[英]Add checkbox on a menu item in ActionBar
我的操作欄中有問題。 我正在嘗試在ActionBar中的菜單項上添加一個復選框,但它不起作用。 它只顯示復選框的標題。
這是我的menu.xml:
<menu xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
tools:context="com.tracking.bus.maps.SingleViewMapsActivity" >
<item
android:id="@+id/actionbar_alarm"
android:title="@string/actionbar_alarm"
app:actionViewClass="android.widget.checkbox"
app:showAsAction="ifRoom"/>
</menu>
<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android">
<!-- Checkable items appear only in submenus or context menus. -->
<!-- Carefully look at the attribute name checkableBehavior on groups, but
the attribute name checkable on items. The checkableBehavior encompasses
the number of items that will be checkable within that group. -->
<item android:title="None">
<menu>
<!-- The none checkableBehavior is default, but we explicitly show it here. -->
<group
android:id="@+id/noncheckable_group"
android:checkableBehavior="none">
<!-- Notice how these items inherit from the group. -->
<item
android:id="@+id/noncheckable_item_1"
android:title="@string/item_1" />
<item
android:id="@+id/noncheckable_item_2"
android:title="@string/item_2" />
<item
android:id="@+id/noncheckable_item_3"
android:title="@string/item_3" />
</group>
</menu>
</item>
<item android:title="All">
<menu>
<group
android:id="@+id/checkable_group"
android:checkableBehavior="all">
<!-- Notice how these items inherit from the group. -->
<item
android:id="@+id/checkable_item_1"
android:title="@string/item_1" />
<item
android:id="@+id/checkable_item_2"
android:checked="true"
android:title="@string/item_2" />
<item
android:id="@+id/checkable_item_3"
android:checked="true"
android:title="@string/item_3" />
</group>
</menu>
</item>
<item android:title="Single">
<menu>
<group
android:id="@+id/exclusive_checkable_group"
android:checkableBehavior="single">
<!-- Notice how these items inherit from the group. -->
<item
android:id="@+id/exclusive_checkable_item_1"
android:title="@string/item_1" />
<item
android:id="@+id/exclusive_checkable_item_2"
android:title="@string/item_2" />
<item
android:id="@+id/exclusive_checkable_item_3"
android:checked="true"
android:title="@string/item_3" />
</group>
</menu>
</item>
<item android:title="All without group">
<menu>
<!-- Notice how these items have each set. -->
<item
android:id="@+id/nongroup_checkable_item_1"
android:checkable="true"
android:title="@string/item_1" />
<item
android:id="@+id/nongroup_checkable_item_2"
android:checkable="true"
android:checked="true"
android:title="@string/item_2" />
<item
android:id="@+id/nongroup_checkable_item_3"
android:checkable="true"
android:checked="true"
android:title="@string/item_3" />
</menu>
</item>
</menu>
您必須使用以下屬性(取決於項目):
對於復選框: android:checkableBehavior="all"
對於單選按鈕: android:checkableBehavior="single"
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