android - 为什么来自 Kotlin May 的新 LiveData 构建器更新在我的项目中不起作用
问题描述
这是我的依赖项:
//Room and Lifecycle Libraries
kapt "androidx.room:room-compiler:2.2.0-alpha02"
kapt 'androidx.room:room-compiler:2.2.0-alpha02'
kapt "androidx.lifecycle:lifecycle-compiler:2.2.0-alpha03"
implementation "androidx.room:room-runtime:2.2.0-alpha02"
implementation 'androidx.room:room-runtime:2.2.0-alpha02'
implementation "androidx.lifecycle:lifecycle-viewmodel:2.2.0-alpha03"
implementation "androidx.lifecycle:lifecycle-extensions:2.2.0-alpha03"
implementation "androidx.lifecycle:lifecycle-viewmodel-ktx:2.2.0-alpha03"
implementation "androidx.lifecycle:lifecycle-viewmodel-savedstate:1.0.0-alpha03"
implementation 'com.jakewharton.retrofit:retrofit2-kotlin-coroutines-adapter:0.9.2'
如您所见,我实现了最终版本,但我无权访问 liveData 构建器。我怎样才能解决这个问题?
解决方案
从文档中:
对于
liveData
,使用androidx.lifecycle:lifecycle-livedata-ktx:2.2.0-alpha01
或更高。
所以你只是缺少依赖:
implementation "androidx.lifecycle:lifecycle-livedata-ktx:2.2.0-alpha03"