毕业设计的项目，基于Android的一个红外防盗报警 需要自己添加蜂鸣器和热释电的硬件访问服务+源代码+文档说明.zip

package bbk.usbcamera; import android.content.Context; import android.util.AttributeSet; import android.util.Log; import android.view.SurfaceHolder; import android.view.SurfaceView; import android.graphics.Bitmap; import android.graphics.Canvas; import android.graphics.Rect; import java.io.File; import java.io.FileNotFoundException; import java.io.FileOutputStream; import java.io.IOException; import java.text.SimpleDateFormat; class CameraPreview extends SurfaceView implements SurfaceHolder.Callback, Runnable { public static volatile boolean exit = true; public volatile boolean destory = false; private static final boolean DEBUG = true; private static final String TAG="hc"; protected Context context; private SurfaceHolder holder; Thread mainLoop = null; private Bitmap bmp=null; private boolean cameraExists=false; private boolean shouldStop=false; // /dev/videox (x=cameraId+cameraBase) is used. // In some omap devices, system uses /dev/video[0-3], // so users must use /dev/video[4-]. // In such a case, try cameraId=0 and cameraBase=4 private int cameraId=4; private int cameraBase=0; // This definition also exists in ImageProc.h. // Webcam must support the resolution 640x480 with YUYV format. static final int IMG_WIDTH=640; static final int IMG_HEIGHT=480; // The following variables are used to draw camera images. private int winWidth=0; private int winHeight=0; private Rect rect; private int dw, dh; private float rate; // JNI functions public native int prepareCamera(int videoid); public native int prepareCameraWithBase(int videoid, int camerabase); public native void processCamera(); public native void stopCamera(); public native void pixeltobmp(Bitmap bitmap); static { try { System.loadLibrary("ImageProc"); }catch (Exception e){ e.printStackTrace(); } } public CameraPreview(Context context) { super(context); this.context = context; if(DEBUG) Log.d(TAG,"CameraPreview constructed"); setFocusable(true); holder = getHolder(); holder.addCallback(this); holder.setType(SurfaceHolder.SURFACE_TYPE_NORMAL); } public CameraPreview(Context context, AttributeSet attrs) { super(context, attrs); this.context = context; if(DEBUG) Log.d(TAG,"CameraPreview constructed"); setFocusable(true); holder = getHolder(); holder.addCallback(this); holder.setType(SurfaceHolder.SURFACE_TYPE_NORMAL); } @Override public void run() { while (true && cameraExists) { //obtaining display area to draw a large image if(winWidth==0){ winWidth=this.getWidth(); winHeight=this.getHeight(); if(winWidth*3/4<=winHeight){ dw = 0; dh = (winHeight-winWidth*3/4)/2; rate = ((float)winWidth)/IMG_WIDTH; rect = new Rect(dw,dh,dw+winWidth-1,dh+winWidth*3/4-1); }else{ dw = (winWidth-winHeight*4/3)/2; dh = 0; rate = ((float)winHeight)/IMG_HEIGHT; rect = new Rect(dw,dh,dw+winHeight*4/3 -1,dh+winHeight-1); } } // obtaining a camera image (pixel data are stored in an array in JNI). processCamera(); // camera image to bmp pixeltobmp(bmp); Canvas canvas = getHolder().lockCanvas(); if (canvas != null) { // draw camera bmp on canvas canvas.drawBitmap(bmp,null,rect,null); getHolder().unlockCanvasAndPost(canvas); } if(shouldStop){ shouldStop = false; break; } } } @Override public void surfaceCreated(SurfaceHolder holder) { if(DEBUG) Log.d(TAG, "surfaceCreated"); if(bmp==null){ bmp = Bitmap.createBitmap(IMG_WIDTH, IMG_HEIGHT, Bitmap.Config.ARGB_8888); } // /dev/videox (x=cameraId + cameraBase) is used int ret = prepareCameraWithBase(cameraId, cameraBase); if(ret!=-1) cameraExists = true; mainLoop = new Thread(this); mainLoop.start(); // in a new thread to save pictures new Thread(new Runnable() { @Override public void run() { while(true) { if (!CameraPreview.exit) { try { Thread.sleep(3000); SimpleDateFormat sDateFormat = new SimpleDateFormat("yyyy-MM-dd-hh:mm:ss"); String date = sDateFormat.format(new java.util.Date()); saveBitmap(bmp, "hc" + date + ".png"); //Log.d(TAG, "生成图片" + "hc" + date + ".png"); } catch (IOException e) { e.printStackTrace(); } catch (Exception e) { e.printStackTrace(); } } if(destory) break; } } }).start(); } @Override public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) { if(DEBUG) Log.d(TAG, "surfaceChanged"); } @Override public void surfaceDestroyed(SurfaceHolder holder) { if(DEBUG) Log.d(TAG, "surfaceDestroyed"); if(cameraExists){ shouldStop = true; CameraPreview.exit = true; destory = true; while(shouldStop){ try{ Thread.sleep(100); // wait for thread stopping }catch(Exception e){ e.printStackTrace(); } } } stopCamera(); } private void saveBitmap(Bitmap bitmap,String bitName) throws IOException { File file = new File("/sdcard/DCIM/Camera/"+bitName); if(file.exists()){ file.delete(); } FileOutputStream out; try{ out = new FileOutputStream(file); if(bitmap.compress(Bitmap.CompressFormat.PNG, 90, out)) { out.flush(); out.close(); } } catch (FileNotFoundException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } } }