创建项目的room数据已完成

创建景区的表结构已完成

app/build.gradle

@@ -188,5 +188,13 @@ dependencies {
     implementation(name: 'BaiduLBS_AndroidSDK_Lib', ext: 'aar')
 
 
+    //room数据库
+    def room_version = "2.3.0"
+    implementation("androidx.room:room-runtime:$room_version")
+    annotationProcessor "androidx.room:room-compiler:$room_version"
+    // optional - Kotlin Extensions and Coroutines support for Room
+    implementation("androidx.room:room-ktx:$room_version")
+    // optional - Test helpers
+    testImplementation("androidx.room:room-testing:$room_version")
 
 }
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app/src/main/java/db/AppDatabase.kt

+package db
+
+import androidx.room.Database
+import androidx.room.Room
+import androidx.room.RoomDatabase
+import me.goldze.mvvmhabit.utils.Utils
+
+/**
+ * Created by 冯瑞雨 on 2021/7/20.
+ */
+@Database(entities = [ScenicSpotBean::class], version = 1)
+abstract class AppDatabase : RoomDatabase() {
+    abstract fun userDao(): ScenicSpotDao
+
+    companion object {
+        private var _instance: AppDatabase? = null
+        @JvmStatic
+        fun instance(): AppDatabase {
+            if (_instance == null) {
+                synchronized(AppDatabase::class.java) {
+                    if (_instance == null) {
+                        _instance = Room.databaseBuilder(
+                            Utils.getContext()
+                            , AppDatabase::class.java
+                            , "mints_room.db")
+                            .allowMainThreadQueries()//设置是否允许在主线程做查询操作
+                            //.fallbackToDestructiveMigration()//设置迁移数据库如果发生错误，将会重新创建数据库，而不是发生崩溃
+                            .build()
+                    }
+                }
+            }
+            return _instance!!
+        }
+    }
+}
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app/src/main/java/db/ScenicSpotDao.kt

+package db
+
+import androidx.room.Dao
+import androidx.room.Query
+import java.util.*
+
+/**
+ * Created by 冯瑞雨 on 2021/7/20.
+ */
+@Dao
+interface ScenicSpotDao {
+    @Query("SELECT * FROM scenic_spot")
+    fun getAll(): List<ScenicSpotBean>
+}
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app/src/main/java/db/TableBean.kt

+package db
+
+import androidx.room.Entity
+import androidx.room.PrimaryKey
+import java.util.*
+
+/**
+ * Created by 冯瑞雨 on 2021/7/20.
+ * 景区表
+ */
+@Entity(tableName = "scenic_spot")
+class ScenicSpotBean(
+    //主键 自增
+    @PrimaryKey(autoGenerate = true) var id: Int = 0,
+    //景区 类型 1=境内热门景区 2=境内免费专区 3=首页的景区
+    var type :Int = 0,
+    //景区 经度
+    var longitude :Double?=null,
+    //景区 纬度
+    var latitude :Double?=null,
+    //景区 名称
+    var name :String? = null,
+    //景区 图片
+    var images : List<String>? = null
+)
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