Java Code Examples for android.widget.ImageView#isInEditMode()

The following examples show how to use android.widget.ImageView#isInEditMode() . You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example 1
Source File: PhotoViewAttacher.java    From iBeebo with GNU General Public License v3.0 5 votes vote down vote up 
public PhotoViewAttacher(ImageView imageView) {
    mImageView = new WeakReference<ImageView>(imageView);

    imageView.setOnTouchListener(this);

    mViewTreeObserver = imageView.getViewTreeObserver();
    mViewTreeObserver.addOnGlobalLayoutListener(this);

    // Make sure we using MATRIX Scale Type
    setImageViewScaleTypeMatrix(imageView);

    if (!imageView.isInEditMode()) {
        // Create Gesture Detectors...
        mScaleDragDetector = VersionedGestureDetector.newInstance(imageView.getContext(), this);

        mGestureDetector = new GestureDetector(imageView.getContext(),
                new GestureDetector.SimpleOnGestureListener() {

                    // forward long click listener
                    @Override
                    public void onLongPress(MotionEvent e) {
                        if (null != mLongClickListener) {
                            mLongClickListener.onLongClick(mImageView.get());
                        }
                    }
                });

        mGestureDetector.setOnDoubleTapListener(this);

        // Finally, update the UI so that we're zoomable
        setZoomable(true);
    }
}
Example 2
Source File: PhotoViewAttacher.java    From WifiChat with GNU General Public License v2.0 5 votes vote down vote up 
public PhotoViewAttacher(ImageView imageView) {
    mImageView = new WeakReference<ImageView>(imageView);

    imageView.setOnTouchListener(this);

    mViewTreeObserver = imageView.getViewTreeObserver();
    mViewTreeObserver.addOnGlobalLayoutListener(this);

    // Make sure we using MATRIX Scale Type
    setImageViewScaleTypeMatrix(imageView);

    if (!imageView.isInEditMode()) {
        // Create Gesture Detectors...
        mScaleDragDetector = VersionedGestureDetector.newInstance(imageView.getContext(), this);

        mGestureDetector = new GestureDetector(imageView.getContext(),
                new GestureDetector.SimpleOnGestureListener() {

                    // forward long click listener
                    @Override
                    public void onLongPress(MotionEvent e) {
                        if (null != mLongClickListener) {
                            mLongClickListener.onLongClick(mImageView.get());
                        }
                    }
                });

        mGestureDetector.setOnDoubleTapListener(this);

        // Finally, update the UI so that we're zoomable
        setZoomable(true);
    }
}
Example 3
Source File: GifViewUtils.java    From android-gif-drawable-eclipse-sample with MIT License 5 votes vote down vote up 
static InitResult initImageView(ImageView view, AttributeSet attrs, int defStyleAttr, int defStyleRes) {
    if (attrs != null && !view.isInEditMode()) {
        final int sourceResId = getResourceId(view, attrs, true);
        final int backgroundResId = getResourceId(view, attrs, false);
        final boolean freezesAnimation = isFreezingAnimation(view, attrs, defStyleAttr, defStyleRes);
        return new InitResult(sourceResId, backgroundResId, freezesAnimation);
    }
    return new InitResult(0, 0, false);
}
Example 4
Source File: PhotoViewAttacher.java    From Nimingban with Apache License 2.0 5 votes vote down vote up 
public PhotoViewAttacher(ImageView imageView, boolean zoomable) {
    mImageView = new WeakReference<>(imageView);

    imageView.setDrawingCacheEnabled(true);
    imageView.setOnTouchListener(this);

    ViewTreeObserver observer = imageView.getViewTreeObserver();
    if (null != observer)
        observer.addOnGlobalLayoutListener(this);

