Data Structure
Networking
RDBMS
Operating System
Java
MS Excel
iOS
HTML
CSS
Android
Python
C Programming
C++
C#
MongoDB
MySQL
Javascript
PHP
Physics
Chemistry
Biology
Mathematics
English
Economics
Psychology
Social Studies
Fashion Studies
Legal Studies
- Selected Reading
- UPSC IAS Exams Notes
- Developer's Best Practices
- Questions and Answers
- Effective Resume Writing
- HR Interview Questions
- Computer Glossary
- Who is Who
Detect home button press in android
This example demonstrates about Detect home button press in android
Step 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required details to create a new project.
Step 2 − Add the following code to res/layout/activity_main.xml.
<?xml version = "1.0" encoding = "utf-8"?> <LinearLayout xmlns:android = "http://schemas.android.com/apk/res/android" android:orientation = "vertical" android:layout_width = "match_parent" android:gravity = "center" android:layout_height = "match_parent"> <TextView android:id = "@+id/text" android:layout_width = "fill_parent" android:gravity = "center" android:textSize = "30sp" android:layout_height = "wrap_content" android:text = "Click here" /> </LinearLayout>
In the above code, we have taken a text view.
Step 3 − Add the following code to src/MainActivity.java
package com.example.myapplication;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.widget.TextView;
import android.widget.Toast;
public class MainActivity extends Activity {
TextView text;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
text = findViewById(R.id.text);
text.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
onUserLeaveHint();
}
});
}
@Override
protected void onUserLeaveHint() {
text.setText("Home buton pressed");
Toast.makeText(MainActivity.this,"Home buton pressed",Toast.LENGTH_LONG).show();
super.onUserLeaveHint();
}
}Let's try to run your application. I assume you have connected your actual Android Mobile device with your computer. To run the app from the android studio, open one of your project's activity files and click Run 
icon from the toolbar. Select your mobile device as an option and then check your mobile device which will display your default screen –
Now click on home button, it will show the result as follows
2K+ Views
