2013新春奉送:Android摄像头开发完美demo---(循环聚焦,缩放大小,旋转picture,查询支持的picturesize, ImageButton按键效果)
【后注:】下载代码的注意,我的手机是4.3寸的屏,华为U9200.如果不能运行的请修改参数。看本篇的第四条。Y的,省的说我传的代码不能用
除夕之夜,程序员还在编代码。http://blog.csdn.net/yanzi1225627/article/details/7926994这是我几个月前写的代码,现在看来真是垃圾不堪阿。变量名字不规范,整个架构拉杂,几乎没有注释,程序不稳键,没有安全退出,导致摄像头下次不可用。
这个代码几乎涉及到了摄像头开发的所有方面,(除了PreviewCallback,这块东西我会结合android摄像头自动识别人脸/火灾来谈),且力求精简,是杂家的心血阿!相对之前改进之处有:
1,精简。只有一个ImageButton用来实现按下拍照。拍照后自动保存,进入预览界面。 不像原来的要三个按键:预览/拍照/保存。
2,聚焦方面实现不间断循环聚焦。 不像之前的,要按一下按键聚焦一次。
3,ImageButton增加了按下的效果。按之前示例如下:,点击后背景变暗,有种风车旋转的感觉。
4,增加了查询摄像头PictureSizes和PreviewSize的代码,调试程序时应先查询出自己的参数然后配置。不同的手机参数不同。另外,预览surfaceView的高我设为800px,如果手机屏幕太小,这个参数要改。
5,改进了之前的按back返回按键退出程序后,再次进入程序camera没有释放,致使程序挂掉的问题。
6,改进了预览时手机横竖屏切换时,程序挂掉的毛病。但这里的布局还是采用默认的竖屏。
7,在实现循环聚焦的同时,保留了autoFocus()接口。可以测试出,在使用FOCUS_MODE_CONTINUOUS_VIDEO聚焦模式下,autoFocus不发挥作用。
8,注释更加良好。
废话不说了请看源码:
第一部分:Manifinest.xml
- <manifest xmlns:android="http://schemas.android.com/apk/res/android"
- package="yan.guoqi.rectphoto"
- android:versionCode="1"
- android:versionName="1.0" >
- <uses-sdk
- android:minSdkVersion="8"
- android:targetSdkVersion="15" />
- <!-- 增加文件存储和访问摄像头的权限 -->
- <uses-permission android:name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS" />
- <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
- <uses-permission android:name="android.permission.CAMERA" />
- <uses-feature android:name="android.hardware.camera" />
- <application
- android:icon="@drawable/ic_launcher"
- android:label="@string/app_name"
- android:theme="@style/AppTheme" >
- <activity
- android:name=".RectPhoto"
- android:label="@string/title_activity_rect_photo" >
- <intent-filter>
- <action android:name="android.intent.action.MAIN" />
- <category android:name="android.intent.category.LAUNCHER" />
- </intent-filter>
- </activity>
- </application>
- </manifest>
<manifest xmlns:android="http://schemas.android.com/apk/res/android" package="yan.guoqi.rectphoto" android:versionCode="1" android:versionName="1.0" > <uses-sdk android:minSdkVersion="8" android:targetSdkVersion="15" /> <!-- 增加文件存储和访问摄像头的权限 --> <uses-permission android:name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS" /> <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" /> <uses-permission android:name="android.permission.CAMERA" /> <uses-feature android:name="android.hardware.camera" /> <application android:icon="@drawable/ic_launcher" android:label="@string/app_name" android:theme="@style/AppTheme" > <activity android:name=".RectPhoto" android:label="@string/title_activity_rect_photo" > <intent-filter> <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> </intent-filter> </activity> </application> </manifest>
第二部分:布局文件
- <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
- xmlns:tools="http://schemas.android.com/tools"
- android:layout_width="fill_parent"
- android:layout_height="fill_parent"
- android:orientation="vertical" >
- <TextView
- android:layout_width="wrap_content"
- android:layout_height="wrap_content"
- android:text="@string/BestWish"
- tools:context=".RectPhoto" />
- <FrameLayout
- android:layout_width="wrap_content"
- android:layout_height="wrap_content" >
- <SurfaceView
- android:id="@+id/previewSV"
- android:layout_width="fill_parent"
- android:layout_height="800px" />
- </FrameLayout>
- <ImageButton
- android:id="@+id/photoImgBtn"
- android:layout_width="wrap_content"
- android:layout_height="wrap_content"
- android:background="@drawable/photo_img_btn"
- android:layout_gravity="center" />