    // Make sure we using MATRIX Scale Type
    setImageViewScaleTypeMatrix(imageView);

    if (imageView.isInEditMode()) {
        return;
    }
    // Create Gesture Detectors...
    mScaleDragDetector = VersionedGestureDetector.newInstance(
            imageView.getContext(), this);

    mGestureDetector = new GestureDetector(imageView.getContext(),
            new GestureDetector.SimpleOnGestureListener() {

                // forward long click listener
                @Override
                public void onLongPress(MotionEvent e) {
                    if (null != mLongClickListener) {
                        mLongClickListener.onLongClick(getImageView());
                    }
                }
            });

    mGestureDetector.setOnDoubleTapListener(new DefaultOnDoubleTapListener(this));

    mRotateGestureDetector = new RotateGestureDetector(imageView.getContext(), this);

    // Finally, update the UI so that we're zoomable
    setZoomable(zoomable);
}
Example 5
Source File: PhotoViewAttacher.java    From school_shop with MIT License 5 votes vote down vote up 
public PhotoViewAttacher(ImageView imageView) {
	mImageView = new WeakReference<ImageView>(imageView);

	imageView.setOnTouchListener(this);

	mViewTreeObserver = imageView.getViewTreeObserver();
	mViewTreeObserver.addOnGlobalLayoutListener(this);

	// Make sure we using MATRIX Scale Type
	setImageViewScaleTypeMatrix(imageView);

	if (!imageView.isInEditMode()) {
		// Create Gesture Detectors...
		mScaleDragDetector = VersionedGestureDetector.newInstance(imageView.getContext(), this);

		mGestureDetector = new GestureDetector(imageView.getContext(),
				new GestureDetector.SimpleOnGestureListener() {

					// forward long click listener
					@Override
					public void onLongPress(MotionEvent e) {
						if (null != mLongClickListener) {
							mLongClickListener.onLongClick(mImageView.get());
						}
					}
				});

		mGestureDetector.setOnDoubleTapListener(this);

		// Finally, update the UI so that we're zoomable
		setZoomable(true);
	}
}
Example 6
Source File: PhotoViewAttacher.java    From aurora-imui with MIT License 5 votes vote down vote up 
public PhotoViewAttacher(ImageView imageView, boolean fromChatActivity, Context context) {
	mImageView = new WeakReference<ImageView>(imageView);
       mFromChatActivity = fromChatActivity;
       mContext = context;
	imageView.setOnTouchListener(this);

	mViewTreeObserver = imageView.getViewTreeObserver();
	mViewTreeObserver.addOnGlobalLayoutListener(this);

	// Make sure we using MATRIX Scale Type
	setImageViewScaleTypeMatrix(imageView);

	if (!imageView.isInEditMode()) {
		// Create Gesture Detectors...
		mScaleDragDetector = VersionedGestureDetector.newInstance(imageView.getContext(), this);

		mGestureDetector = new GestureDetector(imageView.getContext(),
				new GestureDetector.SimpleOnGestureListener() {

					// forward long click listener
					@Override
					public void onLongPress(MotionEvent e) {
						if(null != mLongClickListener) {
							mLongClickListener.onLongClick(mImageView.get());
						}
					}});

		mGestureDetector.setOnDoubleTapListener(this);

		// Finally, update the UI so that we're zoomable
		setZoomable(true);
	}
}
Example 7
Source File: PhotoViewAttacher.java    From jmessage-android-uikit with MIT License 5 votes vote down vote up 
public PhotoViewAttacher(ImageView imageView, boolean fromChatActivity, Context context) {
	mImageView = new WeakReference<ImageView>(imageView);
       mFromChatActivity = fromChatActivity;
       mContext = context;
	imageView.setOnTouchListener(this);

	mViewTreeObserver = imageView.getViewTreeObserver();
	mViewTreeObserver.addOnGlobalLayoutListener(this);

