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需求 ：界面內容太多，為了方便查看，就在linearlayout添加scrollview

?eg:

???<?xml?version="1.0"?encoding="utf-8"?>???

?????<LinearLayout??

????????xmlns:android="http://schemas.android.com/apk/res/android"??

????????xmlns:tools="http://schemas.android.com/tools"??

????????android:orientation="vertical"??

????????android:layout_width="fill_parent"??

????????android:layout_height="fill_parent"??

????????tools:context=".MainActivity">??

?</LinearLayout>?

---------------添加滾動后-------------------------------------------------------------------

<?xml?version="1.0"?encoding="utf-8"?>???

<ScrollView????

????????xmlns:android="http://schemas.android.com/apk/res/android"??

????????xmlns:tools="http://schemas.android.com/tools"??

????????android:layout_width="fill_parent"????

???????android:layout_height="fill_parent"????

???????android:scrollbars="vertical"????

????????android:fadingEdge="vertical">??

????<LinearLayout??

????????xmlns:android="http://schemas.android.com/apk/res/android"??

????????xmlns:tools="http://schemas.android.com/tools"??

????????android:orientation="vertical"??

????????android:layout_width="fill_parent"??

????????android:layout_height="fill_parent"??

????????tools:context=".MainActivity">??

????</LinearLayout>??

</ScrollView>??

----------------------異常---------------------------------------------------------------

Unexpected namespace prefix "xmlns" found for tag LinearLayout
----------------------解決方法-----------------------------------------------------------

xmlns:android="http://schemas.android.com/apk/res/android"??必須作為第一個節點的屬性，于是把LinearLayout的xmlns:android和xmlns:tools這兩個屬性去掉就可以了

----------------------結果---------------------------------------------------------------

? xmlns:android="http://schemas.android.com/apk/res/android"

<?xml?version="1.0"?encoding="utf-8"?>???

???<ScrollView????

???????????xmlns:android="http://schemas.android.com/apk/res/android"??

????????????xmlns:tools="http://schemas.android.com/tools"??

?????????????android:layout_width="fill_parent"????

?????????????android:layout_height="fill_parent"????

?????????????android:scrollbars="vertical"????

??????????????android:fadingEdge="vertical">??

????????<LinearLayout??

??????????????android:orientation="vertical"??

??????????????android:layout_width="fill_parent"??

?????????????android:layout_height="fill_parent"??

??????????????tools:context=".MainActivity">??

?????</LinearLayout>??

????</ScrollView>??

轉載于:https://my.oschina.net/u/1792000/blog/361531

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