Example usage for android.hardware Camera startPreview

Introduction

In this page you can find the example usage for android.hardware Camera startPreview.

Prototype

public native final void startPreview();

Source Link

Document

Starts capturing and drawing preview frames to the screen.

Usage

From source file:Main.java

public static void open(Context context) {
    Camera cam = Camera.open();
    Camera.Parameters p = cam.getParameters();
    p.setFlashMode(Camera.Parameters.FLASH_MODE_TORCH);
    cam.setParameters(p);/*from  w w w  . j av a 2 s  .c  om*/
    cam.startPreview();

}

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From source file:Main.java

public static Camera openFlightLight() {
    try {// ww w  .  java  2s  .co  m
        Camera camera = Camera.open();
        if (null != camera) {
            Parameters parameters = camera.getParameters();
            List<String> list = parameters.getSupportedFlashModes();
            for (String string : list) {
                if (Parameters.FLASH_MODE_TORCH.equals(string)) {
                    parameters.setFlashMode(string);
                    camera.setParameters(parameters);
                    camera.startPreview();
                    return camera;
                }
            }
        }
    } catch (Exception e) {
    }
    return null;
}

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From source file:com.octopepper.mediapickerinstagram.commons.cameraview.api14.Camera1.java

public void takePictureInternal() {
    mCamera.takePicture(null, null, null, new Camera.PictureCallback() {
        @Override// w  ww  .  ja  va2 s.  c  o  m
        public void onPictureTaken(byte[] data, Camera camera) {
            mCallback.onPictureTaken(data);
            camera.startPreview();
        }
    });
}

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From source file:io.mariachi.allianzvision.camera.api14.Camera1.java

public void takePictureInternal() {
    mCamera.takePicture(null, null, null, new Camera.PictureCallback() {
        @Override//from   w  w  w .  j  av  a  2  s .  com
        public void onPictureTaken(byte[] data, Camera camera) {
            mCallback.onPictureTaken(data);
            camera.cancelAutoFocus();
            camera.startPreview();
        }
    });
}

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From source file:com.personal.xiri.only.common.camera.Camera1.java

void takePictureInternal() {
    if (!isPictureCaptureInProgress.getAndSet(true)) {
        mCamera.takePicture(null, null, null, new Camera.PictureCallback() {
            @Override/*from   w ww.  j a  va 2s .com*/
            public void onPictureTaken(byte[] data, Camera camera) {
                isPictureCaptureInProgress.set(false);
                mCallback.onPictureTaken(data);
                camera.cancelAutoFocus();
                camera.startPreview();
            }
        });
    }
}

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From source file:com.google.android.cameraview.Camera1.java

void takePictureInternal() {
    if (!isPictureCaptureInProgress.getAndSet(true)) {
        mCamera.takePicture(null, null, null, new Camera.PictureCallback() {
            @Override//from www. j  a va2  s  .c o m
            public void onPictureTaken(byte[] data, Camera camera) {
                isPictureCaptureInProgress.set(false);
                mCallback.onPictureTaken(data);
                if (!isCameraOpened())
                    return;
                camera.cancelAutoFocus();
                camera.startPreview();
            }
        });
    }
}

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From source file:com.example.android.animationsdemo.CameraActivity.java

private void startFocus(int x, int y) {
    if (mCamera != null) {
        mCamera.cancelAutoFocus();//from ww  w  .j  a v  a2 s.  co m
        Rect focusRect = calculateTapArea(x, y);

        Camera.Parameters parameters = mCamera.getParameters();
        if (parameters.getFocusMode() != Camera.Parameters.FOCUS_MODE_AUTO) {
            parameters.setFocusMode(Camera.Parameters.FOCUS_MODE_AUTO);
        }
        if (parameters.getMaxNumFocusAreas() > 0) {
            List<Camera.Area> mylist = new ArrayList<Camera.Area>();
            mylist.add(new Camera.Area(focusRect, 1000));
            parameters.setFocusAreas(mylist);
        }

        try {
            mCamera.cancelAutoFocus();
            mCamera.setParameters(parameters);
            mCamera.startPreview();
            mCamera.autoFocus(new Camera.AutoFocusCallback() {
                @Override
                public void onAutoFocus(boolean success, Camera camera) {
                    if (camera.getParameters()
                            .getFocusMode() != Camera.Parameters.FOCUS_MODE_CONTINUOUS_PICTURE) {
                        Camera.Parameters parameters = camera.getParameters();
                        parameters.setFocusMode(Camera.Parameters.FOCUS_MODE_CONTINUOUS_PICTURE);
                        if (parameters.getMaxNumFocusAreas() > 0) {
                            parameters.setFocusAreas(null);
                        }
                        camera.setParameters(parameters);
                        camera.startPreview();
                    }
                }
            });
        } catch (Exception e) {
            DKLog.e(TAG, Trace.getCurrentMethod() + e.toString());
        }
    }
}

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From source file:com.googlecode.android_scripting.facade.CameraFacade.java