	// Make sure we using MATRIX Scale Type
	setImageViewScaleTypeMatrix(imageView);

	if (!imageView.isInEditMode()) {
		// Create Gesture Detectors...
		mScaleDragDetector = VersionedGestureDetector.newInstance(imageView.getContext(), this);

		mGestureDetector = new GestureDetector(imageView.getContext(),
				new GestureDetector.SimpleOnGestureListener() {

					// forward long click listener
					@Override
					public void onLongPress(MotionEvent e) {
						if(null != mLongClickListener) {
							mLongClickListener.onLongClick(mImageView.get());
						}
					}});

		mGestureDetector.setOnDoubleTapListener(this);

		// Finally, update the UI so that we're zoomable
		setZoomable(true);
	}
}
Example 8
Source File: ImageViewScaler.java    From MultiView with Apache License 2.0 5 votes vote down vote up 
public ImageViewScaler(ImageView imageView, boolean zoomable) {
    mImageView = new WeakReference<>(imageView);

    imageView.setDrawingCacheEnabled(true);
    imageView.setOnTouchListener(this);

    ViewTreeObserver observer = imageView.getViewTreeObserver();
    if (null != observer)
        observer.addOnGlobalLayoutListener(this);

    // Make sure we using MATRIX Scale Type
    setImageViewScaleTypeMatrix(imageView);

    if (imageView.isInEditMode()) {
        return;
    }
    // Create Gesture Detectors...
    mScaleDragDetector = VersionedGestureDetector.newInstance(
            imageView.getContext(), this);

    mGestureDetector = new GestureDetector(imageView.getContext(),
            new GestureDetector.SimpleOnGestureListener() {

                // forward long click listener
                @Override
                public void onLongPress(MotionEvent e) {
                    if (null != mLongClickListener) {
                        mLongClickListener.onLongClick(getImageView());
                    }
                }
            });

    mGestureDetector.setOnDoubleTapListener(new DefaultOnDoubleTapListener(this));

    // Finally, update the UI so that we're zoomable
    setZoomable(zoomable);
}
Example 9
Source File: PhotoViewAttacher.java    From GalleryFinal with Apache License 2.0 5 votes vote down vote up 
public PhotoViewAttacher(ImageView imageView, boolean zoomable) {
    mImageView = new WeakReference<>(imageView);

    imageView.setDrawingCacheEnabled(true);
    imageView.setOnTouchListener(this);

    ViewTreeObserver observer = imageView.getViewTreeObserver();
    if (null != observer)
        observer.addOnGlobalLayoutListener(this);

    // Make sure we using MATRIX Scale Type
    setImageViewScaleTypeMatrix(imageView);

    if (imageView.isInEditMode()) {
        return;
    }
    // Create Gesture Detectors...
    mScaleDragDetector = VersionedGestureDetector.newInstance(
            imageView.getContext(), this);

    mGestureDetector = new GestureDetector(imageView.getContext(),
            new GestureDetector.SimpleOnGestureListener() {

                // forward long click listener
                @Override
                public void onLongPress(MotionEvent e) {
                    if (null != mLongClickListener) {
                        mLongClickListener.onLongClick(getImageView());
                    }
                }
            });

    mGestureDetector.setOnDoubleTapListener(new DefaultOnDoubleTapListener(this));

    // Finally, update the UI so that we're zoomable
    setZoomable(zoomable);
}
Example 10
Source File: PhotoViewAttacher.java    From MoeGallery with GNU General Public License v3.0 5 votes vote down vote up 
public PhotoViewAttacher(ImageView imageView, boolean zoomable) {
    mImageView = new WeakReference<>(imageView);

    imageView.setDrawingCacheEnabled(true);
    imageView.setOnTouchListener(this);

    ViewTreeObserver observer = imageView.getViewTreeObserver();
    if (null != observer)
        observer.addOnGlobalLayoutListener(this);

