Is your activity implementing the Camera.PreviewCallback? As for the file writing stuff I agree that is a pretty intense thing to do several times a second, you might want to reconsider that or create a Thread that does the writing.
On Jul 26, 12:01 pm, TurboMan <[email protected]> wrote: > Hi, > > I have an application which uses Camera preview feature. > I can see the camera preview without any problem. > But, OOH I need to capture preview frame. > I've googled and find out the setPreviewCallback. > But my tablet PC doesn't callback this function as follows. > I am not sure if I am doing something wrong. > Any help is appreciated. > > In SurfaceHolder.Callback class in surfaceCreated function I have the > following code. > [Code] > mCamera = Camera.open(); > try { > mCamera.setPreviewCallback(new PreviewCallback() { > @Override > public void onPreviewFrame(byte[] data, Camera arg1) { > FileOutputStream outStream = null; > try { > outStream = new FileOutputStream(String.format( > "/sdcard/%d.jpg", System.currentTimeMillis())); > outStream.write(data); > outStream.close(); > Log.d(TAG, "onPreviewFrame - wrote bytes: " > + data.length); > } catch (FileNotFoundException e) { > e.printStackTrace(); > } catch (IOException e) { > e.printStackTrace(); > } finally { > } > Preview.this.invalidate(); > } > }); > mCamera.setPreviewDisplay(holder); > } catch (IOException exception) { > //} finally { > mCamera.release(); > mCamera = null; > } > [/Code] -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
