java.lang.RuntimeException: Method called after release()

Question

1. If i am not using mCamera.release(); in surfaceDestroyed(....) then not able to launch CameraActivity again from another Activity [in short getting Unfortunately app has stopped] error, even not releasing Camera, but if i do tap on Home button [from CameraActivity], and then again launching my app, not getting any error (in short works fine, and opening CameraActivity without any problem)

2. And if i am using *mCamera.release();* in surfaceDestroyed(....) then able to launch CameraActivity again from another Activity and releasing Camera as well, but when i do tap on Home button, and then again launching my app, getting Unfortunately app has stopped....:

But i want both things working together (first, Tap on Home from CameraActivity, and again launch app from CameraActivity - without any error) and (second, launching camera from another activity - without any error)

Like i wrote, both the things are working for me, but not together.....

Line number 33 is:

        Camera.Parameters parameters = mCamera.getParameters();

complete Log:

12-30 12:18:58.070: W/dalvikvm(14822): threadid=1: thread exiting with uncaught exception (group=0x41ef72a0)
12-30 12:18:58.080: E/AndroidRuntime(14822): FATAL EXCEPTION: main
12-30 12:18:58.080: E/AndroidRuntime(14822): java.lang.RuntimeException: Method called after release()
12-30 12:18:58.080: E/AndroidRuntime(14822):    at android.hardware.Camera.native_getParameters(Native Method)
12-30 12:18:58.080: E/AndroidRuntime(14822):    at android.hardware.Camera.getParameters(Camera.java:1487)
12-30 12:18:58.080: E/AndroidRuntime(14822):    at app.micheal.camr.PreviewSurface.surfaceCreated(PreviewSurface.java:33)
12-30 12:18:58.080: E/AndroidRuntime(14822):    at android.view.SurfaceView.updateWindow(SurfaceView.java:609)
12-30 12:18:58.080: E/AndroidRuntime(14822):    at android.view.SurfaceView.onWindowVisibilityChanged(SurfaceView.java:235)
12-30 12:18:58.080: E/AndroidRuntime(14822):    at android.view.View.dispatchWindowVisibilityChanged(View.java:7686)
12-30 12:18:58.080: E/AndroidRuntime(14822):    at android.view.ViewGroup.dispatchWindowVisibilityChanged(ViewGroup.java:1047)
12-30 12:18:58.080: E/AndroidRuntime(14822):    at android.view.ViewGroup.dispatchWindowVisibilityChanged(ViewGroup.java:1047)
12-30 12:18:58.080: E/AndroidRuntime(14822):    at android.view.ViewGroup.dispatchWindowVisibilityChanged(ViewGroup.java:1047)
12-30 12:18:58.080: E/AndroidRuntime(14822):    at android.view.ViewGroup.dispatchWindowVisibilityChanged(ViewGroup.java:1047)
12-30 12:18:58.080: E/AndroidRuntime(14822):    at android.view.ViewGroup.dispatchWindowVisibilityChanged(ViewGroup.java:1047)
12-30 12:18:58.080: E/AndroidRuntime(14822):    at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1339)
12-30 12:18:58.080: E/AndroidRuntime(14822):    at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1114)
12-30 12:18:58.080: E/AndroidRuntime(14822):    at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:4520)
12-30 12:18:58.080: E/AndroidRuntime(14822):    at android.view.Choreographer$CallbackRecord.run(Choreographer.java:725)
12-30 12:18:58.080: E/AndroidRuntime(14822):    at android.view.Choreographer.doCallbacks(Choreographer.java:555)
12-30 12:18:58.080: E/AndroidRuntime(14822):    at android.view.Choreographer.doFrame(Choreographer.java:525)
12-30 12:18:58.080: E/AndroidRuntime(14822):    at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:711)
12-30 12:18:58.080: E/AndroidRuntime(14822):    at android.os.Handler.handleCallback(Handler.java:615)
12-30 12:18:58.080: E/AndroidRuntime(14822):    at android.os.Handler.dispatchMessage(Handler.java:92)
12-30 12:18:58.080: E/AndroidRuntime(14822):    at android.os.Looper.loop(Looper.java:137)
12-30 12:18:58.080: E/AndroidRuntime(14822):    at android.app.ActivityThread.main(ActivityThread.java:4921)
12-30 12:18:58.080: E/AndroidRuntime(14822):    at java.lang.reflect.Method.invokeNative(Native Method)
12-30 12:18:58.080: E/AndroidRuntime(14822):    at java.lang.reflect.Method.invoke(Method.java:511)
12-30 12:18:58.080: E/AndroidRuntime(14822):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1036)
12-30 12:18:58.080: E/AndroidRuntime(14822):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:803)
12-30 12:18:58.080: E/AndroidRuntime(14822):    at dalvik.system.NativeStart.main(Native Method)
12-30 12:19:08.095: I/Process(14822): Sending signal. PID: 14822 SIG: 9

