Like Button is a library that allows you to create a button with animation effects similar to Twitter's heart when you like something. To use this like button in your layout simply copy and paste the xml provided. There are several other attributes that can be used to configure the button's behaviour and appearance. They are shown below and will be explained in the sections that follow long with their java counterparts. To set the inital liked state of the button you simply use the setLiked functionality via XML or Java. This will show the button in the liked state with the drawable that you selected. ...
Animations for Android L drawer, back, dismiss and check icons
...A plain old View that draws the icon and provides an API to manipulate its state. You can embed it in any layout including a Toolbar. Customization is also available through xml attributes. he icon state is resolved by current offset value. Make sure you use offset between 0 and 1 for forward animation and 1 and 2 for backwards to correctly save icon state on activity recreation.