popup window on incoming call screen like truecaller

Question

i am trying to add popup window on incoming call screen as true caller but fail to implement .let me know what is logic behind this and how i can implement this

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Answer 1

try this

AlertDialog.Builder builder = new AlertDialog.Builder(context.getApplicationContext());
            LayoutInflater inflater = LayoutInflater.from(context);
            View dialogView = inflater.inflate(R.layout.caller_dialog, null);

            ImageView button = dialogView.findViewById(R.id.close_btn);

            builder.setView(dialogView);
            final AlertDialog alert = builder.create();
            alert.getWindow().requestFeature(Window.FEATURE_NO_TITLE);
            alert.getWindow().setType(WindowManager.LayoutParams.TYPE_PHONE);
            alert.setCanceledOnTouchOutside(true);
            alert.show();
            WindowManager.LayoutParams lp = new WindowManager.LayoutParams();
            Window window = alert.getWindow();
            window.addFlags(WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE);
            window.clearFlags(WindowManager.LayoutParams.FLAG_DIM_BEHIND);
            window.setGravity(Gravity.TOP);
            lp.copyFrom(window.getAttributes());
            //This makes the dialog take up the full width
            lp.width = WindowManager.LayoutParams.MATCH_PARENT;
            lp.height = WindowManager.LayoutParams.WRAP_CONTENT;
            window.setAttributes(lp);
            button.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View view) {
                    //close the service and remove the from from the window
                    alert.dismiss();
                }
            });

And add a permission check in your onCreate()

if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M && !Settings.canDrawOverlays(getActivity())) {
        //If the draw over permission is not available open the settings screen
        //to grant the permission.
        Intent intent = new Intent(Settings.ACTION_MANAGE_OVERLAY_PERMISSION,
                Uri.parse("package:" + getActivity().getPackageName()));
        startActivityForResult(intent, CODE_DRAW_OVER_OTHER_APP_PERMISSION);
    }

And the onActivityResult()

private static final int CODE_DRAW_OVER_OTHER_APP_PERMISSION = 2084; 
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
    if (requestCode == CODE_DRAW_OVER_OTHER_APP_PERMISSION) {

        //Check if the permission is granted or not.
        if (resultCode == RESULT_OK) {

        }
        else
            {
                // Permission is not available
            }

    } else {
        super.onActivityResult(requestCode, resultCode, data);
    }
}

And don't forget to add permission in the manifest