拍照Test
package com;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.PixelFormat;import android.graphics.Bitmap.CompressFormat;import android.hardware.Camera;import android.hardware.Camera.PictureCallback;import android.os.Bundle;import android.view.SurfaceHolder;import android.view.SurfaceView;import android.view.View;import android.view.Window;import android.view.WindowManager;import android.view.View.OnClickListener;import android.widget.Button;import android.widget.ImageView;import com.cgt.camera.R;import com.lilin.util.GetSysDate;import com.lilin.util.SDCardHelp;import com.lilin.util.ShowMsg;/** * * @author lilin * @date 2011-9-3 下午12:22:10 * @ClassName: Main * @Description: TODO */public class TakePhotoView extends Activity implements SurfaceHolder.Callback,OnClickListener, PictureCallback {private SurfaceView surfaceView;private SurfaceHolder surfaceHolder;private Camera camera;// 相机private Camera.Parameters cameraParam;// 相机参数private Camera.Size cameraSize;// 相机大小private boolean isPreViewing = true;private boolean isHasSurface;byte[] data;Button take_btn;// 拍照ImageView preView_iv;// 预览public void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);getWindow().setFormat(PixelFormat.TRANSLUCENT);requestWindowFeature(Window.FEATURE_NO_TITLE);// 无标题getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,WindowManager.LayoutParams.FLAG_FULLSCREEN);// 全屏setContentView(R.layout.takephotoview);initView();}// 界面创建时被调用，一般是用来，打开相机，设置预览public void surfaceCreated(SurfaceHolder holder) {if (camera == null) {camera = Camera.open();// 不能放在构造函数里，否则产生不了预览效果try {camera.setPreviewDisplay(holder);} catch (IOException e) {e.printStackTrace();}isHasSurface = true;}}// 在界面尺寸改变时被调用，设置相机的参数（大小，格式）public void surfaceChanged(SurfaceHolder holder, int format, int w, int h) {if (isPreViewing) {isPreViewing = false;camera.stopPreview();}cameraParam = camera.getParameters();// 这项设置可以解决部分机型报setPreview()的错cameraParam.setPreviewSize(w, h);cameraParam.setPictureFormat(PixelFormat.JPEG);// 图片格式camera.setParameters(cameraParam);// 设置参数if (!isPreViewing) {camera.startPreview();isPreViewing = true;}}// 捕捉相机拍到的图片public void onPictureTaken(byte[] _data, Camera camera) {// 得到图片dataBitmap bitmap = BitmapFactory.decodeByteArray(_data, 0, _data.length);savepicture(bitmap, GetSysDate.getFormateDate(1));// 保存图片if (!isPreViewing) {camera.startPreview();isPreViewing = true;} else {isPreViewing = false;camera.stopPreview();camera.startPreview();// 开始预览isPreViewing = true;}}public void surfaceDestroyed(SurfaceHolder holder) {if (camera != null) {if (isPreViewing) {camera.stopPreview();isPreViewing = false;}camera.release();camera = null;}isHasSurface = false;}// 保存图片public void savepicture(Bitmap bitmap, String formateDate) {try {if (!SDCardHelp.getFileSavePath(getString(R.string.pic_savepath)).toString().equals(null)) {File file = new File(SDCardHelp.getFileSavePath(getString(R.string.pic_savepath)),formateDate + ".jpg");// 创建图片文件FileOutputStream outStream = new FileOutputStream(file);bitmap.compress(CompressFormat.JPEG, 100, outStream);outStream.close();take_btn.setEnabled(true); // 设置拍照按钮可用take_btn.setBackgroundResource(R.drawable.take_picture1);} else {ShowMsg.showToast(getApplicationContext(), "请插入内存卡！");}} catch (Exception e) {e.printStackTrace();}}// 获取最佳预览视图public Camera.Size getBestPreviewSize(Camera.Parameters parameters, int w,int h) {Camera.Size result = null;for (Camera.Size size : parameters.getSupportedPreviewSizes()) {if (size.width <= w && size.height <= h) {if (null == result)result = size;else {int resultDelta = w - result.width + h - result.height;int newDelta = w - size.width + h - size.height;if (newDelta < resultDelta)result = size;}}}return result;}public void onClick(View v) {switch (v.getId()) {case R.id.takepic_btn:// 拍照// 自动对焦camera.takePicture(null, null, this);take_btn.setEnabled(false);take_btn.setBackgroundResource(R.drawable.take_picture2);break;default:break;}}public void initView() {surfaceView = (SurfaceView) findViewById(R.id.surface_camera);take_btn = (Button) findViewById(R.id.takepic_btn);preView_iv = (ImageView) findViewById(R.id.myImageView);take_btn.setOnClickListener(this);}protected void onPause() {System.out.println("onpause");super.onPause();}protected void onResume() {surfaceHolder = surfaceView.getHolder();surfaceHolder.addCallback(this);surfaceHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);super.onResume();}}