アプリケーションからカメラを起動して静止画を取得する方法

<?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" >
	<ImageView
		android:id="@+id/imageView1"
		android:layout_width="fill_parent"
		android:layout_height="wrap_content"
		android:layout_weight="1"
		android:background="#00ff00"/>
	<Button
	    android:id="@+id/button1"
	    android:layout_width="fill_parent"
	    android:layout_height="wrap_content"
	    android:text="Take a picture!"/>
</LinearLayout>

package com.keicode.android.test;

import android.app.Activity;
import android.content.Intent;
import android.graphics.Bitmap;
import android.os.Bundle;
import android.provider.MediaStore;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.ImageView;

public class CameraTest1Activity extends Activity {
	
	static final int REQUEST_CAPTURE_IMAGE = 100;
	
	Button button1;
	ImageView imageView1;
	
	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.main);
		findViews();
		setListeners();
	}
	
	protected void findViews(){
		button1 = (Button)findViewById(R.id.button1);
		imageView1 = (ImageView)findViewById(R.id.imageView1);
	}
	
	protected void setListeners(){
		button1.setOnClickListener(new OnClickListener(){
			@Override
			public void onClick(View v) {
				Intent intent = new Intent(
					MediaStore.ACTION_IMAGE_CAPTURE);
				startActivityForResult(
					intent,
					REQUEST_CAPTURE_IMAGE);
			}
		});
	}

	@Override
	protected void onActivityResult(
		int requestCode, 
		int resultCode, 
		Intent data) {
		if(REQUEST_CAPTURE_IMAGE == requestCode 
			&& resultCode == Activity.RESULT_OK ){
			Bitmap capturedImage = 
				(Bitmap) data.getExtras().get("data");
			imageView1.setImageBitmap(capturedImage);
		}
	}
	
}