The one exception is that if the preview surface texture is not set (or set to null) before startPreview() is called, then this method may be called once with a non-null See also: setPreviewDisplay(SurfaceHolder) setErrorCallback Added in API level 1 void setErrorCallback (Camera.ErrorCallback cb) Registers a callback to be invoked when an error occurs. Gmail, Android and Google Play are the trademarks of Google Inc. The size should be width * height * (bits per pixel) / 8. this contact form
The Camera class is used to set image capture settings, start/stop preview, snap pictures, and retrieve frames for encoding for video. See also: getCameraDisabled(android.content.ComponentName) reconnect Added in API level 8 void reconnect () Reconnects to the camera service after another process used it. The actions broadcast by the Camera are ACTION_NEW_PICTURE, ACTION_NEW_VIDEO, CAMERA_ERROR_SERVER_DIED, and CAMERA_ERROR_UNKNOWN, neither of which would allow you to release the MediaRecorder before the error occurs. Call setDisplayOrientation(int) to ensure correct orientation of preview.
For example, suppose the current zoom is 0 and startSmoothZoom is called with value 3. We recommend using the new android.hardware.camera2 API for new applications. Parameters:cb - the callback to runSee Also:cancelAutoFocus(), Camera.Parameters.setAutoExposureLock(boolean), Camera.Parameters.setAutoWhiteBalanceLock(boolean) cancelAutoFocus public final void cancelAutoFocus() Cancels any auto-focus function in progress. If the same camera is opened by other applications, this will throw a RuntimeException….
The size should be width * height * bits_per_pixel / 8.See Also:setPreviewCallbackWithBuffer(PreviewCallback) addRawImageCallbackBuffer public final void addRawImageCallbackBuffer(bytecallbackBuffer) Adds a pre-allocated buffer to the raw image callback buffer queue. When you want, call takePicture(Camera.ShutterCallback, Camera.PictureCallback, Camera.PictureCallback, Camera.PictureCallback) to capture a photo. If this method has never been called, null will be returned by the raw image callback since there is no image callback buffer available. See Also:setParameters(Camera.Parameters) My AccountSearchMapsYouTubePlayNewsGmailDriveCalendarGoogle+TranslatePhotosMoreShoppingWalletFinanceDocsBooksBloggerContactsHangoutsEven more from GoogleSign inHidden fieldsBooksbooks.google.com - Mobile devices have evolved to focus on rich media production and consumption.
The size of the buffer must match the values described above. The camera will notify Camera.FaceDetectionListener of the detected faces in the preview frame. Call stopPreview() to stop updating the preview surface. Re-attempt to take a photo.
Parameters:listener - the listener to notifySee Also:startFaceDetection() startFaceDetection public final void startFaceDetection() Starts the face detection. If necessary, modify the returned Camera.Parameters object and call setParameters(Camera.Parameters). interface Camera.PictureCallback This interface was deprecated in API level 21. navigate here For details and restrictions, see the Content License. open Added in API level 1 Camera open () Creates a new Camera object to access the first back-facing camera on the device.
void setPreviewDisplay(SurfaceHolderholder) Sets the Surface to be used for live preview. setPreviewTexture Added in API level 11 void setPreviewTexture (SurfaceTexture surfaceTexture) Sets the SurfaceTexture to be used for live preview. Most long-running operations (preview, focus, photo capture, etc) happen asynchronously and invoke callbacks as necessary. See also: Camera.ErrorCallback Constant Value: 100 (0x00000064) CAMERA_ERROR_UNKNOWN Added in API level 1 int CAMERA_ERROR_UNKNOWN Unspecified camera error.
See Also:startFaceDetection() setErrorCallback public final void setErrorCallback(Camera.ErrorCallbackcb) Registers a callback to be invoked when an error occurs. If the current flash mode is not FLASH_MODE_OFF, flash may be fired during auto-focus, depending on the driver and camera hardware. But auto-focus routine may stop auto-exposure and auto-white balance transiently during focusing. his comment is here We recommend using the new android.hardware.camera2 API for new applications.
For example, if you use the camera and auto-focus feature, your Manifest should include the following: To take pictures with this class, final void setFaceDetectionListener(Camera.FaceDetectionListener listener) Registers a listener to be notified about the faces detected in the preview frame. Callbacks will be invoked on the event thread open(int) was called from. final void setPreviewCallbackWithBuffer(Camera.PreviewCallback cb) Installs a callback to be invoked for every preview frame, using buffers supplied with addCallbackBuffer(byte), in addition to displaying them on the screen.
Valid values are 0, 90, 180, and 270. For more details, please click here. Applications must call cancelAutoFocus to reset the focus. final Class> getClass() Returns the runtime class of this Object.
You must call release() when you are done using the camera, otherwise it will remain locked and be unavailable to other applications. final void setPreviewCallback(Camera.PreviewCallback cb) Installs a callback to be invoked for every preview frame in addition to displaying them on the screen. Broadcast Action: A new picture is taken by the camera, and the entry of the picture has been added to the media store. getData() is URI of the picture. There is no need to call this after recording starts or stops.
If necessary, modify the returned Camera.Parameters object and call setParameters(Camera.Parameters). Troubleshooting any problem first is the right thing to do than choosing to replace anything. So the users can see themselves as looking into a mirror. final void wait(long millis, int nanos) Causes the current thread to wait until another thread invokes the notify() method or the notifyAll() method for this object, or
Time is your main enemy as it will make the problem worse if not solved immediately. Parameters listener Camera.OnZoomChangeListener: the listener to notify See also: startSmoothZoom(int) startFaceDetection Added in API level 14 void startFaceDetection () Starts the face detection. staticinterface Camera.OnZoomChangeListener Callback interface for zoom changes during a smooth zoom operation. After calling takePicture(Camera.ShutterCallback, Camera.PictureCallback, Camera.PictureCallback) or stopPreview(), and then resuming preview with startPreview(), the apps should call this method again to resume face detection.
The timestamps provided by getTimestamp() for a SurfaceTexture set as the preview texture have an unspecified zero point, and cannot be directly compared between different cameras or different instances of Applications should add buffers back when they finish processing the data in them. developer.android.com/reference/android/media/… .