Override
public boolean onMenuItemActionExpand(MenuItem menuItem) {
if(menuItem.getItemId() == R.id.action_search) {
menuOverlay.setImageBitmap(Utils.takeSnapshot(findViewById(R.id.container)));
menuOverlay.setVisibility(View.VISIBLE);
}
return true;
}
#Override
public boolean onMenuItemActionCollapse(MenuItem menuItem) {
if(menuItem.getItemId() == R.id.action_search) {
menuOverlay.setVisibility(View.GONE);
}
return true;
}
});
// Ad. 2
public static Bitmap takeSnapshot(View v) {
v.setDrawingCacheEnabled(true);
v.buildDrawingCache();
Bitmap bm = v.getDrawingCache();
Bitmap scaled = Bitmap.createScaledBitmap(bm, bm.getWidth()/5, bm.getHeight()/5, false);
return Utils.fastblur(scaled, 5);
}
I;m using fast blur algorithm found somewhere here on StackOverflow which is quite fast.
Where's the problem? Why it happens?

ok, I found the answer. if you want to always have "fresh" screenshot you need to destroy cache after all operations:
v.setDrawingCacheEnabled(false);

How to draw a view on top of everything?

I want to make an app that can create notification on the screen on top of anything that is currently being displayed. Something like the Go SMS message popup or something like the ChatHead in the following picture:
It would be even better if it is possible to draw it dynamically including touch events.What is the conventional or standard way to do this?
Example:
Like an Icon that can be clicked or dragged no matter whether you are on home screen or app drawer or other apps.Pay attention to the circular icons near the edges of the screen in the picture posted. You can drag them anywhere in any app.

What you are looking for is System Alert Window.
There's a library called StandOut! which will assist you in creating such apps.

Here is how things like Toast and dialog windows work:
In the case where just adding or bringing to front does not work, say when you are having a service add its own view to another client activity or application (FaceUnlock does this), or you cannot depend on hierarchies, you need to use the window manager and a window token to do the trick. You can then create layouts and take advantage of animations and hardware acceleration as before.
WindowManager windowManager = (WindowManager) getBaseContext().getSystemService(Context.WINDOW_SERVICE);
WindowManager.LayoutParams layoutParams = new WindowManager.LayoutParams(WindowManager.LayoutParams.FIRST_SUB_WINDOW);
layoutParams.width = 300;
layoutParams.height = 300;
layoutParams.format = PixelFormat.RGBA_8888;
layoutParams.flags =
WindowManager.LayoutParams.FLAG_LAYOUT_IN_SCREEN
| WindowManager.LayoutParams.FLAG_HARDWARE_ACCELERATED;
layoutParams.token = getWindow().getDecorView().getRootView().getWindowToken();
//Feel free to inflate here
mTestView = new View(this);
mTestView.setBackgroundColor(Color.RED);
//Must wire up back button, otherwise it's not sent to our activity
mTestView.setOnKeyListener(new View.OnKeyListener() {
#Override
public boolean onKey(View v, int keyCode, KeyEvent event) {
if (keyCode == KeyEvent.KEYCODE_BACK) {
onBackPressed();
}
return true;
}
});
windowManager.addView(mTestView, layoutParams);
Then be sure to remove the view onDestroy (or onPause) or you will crash
if (mTestView != null) {
WindowManager windowManager = (WindowManager) getBaseContext().getSystemService(Context.WINDOW_SERVICE);
if (mTestView.isShown()) {
windowManager.removeViewImmediate(mTestView);
}
}

You don't need a new activity to do this. All you need to do is to add another view into your existing activity and bring it to the front, and draw/write the things that you want into that view.
If you want to do special things with this extra view, you could create your own view class
class DrawOnTop extends View {
public DrawOnTop(Context activity) {
super(activity);
}
#Override
protected void onDraw(Canvas canvas) {
// put your drawing commands here
}
}
and then you do something like
DrawOnTop mDraw = new DrawOnTop(this);
addContentView(mDraw, new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT));
mDraw.bringToFront();
Then to force it to draw, you need to use mDraw.invalidate();

You could have the parent of your whole layout as RelativeLayout. The first child being the "root" of your main layout. Anything after that can be considered an overlay which is placeable to your whims.
Example:
<RelativeLayout>
<LinearLayout>
... Main Layout here ...
</LinearLayout>
<TextView left="20dip" top="20dip" text="Overlay" alpha="0.7" />
</RelativeLayout>

The best way is to start a service with your application.
Create an ImageView.
Set the LayoutParams of the Image View.
Add the view along with the params to the window manager when the service is created.
ALL SET
Your Image sticks to your window (At any screen over all apps), till you application is closed.
You can even add onclicklisteners and ontouchlisteners to the imageview.
Eg. OnClick listeners to perform some actions and Ontouchlisteners move the image along the screen.