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1 在MyAdapter中定义如下接口:
public static interface OnRecyclerViewItemClickListener { void onItemClick(View view , String data); }
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2 声明这个接口的变量
private OnRecyclerViewItemClickListener mOnItemClickListener = null;
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3 在onCreateViewHolder中对每个view设置条目点击事件
@Override public MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) { View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.layout_item, parent, false); view.setOnClickListener(this); // 设置点击事件 return new MyViewHolder(view); }
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4 把点击事件转移给外面的调用者
@Override public void onClick(View v) { if (mOnItemClickListener !=null){ // 设置tag在onBindViewHolder中设置 mOnItemClickListener.onItemClick(v,(String)v.getTag()); } }
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5 为每个题目设置点击数据
@Override public void onBindViewHolder(MyViewHolder holder, int position) { holder.itemView.setTag("位置为:" + position); // 设置点击数据 holder.mTv1.setText(mList.get(position)); holder.mTv2.setText(mList.get(position)); }
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6 给外面的调用者提供方法
public void setOnItemClickListener(OnRecyclerViewItemClickListener listener) { this.mOnItemClickListener = listener; }
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以上步骤都在MyAdapter中完成
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7 调用者代码
MyAdapter adapter = new MyAdapter(list); mRv.setLayoutManager(new LinearLayoutManager(this)); //如果可以确定每个item的高度是固定的,设置这个选项可以提高性能 mRv.setHasFixedSize(true); //给adapter设置点击事件 adapter.setOnItemClickListener(new MyAdapter.OnRecyclerViewItemClickListener() { @Override public void onItemClick(View view, String data) { Toast.makeText(MainActivity.this, data, Toast.LENGTH_SHORT).show(); } }); mRv.setAdapter(adapter);
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