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

Try wrapping your dialog_custom_layout.xml into RelativeLayout . That worked for me.

Answer 2

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

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
        xmlns:android="http://schemas.android.com/apk/res/android"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:background="@color/colorPrimary">

    <!-- Your dialog content here -->

</LinearLayout>

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

<style name="FullScreenDialog" parent="Theme.AppCompat.Dialog">
    <item name="android:windowBackground">@android:color/transparent</item>
</style>

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();
    }
}

Answer 3

I'm using a Activity with Dialog theme. In this case, fullscreen worked this way:

int mUIFlag = View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY
            | View.SYSTEM_UI_FLAG_FULLSCREEN
            | View.SYSTEM_UI_FLAG_HIDE_NAVIGATION;

@Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        getWindow().getDecorView().setSystemUiVisibility(mUIFlag);

        getWindow().setLayout(WindowManager.LayoutParams.MATCH_PARENT, WindowManager.LayoutParams.MATCH_PARENT);
        setContentView(R.layout.lockscreen_activity);
}

Answer 4

The answer does not work for me(sdk 21, samsung galaxy s5). After searching and testing, I find that the key point for setting a dialog for fullscreen is the <item name="android:windowIsFloating">false</item> in your dialog style. Most styles of Dialog in sdk set it true! Set it false in a style and use it in

AlertDialog.Builder = new AlertDialog.Builder(getActivity(), R.style.YourStyle);

your style may look like

<style name="YourStyle">
    <item name="android:windowIsFloating">false</item>
    ...
</style>

after setting it false, it should be fullscreen. And more, you can use

dialog.getWindow.setLayout(WindowManager.LayoutParams.MATCH_PARENT, WindowManager.LayoutParams.WRAP_CONTENT);

to set it's height to wrap_content. Hope to help someone.

Answer 5

try this code

protected void openDialog() {
        Dialog dialog = new Dialog(this);
        dialog.addContentView(new View(this), (new LayoutParams(LayoutParams.FILL_PARENT,LayoutParams.FILL_PARENT)));
        dialog.show();
    }