在android中使用ON/OFF开关时发生错误

Question

我想要一个在我的应用程序中提到的开/关开关。但我的布局在设计交换机时出错，如下所示<Switch android:textOn="ON" android:textOff="OFF" android:layout_width="wrap_content" android:layout_height="wrap_content"/>

我得到的错误是

`ENTRY com.android.ide.eclipse.adt 4 0 2012-07-12 16:33:07.619
!MESSAGE main.xml: Failed to find style 'switchStyle' in current theme
!ENTRY com.android.ide.eclipse.adt 4 0 2012-07-12 16:33:07.620
!MESSAGE main.xml: Failed to find style 'switchStyle' in current theme
!ENTRY com.android.ide.eclipse.adt 4 0 2012-07-12 16:33:07.620
!MESSAGE main.xml: Failed to find style 'switchStyle' in current theme

!ENTRY com.android.ide.eclipse.adt 4 0 2012-07-12 16:33:07.621
!MESSAGE main.xml: Failed to find style 'switchStyle' in current theme

!ENTRY com.android.ide.eclipse.adt 4 0 2012-07-12 16:33:07.622
!MESSAGE main.xml: Failed to find style 'switchStyle' in current theme

!ENTRY com.android.ide.eclipse.adt 4 0 2012-07-12 16:33:07.622
!MESSAGE main.xml: Failed to find style 'switchStyle' in current theme

!ENTRY com.android.ide.eclipse.adt 2 0 2012-07-12 16:33:07.637
!MESSAGE main.xml: You must supply a layout_width attribute.

!ENTRY com.android.ide.eclipse.adt 2 0 2012-07-12 16:33:07.638
!MESSAGE main.xml: You must supply a layout_height attribute.

我的xml文件。

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical" >
<Switch
    android:textOn="ON"
    android:textOff="OFF"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    />
</LinearLayout>

Answer 1

Switch小部件是在api级别14中添加的。确保您在AndroidManifest.xml 中设置了android:minSdkVersion="14"