I get the similar kind of error in 2.3.4 but don't know how to fix
it.
On Jun 30, 10:01 am, dingding dangdang <ustcchenj...@gmail.com> wrote:
> I have some codes of takeing picture working at Android 2.1 and 2.2.
> But these codes broke at Android 2.3.
> After spending a time to fix this issue in vain, I would like to ask for
> help here.
>
> My code flow to take picture is like this:
>
> 1. create a class Camlayer extends SurfaceView
>
> public class CamLayer extends SurfaceView implements
> SurfaceHolder.Callback {
>
> private void init(Context context){
> // Install a SurfaceHolder.Callback so we get notified when
> the
> // underlying surface is created and destroyed.
> mHolder = getHolder();
> mHolder.addCallback(this);
> mHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
>
> mCamera = Camera.open();
> }
>
> public CamLayer(Context context) {
> super(context);
> init(context);
> }
>
> public CamLayer(Context context, AttributeSet attrs) {
> super(context, attrs);
> init(context);
> }
>
> public void surfaceChanged(SurfaceHolder holder, int format, int
> w, int h) {
> Log.i(TAG+".surfaceChanged", "being called!");
> Log.i(TAG+".surfaceChanged", "w="+w);
> Log.i(TAG+".surfaceChanged", "h="+h);
>
> if (isPreviewRunning) {
> mCamera.stopPreview();
> }
>
> try {
> mCamera.setPreviewDisplay(holder);
> mCamera.setPreviewCallback(mPreviewCallback);
> } catch (IOException e) {
> Log.e(TAG+".surfaceCreated",
> "mCamera.setPreviewDisplay(holder);");
> }
>
> Camera.Parameters p = mCamera.getParameters();
> setOptimalSize(p, w, h, SIZEOFPREVIEW);
> setOptimalSize(p, w, h, SIZEOFPICTURE);
> mCamera.setParameters(p);
>
> mCamera.startPreview();
> isPreviewRunning = true;
> }
>
> public void takePicture(){
> Log.i(TAG+".takePicture", "being called!");
> mCamera.takePicture(null, null, mPictureCallback);
> Log.i(TAG+".takePicture", "call ended!");
> }
>
> 2. CamLayer.takePicture() will be called by external classes to start
>
> 3. The problem is that at Android 2.3.3, the takePicture will hang, so an
> ANR problem is found. In /data/anr/traces.txt, below are found. As u can
> see, the native_takePicture never returns.
>
> DALVIK THREADS:
>
> (mutexes: tll=0 tsl=0 tscl=0 ghl=0 hwl=0 hwll=0)
>
> "main" prio=5 tid=1 NATIVE
>
> | group="main" sCount=1 dsCount=0 obj=0x40022170 self=0xce68
>
> | sysTid=2411 nice=0 sched=0/0 cgrp=default handle=-1345006464
>
> at android.hardware.Camera.native_takePicture(Native Method)
>
> at android.hardware.Camera.takePicture(Camera.java:746)
>
> at android.hardware.Camera.takePicture(Camera.java:710)
>
> at oms.cj.tube.camera.CamLayer.takePicture(CamLayer.java:256)
>
> at oms.cj.tube.camera.DefineColor.takePicture(DefineColor.java:61)
>
> at oms.cj.tube.camera.DefineColor.onKeyUp(DefineColor.java:71)
>
> at android.view.KeyEvent.dispatch(KeyEvent.java:1280)
>
> at android.app.Activity.dispatchKeyEvent(Activity.java:2078)
>
> at
> com.android.internal.policy.impl.PhoneWindow$DecorView.dispatchKeyEvent(PhoneWindow.java:16
> 66)
> at
> android.view.ViewRoot.deliverKeyEventToViewHierarchy(ViewRoot.java:2571)
>
> at android.view.ViewRoot.handleFinishedEvent(ViewRoot.java:2546)
>
> at android.view.ViewRoot.handleMessage(ViewRoot.java:1878)
>
> at android.os.Handler.dispatchMessage(Handler.java:99)
>
> at android.os.Looper.loop(Looper.java:123)
>
> at android.app.ActivityThread.main(ActivityThread.java:3691)
>
> at java.lang.reflect.Method.invokeNative(Native Method)
>
> at java.lang.reflect.Method.invoke(Method.java:507)
>
> at
> com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:841)
>
> at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:599)
>
> at dalvik.system.NativeStart.main(Native Method)
>
> Is there anybody having the same problem? And know how to fix it?
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