ScrollView不能包含多个子项，ScrollView can host only one direct child

http://debuglog.iteye.com/blog/1441828

ScrollView不能包含多个子项，ScrollView can host only one direct child

博客分类：

 
• Android
• Eclipse

JavaAndroidEclipseScrollViewIllegalStateException

Android 2.3.3
Eclipse Version: 3.7.0
LogCat

 LogCat  报错信息：

03-06 11:32:11.126: ERROR/AndroidRuntime(17173): Caused by: java.lang.IllegalStateException: ScrollView can host only one direct child
03-06 11:32:11.126: ERROR/AndroidRuntime(17173): at android.widget.ScrollView.addView(ScrollView.java:229)
03-06 11:32:11.126: ERROR/AndroidRuntime(17173): at android.view.LayoutInflater.rInflate(LayoutInflater.java:627)
03-06 11:32:11.126: ERROR/AndroidRuntime(17173): at android.view.LayoutInflater.rInflate(LayoutInflater.java:626)
03-06 11:32:11.126: ERROR/AndroidRuntime(17173): at android.view.LayoutInflater.inflate(LayoutInflater.java:408)
03-06 11:32:11.126: ERROR/AndroidRuntime(17173): at android.view.LayoutInflater.inflate(LayoutInflater.java:320)
03-06 11:32:11.126: ERROR/AndroidRuntime(17173): at android.view.LayoutInflater.inflate(LayoutInflater.java:276)
03-06 11:32:11.126: ERROR/AndroidRuntime(17173): at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:207)
03-06 11:32:11.126: ERROR/AndroidRuntime(17173): at android.app.Activity.setContentView(Activity.java:1657)
03-06 11:32:11.126: ERROR/AndroidRuntime(17173): at com.tmall.nokia.manage.CopyRight.onResume(CopyRight.java:50)
03-06 11:32:11.126: ERROR/AndroidRuntime(17173): at android.app.Instrumentation.callActivityOnResume(Instrumentation.java:1150)
03-06 11:32:11.126: ERROR/AndroidRuntime(17173): at android.app.Activity.performResume(Activity.java:3832)
03-06 11:32:11.126: ERROR/AndroidRuntime(17173): at android.app.ActivityThread.performResumeActivity(ActivityThread.java:2110)
03-06 11:32:11.126: ERROR/AndroidRuntime(17173): ... 12 more

发生错误原因分析：

ScrollView仅支持一个子项。

查看对应的layout xml

<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent" android:layout_height="wrap_content"
    android:scrollbars="vertical">
    <TextView android:id="@+id/nokia" android:layout_gravity="center"
        android:layout_width="fill_parent" android:layout_height="wrap_content"
        android:textAppearance="?android:attr/textAppearanceMedium"
        android:text="@string/text_nokia"></TextView>
    <TextView android:id="@+id/iphone4s" android:layout_gravity="center"
        android:layout_width="wrap_content" android:layout_height="wrap_content"
        android:text="@string/text_iphone4s"></TextView>
</ScrollView>

发现ScrollView中有两个TextView子项。

解决办法：

在ScrollView 中设LinearLayout为子项 ，将其它View放入LinearLayout。

<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent" android:layout_height="wrap_content"
    android:scrollbars="vertical">
    <LinearLayout android:id="@+id/tmall"
        android:layout_width="fill_parent" android:layout_height="wrap_content"
        android:orientation="vertical">
        <TextView android:id="@+id/nokia" android:layout_gravity="center"
            android:layout_width="fill_parent" android:layout_height="wrap_content"
            android:textAppearance="?android:attr/textAppearanceMedium"
            android:text="@string/text_nokia"></TextView>
        <TextView android:id="@+id/iphone4s" android:layout_gravity="center"
            android:layout_width="wrap_content" android:layout_height="wrap_content"
            android:text="@string/text_iphone4s"></TextView>
    </LinearLayout>
</ScrollView>

 PS。在编辑layout xml时应注意“Error Log”窗口与layout xml编辑窗口的“Graphical Layout”选项卡。