如何使用Rxjava2在会议室数据库中的Textview上显示Flowable数据 [英] How to display Flowable data on a Textview in Room Database using Rxjava2
本文介绍了如何使用Rxjava2在会议室数据库中的Textview上显示Flowable数据的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
DAO.class:
@Dao
public interface VisitorDAO {
@Query("Select * from visitor")
Flowable<List<Visitor>> getAll();
@Insert
Completable Insert(Visitor visitor); //Using Single or Maybe tells the Database and the mainthread that this operation will be performed on Rxjava.
@Update
public void Update(Visitor visitor);
@Delete
public void Delete(Visitor visitor);
}
代码:
@Override
public void onComplete() {
visitorFlowable = database.visitorDAO().getAll();
t.setText(visitorFlowable.); //is this the right way????
Toast.makeText(Add_Visitors.this, "Insert Successful!", Toast.LENGTH_SHORT).show();
我已将查询设置为Flowable,其想法是访问那些Flowable返回类型数据并将其显示在textview上.
I have set the Query as Flowable and the idea is to access those Flowable return type data and display it on a textview.
推荐答案
visitorFlowable = database.visitorDAO().getAll();
将返回可流动对象,您需要在UI Thread上订阅它并更新textView
will return a flowable, you need to subscribe it on UI Thread and update textView
database.visitorDAO().getAll()
.observeOn(schedulerProviders.ui())
.subscribe(
list -> {
//list is List<Visitor>, use it to update textView
},
throwable -> {
//this block is executed if any exception is thrown
}
);
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