如何在回收站视图中使用OnClickListener？

Question

我基本上要做的是让回收器视图中显示的对象可以点击某个TextView id,因为我正在制作一个程序,在列表中显示一个专辑封面及其旁边的标题.我需要能够点击回收者视图所做的每一个方框,并在点击时弹出带有其他信息(作者,发布日期,热门歌曲等)的TextView,然后再按一个后退按钮(如果可以)回到专辑列表.我已经看了好几个小时,无法弄清楚如何让OnclickListener为它工作.如果您知道如何或有任何建议,我很高兴听到他们.谢谢!

package com.albumlist.albumlist;

import android.content.Context;
import android.content.Intent;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;

public class MyAdapter extends RecyclerView.Adapter<MyAdapter.ViewHolder> {
    private AlbumData[] itemsData;

    public MyAdapter(AlbumData[] itemsData){
        this.itemsData = itemsData;
    }

    public static class ViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener {

        private TextView txtViewTitle;
        private ImageView imgViewIcon;

        public ViewHolder(View itemLayoutView) {
            super(itemLayoutView);
            itemLayoutView.setOnClickListener(this);
            txtViewTitle = (TextView) itemLayoutView.findViewById(R.id.album_title);
            imgViewIcon = (ImageView) itemLayoutView.findViewById(R.id.album_icon);
        }

        @Override
        public void onClick(View v) {

        }
    }

    @Override
    public MyAdapter.ViewHolder onCreateViewHolder(ViewGroup parent,int viewType) {

        View itemLayoutView = LayoutInflater.from(parent.getContext())
                .inflate(R.layout.data_layout, null);

        ViewHolder viewHolder = new ViewHolder(itemLayoutView);
        return viewHolder;
    }

    @Override
    public void onBindViewHolder(ViewHolder viewHolder, int position) {

        viewHolder.txtViewTitle.setText(itemsData[position].getTitle());
        viewHolder.imgViewIcon.setImageResource(itemsData[position].getImageUrl());
    }

    @Override
    public int getItemCount() {
        return itemsData.length;
    }

}

Answer 1

Xaver Kapeller在评论中很好地总结了这个概念。如果您正在寻找一种RecyclerView类似于传统交互的简单方法来管理交互ListView，请查看GitHub 上的BigNerdRanch 的 recyclerview-multiselect库。他们有一个示例应用程序可供您探索，它实现了一系列OnClickListeners并OnLongClickListeners添加了多项选择功能。

下面是 BigNerdRanch 如何在 a和 aFragment之间实现侦听器的片段，在本例中实际上是库自己的扩展AdapterViewHolderSwappingHolder.

public CrimeHolder(View itemView) {
        super(itemView, mMultiSelector);

        mTitleTextView = (TextView) itemView.findViewById(R.id.crime_list_item_titleTextView);
        mDateTextView = (TextView) itemView.findViewById(R.id.crime_list_item_dateTextView);
        mSolvedCheckBox = (CheckBox) itemView.findViewById(R.id.crime_list_item_solvedCheckBox);
        itemView.setOnClickListener(this);
        itemView.setLongClickable(true);
        itemView.setOnLongClickListener(this);
    }

    public void bindCrime(Crime crime) {
        mCrime = crime;
        mTitleTextView.setText(crime.getTitle());
        mDateTextView.setText(crime.getDate().toString());
        mSolvedCheckBox.setChecked(crime.isSolved());
    }

    @Override
    public void onClick(View v) {

        if (mCrime == null) {
            return;
        }
        if (!mMultiSelector.tapSelection(this)) {
            selectCrime(mCrime);
        }

    }


    @Override
    public boolean onLongClick(View v) {

        ((AppCompatActivity) getActivity()).startSupportActionMode(mDeleteMode);
        mMultiSelector.setSelected(this, true);
        return true;
    }


}


private class CrimeAdapter extends RecyclerView.Adapter<CrimeHolder> {
    @Override
    public CrimeHolder onCreateViewHolder(ViewGroup parent, int pos) {
        View view = LayoutInflater.from(parent.getContext())
                .inflate(R.layout.list_item_crime, parent, false);
        return new CrimeHolder(view);
    }

    @Override
    public void onBindViewHolder(CrimeHolder holder, int pos) {
        Crime crime = mCrimes.get(pos);
        holder.bindCrime(crime);
        Log.d(TAG, "binding crime" + crime + "at position" + pos);
    }

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