我想使用最新的appcompat这是更新的材料设计在我的应用程序，以显示切换视图显示在棒棒糖（http://android-developers.blogspot.in/2014/10/appcompat-v21-material-design-for-$p$p.html),是切换是没有得到显示问题我SDKmin是14，最大是21，我现在用的是低于code的布局：

 ＆LT; LinearLayout中的xmlns：机器人=htt​​p://schemas.android.com/apk/res/android
    的xmlns：工具=htt​​p://schemas.android.com/tool​​s
    的xmlns：程序=htt​​p://schemas.android.com/apk/res-auto
    机器人：layout_width =match_parent
    机器人：layout_height =match_parent
    机器人：方向=垂直
    机器人：ID =@ + ID / fragment_scheduler
    工具：上下文=com.stackoverflow.ranjith.androidprojdel.SchedulerUI＆GT;

＆LT; android.support.v7.widget.SwitchCompat
        机器人：layout_width =WRAP_CONTENT
        机器人：layout_height =WRAP_CONTENT
        机器人：文本=开关
        应用程序：showText =FALSE/＆GT;

    ＆LT;按钮
        机器人：layout_width =match_parent
        机器人：文本=开始
        机器人：ID =@ + ID /启动
        机器人：layout_height =WRAP_CONTENT/＆GT;
＆LT; / LinearLayout中＆GT;
 

Build.gradle：

 相关性{
    编译com.android.support:cardview-v7:+
    编译com.android.support:recyclerview-v7:+
    编译com.android.support:palette-v7:+
    编译com.android.support:support-v4:+
    编译com.android.support:appcompat-v7:21.0.+
    编译文件树（导演：库，包括：['的* .jar']）
}
 

解决方案

今天我同样的问题，但不知何故，在我的样本switchcompat工作。我认为有问题的应用程序的风格，它的父应设置为：

  Theme.AppCompat
 

I am trying to use the latest appcompat which was updated for material design in my app to show the switch view as displayed in Lollipop(http://android-developers.blogspot.in/2014/10/appcompat-v21-material-design-for-pre.html), the problem is the switch is not getting displayed. My SDKmin is 14 and max is 21. I am using the below code in the layout:

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    android:id="@+id/fragment_scheduler"
    tools:context="com.stackoverflow.ranjith.androidprojdel.SchedulerUI">

<android.support.v7.widget.SwitchCompat
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="switch"
        app:showText="false" />

    <Button
        android:layout_width="match_parent"
        android:text="start"
        android:id="@+id/start"
        android:layout_height="wrap_content" />
</LinearLayout>

Build.gradle:

dependencies {
    compile 'com.android.support:cardview-v7:+'
    compile 'com.android.support:recyclerview-v7:+'
    compile 'com.android.support:palette-v7:+'
    compile 'com.android.support:support-v4:+'
    compile "com.android.support:appcompat-v7:21.0.+"
    compile fileTree(dir: 'libs', include: ['*.jar'])
}

I had same problem today but somehow it switchcompat worked in my sample. I think that there is problem with app style, it parent should be set to:

Theme.AppCompat