SSIV Test App Subsampling Scale Image View View on GitHub Animate Next Previous Rotate Reset Basic features Basic features Pinch to zoom Use a two finger pinch to zoom in and out. The zoom is centred on the pinch gesture, and you can pan at the same time. Quick scale Double tap and swipe up or down to zoom in or out. The zoom is centred where you tapped. Drag Use one finger to drag the image around. Fling If you drag quickly and let go, fling momentum keeps the image moving. Double tap Double tap the image to zoom in to that spot. Double tap again to zoom out. Image display Image display Large images This image is 7,800 x 6,240 pixels. On most devices it will be subsampled, and higher quality tiles are loaded as you zoom in. Rotation This image has been rotated 90 degrees. Tap the button to rotate it. EXIF rotation is supported for external files. Display region Set the region to display instead of the whole image. Event handling Event handling Simple events Touch handling by the image view doesn\'t prevent normal events from working. OnClickListener This view has an OnClickListener. Tap once to activate the click. OnLongClickListener This view has an OnLongClickListener. Press and hold to activate it. Advanced event handling Advanced event handling Overriding gestures Some gestures can be overridden with your own GestureDetector without affecting the image view. This allows you to get the coordinates of the event. onSingleTapConfirmed onSingleTapConfirmed has been overridden. Tap the image to see coordinates. onDoubleTap onDoubleTap has been overridden. Tap the image to see coordinates. This overrides the default zoom in behaviour. onLongPress onLongPress has been overridden. Press and hold the image to see coordinates. Other events You can override any event you want, but customising swipe, fling and zoom gestures will stop the view working normally. View pager galleries View pager gallery Horizontal This gallery has two images in a ViewPager. Swipe to move to the next image. If you\'re zoomed in on an image, you need to pan to the right of it, then swipe again to activate the pager. Vertical Vertical view pagers are also supported. Swipe up to move to the next image. If you\'re zoomed in on an image, you need to pan to the bottom of it, then swipe again to activate the pager. Animation Animation A demo Tap the play button. The image will scale and zoom to a random point, shown by a marker. Limited pan If the target point is near the edge of the image, it will be moved as near to the center as possible. Unlimited pan With unlimited or center-limited pan, the target point can always be animated to the center. Customisation Duration and easing are configurable. You can also make animations non-interruptible. Extension Extension Location pin This view class extends the image view, and adds a pin anchored to a point on the image. Overlaid circle A slightly more advanced example, this shows a circle that will move and scale with the image. (Due to a limitation in Android, this circle may disappear when it\'s larger than 2048px.) Freehand drawing This subclass adds event detection. Draw a freehand line; it will move with the image. (Due to a limitation in Android, your drawing may disappear when it\'s larger than 2048px.) Configuration Configuration Maximum scale The maximum scale has been set to 50dpi. You can zoom in until the image is very pixellated. Minimum tile DPI The minimum tile DPI has been set to 50dpi, to reduce memory usage. The next layer of tiles will not be loaded until the image is very pixellated. Pan disabled Dragging has been disabled. You can only zoom in to the centre point. Zoom disabled Zooming has been disabled. You can drag the image around. Double tap style On double tap, the tapped point is now zoomed to the center of the screen instead of remaining in the same place. Double tap style On double tap, the zoom now happens immediately. Double tap scale The double tap zoom scale has been set to 240dpi. Pan limit center The pan limit has been changed to PAN_LIMIT_CENTER. Panning stops when a corner reaches the centre of the screen. Pan limit outside The pan limit has been changed to PAN_LIMIT_OUTSIDE. Panning stops when the image is just off screen. Debug Debug has been enabled. This shows the tile boundaries and sizes.