Detect and check if your app run in multi window mode

This example show how to detect and check if your app run in multi window mode, target Android N with Multi-Window Support, by calling isInMultiWindowMode() and override onMultiWindowModeChanged() methods.

package com.blogspot.android_er.androidmultiwindow;

import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.widget.TextView;

public class MainActivity extends AppCompatActivity {

    TextView textPrompt;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        textPrompt = (TextView)findViewById(R.id.prompt);

        if(isInMultiWindowMode()){
            textPrompt.setText("onCreate run In Multi Window Mode ");
        }else{
            textPrompt.setText("onCreate run NOT In Multi Window Mode ");
        }
    }

    @Override
    public void onMultiWindowModeChanged(boolean isInMultiWindowMode) {
        super.onMultiWindowModeChanged(isInMultiWindowMode);

        if(isInMultiWindowMode){
            textPrompt.setText("It is In Multi Window Mode ");
        }else{
            textPrompt.setText("It is NOT In Multi Window Mode ");
        }
    }
}

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:padding="16dp"
    android:orientation="vertical"
    tools:context="com.blogspot.android_er.androidmultiwindow.MainActivity">

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_margin="20dp"
        android:layout_gravity="center_horizontal"
        android:autoLink="web"
        android:text="http://android-er.blogspot.com/"
        android:textStyle="bold"/>
    <TextView
        android:id="@+id/prompt"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:textSize="28dp"
        android:textStyle="bold"/>
</LinearLayout>

Next:
- onConfigurationChanged() called when window size changed in Multi-Window Mode