如何在MultiSelectList preference设置多个默认值？ [英] How to set multiple default values in a MultiSelectListPreference?

问题描述

我有preference.xml这样

I have preference.xml like this

<MultiSelectListPreference
        android:key="store_select"
        android:title="@string/setting_store_title"
        android:summary="@string/setting_store_summary"
        android:dialogTitle="@string/setting_store_dialog_title"
        android:entries="@array/store_names"
        android:entryValues="@array/stores"
        android:defaultValue="@array/stores"
        />

我的两个数组：

    <string-array name="stores">
    <item>1</item>
    <item>2</item>
    <item>3</item>
    <item>4</item>
    <item>5</item>
</string-array>

<string-array name="store_names">
    <item>foodbasics</item>
    <item>nofrills</item>
    <item>metro</item>
    <item>loblaws</item>
    <item>sobeys</item>
</string-array>

我想要的默认行为是所有的选择的选项，但目前没有被默认选中。难道我做错了什么？

I want the default behaviour to be all of the options selected, but currently nothing is selected by default. Am I doing something wrong?

推荐答案

要做出默认选择（上）均 MultiSelectList preference 项目，则包括属性 defaultsValue 为preference，例如：

To make all MultiSelectListPreference items selected (on) by default, then include the attribute defaultsValue for the Preference, e.g.

android:defaultValue="@array/stores"

如果它不工作，然后确保你明确的机应用的数据，因为这只会影响在第一次运行应用程序。

If it's not working, then make sure that you clear the appliction data as this will only take effect the first time the application is run.

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