    // Make sure we using MATRIX Scale Type
    setImageViewScaleTypeMatrix(imageView);

    if (imageView.isInEditMode()) {
        return;
    }
    // Create Gesture Detectors...
    mScaleDragDetector = VersionedGestureDetector.newInstance(
            imageView.getContext(), this);

    mGestureDetector = new GestureDetector(imageView.getContext(),
            new GestureDetector.SimpleOnGestureListener() {

                // forward long click listener
                @Override
                public void onLongPress(MotionEvent e) {
                    if (null != mLongClickListener) {
                        mLongClickListener.onLongClick(getImageView());
                    }
                }
            });

    mGestureDetector.setOnDoubleTapListener(new DefaultOnDoubleTapListener(this));

    // Finally, update the UI so that we're zoomable
    setZoomable(zoomable);
}
Example 11
Source File: PhotoViewAttacher.java    From narrate-android with Apache License 2.0 5 votes vote down vote up 
public PhotoViewAttacher(ImageView imageView) {
    mImageView = new WeakReference<ImageView>(imageView);

    imageView.setDrawingCacheEnabled(true);
    imageView.setOnTouchListener(this);

    ViewTreeObserver observer = imageView.getViewTreeObserver();
    if (null != observer)
        observer.addOnGlobalLayoutListener(this);

    // Make sure we using MATRIX Scale Type
    setImageViewScaleTypeMatrix(imageView);

    if (imageView.isInEditMode()) {
        return;
    }
    // Create Gesture Detectors...
    mScaleDragDetector = VersionedGestureDetector.newInstance(
            imageView.getContext(), this);

    mGestureDetector = new GestureDetector(imageView.getContext(),
            new GestureDetector.SimpleOnGestureListener() {

                // forward long click listener
                @Override
                public void onLongPress(MotionEvent e) {
                    if (null != mLongClickListener) {
                        mLongClickListener.onLongClick(getImageView());
                    }
                }
            });

    mGestureDetector.setOnDoubleTapListener(new DefaultOnDoubleTapListener(this));

    // Finally, update the UI so that we're zoomable
    setZoomable(true);
}
Example 12
Source File: GifViewUtils.java    From sketch with Apache License 2.0 5 votes vote down vote up 
static GifImageViewAttributes initImageView(ImageView view, AttributeSet attrs, int defStyleAttr, int defStyleRes) {
	if (attrs != null && !view.isInEditMode()) {
		final GifImageViewAttributes viewAttributes = new GifImageViewAttributes(view, attrs, defStyleAttr, defStyleRes);
		final int loopCount = viewAttributes.mLoopCount;
		if (loopCount >= 0) {
			applyLoopCount(loopCount, view.getDrawable());
			applyLoopCount(loopCount, view.getBackground());
		}
		return viewAttributes;
	}
	return new GifImageViewAttributes();
}
Example 13
Source File: PhotoViewAttacher.java    From zen4android with MIT License 5 votes vote down vote up 
public PhotoViewAttacher(ImageView imageView) {
    mImageView = new WeakReference<ImageView>(imageView);

    imageView.setOnTouchListener(this);

    ViewTreeObserver observer = imageView.getViewTreeObserver();
    if (null != observer)
        observer.addOnGlobalLayoutListener(this);

    // Make sure we using MATRIX Scale Type
    setImageViewScaleTypeMatrix(imageView);

    if (imageView.isInEditMode()) {
        return;
    }
    // Create Gesture Detectors...
    mScaleDragDetector = VersionedGestureDetector.newInstance(
            imageView.getContext(), this);

    mGestureDetector = new GestureDetector(imageView.getContext(),
            new GestureDetector.SimpleOnGestureListener() {

                // forward long click listener
                @Override
                public void onLongPress(MotionEvent e) {
                    if (null != mLongClickListener) {
                        mLongClickListener.onLongClick(getImageView());
                    }
                }
            });

    mGestureDetector.setOnDoubleTapListener(this);

