我试图包括一个ScrollView (upgrade_content.xml)包含一个ListView在我的活动的XML布局文件(upgrade . XML)。当我使用<include layout="@layout/upgrades_content"/>
包括外部文件时,我得到一个RuntimeException消息"你必须提供一个layout_width属性"。
如果我从upgrade_content.xml中复制代码并将其直接粘贴到upgrade .xml中,它会正常工作。
upgrades.xml(这会引发异常):
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/upgrades_layout"
android:layout_width="fill_parent"
android:layout_height="match_parent"
android:gravity="center_vertical"
android:background="@drawable/menu_screen_bg"
android:orientation="vertical">
<include layout="@layout/upgrades_content"/>
</LinearLayout>
upgrades_content.xml:
<?xml version="1.0" encoding="utf-8"?>
<ScrollView
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:fillViewport="true"
android:layout_weight="1">
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:gravity="center_horizontal">
<!-- Activity Title -->
<RelativeLayout
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:paddingTop="10dp">
<TextView
android:id="@+id/upgrades_title_text"
android:text="@string/upgrade_store_string"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:textSize="@dimen/TitleTextSize"
style="@style/ActivityTitleTextStyle" />
</RelativeLayout>
<!-- Upgrades List -->
<LinearLayout
android:background="@drawable/old_paper_bg"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical"
android:layout_gravity="center_horizontal"
android:layout_marginLeft="@dimen/OldPaperScrollViewMargin"
android:layout_marginRight="@dimen/OldPaperScrollViewMargin"
android:layout_marginBottom="@dimen/OldPaperScrollViewMargin"
android:padding="@dimen/OldPaperScrollViewPadding">
<ListView
android:id="@android:id/list"
android:layout_width="wrap_content"
android:layout_height="fill_parent">
</ListView>
</LinearLayout>
</LinearLayout>
</ScrollView>
UpgradeActivity.java:
public class UpgradeActivity extends ListActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.upgrades);
setListAdapter(ArrayAdapter.createFromResource(this,
R.array.upgrade_string_array,
R.layout.upgrade_layout_list_item));
}
}
upgrade_layout_list_item.xml:
<?xml version="1.0" encoding="utf-8"?>
<TextView
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:textSize="@dimen/LabelTextSize" />
编辑:这段代码抛出的RuntimeException不会导致强制关闭,所以我设置Eclipse捕获的异常可能有点太随意了。
尝试在<include>
标签下指定upgrade.xml
中的布局高度和宽度,如下所示:
<include
layout="@layout/upgrades_content"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
/>
将宽度和高度值设置为您需要的任何值:fill_parent
或wrap_content