- </LinearLayout>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="fill_parent" android:layout_height="fill_parent" android:orientation="vertical" > <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@string/BestWish" tools:context=".RectPhoto" /> <FrameLayout android:layout_width="wrap_content" android:layout_height="wrap_content" > <SurfaceView android:id="@+id/previewSV" android:layout_width="fill_parent" android:layout_height="800px" /> </FrameLayout> <ImageButton android:id="@+id/photoImgBtn" android:layout_width="wrap_content" android:layout_height="wrap_content" android:background="@drawable/photo_img_btn" android:layout_gravity="center" /> </LinearLayout>
第三部分:RectPhoto.java主程序
- package yan.guoqi.rectphoto;
- import java.io.BufferedOutputStream;
- import java.io.File;
- import java.io.FileOutputStream;
- import java.io.IOException;
- import android.app.Activity;
- import android.graphics.Bitmap;
- import android.graphics.BitmapFactory;
- import android.graphics.ColorMatrixColorFilter;
- import android.graphics.Matrix;
- import android.graphics.PixelFormat;
- import android.hardware.Camera;
- import android.hardware.Camera.AutoFocusCallback;
- import android.hardware.Camera.PictureCallback;
- import android.hardware.Camera.ShutterCallback;
- import android.os.Bundle;
- import android.util.Log;
- import android.view.MotionEvent;
- import android.view.SurfaceHolder;
- import android.view.SurfaceView;
- import android.view.View;
- import android.view.View.OnClickListener;
- import android.view.View.OnTouchListener;
- import android.view.ViewGroup.LayoutParams;
- import android.view.Window;
- import android.view.WindowManager;
- import android.widget.ImageButton;
- public class RectPhoto extends Activity implements SurfaceHolder.Callback{
- private static final String tag="yan";
- private boolean isPreview = false;
- private SurfaceView mPreviewSV = null; //预览SurfaceView
- private SurfaceHolder mySurfaceHolder = null;
- private ImageButton mPhotoImgBtn = null;
- private Camera myCamera = null;
- private Bitmap mBitmap = null;
- private AutoFocusCallback myAutoFocusCallback = null;
- @Override
- public void onCreate(Bundle savedInstanceState) {
- super.onCreate(savedInstanceState);
- //设置全屏无标题
- requestWindowFeature(Window.FEATURE_NO_TITLE);
- int flag = WindowManager.LayoutParams.FLAG_FULLSCREEN;
- Window myWindow = this.getWindow();
- myWindow.setFlags(flag, flag);
- setContentView(R.layout.activity_rect_photo);
- //初始化SurfaceView
- mPreviewSV = (SurfaceView)findViewById(R.id.previewSV);
- mySurfaceHolder = mPreviewSV.getHolder();
- mySurfaceHolder.setFormat(PixelFormat.TRANSLUCENT);//translucent半透明 transparent透明
- mySurfaceHolder.addCallback(this);
- mySurfaceHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
- //自动聚焦变量回调
- myAutoFocusCallback = new AutoFocusCallback() {
- public void onAutoFocus(boolean success, Camera camera) {
- // TODO Auto-generated method stub
- if(success)//success表示对焦成功
- {
- Log.i(tag, "myAutoFocusCallback: success...");
- //myCamera.setOneShotPreviewCallback(null);
- }
- else
- {
- //未对焦成功
- Log.i(tag, "myAutoFocusCallback: 失败了...");
- }
- }
- };
- mPhotoImgBtn = (ImageButton)findViewById(R.id.photoImgBtn);
- //手动设置拍照ImageButton的大小为120×120,原图片大小是64×64
- LayoutParams lp = mPhotoImgBtn.getLayoutParams();
- lp.width = 120;
- lp.height = 120;
- mPhotoImgBtn.setLayoutParams(lp);
- mPhotoImgBtn.setOnClickListener(new PhotoOnClickListener());
- mPhotoImgBtn.setOnTouchListener(new MyOnTouchListener());
- }
- /*下面三个是SurfaceHolder.Callback创建的回调函数*/
- public void surfaceChanged(SurfaceHolder holder, int format, int width,int height)
