Android Button Example

In this tutorial, it shows on how to create a Button and add a click listener, when user click on the button, open an URL in your Android’s internet browser.
How it works?

1. Open “res/values/strings.xml” file, to add values.

<?xml version="1.0" encoding="utf-8"?>

<string name="btn">Click Me</string>

<string name="app_name">ESS Button</string>

</resources>

2. Open “res/layout/main.xml” file, to add button.

<?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/btnClickMe"

android:layout_width="fill_parent"

android:layout_height="wrap_content"

android:text="@string/btn" />

</LinearLayout>

3. Attach a click listener to the button. When user click on it, open mobile browser and display URL : www.erasersoftware-solution.com.www.erasersoftware-solution.com.

package ess.button.isourcecode;

import android.app.Activity;

import android.content.DialogInterface;

import android.content.DialogInterface.OnClickListener;

import android.content.Intent;

import android.net.Uri;

import android.os.Bundle;

import android.view.View;

import android.widget.Button;

public class ESSButtonActivity extends Activity{

/** Called when the activity is first created. */

Button btn;

@Override

public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.main);

btn=(Button) findViewById(R.id.btnClickMe);

btn.setOnClickListener(new View.OnClickListener() {

public void onClick(View v) {

// TODO Auto-generated method stub

Intent browser = new Intent(Intent.ACTION_VIEW,Uri.parse("http://i-sourcecode.blogspot.com"));

startActivity(browser);

}

});

}

4. Run the app

Programming Language: Java + XML
Programming IDE: Eclipse

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