android - 如何处理警告:Unchecked call to 'ObservableField(T)' as a member of raw type 'android.databinding.ObservableField'

Question

以下代码:

public ObservableField ofFoo = new ObservableField("");

生成以下警告:

Unchecked call to 'ObservableField(T)' as a member of raw type 'android.databinding.ObservableField'

避免此警告的正确方法是什么？

Answer 1

ObservableField<String> ofFoo = new ObservableField<>("");

虽然我不明白为什么要将一个空字符串包装为一个可观察对象。