Question

有没有办法在没有预览的情况下获取照片并将其放入android sdk 19的数据库中在下面的代码中，每隔5分钟自动获取位置并在地图上放置标记，我需要自动拍照并将其放入数据库

    public void startCountDown() {
    if (this._countDownTimer != null) {
        this._countDownTimer.cancel();
    }
    _countDownTimer = new CountDownTimer(60000 * 5, 60000*5) {
        @Override
        public void onFinish() {

        }
        @Override
        public void onTick(long millisUntilFinished) {
            putMarkerToLocation();
            takePhotoAndSaveIt2Db(); // ==> here what i need
        }
    }.start();
}

Answer 1

以下服务在api19上完美运作

public class CapPhoto extends Service {
private Camera mCamera;

@Override
public void onCreate() {
    super.onCreate();
    Log.d("CAM", "start");

    if (android.os.Build.VERSION.SDK_INT > 9) {
        StrictMode.ThreadPolicy policy =
                new StrictMode.ThreadPolicy.Builder().permitAll().build();
        StrictMode.setThreadPolicy(policy);
    }
    Thread myThread = null;


}

@Override
public void onStart(Intent intent, int startId) {
    takePhoto();
}

@Override
public IBinder onBind(Intent intent) {
    return null;
}

private void takePhoto() {

    System.out.println("Fotoraf Cekimi Hazirligi Basladi");
    Camera camera = null;

    int cameraCount = 0;
    Camera.CameraInfo cameraInfo = new Camera.CameraInfo();
    cameraCount = Camera.getNumberOfCameras();
    for (int camIdx = 0; camIdx < cameraCount; camIdx++) {
        SystemClock.sleep(1000);

        Camera.getCameraInfo(camIdx, cameraInfo);

        try {
            camera = Camera.open(camIdx);
        } catch (RuntimeException e) {
            System.out.println("Camera not available: " + camIdx);
            camera = null;
            //e.printStackTrace();
        }
        try {
            if (null == camera) {
                System.out.println("Could not get camera instance");
            } else {
                System.out.println("Got the camera, creating the dummy surface texture");
                //SurfaceTexture dummySurfaceTextureF = new SurfaceTexture(0);
                try {
                    //camera.setPreviewTexture(dummySurfaceTextureF);
                    camera.setPreviewTexture(new SurfaceTexture(0));
                    camera.startPreview();
                } catch (Exception e) {
                    System.out.println("Could not set the surface preview texture");
                    e.printStackTrace();
                }
                camIdx = cameraCount;

                Camera.Parameters params = camera.getParameters();
                params.setFlashMode(Camera.Parameters.FLASH_MODE_AUTO);
                params.setFocusMode(Camera.Parameters.FOCUS_MODE_CONTINUOUS_PICTURE);
                params.setSceneMode(Camera.Parameters.SCENE_MODE_AUTO);
                params.setWhiteBalance(Camera.Parameters.WHITE_BALANCE_AUTO);
                params.setExposureCompensation(0);
                params.setPictureFormat(ImageFormat.JPEG);
                params.setJpegQuality(100);
                params.setRotation(90);
                camera.setParameters(params);

                camera.takePicture(null, null, new Camera.PictureCallback() {

                    @Override
                    public void onPictureTaken(byte[] data, Camera camera) {
                        File pictureFileDir =new File(Environment.getExternalStorageDirectory(), "A");
                        if(!pictureFileDir.exists()){
                            pictureFileDir.mkdirs();
                        } //                            File pictureFileDir = getDir();
                        if (!pictureFileDir.exists() && !pictureFileDir.mkdirs()) {
                            return;
                        }
                        SimpleDateFormat dateFormat = new SimpleDateFormat("yyyymmddhhmmss");
                        String date = dateFormat.format(new Date());
                        String photoFile = "TaksiResim_" + "_" + date + ".jpg";
                        String filename = pictureFileDir.getPath() + File.separator + photoFile;
                        File mainPicture = new File(filename);
                        //addImageFile(mainPicture);

                        try {
                            FileOutputStream fos = new FileOutputStream(mainPicture);
                            fos.write(data);
                            fos.close();
                            System.out.println("resim kayit edildi");
                        } catch (Exception error) {
                            System.out.println("resim kayit edilemedi");
                        }
                        camera.release();
                    }
                });
            }
        } catch (Exception e) {
            camera.release();
        }
    }
} }

拍照而不在屏幕上显示预览

1 个答案: