android room latest version

dependencies { def room_version = "2.2.5" implementation "androidx.room:room-runtime:$room_version" annotationProcessor "androidx.room:room-compiler:$room_version" // For Kotlin use kapt instead of annotationProcessor // optional - Kotlin Extensions and Coroutines support for Room implementation "androidx.room:room-ktx:$room_version" // optional - RxJava support for Room implementation "androidx.room:room-rxjava2:$room_version" // optional - Guava support for Room, including Optional and ListenableFuture implementation "androidx.room:room-guava:$room_version" // Test helpers testImplementation "androidx.room:room-testing:$room_version" }

Room kotlin

// Annotates class to be a Room Database with a table (entity) of the Word class
@Database(entities = arrayOf(Word::class), version = 1, exportSchema = false)
public abstract class WordRoomDatabase : RoomDatabase() {

   abstract fun wordDao(): WordDao

   companion object {
        // Singleton prevents multiple instances of database opening at the
        // same time. 
        @Volatile
        private var INSTANCE: WordRoomDatabase? = null

        fun getDatabase(context: Context): WordRoomDatabase {
            val tempInstance = INSTANCE
            if (tempInstance != null) {
                return tempInstance
            }
            synchronized(this) {
                val instance = Room.databaseBuilder(
                        context.applicationContext,
                        WordRoomDatabase::class.java, 
                        "word_database"
                    ).build()
                INSTANCE = instance
                return instance
            }
        }
   }
}

Posted by: Guest on June-22-2020

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