Fehler beim Erweitern einer Klasse

Ich versuche, eine benutzerdefinierte Ansicht erstellen GhostSurfaceCameraView erweitert SurfaceView. Hier ist meine Klasse definition-Datei

GhostSurfaceCameraView.java:

public class GhostSurfaceCameraView extends SurfaceView implements SurfaceHolder.Callback {
    SurfaceHolder mHolder;
    Camera mCamera;

    GhostSurfaceCameraView(Context context) {
        super(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);
    }

    public void surfaceCreated(SurfaceHolder holder) {
        //The Surface has been created, acquire the camera and tell it where to draw.
        mCamera = Camera.open();
        try {
            mCamera.setPreviewDisplay(holder);
        } catch (IOException exception) {
            mCamera.release();
            mCamera = null;
            //TODO: add more exception handling logic here
        }
    }

    public void surfaceDestroyed(SurfaceHolder holder) {
        //Surface will be destroyed when we return, so stop the preview.
        //Because the CameraDevice object is not a shared resource, it's very
        //important to release it when the activity is paused.
        mCamera.stopPreview();
        mCamera.release();
        mCamera = null;
    }   

    public void surfaceChanged(SurfaceHolder holder, int format, int w, int h) {
        //Now that the size is known, set up the camera parameters and begin
        //the preview.
        Camera.Parameters parameters = mCamera.getParameters();
        parameters.setPreviewSize(w, h);
        parameters.set("orientation", "portrait");
        //parameters.setRotation(90); //API 5+
        mCamera.setParameters(parameters);
        mCamera.startPreview();
    }
}

- Und dies ist in meinen ghostviewscreen.xml:

<com.alpenglow.androcap.GhostSurfaceCameraView android:id="@+id/ghostview_cameraview"
  android:layout_width="fill_parent"
  android:layout_height="fill_parent"/>

Nun in der Aktivität habe ich gemacht:

protected void onCreate(Bundle savedInstanceState) {
    try {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.ghostviewscreen);
    }
}

Wenn setContentView() aufgerufen wird, wird eine Ausnahme geworfen:

Binary XML file 09-17 22:47:01.958: ERROR/ERROR(337):
ERROR IN CODE:
android.view.InflateException: Binary
XML file line #14: Error inflating
class
com.alpenglow.androcap.GhostSurfaceCameraView

Kann mir jemand sagen warum ich diese Fehlermeldung erhalten? Danke.

InformationsquelleAutor der Frage eccentricbiped | 2010-09-17