PreviewSurface.java:

public class PreviewSurface extends SurfaceView implements
SurfaceHolder.Callback {

    public static final String LOG_TAG = "CameraPreview";
    private SurfaceHolder mSurfaceHolder;

    private Camera mCamera;
    Camera.Parameters parameters = null ;

    // Constructor that obtains context and camera
    @SuppressWarnings("deprecation")
    public PreviewSurface(Context context, Camera camera) {
        super(context);
        this.mCamera = camera;          
        this.mSurfaceHolder = this.getHolder();
        this.mSurfaceHolder.addCallback(this);
        this.mSurfaceHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
        this.mSurfaceHolder.setFixedSize(100, 100);
    }

    @Override
    public void surfaceCreated(SurfaceHolder surfaceHolder) {
        try {       
                parameters = mCamera.getParameters();

                if (this.getResources().getConfiguration().orientation != Configuration.ORIENTATION_LANDSCAPE) 
                {
                     parameters.set("orientation", "portrait");
                     mCamera.setDisplayOrientation(90);
                     parameters.setRotation(90);
                     mCamera.setPreviewDisplay(surfaceHolder);
                     mCamera.startPreview();
                }
                else 
                {
                     // This is an undocumented although widely known feature
                     parameters.set("orientation", "landscape");
                     // For Android 2.2 and above
                     mCamera.setDisplayOrientation(0);
                     // Uncomment for Android 2.0 and above
                     parameters.setRotation(0);
                }

                mCamera.setPreviewDisplay(surfaceHolder);
                mCamera.startPreview();

            } catch (IOException e) {
                // left blank for now
            }
    }

    @Override
    public void surfaceDestroyed(SurfaceHolder surfaceHolder) {         
        mCamera.stopPreview();
        mCamera.release();          
    }


    @Override
    public void surfaceChanged(SurfaceHolder surfaceHolder, int format,
            int width, int height) {

        try {       
            parameters = mCamera.getParameters();
            if (this.getResources().getConfiguration().orientation != Configuration.ORIENTATION_LANDSCAPE) {
                 parameters.set("orientation", "portrait");
                 mCamera.setDisplayOrientation(90);
                 parameters.setRotation(90);

            }
                 else {
                      // This is an undocumented although widely known feature
                      parameters.set("orientation", "landscape");
                      // For Android 2.2 and above
                      mCamera.setDisplayOrientation(0);
                      // Uncomment for Android 2.0 and above
                      parameters.setRotation(0);
            }
            mCamera.setPreviewDisplay(surfaceHolder);
            mCamera.startPreview();


        } catch (IOException e) {
            // left blank for now
        }           
    }

}

Answer 1

try this, replace your code with mine, i guess this will help you, i have not tried but looks it will resolve your errors

      @Override
    public void surfaceDestroyed(SurfaceHolder surfaceHolder) {     

        this.getHolder().removeCallback(this);
        mCamera.stopPreview();
        mCamera.release();
    }

Let me know ASAP...