FlipView Versions Save

Project update:

• Android Studio 3.2
• AndroidX 1.0.0
• SDK 28
• Gradle 4.10.2

• Pulled #13: Improved "checked" status, it had wrong value after flipping programmatically more than 2 times.
• DemoApp: changed signature and fixed scrolling in landscape.
• Upgraded project.

• Fixed #7: don't flip if the target child is the one currently displayed
• Reviewed comments for javaDoc
• Upgraded project and demoApp for API 25

• Added support to enable/disable flipping programmatically. Overridden setClickable() and setEnabled() [See #8].
• Adapted demo App to show how to make clickable/enabled/disabled the view.

• New attribute app:rearImageAnimationDelay with relative method.
• Fixed bugs #4 #5 #6.
• Overridden showNext() & showPrevious() methods from ViewAnimator: now they perform the flip accordingly with the existing settings and register its state.
• Since the FlipView uses shapes to define its border and shadows, one can use app:frontBackground & app:rearBackground for the custom Drawable with the desired shape, color and stroke, which always override inner Drawables. Alternatively you can do this also by assigning the resource to android:background of the custom layout. Because of that, at runtime, the method setChildBackgroundDrawable(child, drawable) has been reviewed (#2 #3).
• Instead, if you want to use the inner Drawable (OvalShape) and only change color with alpha value, you can do it at design time with app:frontBackgroundColor & app:rearBackgroundColor and at runtime with the new method setChildBackgroundColor(child, color): it always creates an OvalShape with the custom color (#2 #3). Note: setBackgroundColor is the method of android.view.View, so it does the default job!
• First version of ShapeDrawables static methods (Oval, Arc, RoundRect).
• Added new static method to enable/disable logs at runtime, debug logs are disabled by default.
• Added methods to retrieve front and rear ImageViews and front TextView objects.
• Automatic layer type software when setting PictureDrawable for SVG files (applied on ImageView reference only!).
• Adapted example to show Autostart and how 2 entire layouts can be animated ;-)

• Initial LayoutAnimation & Initial LayoutAnimationDuration; Reset & stop LayoutAnimationDelay
• Custom In&Out Animation; Rear ImageAnimation & Rear ImageAnimationDuration
• MainAnimationDuration
• Flip & flipSilently
• Custom FrontLayout & several custom RearLayout
• Create BitmapFrom, PictureDrawable & ImageBitmap
• Custom FrontImage, custom FrontText &, custom RearImage
• Custom Child BackgroundDrawable & color
• Create inner OvalDrawable, ScaleAnimation
• Some animation and Drawables already included into he project, so you can start to test it
• OnFlippingListener, inner onClick
• Example Activity