小编Mil*_*iya的帖子

找不到属性app:useSimpleSummaryProvider

我想更新我的首选项摘要,在这里找到了一个名为SimpleSummaryProvider的东西。但就我而言,这是指找不到属性,app:useSimpleSummaryProvider而在Java代码中,则是无法解析SummaryProvider类。我的应用程序级别构建Gradle依赖项为-

implementation fileTree(include: ['*.jar'], dir: 'libs')
implementation 'com.android.support:appcompat-v7:28.0.0'
androidTestImplementation 'junit:junit:4.12'
androidTestImplementation 'com.android.support:support-annotations:28.0.0'
androidTestImplementation 'com.android.support.test:runner:1.0.2'
androidTestImplementation 'com.android.support.test:rules:1.0.2'
implementation 'com.android.support:recyclerview-v7:28.0.0'
implementation 'com.android.support.constraint:constraint-layout:1.1.3'
implementation 'com.android.support:design:28.0.0'
implementation 'com.android.support:preference-v7:28.0.0'
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我不知道我是否想念什么。我将不胜感激

android android-preferences build.gradle

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