Sudden compile error in Android Studio; error: cannot find symbol class ComputableLiveData

Question

我打开了我的项目并编译并运行它，但出现了标题中提到的错误，error: cannot find symbol class ComputableLiveData。我在 SQLite 上使用 Room 抽象构建了一个本地数据库，错误发生在 BundleDao_Impl.java.

package com.weaberlumber.programmer.s4s_scan;

import android.arch.lifecycle.ComputableLiveData; //The error is here
import android.arch.lifecycle.LiveData;
import android.arch.persistence.db.SupportSQLiteStatement;
import android.arch.persistence.room.EntityDeletionOrUpdateAdapter;
import android.arch.persistence.room.EntityInsertionAdapter;
import android.arch.persistence.room.InvalidationTracker.Observer;
import android.arch.persistence.room.RoomDatabase;
import android.arch.persistence.room.RoomSQLiteQuery;
import android.arch.persistence.room.util.StringUtil;

我试过删除构建文件夹以便重新生成文件，但没有成功。

Answer 1

已通过将以下实现添加到 build.gradle（模块：app）

下的依赖项来修复此问题

    implementation 'android.arch.lifecycle:livedata:1.1.1'

Sudden compile error in Android Studio; error: cannot find symbol class ComputableLiveData

Sudden compile error in Android Studio; error: cannot find symbol class ComputableLiveData

java

sqlite

android

android-room