首先,recyclerview的item點擊事件的添加有很多方法,這裏只說一種我用的最多的,不喜勿噴。也歡迎留言指教。
recyclerview雖然比listview要好,但是有好處的東西總是有壞處的 ,比如,recyclerview就沒有對item點擊事件的監聽方法,之提供了一個onItemTouchListener,使用onItemTouchListener也可以實現對item點擊事件的監聽,但是其中需要重寫ontouchevent等方法,個人覺得不如我接下來的方法好:
先看效果圖
首先,因爲官方沒有提供給我們item的clicklistener,那麼 我們就自己自定義一個就好了,,如下 定義接口:
public interface OnRecyclerviewItemClickListener {
void onItemClickListener(View v,int position);
}
既然官方沒有提供點擊的監聽,所以我們這個監聽方法就不能綁定在recyclerview對象上,因此,我們將 這個步驟轉移到adapter中進行,(這個過程使用觀察者模式)。
看adapter的代碼
package com.example.lixu.xiezuomao.view.adapter;
import android.content.Context;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;
import com.example.lixu.xiezuomao.R;
import com.example.lixu.xiezuomao.modle.OnRecyclerviewItemClickListener;
import com.example.lixu.xiezuomao.view.bean.xiaoshuoBean;
import java.util.List;
/**
* Created by lixu on 2017/6/27.
*/
public class RecyclerViewAdapter extends RecyclerView.Adapter implements View.OnClickListener {
private LayoutInflater inflater;
private Context context;
private List<xiaoshuoBean> xiaoshuoList;
//聲明自定義的監聽接口
private OnRecyclerviewItemClickListener mOnRecyclerviewItemClickListener = null;
//構造方法中添加自定義監聽接口
public RecyclerViewAdapter(Context context, List<xiaoshuoBean> xiaoshuoList,OnRecyclerviewItemClickListener mOnRecyclerviewItemClickListener) {
this.context = context;
this.xiaoshuoList = xiaoshuoList;
inflater = LayoutInflater.from(context);
this.mOnRecyclerviewItemClickListener = mOnRecyclerviewItemClickListener;
}
@Override
public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View view = inflater.inflate(R.layout.shouye_recyclerview_item_layout, parent, false);
//這裏 我們可以拿到點擊的item的view 對象,所以在這裏給view設置點擊監聽,
view.setOnClickListener(this);
return new MyViewHolder(view);
}
@Override
public void onBindViewHolder(RecyclerView.ViewHolder holder, int position) {
MyViewHolder holder1 = (MyViewHolder) holder;
xiaoshuoBean xiaoshuoBean = xiaoshuoList.get(position);
holder1.titleTv.setText(xiaoshuoBean.getTitle());
holder1.chapterTv2.setText(xiaoshuoBean.getChapter2());
holder1.chapterTv1.setText(xiaoshuoBean.getChapter1());
holder1.itemView.setTag(position);//給view設置tag以作爲參數傳遞到監聽回調方法中
}
@Override
public int getItemCount() {
return xiaoshuoList.size();
}
@Override
public void onClick(View v) {
//將監聽傳遞給自定義接口
mOnRecyclerviewItemClickListener.onItemClickListener(v, ((int) v.getTag()));
}
class MyViewHolder extends RecyclerView.ViewHolder{
private TextView titleTv;
private TextView chapterTv1;
private TextView chapterTv2;
public MyViewHolder(View itemView) {
super(itemView);
chapterTv1 = ((TextView) itemView.findViewById(R.id.zhangjie1_tv));
chapterTv2 = ((TextView) itemView.findViewById(R.id.zhangjie2_tv));
titleTv = ((TextView) itemView.findViewById(R.id.title_tv));
}
}
}
如何使用:
在activity中或者fragment中聲明自定義的監聽接口
private OnRecyclerviewItemClickListener onRecyclerviewItemClickListener = new OnRecyclerviewItemClickListener() {
@Override
public void onItemClickListener(View v, int position) {
//這裏的view就是我們點擊的view position就是點擊的position
Toast.makeText(getContext()," 點擊了 "+position,Toast.LENGTH_SHORT).show();
}
};
將接口作爲參數傳入adapter的構造方法中即可:
//初始化recyclerview
RecyclerViewAdapter adpter = new RecyclerViewAdapter(getActivity(),xsBean,onRecyclerviewItemClickListener);
recyclerView.setLayoutManager(new LinearLayoutManager(getContext()));
recyclerView.setAdapter(adpter);