LiveDataã‚’Observeã™ã‚‹éš›ã®æ³¨æ„点 - Qiitaclass FirstViewModel: ViewModel() { // 外ã‹ã‚‰å€¤ã‚’æµã›ãªã„よã†ã«ã™ã‚‹ãŸã‚ã«ã€mutableLiveDataã¯ã‚¢ã‚¯ã‚»ã‚¹ä¿®é£¾åã‚’privateã«ã—ã¦ã„る。 private val mutableLiveData = MutableLiveData<String>)() val liveData: LiveData<String> = mutableLiveData fun tappedButton() { mutableLiveData.value = "Tapped Button!!" } } class FirstFragment : Fragment() { private val viewModel: FirstViewModel by lazy { ViewModelProvider.NewInstanceFactory().create(Fir
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