notifyDataSetChange无法在RecyclerView上运行

Question

我正在使用Android的新RecyclerView,但每当我调用其中一个"notify"方法时,我都无法刷新我的自定义适配器.

我试过调用notifyDataSetChanged,notifyItemRangeInserted和notifyItemInserted,但它们似乎都没有工作.

这是我的自定义适配器的代码.我基本上试图刷新一个字符串列表:

package com.mycompany.myapp.adapters;

import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.LinearLayout;
import android.widget.TextView;

import com.mycompany.myapp.R;

import java.util.List;

public class FeedAdapter extends RecyclerView.Adapter<FeedAdapter.ViewHolder> {

    private List<String> mDataset;

    public FeedAdapter(List<String> dataset) {
        super();
        mDataset = dataset;
    }

    @Override
    public ViewHolder onCreateViewHolder(ViewGroup parent, int i) {
        LinearLayout v = (LinearLayout) LayoutInflater.from(parent.getContext())
                .inflate(R.layout.list_item_feed, parent, false);
        v.setLayoutParams(new LinearLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT,
                ViewGroup.LayoutParams.WRAP_CONTENT));
    return new ViewHolder(v);
    }

    @Override
    public void onBindViewHolder(ViewHolder holder, int position) {
        holder.setText(mDataset.get(position));
    }

    @Override
    public int getItemCount() {
        return mDataset.size();
    }

    public void setDataset(List<Status> dataset) {
        mDataset = dataset;
        // This isn't working
        notifyItemRangeInserted(0, mDataset.size());
    }

    public static class ViewHolder extends RecyclerView.ViewHolder {
        private TextView mFeedText;

        public ViewHolder(View v) {
            super(v);
            mFeedText = (TextView) v.findViewById(R.id.feed_text);
        }

        private void setText(String text) {
            mFeedText.setText(text);
        }
    }
}

还有谁有相同的问题吗？

谢谢!

Answer 1

我的问题是我没有通知主线程的更改,因此立即看不到更改.它指出了同样的问题在这里.

Answer 2

我试图使用notifyDataSetChanged()方法更新RecycleView以响应com.google.common.eventbus.Subscribe.

就像@wmora提到的那样,问题是在主UI线程中没有调用notify方法.

我用AndroidAnnotations的@UiThread解决了这个问题

@UiThread
protected void dataSetChanged() {
    notifyDataSetChanged();
}

这相当于:

 final Adapter adapter = this;
 new Handler(Looper.getMainLooper()).post(new Runnable() {
    @Override
    public void run() {
       adapter.notifyDataSetChanged();
    }
 });

注意:只需将新的Handler分隔为类私有字段