小编apj*_*123的帖子

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: Address)

@Query("select * from address")
fun getAddressesWithChanges() :LiveData<MutableList<Address>>

@Query("SELECT EXISTS (SELECT 1 FROM address WHERE id=:id)")
suspend fun isAddressAdded(id: Int): Int

@Delete
suspend fun delete(address: Address)
  } …

我的数据仅在创建时才获取...我使用视图模型...当按后退按钮时，它不会更新以前的数据..onresume 在此不起作用...

我引用了这个，但这些都没有帮助-->对 ViewModel 中的活动生命周期做出反应

我需要帮助

提前致谢

活动： -

class MyAccount : BaseClassActivity() {

override fun onCreate(savedInstanceState: Bundle?) {
    super.onCreate(savedInstanceState)
    setContentView(R.layout.myaccount)



    var mActionBarToolbar = findViewById<androidx.appcompat.widget.Toolbar>(R.id.toolbartable);
    setSupportActionBar(mActionBarToolbar);
  setEnabledTitle()


    val resetbutton=findViewById<Button>(R.id.resetpwd)
    resetbutton.setOnClickListener {
        val i=Intent(applicationContext,
            ResetPasswordActivity::class.java)
        startActivity(i)
    }
    val editbutton=findViewById<Button>(R.id.editdetail)
    editbutton.setOnClickListener {
        val i=Intent(applicationContext, EditProfile::class.java)
        startActivity(i)
    }

  hello()
}

override fun onResume() {
    super.onResume()
  hello()

}

fun hello(){
    val first_name = findViewById<TextView>(R.id.firstname)
    val last_name = findViewById<TextView>(R.id.lastname)
    val emailuser = findViewById<TextView>(R.id.emailuser)
    val phone_no = findViewById<TextView>(R.id.phone_no)
    val birthday = findViewById<TextView>(R.id.birthday)
    val image=findViewById<ImageView>(R.id.imageprofile)


    val …