'android.view.surfaceholder Android.view.surfaceview.getholder()' On A Null Object Reference In Surfaceview

I am trying to show a camera preview in a dialogue. Every time I try to run the app I have the following error: java.lang.RuntimeException: Unable to start activity ComponentInfo{c

Solution 1:

change camera class to this:

public class CameraExample extends AnimatedViewContainer {

privatefinalstaticStringTAG="CameraExample";

private Context mContext;
private SurfaceView mPreview;
publicCameraExample(Context context, int i) {
    super(context, i);
    mContext = context;

}

@OverridepublicvoidonCreateViewContent(LayoutInflater layoutInflater, ViewGroup parentGroup, View[] containerViews, int index) {
    containerViews[index] = layoutInflater.inflate(R.layout.example_camera, parentGroup, false);
    FrameLayoutpreviewFrame= (FrameLayout) containerViews[index].findViewById(R.id.preview);

    //this have been line moved here from constructor 
    mPreview = (SurfaceView) findViewById(R.id.surfaceView);
    CameraPreviewmgr=newCameraPreview(mContext, mPreview);
    mgr.init();

    // Add preview for inflation
    previewFrame.addView(mPreview);

}

}