Drawables | CodePath Android Cliffnotes
CardView's background which will respond to android:state_selected and android:state_pressed - Stack Overflow
Android ImageButton selector example - Mkyong.com
selector属性详解_selector的state_checked默认不选择drawable-CSDN博客
How to create custom button with different states in Android – Android Xperts
Why does Android button shape changes but not color after applying background drawable (Android, button, Android drawable, development)? - Quora
Different image for focused,pressed and normal state in android button
Android button design using selector - YouTube
Android Button Design, Custom Button, Round Button, Color | DigitalOcean
Different image for focused,pressed and normal state in android button
How to Change the Background Color of Button in Android using ColorStateList? - GeeksforGeeks
Customized Buttons — Android. Fresh off the heels of my custom… | by Charles E. | Medium
The Android ImageButton Widget
make good button in android - Codepad
Android RelativeLayout Selector state_pressed doesn't work - Stack Overflow
Migrating our component library to the Material Button
iT 邦幫忙::一起幫忙解決難題，拯救IT 人的一天
android android:state_focused 无效-CSDN博客
Custom Button in Android App
Different image for focused,pressed and normal state in android button
The Android ImageButton Widget
