Android image viewer create custom image view http://javatechig.com/android/using-custom-activity-transition-in-gridview-image-gallery https://developer.android.com/training/animation/zoom.html library sintax viewer https://github.com/fiskurgit/SyntaxView AndroidExpandingViewLibrary https://github.com/diegodobelo/AndroidExpandingViewLibrary DrawerBehavior https://github.com/JakeWharton/DrawerBehavior AndroidNetworking https://github.com/amitshekhariitbhu/AndroidNetworking Rect scrollBounds = new Rect(); scrollView.getHitRect(scrollBounds); if (imageView.getLocalVisibleRect(scrollBounds)) { // Any portion of the imageView, even a single pixel, is within the visible window } else { // NONE of theSigue leyendo «Android image viewer create custom image view»