- // 当SurfaceView/预览界面的格式和大小发生改变时,该方法被调用
- {
- // TODO Auto-generated method stub
- Log.i(tag, "SurfaceHolder.Callback:surfaceChanged!");
- initCamera();
- }
- public void surfaceCreated(SurfaceHolder holder)
- // SurfaceView启动时/初次实例化,预览界面被创建时,该方法被调用。
- {
- // TODO Auto-generated method stub
- myCamera = Camera.open();
- try {
- myCamera.setPreviewDisplay(mySurfaceHolder);
- Log.i(tag, "SurfaceHolder.Callback: surfaceCreated!");
- } catch (IOException e) {
- // TODO Auto-generated catch block
- if(null != myCamera){
- myCamera.release();
- myCamera = null;
- }
- e.printStackTrace();
- }
- }
- public void surfaceDestroyed(SurfaceHolder holder)
- //销毁时被调用
- {
- // TODO Auto-generated method stub
- Log.i(tag, "SurfaceHolder.Callback:Surface Destroyed");
- if(null != myCamera)
- {
- myCamera.setPreviewCallback(null); /*在启动PreviewCallback时这个必须在前不然退出出错。
- 这里实际上注释掉也没关系*/
- myCamera.stopPreview();
- isPreview = false;
- myCamera.release();
- myCamera = null;
- }
- }
- //初始化相机
- public void initCamera(){
- if(isPreview){
- myCamera.stopPreview();
- }
- if(null != myCamera){
- Camera.Parameters myParam = myCamera.getParameters();
- // //查询屏幕的宽和高
- // WindowManager wm = (WindowManager)getSystemService(Context.WINDOW_SERVICE);
- // Display display = wm.getDefaultDisplay();
- // Log.i(tag, "屏幕宽度:"+display.getWidth()+" 屏幕高度:"+display.getHeight());
- myParam.setPictureFormat(PixelFormat.JPEG);//设置拍照后存储的图片格式
- // //查询camera支持的picturesize和previewsize
- // List<Size> pictureSizes = myParam.getSupportedPictureSizes();
- // List<Size> previewSizes = myParam.getSupportedPreviewSizes();
- // for(int i=0; i<pictureSizes.size(); i++){
- // Size size = pictureSizes.get(i);
- // Log.i(tag, "initCamera:摄像头支持的pictureSizes: width = "+size.width+"height = "+size.height);
- // }
- // for(int i=0; i<previewSizes.size(); i++){
- // Size size = previewSizes.get(i);
- // Log.i(tag, "initCamera:摄像头支持的previewSizes: width = "+size.width+"height = "+size.height);
- //
- // }
- //设置大小和方向等参数
- myParam.setPictureSize(1280, 960);
- myParam.setPreviewSize(960, 720);
- //myParam.set("rotation", 90);
- myCamera.setDisplayOrientation(90);
- myParam.setFocusMode(Camera.Parameters.FOCUS_MODE_CONTINUOUS_VIDEO);
- myCamera.setParameters(myParam);
- myCamera.startPreview();
- myCamera.autoFocus(myAutoFocusCallback);
- isPreview = true;
- }
- }
- /*为了实现拍照的快门声音及拍照保存照片需要下面三个回调变量*/
- ShutterCallback myShutterCallback = new ShutterCallback()
- //快门按下的回调,在这里我们可以设置类似播放“咔嚓”声之类的操作。默认的就是咔嚓。
- {
- public void onShutter() {
- // TODO Auto-generated method stub
- Log.i(tag, "myShutterCallback:onShutter...");
- }
- };
- PictureCallback myRawCallback = new PictureCallback()
- // 拍摄的未压缩原数据的回调,可以为null
- {
- public void onPictureTaken(byte[] data, Camera camera) {
- // TODO Auto-generated method stub
- Log.i(tag, "myRawCallback:onPictureTaken...");
- }
- };
- PictureCallback myJpegCallback = new PictureCallback()
- //对jpeg图像数据的回调,最重要的一个回调
- {
- public void onPictureTaken(byte[] data, Camera camera) {
- // TODO Auto-generated method stub
- Log.i(tag, "myJpegCallback:onPictureTaken...");
- if(null != data){
- mBitmap = BitmapFactory.decodeByteArray(data, 0, data.length);//data是字节数据,将其解析成位图
- myCamera.stopPreview();
- isPreview = false;
- }
- //设置FOCUS_MODE_CONTINUOUS_VIDEO)之后,myParam.set("rotation", 90)失效。图片竟然不能旋转了,故这里要旋转下
- Matrix matrix = new Matrix();
- matrix.postRotate((float)90.0);
- Bitmap rotaBitmap = Bitmap.createBitmap(mBitmap, 0, 0, mBitmap.getWidth(), mBitmap.getHeight(), matrix, false);
