PreferenceFragmentCompat需要设置preferenceTheme

Question

使用v7首选项支持库中的新PreferenceFragmentCompat:http://developer.android.com/tools/support-library/features.html#v7-preference,我收到此错误

E  java.lang.IllegalStateException: Must specify preferenceTheme in theme
E      at android.support.v7.preference.PreferenceFragmentCompat.onCreate(PreferenceFragmentCompat.java:202)

应该设置什么主题？

更新:我尝试过使用

<item name="preferenceTheme">@style/PreferenceThemeOverlay</item>

正如@Bogato所建议的那样,它看起来并不正确,即使在Lollipop上也看起来非常Holo.

支持库:

原生偏好:

Answer 1

The sample project can be found here

The bugfix is available as a gradle dependency

Now one can use the library pretty easy. Here are quickest way to do so, but you should check out the README for more info.

1. Update your module's gradle file:

compile 'com.takisoft.fix:preference-v7:27.0.0.0'

2. Use the appropriate class as your fragment's base

You can use either PreferenceFragmentCompat or PreferenceFragmentCompatDividers.

(Watch out for the appropriate package name when importing PreferenceFragmentCompat!)

3. Use the appropriate theme

Set your containing Activity's theme to a variant of @style/PreferenceFixTheme, like NoActionBar, Light, etc.

For more info and usage tips, go to the project's page.

PS在本节中,您可以找到导致创建库的详细解决方案,但我决定将其删除,因为它可能会令人困惑.如果您对这些步骤感到好奇,您仍然可以在此答案的修订历史中找到它们.

Answer 2

您必须在首选项活动的主题中指定preferenceTheme.

例如 :

<style name="SettingsTheme" parent="Theme.AppCompat.NoActionBar">
    <item name="preferenceTheme">@style/PreferenceThemeOverlay</item>
</style>

PreferenceThemeOverlay是preference-v7支持库附带的默认主题.

Answer 3

似乎谷歌解决了这个问题.我用偏好v14-support版本25.3.1测试了这个

1)添加implementation 'com.android.support:preference-v14:25.3.1'到Gradle.

2)添加PreferenceThemeOverlay.v14.Material到样式而不是PreferenceThemeOverlay.

<style name="AppTheme.SettingsTheme" parent="AppTheme.NoActionBar">
    <item name="preferenceTheme">@style/PreferenceThemeOverlay.v14.Material</item>
</style>

3)最后,将样式添加到Manifest

android:theme="@style/AppTheme.SettingsTheme"

Answer 4

要使用PreferenceFragmentCompat,您必须preferenceTheme在主题中进行设置:

<style name="AppTheme" parent="@style/Theme.AppCompat.Light">
  ...
  <item name="preferenceTheme">@style/PreferenceThemeOverlay</item>
</style>

通过这种方式,您可以自定义preferenceTheme用于为每种首选项类型设置的布局样式,而不会影响Activity的其他部分.

Answer 5

我刚刚在主题中添加了这一行,它在API 19及更高版本上运行完美.

<item name="preferenceTheme">@style/PreferenceThemeOverlay.v14.Material</item>