android 拍照 照相机

package com.cn; import java.io.File; import java.io.FileNotFoundException; import java.io.FileOutputStream; import java.io.IOException; import java.lang.reflect.Method; import java.util.List; import android.app.Activity; import android.content.Context; 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.AutoFocusCallback; //import android.hardware.Camera.CameraInfo; import android.hardware.Camera.Parameters; import android.hardware.Camera.PictureCallback; import android.hardware.Camera.Size; import android.os.Environment; import android.os.Handler; import android.util.Log; import android.view.MotionEvent; import android.view.SurfaceHolder; import android.view.SurfaceView; import android.view.View; import android.view.animation.Animation; import android.view.animation.ScaleAnimation; import android.view.animation.Animation.AnimationListener; import android.widget.ImageView; import android.widget.RelativeLayout; import android.widget.RelativeLayout.LayoutParams; public class CameraCallback implements SurfaceHolder.Callback { private Context mContext; private Camera mCamera; private boolean isShowFrame; private SurfaceHolder mHolder; // 在2.3的Camera.CameraInfo类中 // CAMERA_FACING_BACK常量的值为0,CAMERA_FACING_FRONT为1，我就直接拿出来了， // 如果是实际开发项目的话，建议用反射或者其他方法来获取它的值 private static final int CAMERA_FACING_BACK = 0; private static final int CAMERA_FACING_FRONT = 1; private final int FLASH_MODE_AUTO = 0; private final int FLASH_MODE_ON = 1; private final int FLASH_MODE_OFF = 2; private Parameters mParameters; public CameraCallback(Context context) { this.mContext = context; } @Override public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) { Log.e("tag", " surfaceChanged"); mParameters = mCamera.getParameters(); if (isSupportedFlashMode()) {// 需要判断是否支持闪光灯 mParameters.setFlashMode(Parameters.FLASH_MODE_AUTO); } mParameters.setPictureFormat(PixelFormat.JPEG); Log.e("tag", "parameters.getPictureSize()" + mParameters.getPictureSize().width); setPictureSize(mParameters); // parameters.setPreviewFormat(PixelFormat.JPEG);// Log.i("tag", "holder width:" + width + " height:" + height); // parameters.setPreviewSize(width, height);//需要判断支持的预览 mCamera.setParameters(mParameters); mCamera.startPreview(); } @Override public void surfaceCreated(SurfaceHolder holder) { mHolder = holder; Log.e("tag", " surfaceCreated"); try { if (mCamera == null) { mCamera = Camera.open(); } setDisplayOrientation(mCamera); mCamera.setPreviewDisplay(holder); Log.i("", "mCamera 2"); } catch (IOException e) { if (mCamera != null) { mCamera.stopPreview(); mCamera.release(); mCamera = null; } e.printStackTrace(); } } @Override public void surfaceDestroyed(SurfaceHolder holder) { Log.e("tag", " surfaceDestroyed"); if (mCamera != null) { mCamera.stopPreview(); mCamera.release(); mCamera = null; } } // camera.getNumberOfCameras()方法在2.3以上版本才出现，在2.1版本中需要用到反射调用该方法 public int getNumberOfCameras() { try { Method method = Camera.class.getMethod("getNumberOfCameras", null); if (method != null) { Object object = method.invoke(mCamera, null); if (object != null) { return (Integer) object; } } } catch (Exception e) { e.printStackTrace(); } return 0; } // camera.setDisplayOrientation(degrees)方法在2.2以上版本才出现，在2.1版本中需要用到反射调用该方法 private void setDisplayOrientation(Camera camera) { try { Method method = Camera.class.getMethod("setDisplayOrientation", int.class); if (method != null) { method.invoke(camera, 90); } Log.i("tag", "方法名：" + method.getName()); } catch (Exception e) { e.printStackTrace(); } } // Camera.open(int i)方法在2.3以上版本才出现，在2.1版本中需要用到反射调用该方法 public Camera open(int i) { try { Method method = Camera.class.getMethod("open", int.class); if (method != null) { Object object = method.invoke(mCamera, i); if (object != null) { return (Camera) object; } } } catch (Exception e) { e.printStackTrace(); } return null; } private void setPictureSize(Parameters parameters) { List<Size> sizes = parameters.getSupportedPictureSizes(); if (sizes == null) { return; } int maxSize = 0; int width = 0; int height = 0; for (int i = 0; i < sizes.size(); i++) { Size size = sizes.get(i); int pix = size.width * size.height; if (pix > maxSize) { maxSize = pix; width = size.width; height = size.height; } } Log.i("tag", "图片的大小：" + width + " height:" + height); parameters.setPictureSize(width, height); } public Camera getCamera() { return mCamera; } public void autoFocus(View v, MotionEvent event) { if (isShowFrame) { return; } mCamera.autoFocus(new AutoFocusCallback() { @Override public void onAutoFocus(boolean success, Camera camera) { } }); RelativeLayout layout = (RelativeLayout) v; final ImageView imageView = new ImageView(mContext); Bitmap bitmap = BitmapFactory.decodeResource(mContext.getResources(), R.drawable.lcamera_focus_frame1); imageView.setImageBitmap(bitmap); LayoutParams params = new RelativeLayout.LayoutParams( bitmap.getWidth(), bitmap.getHeight()); // imageView.setLayoutParams(params); Log.e("tag", "bitmap.getWidth:" + bitmap.getWidth()); params.leftMargin = (int) (event.getX() - bitmap.getWidth() / 2); params.topMargin = (int) (event.getY() - bitmap.getHeight() / 2); layout.addView(imageView, params); imageView.setVisibility(View.VISIBLE); ScaleAnimation animation = new ScaleAnimation(1, 0.5f, 1, 0.5f, Animation.RELATIVE_TO_SELF, 0.5f, Animation.RELATIVE_TO_SELF, 0.5f); animation.setDuration(300); animation.setFillAfter(true); animation.setAnimationListener(new AnimationListener() { @Override public void onAnimationStart(Animation animation) { } @Override public void onAnimationRepeat(Animation animation) { } @Override public void onAnimationEnd(final Animation animation) { imageView.setImageResource(R.drawable.lcamera_focus_frame2); new Thread() { public void run() { try { Thread.sleep(400); ((Activity) (mContext)) .runOnUiThread(new Runnable() { @Override public void run() { imageView .setImageResource(R.drawable.lcamera_focus_frame3); } }); Thread.sleep(200); ((Activity) (mContext)) .runOnUiThread(new Runnable() { @Override public void run() { imageView.clearAnimation(); imageView.setVisibility(View.GONE); isShowFrame = false; } }); } catch (InterruptedException e) { e.printStackTrace(); } }; }.start(); } }); imageView.startAnimation(animation); isShowFrame = true; } public void takePicture(final Handler handler) { mCamera.takePicture(null, null, new PictureCallback() { @Override public void onPictureTaken(byte[] data, Camera camera) { FileOutputStream fos = null; try { File directory; if (Environment.getExternalStorageState().equals( Environment.MEDIA_MOUNTED)) { directory = new File(Environment .getExternalStorageDirectory(), "camera"); } else { directory = new File(mContext.getCacheDir(), "camera"); }