Android Custom button persistence

Author: playerc

Link: http://www.cnblogs.com/playerc/archive/2013/05/24/android_keep_button_pressed.html

If you do not want to use the TabHost control provided by Android, You can implement a simple function. After View. setPress (boolean pressed) is enabled, the View status is restored immediately and does not meet the requirements. So Baidu and Google.

Finally, find the ideal answer on StackOverFlow, as shown below:

Create selector type xml under drawable

<Selector xmlns: android = "http://schemas.android.com/apk/res/android"> <item android: state_selected = "false" android: state_focused = "false" android: state_pressed = "false"> <bitmap... /> </item> <item android: state_selected = "true"> <bitmap... /> </item> <item android: state_focused = "true"> <bitmap... /> </item> <item android: state_pressed = "true"> <bitmap... /> </item> </selector>

Key point: The selected state image is the same as the pressed image. Of course, if you want to set it to another one .. Whatever you want.

View. setBackGroundResource (R. drawable. selector );

When you need to switch the status, view. setSelected (true)... directly in OnTouchEvent.