android-room

问题 I'm trying to fetch edittext value from one activity and displaying that text in recycleview and storing using room DB.... Basically the idea is adding the address in activity address when clicks on plus it will redirect to next page where the user gets the address form onsubmit it will fetch address and add to previous activity recycleview. here is my code for room: table:--- @Entity(tableName = "address") class Address { @PrimaryKey var id = 0 @ColumnInfo(name = "address") var address:

问题 I'm trying to fetch edittext value from one activity and displaying that text in recycleview and storing using room DB.... Basically the idea is adding the address in activity address when clicks on plus it will redirect to next page where the user gets the address form onsubmit it will fetch address and add to previous activity recycleview. here is my code for room: table:--- @Entity(tableName = "address") class Address { @PrimaryKey var id = 0 @ColumnInfo(name = "address") var address:

问题 I'm trying to fetch edittext value from one activity and displaying that text in recycleview and storing using room DB.... Basically the idea is adding the address in activity address when clicks on plus it will redirect to next page where the user gets the address form onsubmit it will fetch address and add to previous activity recycleview. here is my code for room: table:--- @Entity(tableName = "address") class Address { @PrimaryKey var id = 0 @ColumnInfo(name = "address") var address:

问题 The bounty expires in 3 days . Answers to this question are eligible for a +50 reputation bounty. Wini is looking for a canonical answer . I'm trying to delete an row of recyclerview using room.im doing swipe to delete a particular row.... here is my Address table--> @Entity(tableName = "address") class Address { @PrimaryKey(autoGenerate = true) var id = 0 @ColumnInfo(name = "address") var address: String? = null } AddressDao: @Dao interface AddressDao { @Insert suspend fun addData(address:

问题 The bounty expires in 3 days . Answers to this question are eligible for a +50 reputation bounty. Wini is looking for a canonical answer . I'm trying to delete an row of recyclerview using room.im doing swipe to delete a particular row.... here is my Address table--> @Entity(tableName = "address") class Address { @PrimaryKey(autoGenerate = true) var id = 0 @ColumnInfo(name = "address") var address: String? = null } AddressDao: @Dao interface AddressDao { @Insert suspend fun addData(address:

问题 I want to save nested objects from API response into Room database so that I can retrieve them quickly next time the app is launched. The structure is the following, A root object that has fields which are themselves objects and contains some list of other objects, however all end up sharing same final object. How can I save the whole data into Room and be able to retrieve them back? Here's how it looks like: 1.Top most class: @Parcelize data class HomeResponse( @field:SerializedName("video")

问题 I want to save nested objects from API response into Room database so that I can retrieve them quickly next time the app is launched. The structure is the following, A root object that has fields which are themselves objects and contains some list of other objects, however all end up sharing same final object. How can I save the whole data into Room and be able to retrieve them back? Here's how it looks like: 1.Top most class: @Parcelize data class HomeResponse( @field:SerializedName("video")

问题 I have been try to implemented the Paging Library with Room provided by google in Android Architecture Component.But its showing compile time error in my UserDao Class Here is the Error: Error:(22, 42) error: Not sure how to convert a Cursor to this method's return type My Question is what return Type ? UserDao.java @Dao public interface UserDao { @Query("SELECT * FROM user") LiveData<List<User>> getAll(); //Compile Error is here : Not sure how to convert a Cursor to this method's return type

问题 I want to add a callback to the room database to populate initial data. @Provides @Singleton fun provideRoom(context: Context): MyRoomDatabase { return Room.databaseBuilder(context, MyRoomDatabase::class.java, "my_database") .fallbackToDestructiveMigration() .addCallback(object : RoomDatabase.Callback() { @Override override fun onCreate(db: SupportSQLiteDatabase) { super.onCreate(db) } }) .build() } For that i need the database instance in the callback to access DAO for inserting data. How

问题 I'm trying out the new coroutine's flow, my goal is to make a simple repository that can fetch data from a web api and save it to db, also return a flow from the db. I'm using room and firebase as the web api, now everything seems pretty straight forward until i try to pass errors coming from the api to the ui. Since i get a flow from the database which only contains the data and no state, what is the correct approach to give it a state (like loading, content, error) by combining it with the