public PhotoViewAttacher(ImageView imageView, bool fromChatActivity, Context context)
{
mImageView = new WeakReference <ImageView>(imageView);
mFromChatActivity = fromChatActivity;
mContext = context;
imageView.SetOnTouchListener(this);
mViewTreeObserver = imageView.ViewTreeObserver;
mViewTreeObserver.AddOnGlobalLayoutListener(this);
// Make sure we using MATRIX Scale Type
SetImageViewScaleTypeMatrix(imageView);
if (!imageView.IsInEditMode)
{
// Create Gesture Detectors...
mScaleDragDetector = VersionedGestureDetector.NewInstance(imageView.Context, this);
mGestureDetector = new GestureDetector(imageView.Context, new MySimpleOnGestureListener(mLongClickListener));
mGestureDetector.SetOnDoubleTapListener(this);
// Finally, update the UI so that we're zoomable
SetZoomable(true);
Update();
}
}
public static VersionedGestureDetector NewInstance(Context context, IOnGestureListener listener)
{
int sdkVersion = (int)Build.VERSION.SdkInt;
VersionedGestureDetector detector = null;
if (sdkVersion < (int)BuildVersionCodes.Eclair)
{
detector = new CupcakeDetector(context);
}
else if (sdkVersion < (int)BuildVersionCodes.Froyo)
{
detector = new EclairDetector(context);
}
else
{
detector = new FroyoDetector(context);
}
detector.mListener = listener;
return(detector);
}