pear

android studio 최초 설치 후 구버전 Project를 Load시 Gardle Sync를 성공하였지만 Build를 할수 없는 상태에서 오류를 찾다가 Run -> Edit Configurations에서 module not specified 오류가 발견 되는 경우가 있다. 방법1 Buidl.gadle 을 설치된 버전으로 변경. compileSdkVersion buildToolsVersion 방법2 Tool -> SDK Manager -> andorid SDK Project에서 설정한 buildToolsVersion 버전 설치 한다

simple data binding https://developer.android.com/jetpack/androidx/releases/databinding gradle android { ... buildFeatures { dataBinding true } } Activity //connect activity & binding & viewmodel class NameActivity : AppCompatActivity() { private val viewModel: ViewModel by viewModels() //auto generate ActivityNameBinding private lateinit var binding : ActivityNameBinding override fun onCreate(s..

ViewModel class ViewModel() : ViewModel() { //EditText support String simple private val _text = MutableLiveData(String) val text: LiveData = _text //EditText not support Int need BindingAdapter private val _num = MutableLiveData(String) val num: LiveData = _num layout