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android相机开发之仿米格宝宝日志的相机

功能说明: 因为项目中需要用到多次拍照并保存的功能，模仿了米格宝宝的相机。

效果图:

图在手机上打开是有画面出来，不是截图上的黑屏的。真机测试就可以了。

这个是拍照后的查看图片的。

源码如下:

package com.wjh.camera;
 
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import android.R.integer;
import android.app.Activity;
import android.content.Intent;
import android.content.pm.ActivityInfo;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.PixelFormat;
import android.hardware.Camera;
import android.hardware.Camera.AutoFocusCallback;
import android.hardware.Camera.PictureCallback;
import android.os.Bundle;
import android.view.SurfaceHolder;
import android.view.SurfaceHolder.Callback;
import android.view.KeyEvent;
import android.view.SurfaceView;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.Window;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.RelativeLayout;
 
/**
 * 
 * 相机
 *
 */
public class TakePhotoActivity extends Activity implements Callback, OnClickListener, AutoFocusCallback{
    SurfaceView mySurfaceView;//surfaceView声明  
    SurfaceHolder holder;//surfaceHolder声明  
    Camera myCamera;//相机声明  
    String filePath="/sdcard/";//照片保存路径  
    boolean isClicked = false;//是否点击标识  
    ImageView takeCameraBtn,takephoto_text;
    RelativeLayout re_take_btn,save_btn; //确定
    public static boolean saveFlag = false;// 用于判断是否保存图片的标志
    byte[] imgdata =null;
    public static int imgsize = 0;
    //创建jpeg图片回调数据对象  
    PictureCallback jpeg = new PictureCallback() {  
           
        @Override 
        public void onPictureTaken(byte[] data, Camera camera) {  
            imgdata = data;
           /* try  
            {// 获得图片  
            Bitmap bm = BitmapFactory.decodeByteArray(data, 0, data.length);  
            File file = new File(filePath+"id_"+"1"+".jpg");  
            BufferedOutputStream bos =  
                new BufferedOutputStream(new FileOutputStream(file));  
            bm.compress(Bitmap.CompressFormat.JPEG, 100, bos);//将图片压缩到流中  
            bos.flush();//输出  
            bos.close();//关闭  
            }catch(Exception e)  
            {  
                e.printStackTrace();  
            } */
               
        }  
    };  
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        requestWindowFeature(Window.FEATURE_NO_TITLE);//无标题             
        //设置拍摄方向  
        this.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);  
        setContentView(R.layout.take_photo);  
        takeCameraBtn = (ImageView)this.findViewById(R.id.photo_icon); //拍照
        takephoto_text = (ImageView)this.findViewById(R.id.takephoto_text);//照片预览
        takeCameraBtn.setOnClickListener(this);
        re_take_btn = (RelativeLayout)this.findViewById(R.id.re_take_btn);//取消
        save_btn = (RelativeLayout)this.findViewById(R.id.save_btn); //保存
        re_take_btn.setOnClickListener(this);
        save_btn.setOnClickListener(this);
        //获得控件  
        mySurfaceView = (SurfaceView)findViewById(R.id.surfaceView1);  
        //获得句柄  
        holder = mySurfaceView.getHolder();  
        //添加回调  
        holder.addCallback(this);  
        //设置类型  
        holder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);  
        //设置监听  
        mySurfaceView.setOnClickListener(this); 
         
    }
 
    @Override
    public void onAutoFocus(boolean success, Camera camera) {
        if(success)  
        {  
            //设置参数,并拍照  
            Camera.Parameters params = myCamera.getParameters();  
            params.setPictureFormat(PixelFormat.JPEG);  
            params.setPreviewSize(640,480);  
            myCamera.setParameters(params);  
            myCamera.takePicture(null, null, jpeg);
            takeCameraBtn.setVisibility(View.INVISIBLE);
             takephoto_text.setVisibility(View.VISIBLE);
             re_take_btn.setVisibility(View.VISIBLE);
             save_btn.setVisibility(View.VISIBLE);
        }  
         
    }
 
    @Override
    public void onClick(View v) {
        switch (v.getId()) {
        case R.id.photo_icon: //拍照
             myCamera.autoFocus(this);//自动对焦
             
            break;
        case R.id.re_take_btn://取消
            saveFlag = false;
             myCamera.startPreview();//开启预览  
             takeCameraBtn.setVisibility(View.VISIBLE);
             takephoto_text.setVisibility(View.INVISIBLE);
             re_take_btn.setVisibility(View.INVISIBLE);
             save_btn.setVisibility(View.INVISIBLE);
            break;
        case R.id.save_btn://保存
            saveFlag = true;
            savephoto();
             myCamera.startPreview();//开启预览  
             takeCameraBtn.setVisibility(View.VISIBLE);
             takephoto_text.setVisibility(View.INVISIBLE);
             re_take_btn.setVisibility(View.INVISIBLE);
             save_btn.setVisibility(View.INVISIBLE);
        default:
            break;
        }
         
    }
 
    @Override
    public void surfaceChanged(SurfaceHolder holder, int format, int width,
            int height) {
         //设置参数并开始预览  
        Camera.Parameters params = myCamera.getParameters();  
        params.setPictureFormat(PixelFormat.JPEG);  
        params.setPreviewSize(640,480);  
        myCamera.setParameters(params);  
        myCamera.startPreview(); 
         