@Rpc(description = "Take a picture and save it to the specified path.", returns = "A map of Booleans autoFocus and takePicture where True "
        + "indicates success. cameraId also included.")
public Bundle cameraCapturePicture(@RpcParameter(name = "targetPath") final String targetPath,
        @RpcParameter(name = "useAutoFocus") @RpcDefault("true") Boolean useAutoFocus,
        @RpcParameter(name = "cameraId", description = "Id of camera to use. SDK 9") @RpcDefault("0") Integer cameraId)
        throws Exception {
    final BooleanResult autoFocusResult = new BooleanResult();
    final BooleanResult takePictureResult = new BooleanResult();
    Camera camera = openCamera(cameraId);
    if (camera == null) {
        String msg = String.format("can't initialize camera id %d, try to use another id", cameraId);
        Log.e(msg);//from w  w w  . j av a2s. c om

        Bundle result = new Bundle();
        result.putInt("cameraId", cameraId);
        result.putBoolean("autoFocus", false);
        result.putBoolean("takePicture", false);
        result.putString("reason", msg + ", see logcat for details");
        return result;
    }
    Parameters prm = camera.getParameters();
    camera.setParameters(prm);

    try {
        Method method = camera.getClass().getMethod("setDisplayOrientation", int.class);
        method.invoke(camera, 90);
    } catch (Exception e) {
        Log.e(e);
    }

    try {
        FutureActivityTask<SurfaceHolder> previewTask = setPreviewDisplay(camera);
        camera.startPreview();
        if (useAutoFocus) {
            autoFocus(autoFocusResult, camera);
        }
        takePicture(new File(targetPath), takePictureResult, camera);
        previewTask.finish();
    } catch (Exception e) {
        Log.e(e);
    } finally {
        camera.release();
    }

    Bundle result = new Bundle();
    result.putBoolean("autoFocus", autoFocusResult.mmResult);
    result.putBoolean("takePicture", takePictureResult.mmResult);
    result.putInt("cameraId", cameraId);
    return result;
}

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From source file:com.android.launcher3.Utilities.java

public static void turnOnFlashLight(Context context) {
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
        CameraManager camManager = (CameraManager) context.getApplicationContext()
                .getSystemService(Context.CAMERA_SERVICE);
        String cameraId = null;//from   w ww  .  j a  v  a2  s. co  m
        try {
            cameraId = camManager.getCameraIdList()[0];
            camManager.setTorchMode(cameraId, true);
            isFlashLightOn = true;
        } catch (CameraAccessException e) {
            isFlashLightOn = false;
            e.printStackTrace();
        }
    } else {
        try {
            if (context.getPackageManager().hasSystemFeature(PackageManager.FEATURE_CAMERA_FLASH)) {
                Camera cam = Camera.open();
                Camera.Parameters p = cam.getParameters();
                p.setFlashMode(Camera.Parameters.FLASH_MODE_TORCH);
                cam.setParameters(p);
                cam.startPreview();
                isFlashLightOn = true;
            }
        } catch (Exception e) {
            e.printStackTrace();
            isFlashLightOn = false;
        }
    }
}

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From source file:jp.co.cyberagent.android.gpuimage.sample.activity.ActivityCamera.java

License:asdf

private void takePicture() {
    // TODO get a size that is about the size of the screen
    Camera.Parameters params = mCameraLoader.mCameraInstance.getParameters();
    params.setPictureSize(1280, 960);/*  w ww  . j  a v a2 s  . c om*/
    params.setRotation(90);
    mCameraLoader.mCameraInstance.setParameters(params);
    for (Camera.Size size2 : mCameraLoader.mCameraInstance.getParameters().getSupportedPictureSizes()) {
        Log.i("ASDF", "Supported: " + size2.width + "x" + size2.height);
    }
    mCameraLoader.mCameraInstance.takePicture(null, null, new Camera.PictureCallback() {

        @Override
        public void onPictureTaken(byte[] data, final Camera camera) {

            final File pictureFile = getOutputMediaFile(MEDIA_TYPE_IMAGE);
            if (pictureFile == null) {
                Log.d("ASDF", "Error creating media file, check storage permissions");
                return;
            }

            try {
                FileOutputStream fos = new FileOutputStream(pictureFile);
                fos.write(data);
                fos.close();
            } catch (FileNotFoundException e) {
                Log.d("ASDF", "File not found: " + e.getMessage());
            } catch (IOException e) {
                Log.d("ASDF", "Error accessing file: " + e.getMessage());
            }

            data = null;
            Bitmap bitmap = BitmapFactory.decodeFile(pictureFile.getAbsolutePath());
            // mGPUImage.setImage(bitmap);
            final GLSurfaceView view = (GLSurfaceView) findViewById(R.id.surfaceView);
            view.setRenderMode(GLSurfaceView.RENDERMODE_WHEN_DIRTY);
            mGPUImage.saveToPictures(bitmap, "GPUImage", System.currentTimeMillis() + ".jpg",
                    new OnPictureSavedListener() {

                        @Override
                        public void onPictureSaved(final Uri uri) {
                            pictureFile.delete();
                            camera.startPreview();
                            view.setRenderMode(GLSurfaceView.RENDERMODE_CONTINUOUSLY);
                        }
                    });
        }
    });
}

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