<?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:orientation="vertical" >

    <TextView

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

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

    <Button

        android:id="@+id/btn_webbrowser"

        android:layout_width="fill_parent"

        android:layout_height="wrap_content"

        android:text="Web Browser"

        android:onClick="onClickWebBrowser" />

    <Button

        android:id="@+id/btn_makcalls"

        android:layout_width="fill_parent"

        android:layout_height="wrap_content"

        android:text="Make Calls"

        android:onClick="onClickMakeCalls" />

    <Button

        android:id="@+id/btn_showMap"

        android:layout_width="fill_parent"

        android:layout_height="wrap_content"

        android:text="Show Map"

        android:onClick="onClickShowMap" />

</LinearLayout>

package com.lynx.intents;

import android.net.Uri;

import android.os.Bundle;

import android.app.Activity;

import android.content.Intent;

import android.view.View;

public class IntentsActivity extends Activity {

	int request_Code=1;

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.main);

    }

    public void onClickWebBrowser(View view){

    	Intent i=new Intent(android.content.Intent.ACTION_VIEW,Uri.parse("http://www.amazon.com"));

    	startActivity(i);

    }

    public void onClickMakeCalls(View view){

    	Intent i=new Intent(android.content.Intent.ACTION_DIAL,Uri.parse("tel:+13503350416"));

    	startActivity(i);

    }

    public void onClickShowMap(View view){

    	Intent i=new Intent(android.content.Intent.ACTION_VIEW,Uri.parse("geo:37.827500,-122.481670"));

    	startActivity(i);

    }

}