拍照必须设置权限：

<uses-permission android:name="android.permission.CAMERA"/>

1、布局main.xml

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

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent" android:gravity="center_horizontal" > <SurfaceView android:id="@+id/mySurfaceView" android:gravity="center_horizontal" android:layout_width="wrap_content" android:layout_height="200px" /> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="wrap_content" android:gravity="center_horizontal" > <Button android:id="@+id/btnOpen" android:textSize="18px" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="打开" /> <Button android:id="@+id/btnClose" android:textSize="18px" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="关闭" /> <Button android:id="@+id/btnTake" android:textSize="18px" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="拍照" /> </LinearLayout>

    2、初始化组件：private SurfaceView mySurfaceView = null;//SurfaceView的引用private SurfaceHolder mySurfaceHolder = null;//SurfaceHolder的引用private Button btnOpen = null;//打开按钮private Button btnClose = null;//关闭按钮private Button btnTake = null;//拍照按钮

添加监听器：OnClickListener, SurfaceHolder.Callback super.onCreate(savedInstanceState);

//全屏	requestWindowFeature(Window.FEATURE_NO_TITLE); 	getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN ,  	WindowManager.LayoutParams.FLAG_FULLSCREEN);        setContentView(R.layout.main);        mySurfaceView = (SurfaceView) findViewById(R.id.mySurfaceView);//得到SurfaceView的引用    btnOpen = (Button) findViewById(R.id.btnOpen);//得到按钮的引用    btnClose = (Button) findViewById(R.id.btnClose);//得到按钮的引用    btnTake = (Button) findViewById(R.id.btnTake);//得到按钮的引用    btnOpen.setOnClickListener(this);//为按钮添加监听    btnClose.setOnClickListener(this);//为按钮添加监听    btnTake.setOnClickListener(this);//为按钮添加监听            mySurfaceHolder = mySurfaceView.getHolder();//获得SurfaceHolder    mySurfaceHolder.addCallback(this);//添加接口的实现    mySurfaceHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);

3、使用CAMERA拍照 private Camera myCamera = null;//Camera的引用 boolean isView = false;//是否在浏览中

1）、初始化照相机:

public void initCamera(){ if(!isView){ myCamera = Camera.open(); } if(myCamera != null && !isView){ try { Camera.Parameters myParameters = myCamera.getParameters(); myParameters.setPictureFormat(PixelFormat.JPEG); //真机删除setPreviewSize方法 myParameters.setPreviewSize(200, 200);//屏幕大小 myCamera.setParameters(myParameters); myCamera.setPreviewDisplay(mySurfaceHolder); myCamera.startPreview();//立即运行Preview } catch (IOException e) {//捕获异常 e.printStackTrace();//打印错误信息 } isView = true; } }

2、打开/关闭和拍照	@Overridepublic void onClick(View v) {	// TODO Auto-generated method stub	switch (v.getId()) {	//打开照相机	case R.id.btnOpen:		initCamera();		break;	case R.id.btnClose:		if(myCamera != null && isView){//当正在显示时			isView = false;			myCamera.stopPreview();			myCamera.release();			myCamera = null;		}		break;			//拍照	case R.id.btnTake:		myCamera.takePicture(myShutterCallback, myRawCallback, myjpegCallback);		break;	}}//相机快门关闭ShutterCallback myShutterCallback = new ShutterCallback() {		@Override	public void onShutter() {		// TODO Auto-generated method stub			}};//照片二进制流生成PictureCallback myRawCallback = new PictureCallback() {		@Override	public void onPictureTaken(byte[] data, Camera camera) {		// TODO Auto-generated method stub			}};//预览图片PictureCallback myjpegCallback = new PictureCallback(){	@Override	public void onPictureTaken(byte[] data, Camera camera) {		Bitmap bm = 	BitmapFactory.decodeByteArray(data, 0, data.length);		ImageView myImageView = 		(ImageView) findViewById(R.id.myImageView);		myImageView.setImageBitmap(bm);//将图片显示到下方的ImageView中				isView = false;		myCamera.stopPreview();		myCamera.release();		myCamera = null;		initCamera();//初始化相机	}};