- //保存图片到sdcard
- if(null != rotaBitmap)
- {
- saveJpeg(rotaBitmap);
- }
- //再次进入预览
- myCamera.startPreview();
- isPreview = true;
- }
- };
- //拍照按键的监听
- public class PhotoOnClickListener implements OnClickListener{
- public void onClick(View v) {
- // TODO Auto-generated method stub
- if(isPreview && myCamera!=null){
- myCamera.takePicture(myShutterCallback, null, myJpegCallback);
- }
- }
- }
- /*给定一个Bitmap,进行保存*/
- public void saveJpeg(Bitmap bm){
- String savePath = "/mnt/sdcard/rectPhoto/";
- File folder = new File(savePath);
- if(!folder.exists()) //如果文件夹不存在则创建
- {
- folder.mkdir();
- }
- long dataTake = System.currentTimeMillis();
- String jpegName = savePath + dataTake +".jpg";
- Log.i(tag, "saveJpeg:jpegName--" + jpegName);
- //File jpegFile = new File(jpegName);
- try {
- FileOutputStream fout = new FileOutputStream(jpegName);
- BufferedOutputStream bos = new BufferedOutputStream(fout);
- // //如果需要改变大小(默认的是宽960×高1280),如改成宽600×高800
- // Bitmap newBM = bm.createScaledBitmap(bm, 600, 800, false);
- bm.compress(Bitmap.CompressFormat.JPEG, 100, bos);
- bos.flush();
- bos.close();
- Log.i(tag, "saveJpeg:存储完毕!");
- } catch (IOException e) {
- // TODO Auto-generated catch block
- Log.i(tag, "saveJpeg:存储失败!");
- e.printStackTrace();
- }
- }
- /*为了使图片按钮按下和弹起状态不同,采用过滤颜色的方法.按下的时候让图片颜色变淡*/
- public class MyOnTouchListener implements OnTouchListener{
- public final float[] BT_SELECTED=new float[]
- { 2, 0, 0, 0, 2,
- 0, 2, 0, 0, 2,
- 0, 0, 2, 0, 2,
- 0, 0, 0, 1, 0 };
- public final float[] BT_NOT_SELECTED=new float[]
- { 1, 0, 0, 0, 0,
- 0, 1, 0, 0, 0,
- 0, 0, 1, 0, 0,
- 0, 0, 0, 1, 0 };
- public boolean onTouch(View v, MotionEvent event) {
- // TODO Auto-generated method stub
- if(event.getAction() == MotionEvent.ACTION_DOWN){
- v.getBackground().setColorFilter(new ColorMatrixColorFilter(BT_SELECTED));
- v.setBackgroundDrawable(v.getBackground());
- }
- else if(event.getAction() == MotionEvent.ACTION_UP){
- v.getBackground().setColorFilter(new ColorMatrixColorFilter(BT_NOT_SELECTED));
- v.setBackgroundDrawable(v.getBackground());
- }
- return false;
- }
- }
- @Override
- public void onBackPressed()
- //无意中按返回键时要释放内存
- {
- // TODO Auto-generated method stub
- super.onBackPressed();
- RectPhoto.this.finish();
- }
- }
package yan.guoqi.rectphoto; import java.io.BufferedOutputStream; import java.io.File; import java.io.FileOutputStream; import java.io.IOException; import android.app.Activity; import android.graphics.Bitmap; import android.graphics.BitmapFactory; import android.graphics.ColorMatrixColorFilter; import android.graphics.Matrix; import android.graphics.PixelFormat; import android.hardware.Camera; import android.hardware.Camera.AutoFocusCallback; import android.hardware.Camera.PictureCallback; import android.hardware.Camera.ShutterCallback; import android.os.Bundle; import android.util.Log; import android.view.MotionEvent; import android.view.SurfaceHolder; import android.view.SurfaceView; import android.view.View; import android.view.View.OnClickListener; import android.view.View.OnTouchListener; import android.view.ViewGroup.LayoutParams; import android.view.Window; import android.view.WindowManager; import android.widget.ImageButton; public class RectPhoto extends Activity implements SurfaceHolder.Callback{ private static final String tag="yan"; private boolean isPreview = false; private SurfaceView mPreviewSV = null; //预览SurfaceView private SurfaceHolder mySurfaceHolder = null; private ImageButton mPhotoImgBtn = null; private Camera myCamera = null; private Bitmap mBitmap = null; private AutoFocusCallback myAutoFocusCallback = null; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); //设置全屏无标题 requestWindowFeature(Window.FEATURE_NO_TITLE); int flag = WindowManager.LayoutParams.FLAG_FULLSCREEN; Window myWindow = this.getWindow(); myWindow.setFlags(flag, flag); setContentView(R.layout.activity_rect_photo); //初始化SurfaceView mPreviewSV = (SurfaceView)findViewById(R.id.previewSV); mySurfaceHolder = mPreviewSV.getHolder(); mySurfaceHolder.setFormat(PixelFormat.TRANSLUCENT);//translucent半透明 transparent透明 mySurfaceHolder.addCallback(this); mySurfaceHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS); //自动聚焦变量回调 myAutoFocusCallback = new AutoFocusCallback() { public void onAutoFocus(boolean success, Camera camera) { // TODO Auto-generated method stub if(success)//success表示对焦成功 { Log.i(tag, "myAutoFocusCallback: success..."); //myCamera.setOneShotPreviewCallback(null); } else { //未对焦成功 Log.i(tag, "myAutoFocusCallback: 失败了..."); } } }; mPhotoImgBtn = (ImageButton)findViewById(R.id.photoImgBtn); //手动设置拍照ImageButton的大小为120×120,原图片大小是64×64 LayoutParams lp = mPhotoImgBtn.getLayoutParams(); lp.width = 120; lp.height = 120; mPhotoImgBtn.setLayoutParams(lp); mPhotoImgBtn.setOnClickListener(new PhotoOnClickListener()); mPhotoImgBtn.setOnTouchListener(new MyOnTouchListener()); } /*下面三个是SurfaceHolder.Callback创建的回调函数*/ public void surfaceChanged(SurfaceHolder holder, int format, int width,int height) // 当SurfaceView/预览界面的格式和大小发生改变时,该方法被调用 { // TODO Auto-generated method stub Log.i(tag, "SurfaceHolder.Callback:surfaceChanged!"); initCamera(); } public void surfaceCreated(SurfaceHolder holder) // SurfaceView启动时/初次实例化,预览界面被创建时,该方法被调用。 { // TODO Auto-generated method stub myCamera = Camera.open(); try { myCamera.setPreviewDisplay(mySurfaceHolder); Log.i(tag, "SurfaceHolder.Callback: surfaceCreated!"); } catch (IOException e) { // TODO Auto-generated catch block if(null != myCamera){ myCamera.release(); myCamera = null; } e.printStackTrace(); } } public void surfaceDestroyed(SurfaceHolder holder) //销毁时被调用 { // TODO Auto-generated method stub Log.i(tag, "SurfaceHolder.Callback:Surface Destroyed"); if(null != myCamera) { myCamera.setPreviewCallback(null); /*在启动PreviewCallback时这个必须在前不然退出出错。 这里实际上注释掉也没关系*/ myCamera.stopPreview(); isPreview = false; myCamera.release(); myCamera = null; } } //初始化相机 public void initCamera(){ if(isPreview){ myCamera.stopPreview(); } if(null != myCamera){ Camera.Parameters myParam = myCamera.getParameters(); // //查询屏幕的宽和高 // WindowManager wm = (WindowManager)getSystemService(Context.WINDOW_SERVICE); // Display display = wm.getDefaultDisplay(); // Log.i(tag, "屏幕宽度:"+display.getWidth()+" 屏幕高度:"+display.getHeight()); myParam.setPictureFormat(PixelFormat.JPEG);//设置拍照后存储的图片格式 // //查询camera支持的picturesize和previewsize // List<Size> pictureSizes = myParam.getSupportedPictureSizes(); // List<Size> previewSizes = myParam.getSupportedPreviewSizes(); // for(int i=0; i<pictureSizes.size(); i++){ // Size size = pictureSizes.get(i); // Log.i(tag, "initCamera:摄像头支持的pictureSizes: width = "+size.width+"height = "+size.height); // } // for(int i=0; i<previewSizes.size(); i++){ // Size size = previewSizes.get(i); // Log.i(tag, "initCamera:摄像头支持的previewSizes: width = "+size.width+"height = "+size.height); // // } //设置大小和方向等参数 myParam.setPictureSize(1280, 960); myParam.setPreviewSize(960, 720); //myParam.set("rotation", 90); myCamera.setDisplayOrientation(90); myParam.setFocusMode(Camera.Parameters.FOCUS_MODE_CONTINUOUS_VIDEO); myCamera.setParameters(myParam); myCamera.startPreview(); myCamera.autoFocus(myAutoFocusCallback); isPreview = true; } } /*为了实现拍照的快门声音及拍照保存照片需要下面三个回调变量*/ ShutterCallback myShutterCallback = new ShutterCallback() //快门按下的回调,在这里我们可以设置类似播放“咔嚓”声之类的操作。