Question

Android Studio 3.1.4，Java 1.8

我的pojo（第一个版本）：

public class Product {
    @PrimaryKey
    private long id;
    private long merchantId;
    private String name;
   // getter and setter
}

在我的RecyclerView.Adapter中：

 @Override
    public long getItemId(int index) {
        Product product = (Product) getItem(index);
        return product.getId();
    }

这工作正常。但是我这样更新我的pojo：

public class Product {
    @PrimaryKey
    private String uniqueId;
    private long id;
    private String name;
   // geter and setter
}

现在我得到了错误：

 E/AndroidRuntime( 3937): FATAL EXCEPTION: main
java.lang.IllegalStateException: Two different ViewHolders have the same stable ID. Stable IDs in your adapter MUST BE unique and SHOULD NOT change.
 ViewHolder 1:ViewHolder{42b085c8 position=1 id=45, oldPos=-1, pLpos:-1 not recyclable(1)} 
 View Holder 2:ViewHolder{431beef0 position=0 id=45, oldPos=-1, pLpos:-1} android.support.v7.widget.RecyclerView{4250a110 VFED.V.. ......ID 0,0-720,866 #7f090214 app:id/sortRecyclerView}, adapter:com.myprojectui.adapter.PreviewShoppingBaseSortAdapter@430d1f80, layout:android.support.v7.widget.GridLayoutManager@42f4fe70, context:myproject.customer.ui.MainActivity@421f4460
    at android.support.v7.widget.RecyclerView.handleMissingPreInfoForChangeError(RecyclerView.java:3826)
    at android.support.v7.widget.RecyclerView.dispatchLayoutStep3(RecyclerView.java:3751)
    at android.support.v7.widget.RecyclerView.dispatchLayout(RecyclerView.java:3421)
    at android.support.v7.widget.RecyclerView.consumePendingUpdateOperations(RecyclerView.java:1699)
    at android.support.v7.widget.RecyclerView$1.run(RecyclerView.java:346)
    at android.view.Choreographer$CallbackRecord.run(Choreographer.java:749)
    at android.view.Choreographer.doCallbacks(Choreographer.java:562)
    at android.view.Choreographer.doFrame(Choreographer.java:531)
    at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:735)
    at android.os.Handler.handleCallback(Handler.java:730)

现在，我的私钥是字段 uniqueId ，其类型为 String 。 id 字段不再唯一。 uniqueId 字段是唯一的。

Answer 1

请确保您尚未在分配给您的回收站视图的适配器上设置YourAdapter.setHasStableIds(true)。

RecyclerView.Adapter-getItemId（）-适配器中的稳定ID必须是唯一的，不应更改

1 个答案: