Android to achieve compatible water ripple effects _java

Look at the effect chart first.

In fact, to achieve this effect is very simple, as long as drawable drawablev21 two folders is good.

Selector in ordinary circumstances:

<?xml version= "1.0" encoding= "Utf-8"?> <selector xmlns:android=
"http://schemas.android.com/apk/res/" Android >
 <item android:drawable= "@color/menu_selected" android:state_pressed= "true"/>
 <item Android:drawable= "@android: Color/transparent"/>
</selector>

The selector in V21:

<?xml version= "1.0" encoding= "Utf-8"?> <ripple xmlns:android=
"http://schemas.android.com/apk/res/" Android "
 android:color=" @color/menu_selected
 ><!--Press color-->
 <!--bottom background drawable/color /bitmap-->
 <!--<item android:drawable= "@color/red"/>-->
</ripple>

Here ripple is the color pressed water ripple color, add one inside item , this item will become the background.

note that do not add transparent to item do the background, one is meaningless, the second will be unable to show the pressure effect of the problem.

This is the full content of this article, I hope the content of this article for everyone to develop Android can help.