默认的就是咔嚓。 { public void onShutter() { // TODO Auto-generated method stub Log.i(tag, "myShutterCallback:onShutter..."); } }; PictureCallback myRawCallback = new PictureCallback() // 拍摄的未压缩原数据的回调,可以为null { public void onPictureTaken(byte[] data, Camera camera) { // TODO Auto-generated method stub Log.i(tag, "myRawCallback:onPictureTaken..."); } }; PictureCallback myJpegCallback = new PictureCallback() //对jpeg图像数据的回调,最重要的一个回调 { public void onPictureTaken(byte[] data, Camera camera) { // TODO Auto-generated method stub Log.i(tag, "myJpegCallback:onPictureTaken..."); if(null != data){ mBitmap = BitmapFactory.decodeByteArray(data, 0, data.length);//data是字节数据,将其解析成位图 myCamera.stopPreview(); isPreview = false; } //设置FOCUS_MODE_CONTINUOUS_VIDEO)之后,myParam.set("rotation", 90)失效。图片竟然不能旋转了,故这里要旋转下 Matrix matrix = new Matrix(); matrix.postRotate((float)90.0); Bitmap rotaBitmap = Bitmap.createBitmap(mBitmap, 0, 0, mBitmap.getWidth(), mBitmap.getHeight(), matrix, false); //保存图片到sdcard if(null != rotaBitmap) { saveJpeg(rotaBitmap); } //再次进入预览 myCamera.startPreview(); isPreview = true; } }; //拍照按键的监听 public class PhotoOnClickListener implements OnClickListener{ public void onClick(View v) { // TODO Auto-generated method stub if(isPreview && myCamera!=null){ myCamera.takePicture(myShutterCallback, null, myJpegCallback); } } } /*给定一个Bitmap,进行保存*/ public void saveJpeg(Bitmap bm){ String savePath = "/mnt/sdcard/rectPhoto/"; File folder = new File(savePath); if(!folder.exists()) //如果文件夹不存在则创建 { folder.mkdir(); } long dataTake = System.currentTimeMillis(); String jpegName = savePath + dataTake +".jpg"; Log.i(tag, "saveJpeg:jpegName--" + jpegName); //File jpegFile = new File(jpegName); try { FileOutputStream fout = new FileOutputStream(jpegName); BufferedOutputStream bos = new BufferedOutputStream(fout); // //如果需要改变大小(默认的是宽960×高1280),如改成宽600×高800 // Bitmap newBM = bm.createScaledBitmap(bm, 600, 800, false); bm.compress(Bitmap.CompressFormat.JPEG, 100, bos); bos.flush(); bos.close(); Log.i(tag, "saveJpeg:存储完毕!"); } catch (IOException e) { // TODO Auto-generated catch block Log.i(tag, "saveJpeg:存储失败!"); e.printStackTrace(); } } /*为了使图片按钮按下和弹起状态不同,采用过滤颜色的方法.按下的时候让图片颜色变淡*/ public class MyOnTouchListener implements OnTouchListener{ public final float[] BT_SELECTED=new float[] { 2, 0, 0, 0, 2, 0, 2, 0, 0, 2, 0, 0, 2, 0, 2, 0, 0, 0, 1, 0 }; public final float[] BT_NOT_SELECTED=new float[] { 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0 }; public boolean onTouch(View v, MotionEvent event) { // TODO Auto-generated method stub if(event.getAction() == MotionEvent.ACTION_DOWN){ v.getBackground().setColorFilter(new ColorMatrixColorFilter(BT_SELECTED)); v.setBackgroundDrawable(v.getBackground()); } else if(event.getAction() == MotionEvent.ACTION_UP){ v.getBackground().setColorFilter(new ColorMatrixColorFilter(BT_NOT_SELECTED)); v.setBackgroundDrawable(v.getBackground()); } return false; } } @Override public void onBackPressed() //无意中按返回键时要释放内存 { // TODO Auto-generated method stub super.onBackPressed(); RectPhoto.this.finish(); } }
源码下载链接: http://download.csdn.net/detail/yanzi1225627/5060323
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注:代码不能正常运行的请看上面第4条,修改相关参数。
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【后注:】下载代码的注意,我的手机是4.3寸的屏,华为U9200.如果不能运行的请修改参数。看本篇的第四条。Y的,省的说我传的代码不能用