1. 程式人生 > >ScrollView不能包含多個子項,ScrollView can host only one direct child

ScrollView不能包含多個子項,ScrollView can host only one direct child

Android 2.3.3
Eclipse Version: 3.7.0
LogCat

 LogCat  報錯資訊:

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  

發生錯誤原因分析:

ScrollView僅支援一個子項。

檢視對應的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>

發現ScrollView中有兩個TextView子項。

解決辦法:

在ScrollView 中設LinearLayout為子項 ,將其它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。在編輯layout xml時應注意“Error Log”視窗與layout xml編輯視窗的“Graphical Layout”選項卡。