Camera摄像头拍照

请看例子:
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"    >    <Button android:layout_width="match_parent" android:text="打开按钮" android:id="@+id/button1" android:layout_height="wrap_content"></Button>    <Button android:layout_width="match_parent" android:text="关闭按钮" android:id="@+id/button2" android:layout_height="wrap_content"></Button>    <Button android:layout_width="match_parent" android:text="拍照按钮" android:id="@+id/button3" android:layout_height="wrap_content"></Button><SurfaceView android:id="@+id/mySurfaceView" android:gravity="center_horizontal" android:layout_width="fill_parent"android:layout_height="300px" /><ImageView android:id="@+id/myImageView"android:layout_width="fill_parent" android:layout_height="300px" /></LinearLayout>

AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?><manifest xmlns:android="http://schemas.android.com/apk/res/android"      package="com.test"      android:versionCode="1"      android:versionName="1.0">    <uses-sdk android:minSdkVersion="8" />    <application android:icon="@drawable/icon" android:label="@string/app_name">        <activity android:name=".TestActivity"                   android:label="@string/app_name">            <intent-filter>                <action android:name="android.intent.action.MAIN" />                <category android:name="android.intent.category.LAUNCHER" />            </intent-filter>        </activity>    </application>    <uses-permission android:name="android.permission.CAMERA"/>    <uses-feature android:name="android.hardware.camera" />    <uses-feature android:name="android.hardware.camera.autofocus" /></manifest>

TestActivity.java主文件

package com.test;import java.io.IOException;import android.app.Activity;import android.graphics.Bitmap;import android.graphics.BitmapFactory;import android.graphics.PixelFormat;import android.hardware.Camera;import android.hardware.Camera.PictureCallback;import android.hardware.Camera.ShutterCallback;import android.os.Bundle;import android.util.DisplayMetrics;import android.view.SurfaceHolder;import android.view.SurfaceHolder.Callback;import android.view.SurfaceView;import android.view.View;import android.view.View.OnClickListener;import android.view.Window;import android.view.WindowManager;import android.widget.Button;import android.widget.ImageView;public class TestActivity extends Activity implements Callback, OnClickListener {    /** Called when the activity is first created. */    SurfaceView mySurfaceView;// SurfaceView的引用    SurfaceHolder mySurfaceHolder;// SurfaceHolder的引用    Button button1;// 打开按钮    Button button2;// 关闭按钮    Button button3;// 拍照按钮    Camera myCamera;// Camera的引用    boolean isView = false;// 是否在浏览中    @Override    public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);             //设置全屏显示         requestWindowFeature(Window.FEATURE_NO_TITLE);        getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,                WindowManager.LayoutParams.FLAG_FULLSCREEN);        setContentView(R.layout.main);        button1 = (Button) findViewById(R.id.button1);        button2 = (Button) findViewById(R.id.button2);        button3 = (Button) findViewById(R.id.button3);        button1.setOnClickListener(this);        button2.setOnClickListener(this);        button3.setOnClickListener(this);        mySurfaceView = (SurfaceView) findViewById(R.id.mySurfaceView);        mySurfaceHolder = mySurfaceView.getHolder();              //此对象用于在Camera和SurfaceView之间传递数据        mySurfaceHolder.addCallback(this);                                         mySurfaceHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);    }    public void initCamera() {               //初始化相机        if (!isView) {            myCamera = Camera.open();         }        if (myCamera != null && !isView) {            try {                Camera.Parameters myParameters = myCamera.getParameters();                myParameters.setPictureFormat(PixelFormat.JPEG);              //设置照片格式                myParameters.set("orientation", "portrait");//                myParameters.setPreviewSize(dm.widthPixels/2,dm.heightPixels/2);                                //大小                myCamera.setParameters(myParameters);                        myCamera.setPreviewDisplay(mySurfaceHolder);                      myCamera.startPreview();            } catch (IOException e) {                // TODO Auto-generated catch block                e.printStackTrace();            }            isView = true;        }    }    @Override    public void onClick(View v) {        // TODO Auto-generated method stub        if(v==button1){            initCamera();        }else if(v==button2){            isView=false;            myCamera.stopPreview();            myCamera.release();            myCamera=null;        }else if(v==button3){            myCamera.takePicture(mShutterCallback, myRawCallback, myjpegCallback);      //进行照相        }    }    ShutterCallback mShutterCallback = new ShutterCallback() {        @Override        public void onShutter() {            // TODO Auto-generated method stub        }    };    PictureCallback myRawCallback = new PictureCallback() {        @Override        public void onPictureTaken(byte[] data, Camera camera) {            // TODO Auto-generated method stub        }    };    PictureCallback myjpegCallback = new PictureCallback() {        @Override        public void onPictureTaken(byte[] data, Camera camera) {               //将照下来的图片用ImageView显示            // TODO Auto-generated method stub            Bitmap bm=BitmapFactory.decodeByteArray(data, 0, data.length);            ImageView myImageView=(ImageView) findViewById(R.id.myImageView);            myImageView.setImageBitmap(bm);            isView=false;            myCamera.stopPreview();            myCamera.release();            myCamera=null;            initCamera();        }    };    @Override    public void surfaceChanged(SurfaceHolder holder, int format, int width,            int height) {        // TODO Auto-generated method stub    }    @Override    public void surfaceCreated(SurfaceHolder holder) {        // TODO Auto-generated method stub    }    @Override    public void surfaceDestroyed(SurfaceHolder holder) {        // TODO Auto-generated method stub    }}

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