RecyclerView(一)点击事件的两种方式

recyclerview自身不带有点击事件的回调，以下实现recyclerview点击事件的两种方式

1、通过接口回调的方式：

直接上代码加注释

1、首先定义点击的接口

public interface OnItemClickListener {
void onItemClick(View view, int position);
}

2、在recyclerview的adapter中实现点击方法

public class ListRecycleViewAdapter extends RecyclerView.Adapter<ListRecycleViewAdapter.ListViewHolder>{

private Context mContext;
private List<String> mList;

public ListRecycleViewAdapter(Context context, List<String> list) {
mContext = context;
mList = list;
}

@Override
public ListViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
return new ListViewHolder(LayoutInflater.from(mContext).inflate(R.layout.item_list_recycle_view, parent,
false));
}

@Override
public void onBindViewHolder(final ListViewHolder holder, int position) {
holder.tv.setText(mList.get(position));

View itemView = ((RelativeLayout) holder.itemView).getChildAt(0);

if (mOnItemClickListener != null) {
itemView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
int position = holder.getLayoutPosition();
mOnItemClickListener.onItemClick(holder.itemView, position);
}
});
}
}

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

private OnItemClickListener mOnItemClickListener;//声明接口

public void setOnItemClickListener(OnItemClickListener onItemClickListener) {
mOnItemClickListener = onItemClickListener;
}

class ListViewHolder extends RecyclerView.ViewHolder {
TextView tv;

public ListViewHolder(View itemView) {
super(itemView);
tv = (TextView) itemView.findViewById(R.id.tv_list_item);
}
}

}

3、在activity中使用

ListRecycleViewAdapter listRecycleViewAdapter = new ListRecycleViewAdapter(SettingActivity.this, mList);
listRecycleViewAdapter.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(View view, int position) {

}
}

2，通过recyclerview的addOnItemTouchListener实现点击事件

1、首先定义类RecyclerItemClickListener实现 RecyclerView.OnItemTouchListener接口，重写onLongPress（）方法，onInterceptTouchEvent（）方法，onTouchEvent（）方法，onRequestDisallowInterceptTouchEvent（）方法，并在本类内部定义一个点击监听的接口interface OnItemClickListener，接口内部设置两个方法onItemClick（），onLongClick（）。下面上代码：

public static class RecyclerItemClickListener implements RecyclerView.OnItemTouchListener {
GestureDetector mGestureDetector;
private View childView;
private RecyclerView touchView;

public RecyclerItemClickListener(Context context, final HomePageFragment.RecyclerItemClickListener.OnItemClickListener mListener) {
mGestureDetector = new GestureDetector(context, new GestureDetector.SimpleOnGestureListener() {
@Override
public boolean onSingleTapUp(MotionEvent ev) {
if (childView != null && mListener != null) {
mListener.onItemClick(childView, touchView.getChildPosition(childView));
}
return true;
}

@Override
public void onLongPress(MotionEvent ev) {
if (childView != null && mListener != null) {
mListener.onLongClick(childView, touchView.getChildPosition(childView));
}
}
});
}

public interface OnItemClickListener {
void onItemClick(View view, int position);

void onLongClick(View view, int posotion);
}

@Override
public boolean onInterceptTouchEvent(RecyclerView rv, MotionEvent e) {
mGestureDetector.onTouchEvent(e);
childView = rv.findChildViewUnder(e.getX(), e.getY());
touchView = rv;
return false;
}

@Override
public void onTouchEvent(RecyclerView rv, MotionEvent e) {

}

@Override
public void onRequestDisallowInterceptTouchEvent(boolean disallowIntercept) {

}
}

2、将我们的布局中定义recyclerview添加方法 addOnItemTouchListener（）

rc_view.addOnItemTouchListener(new RecyclerItemClickListener(this，new RecyclerItemClickListener.OnItemClickListener() {
public void onItemClick(View view, int position) {
//在此处做点击之后的逻辑处理
｝
@Override
public void onLongClick(View view, int position) {
//在此处做长按之后的逻辑处理
//    Toast.makeText(getContext(), "长按", Toast.LENGTH_SHORT).show();
}
｝