Android数据绑定：找不到属性的setter [英] Android Data Binding : can't find the setter for attribute

问题描述

不知道它是如何工作的，但根据这篇文章可以通过使用不同的命名空间来绑定特定的监听器。

我想用一个searchview做同样的事情，并将QueryTextListener绑定到它，但是我收到以下错误：

 找不到属性bind：setOnQueryTextListener
的参数类型为android.widget.SearchView.OnQueryTextListener的setter。 
  

我在ViewModel中所做的：

  public class MembersFragmentViewModel extends BaseObservable {
 
 private Context context; 
 private MembersAdapter适配器; 
 private RecyclerView recyclelerView; 
 
 public MemberFragmentViewModel（Context context，MembersAdapter adapter，RecyclerView recyclelerView）{
 this.context = context; 
 this.adapter = adapter; 
 this.recyclerView = recyclelerView; 
} 
 
 public SearchView.OnQueryTextListener getQueryTextListener（）{
返回新的SearchView.OnQueryTextListener（）{
 @Override 
 public boolean onQueryTextSubmit（String query） {
 return false; 
} 
 
 @Override 
 public boolean onQueryTextChange（String query）{
列表< Contact> filteredModelList = filter（adapter.getContacts（），query）; 
 adapter.animateTo（filteredModelList）; 
 if（recyclelerView！= null）
 recyclelerView.scrollToPosition（0）; 
返回true; 
} 
}; 
} 
 //代码... 
  

而xml： p>

我的命名空间在布局标签中声明如下：

  xmlns： bind =http://schemas.android.com/apk/res-auto
  

而我的SearchView：

 < android.support.v7.widget.SearchView android：id =@ + id / searchview
 android：layout_width =match_parent
 android：layout_height =40dp
 
 android：background =@ drawable / rounded_search_view_background
 bind：setOnQueryTextListener =@ {viewModel .QueryTextListener}> 
 
< /android.support.v7.widget.SearchView> 
  

这是我的数据标签：

 < data> 
< variable 
 name =viewModel
 type =mypackagename.viewmodel.members.MembersFragmentViewModel/> 
< / data> 
  

非常感谢任何线索！

解决方案

在我的情况下，答案只是一个错误的包名称。

我的SearchView在xml中被声明为具有以下包名称： / p>

  android.support.v7.widget.SearchView 
  

我在ViewModel中使用的包是

  android.widget.SearchView 
  

Not sure how it works but according to this post it's possible to bind specific listener by using different namespaces.

I wanted to do the same thing with a searchview and bind a QueryTextListener to it but I get the following error :

Cannot find the setter for attribute 'bind:setOnQueryTextListener' 
with parameter type android.widget.SearchView.OnQueryTextListener. 

What I did in my ViewModel :

public class MembersFragmentViewModel extends BaseObservable {

    private Context context;
    private MembersAdapter adapter;
    private RecyclerView recyclerView;

    public MembersFragmentViewModel(Context context, MembersAdapter adapter, RecyclerView recyclerView) {
        this.context = context;
        this.adapter = adapter;
        this.recyclerView = recyclerView;
    }

    public SearchView.OnQueryTextListener getQueryTextListener(){
        return new SearchView.OnQueryTextListener() {
            @Override
            public boolean onQueryTextSubmit(String query) {
                return false;
            }

            @Override
            public boolean onQueryTextChange(String query) {
                List<Contact> filteredModelList = filter(adapter.getContacts(), query);
                adapter.animateTo(filteredModelList);
                if(recyclerView != null)
                    recyclerView.scrollToPosition(0);
                return true;
            }
        };
    } 
    //Code ...

And the xml :

My namespace is declared in the layout tag like this :

xmlns:bind="http://schemas.android.com/apk/res-auto"

And my SearchView :

<android.support.v7.widget.SearchView android:id="@+id/searchview"
        android:layout_width="match_parent"
        android:layout_height="40dp"

        android:background="@drawable/rounded_search_view_background"
        bind:setOnQueryTextListener="@{viewModel.QueryTextListener}">

</android.support.v7.widget.SearchView>

This is my data tag :

<data>
   <variable
       name="viewModel"
       type="mypackagename.viewmodel.members.MembersFragmentViewModel"/>
</data>

Many thanks for any clue !

解决方案

In my case the answer was just a wrong package name.

My SearchView was declared in xml with the following package name :

android.support.v7.widget.SearchView

And the package I used in the ViewModel was

android.widget.SearchView

这篇关于Android数据绑定：找不到属性的setter的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！