Custom Dialog in full screen?

Question

Is there any way to make my Dialog view full screen, i.e dialog occupy the entire screen (like an Activity). I tried using the LayoutParams and styles like

Answer 1

Here are steps how to create a full screen dialog with custom layout which occupies the entire screen without any padding from each site.

Step 1: Define your custom dialog layout named layout_fullscreen_dialog.xml

Step 2: Define a new style in styles.xml named FullScreenDialog

Step 3: Write a method which creates and shows a dialog

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        createAndShowDialog(this);
    }

    // This method used to create and show a full screen dialog with custom layout.
    public void createAndShowDialog(Context context) {
        Dialog dialog = new Dialog(context, R.style.FullScreenDialog);
        dialog.setContentView(R.layout.layout_fullscreen_dialog);

        WindowManager.LayoutParams layoutParams = dialog.getWindow().getAttributes();
        dialog.getWindow().setLayout(WindowManager.LayoutParams.MATCH_PARENT, WindowManager.LayoutParams.MATCH_PARENT);
        dialog.getWindow().setAttributes(layoutParams);
        dialog.show();
    }
}