我试图在listView上使用marginBottom来使listView项目之间的空间，但项目仍然附加在一起。
这可能吗?如果有，有具体的方法吗?
我的代码如下
<LinearLayout
android:id="@+id/alarm_occurences"
android:layout_width="fill_parent"
android:orientation="vertical"
android:layout_height="fill_parent"
android:background="#EEEEFF"
xmlns:android="http://schemas.android.com/apk/res/android">
<ListView
android:id="@+id/occurences"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
/>
</LinearLayout>
我的自定义列表项:
<com.android.alarm.listItems.AlarmListItem
xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="@drawable/alarm_item_background"
android:layout_marginBottom="10dp"
>
<CheckedTextView
android:id="@android:id/text1"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:gravity="center_vertical"
android:checkMark="?android:attr/listChoiceIndicatorMultiple"
android:textSize="20sp"
android:textStyle="bold"
android:typeface="serif"
android:padding="10dp"
/>
</com.android.alarm.listItems.AlarmListItem>
在这种情况下，我如何使列表项之间的间距?
我的解决方案是增加更多的空间，但保持水平线，在res/drawable文件夹中添加separator .xml，并在其中定义线的形状:
divider.xml
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="line" >
<stroke
android:width="1px"
android:color="@color/nice_blue" />
</shape>
然后在我的列表中引用我的分隔符如下:
<ListView
android:id="@+id/listViewScheduledReminders"
android:layout_width="match_parent"
android:layout_height="0dip"
android:layout_marginBottom="@dimen/mediumMargin"
android:layout_weight="1"
android:divider="@drawable/divider"
android:dividerHeight="16.0dp"
android:padding="@dimen/smallMargin" >
</ListView>
注意android:dividerHeight="16.0dp"通过增加和减少这个高度，我基本上是在分隔线的顶部和底部添加了更多的填充。
我使用这个页面作为参考:http://developer.android.com/guide/topics/resources/drawable-resource.html#stroke-element
如果你想显示一个带边距的分隔符，而不拉伸它-使用InsetDrawable(大小必须是一种格式，关于它说@Nik Reiman):
ListView:
<ListView
android:id="@+id/listView"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:cacheColorHint="#00000000"
android:divider="@drawable/separator_line"
android:dividerHeight="10.0px"/>
@drawable / separator_line:
<?xml version="1.0" encoding="utf-8"?>
<inset xmlns:android="http://schemas.android.com/apk/res/android"
android:insetLeft="5.0px"
android:insetRight="5.0px"
android:insetTop="8.0px"
android:insetBottom="8.0px">
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle">
<gradient
android:startColor="@color/colorStart"
android:centerColor="@color/colorCenter"
android:endColor="@color/colorEnd"
android:type="linear"
android:angle="0">
</gradient>
</shape>
</inset>
Although the solution by Nik Reiman DOES work, I found it not to be an optimal solution for what I wanted to do. Using the divider to set the margins had the problem that the divider will no longer be visible so you can not use it to show a clear boundary between your items. Also, it does not add more "clickable area" to each item thus if you want to make your items clickable and your items are thin, it will be very hard for anyone to click on an item as the height added by the divider is not part of an item.
幸运的是，我找到了一个更好的解决方案，既可以显示分隔符，又可以使用空白来调整每个项目的高度。这里有一个例子:
列表视图
<ListView
android:id="@+id/listView"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
/>
ListItem
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="10dp"
android:paddingTop="10dp" >
<TextView
android:id="@+id/textView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:text="Item"
android:textAppearance="?android:attr/textAppearanceSmall" />
</RelativeLayout>