    // Finally, update the UI so that we're zoomable
    setZoomable(true);
}
Example 14
Source File: PhotoViewAttacher.java    From o2oa with GNU Affero General Public License v3.0 5 votes vote down vote up 
public PhotoViewAttacher(ImageView imageView, boolean fromChatActivity, Context context) {
	mImageView = new WeakReference<ImageView>(imageView);
       mFromChatActivity = fromChatActivity;
       mContext = context;
	imageView.setOnTouchListener(this);

	mViewTreeObserver = imageView.getViewTreeObserver();
	mViewTreeObserver.addOnGlobalLayoutListener(this);

	// Make sure we using MATRIX Scale Type
	setImageViewScaleTypeMatrix(imageView);

	if (!imageView.isInEditMode()) {
		// Create Gesture Detectors...
		mScaleDragDetector = VersionedGestureDetector.newInstance(imageView.getContext(), this);

		mGestureDetector = new GestureDetector(imageView.getContext(),
				new GestureDetector.SimpleOnGestureListener() {

					// forward long click listener
					@Override
					public void onLongPress(MotionEvent e) {
						if(null != mLongClickListener) {
							mLongClickListener.onLongClick(mImageView.get());
						}
					}});

		mGestureDetector.setOnDoubleTapListener(this);

		// Finally, update the UI so that we're zoomable
		setZoomable(true);
	}
}
Example 15
Source File: PhotoViewAttacher.java    From BlackLight with GNU General Public License v3.0 5 votes vote down vote up 
public PhotoViewAttacher(ImageView imageView) {
    mImageView = new WeakReference<ImageView>(imageView);

    imageView.setDrawingCacheEnabled(true);
    imageView.setOnTouchListener(this);

    ViewTreeObserver observer = imageView.getViewTreeObserver();
    if (null != observer)
        observer.addOnGlobalLayoutListener(this);

    // Make sure we using MATRIX Scale Type
    setImageViewScaleTypeMatrix(imageView);

    if (imageView.isInEditMode()) {
        return;
    }
    // Create Gesture Detectors...
    mScaleDragDetector = VersionedGestureDetector.newInstance(
            imageView.getContext(), this);

    mGestureDetector = new GestureDetector(imageView.getContext(),
            new GestureDetector.SimpleOnGestureListener() {

                // forward long click listener
                @Override
                public void onLongPress(MotionEvent e) {
                    if (null != mLongClickListener) {
                        mLongClickListener.onLongClick(getImageView());
                    }
                }
            });

    mGestureDetector.setOnDoubleTapListener(new DefaultOnDoubleTapListener(this));

    // Finally, update the UI so that we're zoomable
    setZoomable(true);
}
Example 16
Source File: PhotoViewAttacher.java    From light-novel-library_Wenku8_Android with GNU General Public License v2.0 5 votes vote down vote up 
public PhotoViewAttacher(ImageView imageView) {
    mImageView = new WeakReference<ImageView>(imageView);

    imageView.setDrawingCacheEnabled(true);
    imageView.setOnTouchListener(this);

    ViewTreeObserver observer = imageView.getViewTreeObserver();
    if (null != observer)
        observer.addOnGlobalLayoutListener(this);

    // Make sure we using MATRIX Scale Type
    setImageViewScaleTypeMatrix(imageView);

    if (imageView.isInEditMode()) {
        return;
    }
    // Create Gesture Detectors...
    mScaleDragDetector = VersionedGestureDetector.newInstance(
            imageView.getContext(), this);

    mGestureDetector = new GestureDetector(imageView.getContext(),
            new GestureDetector.SimpleOnGestureListener() {

                // forward long click listener
                @Override
                public void onLongPress(MotionEvent e) {
                    if (null != mLongClickListener) {
                        mLongClickListener.onLongClick(getImageView());
                    }
                }
            });

    mGestureDetector.setOnDoubleTapListener(new DefaultOnDoubleTapListener(this));

