Actionbar Changing the background color (theme)

1. The default is the black background,

2. Change the theme theme to Theme.AppCompat.Light, the list file subject is as follows:

    <ApplicationAndroid:name= "Com.itheima.googleplay.global.GooglePlayApplication"Android:allowbackup= "true"Android:icon= "@drawable/ic_launcher"Android:label= "@string/app_name"Android:theme= "@style/theme.appcompat.light" >        <ActivityAndroid:name= "Com.itheima.googleplay.ui.activity.MainActivity"Android:label= "@string/app_name" >            <Intent-filter>                <ActionAndroid:name= "Android.intent.action.MAIN" />                <categoryAndroid:name= "Android.intent.category.LAUNCHER" />            </Intent-filter>        </Activity>        <ActivityAndroid:name= "Com.itheima.googleplay.ui.activity.HomeDetailActivity" >        </Activity>    </Application>

You can also change the theme of an activity individually, the manifest file:

    <ApplicationAndroid:name= "Com.itheima.googleplay.global.GooglePlayApplication"Android:allowbackup= "true"Android:icon= "@drawable/ic_launcher"Android:label= "@string/app_name"         >        <ActivityAndroid:name= "Com.itheima.googleplay.ui.activity.MainActivity"Android:label= "@string/app_name"Android:theme= "@style/theme.appcompat.light" >            <Intent-filter>                <ActionAndroid:name= "Android.intent.action.MAIN" />                <categoryAndroid:name= "Android.intent.category.LAUNCHER" />            </Intent-filter>        </Activity>        <ActivityAndroid:name= "Com.itheima.googleplay.ui.activity.HomeDetailActivity" >        </Activity>    </Application>

Effects such as:

Actionbar Changing the background color (theme)