我在tableOut中显示了一个listView的片段:
<android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@color/backgroundColor"
android:fitsSystemWindows="true"
tools:context=".activities.fragments.OrdersFragment">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<ListView
android:id="@+id/orderListView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:divider="@color/colorPrimaryDark"
android:dividerHeight="1px" />
</RelativeLayout>
</android.support.design.widget.CoordinatorLayout>
此listView的项目具有以下布局:
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="@+id/order_list_order"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:padding="5dp">
<ImageView
android:id="@+id/arrowView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentEnd="true"
android:layout_alignParentRight="true"
android:layout_centerVertical="true"
android:layout_weight="1"
app:srcCompat="@drawable/ic_downarrow" />
<LinearLayout
android:id="@+id/previewLayout"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical">
<TextView
android:id="@+id/order_list_storename"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:gravity="center_vertical"
android:text="Store Name"
android:textColor="@color/generalText"
android:textSize="24sp" />
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal">
some textview here
</LinearLayout>
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal">
some textview here
</LinearLayout>
</LinearLayout>
<LinearLayout
android:id="@+id/extensionLayout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="@+id/previewLayout"
android:visibility="visible">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Produkte:"
android:textColor="@color/generalText"
android:textSize="18sp"/>
<ListView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:entries="@array/exampleArray"/>
</LinearLayout>
</RelativeLayout>
这些项目都有一个listView,其exkearRay作为项目:
<string-array name="exampleArray">
<item>Donut</item>
<item>Pizza</item>
<item>blabla</item>
</string-array>
我的问题是,仅显示此内部列表视图的第一个元素。另外,外部列表视图不再可单击。有人知道为什么是这种情况吗?我做错了吗?
在另一个可滚动视图中放置可滚动视图不是一个好主意。尝试使用getItemViewType方法来解决问题。
如果您没有其他选择,则必须测量内部ListView
高度。这样,所有项目都将同时夸大,您无法利用recycle
的 ListView
属性。
测量内部ListView
使用此方法
/**** Method for Setting the Height of the ListView dynamically.
**** Hack to fix the issue of not showing all the items of the ListView
**** when placed inside a ScrollView ****/
public static void setListViewHeightBasedOnChildren(ListView listView) {
ListAdapter listAdapter = listView.getAdapter();
if (listAdapter == null)
return;
int desiredWidth = MeasureSpec.makeMeasureSpec(listView.getWidth(), MeasureSpec.UNSPECIFIED);
int totalHeight = 0;
View view = null;
for (int i = 0; i < listAdapter.getCount(); i++) {
view = listAdapter.getView(i, view, listView);
if (i == 0)
view.setLayoutParams(new ViewGroup.LayoutParams(desiredWidth, LayoutParams.WRAP_CONTENT));
view.measure(desiredWidth, MeasureSpec.UNSPECIFIED);
totalHeight += view.getMeasuredHeight();
}
ViewGroup.LayoutParams params = listView.getLayoutParams();
params.height = totalHeight + (listView.getDividerHeight() * (listAdapter.getCount() - 1));
listView.setLayoutParams(params);
listView.requestLayout();
}
用法:
setListViewHeightBasedOnChildren(listView)
这样,您内部LisView
将丢失recycle
属性。
还有其他问题,您也可以检查这些问题,
检查此
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent">//changed here
<ListView
android:id="@+id/orderListView"
android:layout_width="match_parent"
android:layout_height="match_parent"//and here
android:divider="@color/colorPrimaryDark"
android:dividerHeight="1px" />
</RelativeLayout>
请与'listView'一起使用'match_parent'