    // Finally, update the UI so that we're zoomable
    setZoomable(true);
}
Example 17
Source File: PhotoViewAttacher.java    From star-zone-android with Apache License 2.0 4 votes vote down vote up 
public PhotoViewAttacher(ImageView imageView, boolean zoomable) {
    mImageView = new WeakReference<>(imageView);

    imageView.setDrawingCacheEnabled(true);
    imageView.setOnTouchListener(this);

    ViewTreeObserver observer = imageView.getViewTreeObserver();
    if (null != observer)
        observer.addOnGlobalLayoutListener(this);

    // Make sure we using MATRIX Scale Type
    setImageViewScaleTypeMatrix(imageView);

    if (imageView.isInEditMode()) {
        return;
    }
    // Create Gesture Detectors...
    mScaleDragDetector = VersionedGestureDetector.newInstance(
            imageView.getContext(), this);

    mGestureDetector = new GestureDetector(imageView.getContext(),
                                           new GestureDetector.SimpleOnGestureListener() {

                                               // forward long click listener
                                               @Override
                                               public void onLongPress(MotionEvent e) {
                                                   if (null != mLongClickListener) {
                                                       mLongClickListener.onLongClick(getImageView());
                                                   }
                                               }

                                               @Override
                                               public boolean onFling(MotionEvent e1, MotionEvent e2,
                                                                      float velocityX, float velocityY) {
                                                   if (mSingleFlingListener != null) {
                                                       if (getScale() > DEFAULT_MIN_SCALE) {
                                                           return false;
                                                       }

                                                       if (MotionEventCompat.getPointerCount(e1) > SINGLE_TOUCH
                                                               || MotionEventCompat.getPointerCount(e2) > SINGLE_TOUCH) {
                                                           return false;
                                                       }

                                                       return mSingleFlingListener.onFling(e1, e2, velocityX, velocityY);
                                                   }
                                                   return false;
                                               }
                                           });

    mGestureDetector.setOnDoubleTapListener(new DefaultOnDoubleTapListener(this));
    mBaseRotation = 0.0f;

    // Finally, update the UI so that we're zoomable
    setZoomable(zoomable);
}
Example 18
Source File: PhotoViewAttacher.java    From AndroidPickPhotoDialog with Apache License 2.0 4 votes vote down vote up 
public PhotoViewAttacher(ImageView imageView, boolean zoomable) {
    mImageView = new WeakReference<>(imageView);

    imageView.setDrawingCacheEnabled(true);
    imageView.setOnTouchListener(this);

    ViewTreeObserver observer = imageView.getViewTreeObserver();
    if (null != observer)
        observer.addOnGlobalLayoutListener(this);

    // Make sure we using MATRIX Scale Type
    setImageViewScaleTypeMatrix(imageView);

    if (imageView.isInEditMode()) {
        return;
    }
    // Create Gesture Detectors...
    mScaleDragDetector = VersionedGestureDetector.newInstance(
            imageView.getContext(), this);

    mGestureDetector = new GestureDetector(imageView.getContext(),
            new GestureDetector.SimpleOnGestureListener() {

                // forward long click listener
                @Override
                public void onLongPress(MotionEvent e) {
                    if (null != mLongClickListener) {
                        mLongClickListener.onLongClick(getImageView());
                    }
                }

                @Override
                public boolean onFling(MotionEvent e1, MotionEvent e2,
                                       float velocityX, float velocityY) {
                    if (mSingleFlingListener != null) {
                        if (getScale() > DEFAULT_MIN_SCALE) {
                            return false;
                        }

                        if (MotionEventCompat.getPointerCount(e1) > SINGLE_TOUCH
                                || MotionEventCompat.getPointerCount(e2) > SINGLE_TOUCH) {
                            return false;
                        }

                        return mSingleFlingListener.onFling(e1, e2, velocityX, velocityY);
                    }
                    return false;
                }
            });

    mGestureDetector.setOnDoubleTapListener(new DefaultOnDoubleTapListener(this));
    mBaseRotation = 0.0f;

