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Android Button setOnClickListener Example

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1. Add a button to your "res/layout/main.xml" file. exmaple:

   <?xml version="1.0" encoding="utf-8"?>
   <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
       android:layout_width="fill_parent"
       android:layout_height="fill_parent"
       android:orientation="vertical" >
   
       <Button
           android:id="@+id/button1"
           android:layout_width="wrap_content"
           android:layout_height="wrap_content"
           android:text="Click Me" />
   
   </LinearLayout>

2. Now attach an event Click Listener to the button. example:

   button = (Button) findViewById(R.id.button1);
   button.setOnClickListener(new OnClickListener() {/* Some Code */ });

3. Here is the complete code for it

[code lang="java"] package com.demo.buttonexample; import android.app.Activity; import android.content.Intent; import android.net.Uri; import android.os.Bundle; import android.widget.Button; import android.view.View; import android.view.View.OnClickListener; public class MainActivity extends Activity { Button button; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); btnClick(); } public void btnClick() { button = (Button) findViewById(R.id.button1); button.setOnClickListener(new OnClickListener() { @Override public void onClick(View arg0) { Intent browserIntent = new Intent(Intent.ACTION_VIEW, Uri.parse("http://www.howtosolvenow.com")); startActivity(browserIntent); } }); } }