android XML视图不在Eclipse中显示ToggleButton

Question

在我的Android XML图形布局中,我无法显示我的ToggleButton.我收到一些错误(见下文).此外,我无法使用图形布局编辑任何其他内容.

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context="com.thunder4apps.lanterna.corinthians.MainActivity" >



    <ToggleButton 
    android:id="@+id/togglebutton"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:textOn="Vibrate on"
    android:textOff="Vibrate off"
    android:onClick="onToggleClicked"/>


</RelativeLayout>

错误:

Exception raised during rendering: -1
Exception details are logged in Window > Show View > Error LogThe graphics preview in the layout editor may not be accurate:
Different corner sizes are not supported in Path.addRoundRect. (Ignore for this session)
Path.isConvex is not supported. (Ignore for this session)

Answer 1

转到您的图形布局并找到API级别的下拉菜单,可能您正在使用最后一个21,并且您没有安装它,根据您的应用程序更改为其他控制杆.