Multiple Buttons

Here is an example for multiple buttons, even we can handle multiple buttons with single method(onClick(View)) or with unanimous object of OnClickListener interface,

activity_main.xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/LinearLayout2"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="horizontal"
    tools:context=".MainActivity" >

    <Button
        android:id="@+id/button_save"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/button_save" />

    <Button
        android:id="@+id/button_cancel"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/button_cancel" />

</LinearLayout>

strings.xml
<?xml version="1.0" encoding="utf-8"?>
<resources>
    <string name="app_name">Multiple Buttons Example</string>
    <string name="button_save">Save</string>
    <string name="button_cancel">Cancel</string>
</resources>

MainActivity.java

import android.app.Activity;

import android.os.Bundle;

import android.view.View;

import android.view.View.OnClickListener;

import android.widget.Button;

import android.widget.Toast;

import com.swamy.multiplebuttonsexample.R;

public class MainActivity extends Activity implements OnClickListener {

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

Button button_save = (Button) findViewById(R.id.button_save);

Button button_cancel = (Button) findViewById(R.id.button_cancel);

button_save.setOnClickListener(this);

button_cancel.setOnClickListener(this);

}

@Override

public void onClick(View v) {

switch (v.getId()) {

case R.id.button_save:

Toast.makeText(getApplicationContext(),

"You have clicked on Save button", Toast.LENGTH_SHORT)

.show();

break;

case R.id.button_cancel:

Toast.makeText(getApplicationContext(),

"You have clicked on Cancel button", Toast.LENGTH_SHORT)

.show();

break;

}

}

}