java - 找不到 mediaRouteTheme

Question

当我尝试创建如下所示的样式时: https://developers.google.com/cast/docs/android_sender_advanced#customize_cast_button像这样:

<style name="AppTheme" parent="Theme.AppCompat.Light.NoActionBar">
    <item name="colorPrimary">#7788FF</item>
    <item name="colorPrimaryDark">#7700FF</item>
    <item name="mediaRouteTheme">@style/CustomMediaRouterTheme</item>
</style>

<style name="CustomMediaRouterTheme" parent="Theme.MediaRouter">
    <item name="mediaRouteButtonStyle">@style/CustomMediaRouteButtonStyle</item>
</style>

<style name="CustomMediaRouteButtonStyle" parent="Widget.MediaRouter.Light.MediaRouteButton">
    <item name="buttonTint">#CCCC00</item>
</style>

我收到以下错误:

Error:error: style attribute 'attr/mediaRouteTheme (aka com.*:attr/mediaRouteTheme)' not found.

我做错了什么？

Answer 1

我在 build.gradle compile 'com.android.support:mediarouter-v7:25.3.1'

中使用了这个依赖

并且在style.xml

    <!-- Base application theme. -->
<style name="AppTheme" parent="Theme.AppCompat.Light.NoActionBar">
    <!-- Customize your theme here. -->
    <item name="colorPrimary">@color/colorPrimary</item>
    <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
    <item name="colorAccent">@color/colorAccent</item>
    <item name="mediaRouteTheme">@style/CustomMediaRouterTheme</item>
</style>


<style name="CustomMediaRouterTheme" parent="Theme.MediaRouter">
    <item name="mediaRouteButtonStyle">@style/CustomMediaRouteButtonStyle</item>
</style>

<style name="CustomMediaRouteButtonStyle" parent="Widget.MediaRouter.Light.MediaRouteButton">
    <item name="buttonTint">#CCCC00</item>
</style>

它工作正常，没有出现任何错误。尝试使用此 gradle 依赖项。