本文实例讲述了Android ScrollView只能添加一个子控件问题解决方法。分享给大家供大家参考,具体如下:
有下面一段代码
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<? 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" >
< ScrollView
android:layout_width = "fill_parent"
android:layout_height = "fill_parent" >
< Button
android:layout_width = "fill_parent"
android:layout_height = "wrap_content" />
< Button
android:layout_width = "fill_parent"
android:layout_height = "wrap_content" />
< Button
android:layout_width = "fill_parent"
android:layout_height = "wrap_content" />
</ ScrollView >
</ LinearLayout >
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一个ScrollView里面添加了三个Button,也许你认为没有什么问题,那么我们运行一下看看
出现了一个异常
很明显,异常告诉我们ScrollView can host only one direct child
既然说只能容纳一个直接的子控件,那么我们就可以容纳多个间接的子控件,直接在这些子控件外面再套一层LinearLayout就OK了
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<? 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" >
< ScrollView
android:layout_width = "fill_parent"
android:layout_height = "fill_parent" >
< LinearLayout
android:layout_width = "fill_parent"
android:layout_height = "fill_parent"
android:orientation = "vertical" >
< Button
android:layout_width = "fill_parent"
android:layout_height = "wrap_content" />
< Button
android:layout_width = "fill_parent"
android:layout_height = "wrap_content" />
< Button
android:layout_width = "fill_parent"
android:layout_height = "wrap_content" />
</ LinearLayout >
</ ScrollView >
</ LinearLayout >
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希望本文所述对大家Android程序设计有所帮助。