Theme and Style in Android

Can any one tell me how to 开发者_运维知识库apply theme and style in android.

Did you look at the tutorial? http://developer.android.com/guide/topics/ui/themes.html

Basically, add your styles like this.

<TextView
    style="@style/CodeFont"
    android:text="@string/hello" />

and your themes like this

<application android:theme="@style/CustomTheme">