t vvbbb

https://github.com/radzio/android-data-binding-recyclerview/blob/0e5fc0dc5a3e2d7146d606c46de446b8564e5ff0/app/src/main/res/layout/users_view.xml#L58 Why not use android:click instead. There is no BindingAdapter implemented about button and click. Why can it run?

消息处理线程

1

1、消息处理怎么能切换会主线程？ 2、在处理的过程中如果遇到了exception，并不会抛出来，只会在console里面显示

在PhotoBrowse的展示中，id为bg的ImageView有什么作用，我认为其实就是一个view这个view我用id为parent的view代替也是没有问题的，这个view是有什么特别的用处么？

LiveData query subscription swallows query exceptions

8

When I use arch(LiveData), I found no exception trigged with no empty constructor. But build a query and invoke find() will trigger the exception.

Observing a property or PropertyQuery

4

Using ObjectBoxLiveData to observer one property?

应该是in不是is的，写is是会报错的

Why not the same as deleteAllTasks()？

1

https://github.com/googlesamples/android-architecture/blob/6419d4c523b67d020120fc400ed5a7372e5615f2/todoapp/app/src/main/java/com/example/android/architecture/blueprints/todoapp/data/source/TasksRepository.java#L299 In line 288, it judges the Map is null or not. Then new a map? If line 299 not like this, NullPointException will be trigged.