    // Finally, update the UI so that we're zoomable
    setZoomable(zoomable);
}
Example 19
Source File: PhotoViewAttacher.java    From Album with Apache License 2.0 4 votes vote down vote up 
public PhotoViewAttacher(ImageView imageView, boolean zoomable) {
    mImageView = new WeakReference<>(imageView);

    imageView.setDrawingCacheEnabled(true);
    imageView.setOnTouchListener(this);

    ViewTreeObserver observer = imageView.getViewTreeObserver();
    if (null != observer) observer.addOnGlobalLayoutListener(this);

    // Make sure we using MATRIX Scale Type
    setImageViewScaleTypeMatrix(imageView);

    if (imageView.isInEditMode()) {
        return;
    }
    // Create Gesture Detectors...
    mScaleDragDetector = VersionedGestureDetector.newInstance(imageView.getContext(), this);

    mGestureDetector = new GestureDetector(imageView.getContext(), new GestureDetector.SimpleOnGestureListener() {

        // forward long click listener
        @Override
        public void onLongPress(MotionEvent e) {
            if (null != mLongClickListener) {
                mLongClickListener.onLongClick(getImageView());
            }
        }

        @Override
        public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) {
            if (mSingleFlingListener != null) {
                if (getScale() > DEFAULT_MIN_SCALE) {
                    return false;
                }

                if (MotionEventCompat.getPointerCount(e1) > SINGLE_TOUCH ||
                    MotionEventCompat.getPointerCount(e2) > SINGLE_TOUCH) {
                    return false;
                }

                return mSingleFlingListener.onFling(e1, e2, velocityX, velocityY);
            }
            return false;
        }
    });

    mGestureDetector.setOnDoubleTapListener(new DefaultOnDoubleTapListener(this));
    mBaseRotation = 0.0f;

    // Finally, update the UI so that we're zoomable
    setZoomable(zoomable);
}
Example 20
Source File: PhotoViewAttacher.java    From Android with MIT License 4 votes vote down vote up 
public PhotoViewAttacher(ImageView imageView, boolean zoomable) {
    mImageView = new WeakReference<>(imageView);

    imageView.setDrawingCacheEnabled(true);
    imageView.setOnTouchListener(this);

    ViewTreeObserver observer = imageView.getViewTreeObserver();
    if (null != observer)
        observer.addOnGlobalLayoutListener(this);

    // Make sure we using MATRIX Scale Type
    setImageViewScaleTypeMatrix(imageView);

    if (imageView.isInEditMode()) {
        return;
    }
    // Create Gesture Detectors...
    mScaleDragDetector = VersionedGestureDetector.newInstance(
            imageView.getContext(), this);

    mGestureDetector = new GestureDetector(imageView.getContext(),
            new GestureDetector.SimpleOnGestureListener() {

                // forward long click listener
                @Override
                public void onLongPress(MotionEvent e) {
                    if (null != mLongClickListener) {
                        mLongClickListener.onLongClick(getImageView());
                    }
                }

                @Override
                public boolean onFling(MotionEvent e1, MotionEvent e2,
                                       float velocityX, float velocityY) {
                    if (mSingleFlingListener != null) {
                        if (getScale() > DEFAULT_MIN_SCALE) {
                            return false;
                        }

                        if (MotionEventCompat.getPointerCount(e1) > SINGLE_TOUCH
                                || MotionEventCompat.getPointerCount(e2) > SINGLE_TOUCH) {
                            return false;
                        }

                        return mSingleFlingListener.onFling(e1, e2, velocityX, velocityY);
                    }
                    return false;
                }
            });

    mGestureDetector.setOnDoubleTapListener(new DefaultOnDoubleTapListener(this));
    mBaseRotation = 0.0f;

    // Finally, update the UI so that we're zoomable
    setZoomable(zoomable);
}