recycle人view多條目以及多條目的點擊事件

一實現多條目

注意創建adapter時繼承

RecyclerView.Adapter不能添加viewholder泛型

如下

RecyclerView.Adapter<HomeAdapter.MyViewHolder>

如果添加泛型是無法使用多個viewholder的

1重寫getviewtype事件

@Override

public int getItemViewType(int position) {

return 1;

}

其中的返回值是根據你的需要返回的

2加載佈局其中viewtype是你的getviewtype的返回值

根據此值來判斷加載哪個item佈局

@Override

public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {

if (viewType == 0) {

view= LayoutInflater.from(context).inflate(R.layout.item_recycler, parent, false);

MyViewHolder holder = new MyViewHolder(view);

return holder;

} else {

view= LayoutInflater.from(context).inflate(R.layout.item2, parent, false);

MyViewHolder2 holder2 = new MyViewHolder2(view);

return holder2;

}

}

3綁定賦值

根據你的getviewtype返回的值加載不同的viewholder

@Override

public void onBindViewHolder(RecyclerView.ViewHolder holder, int position) {

if (getItemViewType(position)==0){

((MyViewHolder) holder).tv.setText(mDatas.get(position).getTitle());

// view.setOnClickListener(this);

}else{

((MyViewHolder2) holder).tv2.setText(mDatas.get(position).getAuthor());

Glide.with(context).load(mDatas.get(position).getPic_small()).into(((MyViewHolder2) holder).imageView);

}

// 多條目點擊事件

holder.itemView.setTag(position);

holder.itemView.setOnClickListener(this);

}

4viewholder根據你的item寫裏面的findbyid只寫了兩個再多以此類推

class MyViewHolder extends RecyclerView.ViewHolder {

TextView tv;

public MyViewHolder(View view) {

super(view);

tv = (TextView) view.findViewById(R.id.id_num);

}

}

class MyViewHolder2 extends RecyclerView.ViewHolder {

TextView tv2;

ImageView imageView;

public MyViewHolder2(View view) {

super(view);

tv2 = (TextView) view.findViewById(R.id.item2_text);

imageView = (ImageView) view.findViewById(R.id.item2_image);

}

}

二點擊事件

多條目點擊事件

步驟

adapter中

自定義一個繼承自RecyclerView.Adapter的MyAdapter。

1.在MyAdapter中定義如下接口,模擬ListView的OnItemClickListener：

1.  //define interface
2.     public static interface OnItemClickListener {
3.         void onItemClick(View view , int position);
4.     }
5. 
   

2聲明一個這個接口的變量

1.     private OnItemClickListener mOnItemClickListener = null;

此方法是要給適配器adapter添加接口

implements View.OnClickListener

3將點擊事件轉移給外面的調用者：

@Override

1.     public void onClick(View v) {
2.         if (mOnItemClickListener != null) {
3.             //注意這裏使用getTag方法獲取position
4.             mOnItemClickListener.onItemClick(v,(int)v.getTag());
5.         }
6.     }

4注意上面調用接口的onItemClick()中的v.getTag()方法，這需要在onBindViewHolder()方法中設置和item的position

@Override

public void onBindViewHolder(RecyclerView.ViewHolder holder, int position) {

if (getItemViewType(position) == 0) {

((MyViewHolder) holder).tv.setText(mDatas.get(position).getTitle());

// view.setOnClickListener(this);

} else {

((MyViewHolder2) holder).tv2.setText(mDatas.get(position).getAuthor());

Glide.with(context).load(mDatas.get(position).getPic_small()).into(((MyViewHolder2) holder).imageView);

}

// 多條目點擊事件

holder.itemView.setTag(position);

holder.itemView.setOnClickListener(this);

}

5最後暴露給外面的調用者，定義一個設置Listener的方法（）：

1.  public void setOnItemClickListener(OnItemClickListener listener) {
2.         this.mOnItemClickListener = listener;
3.     }

6調用在mainactivity中

1.  mAdapter.setOnItemClickListener(new OnItemClickListener(){
2.             @Override    
3.             public void onItemClick(View view , int position){
4.                 Toast.makeText(MainActivity.this, data[position], 600).show();
5.             }
6.         });

完整的adapter

public class MainAdapter extends XRecyclerView.Adapter implements View.OnClickListener {

Context context;

List<JsonBean.SongListBean> mDatas;

View view;

//點擊事件的接口

private OnItemClickListener mOnItemClickListener = null;

public MainAdapter(Context context, List<JsonBean.SongListBean> list) {

this.context = context;

this.mDatas = list;

}

@Override

public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {

if (viewType == 0) {

view = LayoutInflater.from(context).inflate(R.layout.item_recycler, parent, false);

MyViewHolder holder = new MyViewHolder(view);

return holder;

} else {

view = LayoutInflater.from(context).inflate(R.layout.item2, parent, false);

MyViewHolder2 holder2 = new MyViewHolder2(view);

return holder2;

}

}

@Override

public void onBindViewHolder(RecyclerView.ViewHolder holder, int position) {

if (getItemViewType(position) == 0) {

((MyViewHolder) holder).tv.setText(mDatas.get(position).getTitle());

// view.setOnClickListener(this);

} else {

((MyViewHolder2) holder).tv2.setText(mDatas.get(position).getAuthor());

Glide.with(context).load(mDatas.get(position).getPic_small()).into(((MyViewHolder2) holder).imageView);

}

// 多條目點擊事件

holder.itemView.setTag(position);

holder.itemView.setOnClickListener(this);

}

@Override

public int getItemCount() {

return mDatas.size();

}

@Override

public int getItemViewType(int position) {

if (position % 2 == 0) {

return 0;

} else {

return 1;

}

}

class MyViewHolder extends RecyclerView.ViewHolder {

TextView tv;

public MyViewHolder(View view) {

super(view);

tv = (TextView) view.findViewById(R.id.id_num);

}

}

class MyViewHolder2 extends RecyclerView.ViewHolder {

TextView tv2;

ImageView imageView;

public MyViewHolder2(View view) {

super(view);

tv2 = (TextView) view.findViewById(R.id.item2_text);

imageView = (ImageView) view.findViewById(R.id.item2_image);

}

}

public static interface OnItemClickListener {

void onItemClick(View view, int position);

}

public void setOnItemClickListener(OnItemClickListener listener) {

this.mOnItemClickListener = listener;

}

@Override

public void onClick(View v) {

if (mOnItemClickListener != null) {

//注意這裏使用getTag方法獲取position

mOnItemClickListener.onItemClick(v, (int) v.getTag());

}

}

}