LiveDataReactiveStreams 到 MutableLiveData
LiveDataReactiveStreams to MutableLiveData
如何将值从 LiveDataReactiveStreams 发布到 MutableLiveData?我想实现到 Switch(视图)的双向数据绑定,并将 "checked" 值从数据库传递到 MutableLiveData 以及从 UI 传递。
LiveDAtaReactiveStreams returns 仅不可变 LiveData。
//ViewModel
public final MutableLiveData<Boolean> switchChecked = new MutableLiveData<>();
LiveData<Boolean> data = LiveDataReactiveStreams.fromPublisher(/* Flowable from DB */); //??
//xml
<Switch
...
android:checked="@={viewModel.switchChecked}"
/>
尝试MediatorLiveData
//ViewModel
public final MediatorLiveData<Boolean> switchChecked = new MediatorLiveData<>();
public MyViewModel() {
...
switchChecked.addSource(LiveDataReactiveStreams.fromPublisher(/* Flowable from DB */), value -> {
switchChecked.setValue(value);
});
...
}
如何将值从 LiveDataReactiveStreams 发布到 MutableLiveData?我想实现到 Switch(视图)的双向数据绑定,并将 "checked" 值从数据库传递到 MutableLiveData 以及从 UI 传递。 LiveDAtaReactiveStreams returns 仅不可变 LiveData。
//ViewModel
public final MutableLiveData<Boolean> switchChecked = new MutableLiveData<>();
LiveData<Boolean> data = LiveDataReactiveStreams.fromPublisher(/* Flowable from DB */); //??
//xml
<Switch
...
android:checked="@={viewModel.switchChecked}"
/>
尝试MediatorLiveData
//ViewModel
public final MediatorLiveData<Boolean> switchChecked = new MediatorLiveData<>();
public MyViewModel() {
...
switchChecked.addSource(LiveDataReactiveStreams.fromPublisher(/* Flowable from DB */), value -> {
switchChecked.setValue(value);
});
...
}