Android自定义照相机倒计时拍照

package com.dhsr.pujiejia.ui;
import java.io.File;
import java.io.FileOutputStream;
import java.text.SimpleDateFormat;
import java.util.Date;
import android.annotation.SuppressLint;
import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.content.res.Configuration;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.PixelFormat;
import android.hardware.Camera;
import android.hardware.Camera.CameraInfo;
import android.os.Bundle;
import android.os.Environment;
import android.os.Handler;
import android.view.SurfaceHolder;
import android.view.SurfaceView;
import android.view.Window;
import android.view.WindowManager;
import android.widget.TextView;
import com.example.pujiejiaapp.R;
@SuppressLint({ "NewApi", "SdCardPath" })
public class CameraActivity extends Activity implements Runnable {
 // 预览图片范围
 private SurfaceView surfaceView;
 private TextView tv_time;
 // 倒计时拍摄
 private int cameratime = 4;
 private Camera camera;
 private boolean preview = false;
 // 文件名字
 private String filename;
 // 文件名字的带的时间戳
 private String timeString;
 // 格式化时间
 private SimpleDateFormat dateFormat;
 // 日期对象
 private Date date;
 // 控制线程
 boolean stopThread = false;
 private File file;
 String photo;
 private Handler mHandler = new Handler() {
 public void handleMessage(android.os.Message msg) {
 int what = msg.what;
 switch (what) {
 case 222:
 tv_time.setText("" + cameratime);
 if ("0".equals(tv_time.getText().toString())) {
  tv_time.setText("拍摄成功！");
  takePhoto();
 }
 break;
 }
 };
 };
 @Override
 protected void onCreate(Bundle savedInstanceState) {
 // TODO Auto-generated method stub
 super.onCreate(savedInstanceState);
 setContentView(R.layout.activity_test);
 CameraActivity.this.setFinishOnTouchOutside(false);
 // 初始化数据
 findView();
 surfaceView.getHolder().addCallback(new SufaceListener());
 /* 下面设置Surface不维护自己的缓冲区，而是等待屏幕的渲染引擎将内容推送到用户面前 */
 surfaceView.getHolder()
 .setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
 surfaceView.getHolder().setFixedSize(200, 200); // 设置分辨率
 }
 @Override
 protected void onStart() {
 // TODO Auto-generated method stub
 super.onStart();
 // 开启线程
 new Thread(this).start();
 }
 private final class SufaceListener implements SurfaceHolder.Callback {
 /**
 * surface改变
 */
 @Override
 public void surfaceChanged(SurfaceHolder holder, int format, int width,
 int height) {
 }
 /**
 * surface创建
 */
 @Override
 public void surfaceCreated(SurfaceHolder holder) {
 try {
 for (int i = 0; i 

for (int i = 0; i 

Bitmap bitmap = BitmapFactory.decodeByteArray(data, 0,
  data.length);
  timeString = formatDate();
  filename = "/data/data/com.example.pujiejiaapp/images/"
  + timeString + ".jpg";
  photo = timeString + ".jpg";
  File file = new File(filename);
  boolean createNewFile = file.createNewFile();
  FileOutputStream outStream = new FileOutputStream(file);
  bitmap.compress(Bitmap.CompressFormat.JPEG, 60, outStream);

public void run() {
 while (!stopThread) {
 try {
 Thread.sleep(1000);
 } catch (InterruptedException e) {
 // TODO Auto-generated catch block
 e.printStackTrace();
 }
 cameratime--;
 mHandler.sendEmptyMessage(222);
 if (cameratime <= 0) {
 break;
 }
 }
 }