    }
 
    @Override
    public void surfaceCreated(SurfaceHolder holder) {
         //开启相机  
        if(myCamera == null)  
        {  
            myCamera = Camera.open();  
            try {  
                myCamera.setPreviewDisplay(holder);  
            } catch (IOException e) {  
                // TODO Auto-generated catch block  
                e.printStackTrace();  
            }  
        }  
         
    }
 
    @Override
    public void surfaceDestroyed(SurfaceHolder holder) {
         //关闭预览并释放资源  
        myCamera.stopPreview();  
        myCamera.release();  
        myCamera = null;  
         
    }
     
 
    public void savephoto(){
        if(saveFlag){
            if(imgdata!=null){
                ++imgsize;
                 try 
                    {// 获得图片  
                    Bitmap bm = BitmapFactory.decodeByteArray(imgdata, 0, imgdata.length);  
                    File file = new File(filePath+"id_"+imgsize+".jpg");  
                    BufferedOutputStream bos =  
                        new BufferedOutputStream(new FileOutputStream(file));  
                    bm.compress(Bitmap.CompressFormat.JPEG, 100, bos);//将图片压缩到流中  
                    bos.flush();//输出  
                    bos.close();//关闭  
                    }catch(Exception e)  
                    {  
                        e.printStackTrace();  
                    }
            }
        }else {
            imgdata = null;
        }
    }
 
    //按返回键时，显示弹出框
    @Override
    public boolean onKeyDown(int keyCode, KeyEvent event) {  
        if (keyCode == KeyEvent.KEYCODE_BACK && event.getRepeatCount() == 0) {  
            Intent intent = new Intent(TakePhotoActivity.this,AsyncLoadedImageActivity.class);
            startActivity(intent);
            finish();
            return true; 
        } 
        return false;
    }
 
     
}

　　take_photo.xml

<?xml version="1.0" encoding="UTF-8"?>
<RelativeLayout android:id="@+id/surface_view_wrapper" android:layout_width="fill_parent" android:layout_height="fill_parent"
  xmlns:android="http://schemas.android.com/apk/res/android">
    <RelativeLayout android:layout_width="fill_parent" android:layout_height="fill_parent">
        <SurfaceView android:id="@+id/surfaceView1" android:layout_width="fill_parent" android:layout_height="fill_parent" android:layout_centerInParent="true" />
        <ImageView android:id="@+id/focus_rectangle" android:background="@null" android:layout_width="200.0dip" android:layout_height="200.0dip" android:layout_centerInParent="true" /> 
    </RelativeLayout>
    <RelativeLayout android:id="@+id/flash_btn" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginLeft="10.0dip" android:layout_marginBottom="10.0dip" android:layout_alignParentLeft="true" android:layout_alignParentBottom="true">
        <ImageView android:layout_width="wrap_content" android:layout_height="wrap_content" android:src="@drawable/takephoto_tab1" android:layout_centerInParent="true" />
        <ImageView android:id="@+id/flash_icon" android:layout_width="21.0dip" android:layout_height="21.0dip" android:src="@drawable/ic_viewfinder_flash_off" android:layout_centerInParent="true" />
    </RelativeLayout>
    <RelativeLayout android:id="@+id/foot_menu" android:background="@drawable/takephoto_bar_hor" android:layout_width="60.0dip" android:layout_height="fill_parent" android:layout_alignParentRight="true">
        <RelativeLayout android:id="@+id/take_btn" android:background="@drawable/takephoto_1_bg_hor" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginRight="5.0dip" android:layout_alignBottom="@id/surfaceView1" android:layout_alignParentRight="true" android:layout_centerInParent="true">
            <ImageView android:layout_gravity="center" android:id="@+id/photo_icon" android:src="@drawable/takephoto_1_camera" android:layout_centerInParent="true" style="@style/photo_foot_menu_image_button_port" />
        </RelativeLayout>
        <ImageView android:layout_gravity="center" android:id="@+id/takephoto_text" android:paddingLeft="8.0dip" android:visibility="invisible" android:layout_width="wrap_content" android:layout_height="wrap_content" android:src="@drawable/takephoto_2_txt" android:layout_centerInParent="true" />
        <RelativeLayout android:id="@+id/re_take_btn" android:visibility="invisible" android:layout_width="wrap_content" android:layout_marginBottom="10.0dip" android:layout_alignParentBottom="true" style="@style/photo_foot_menu_image_button_wrapper">
            <ImageView android:src="@drawable/icon_takephoto_cancel" style="@style/photo_foot_menu_image_button_port" />
        </RelativeLayout>
        <RelativeLayout android:id="@+id/save_btn" android:visibility="invisible" android:layout_marginTop="5.0dip" style="@style/photo_foot_menu_image_button_wrapper">
            <ImageView android:id="@+id/save_photo_icon" android:src="@drawable/icon_takephoto_save" style="@style/photo_foot_menu_image_button_port" />
        </RelativeLayout>
    </RelativeLayout>
</RelativeLayout>

源码下载