public class SampleAdapter extends RecyclerView.Adapter<SampleAdapter.SampleViewHolder> {
private List<DataBean> mDatas;
private OnItemClickListener mListener; // Item点击事件
public DataBean getItem(int position) {
return mDatas == null ? null : mDatas.get(position);
}
@Override
public SampleViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View itemView = LayoutInflater.from(parent.getContext()).inflate(R.layout.item, parent,false);
return new SampleViewHolder(itemView);
}
@Override
public void onBindViewHolder(SampleViewHolder holder, int position) {
}
@Override
public int getItemCount() {
return mDatas == null ? 0 : mDatas.size();
}
class SampleViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener, View.OnLongClickListener {
public SampleViewHolder(View itemView) {
super(itemView);
// TODO:初始化View
...
itemView.setOnClickListener(this);
itemView.setOnLongClickListener(this);
}
@Override
public void onClick(View v) {
if (mListener != null) {
mListener.onItemClick(SampleAdapter.this, v, getLayoutPosition());
}
}
@Override
public boolean onLongClick(View v) {
if (mListener != null) {
mListener.onItemLongClick(SampleAdapter.this, v, getLayoutPosition());
return true;
}
return false;
}
}
}
public class ItemClickSupport {
private static final int KEY = 0x99999999;
private final RecyclerView mRecyclerView;
private OnItemClickListener mOnItemClickListener;
private OnItemLongClickListener mOnItemLongClickListener;
private View.OnClickListener mOnClickListener = new View.OnClickListener() {
@Override
public void onClick(View v) {
if (mOnItemClickListener != null) {
RecyclerView.ViewHolder holder = mRecyclerView.getChildViewHolder(v);
mOnItemClickListener.onItemClicked(mRecyclerView, v, holder.getAdapterPosition());
}
}
};
private View.OnLongClickListener mOnLongClickListener = new View.OnLongClickListener() {
@Override
public boolean onLongClick(View v) {
if (mOnItemLongClickListener != null) {
RecyclerView.ViewHolder holder = mRecyclerView.getChildViewHolder(v);
return mOnItemLongClickListener.onItemLongClicked(mRecyclerView, v, holder.getAdapterPosition());
}
return false;
}
};
private RecyclerView.OnChildAttachStateChangeListener mAttachListener = new RecyclerView.OnChildAttachStateChangeListener() {
@Override
public void onChildViewAttachedToWindow(View view) {
if (mOnItemClickListener != null) {
view.setOnClickListener(mOnClickListener);
}
if (mOnItemLongClickListener != null) {
view.setOnLongClickListener(mOnLongClickListener);
}
}
@Override
public void onChildViewDetachedFromWindow(View view) {
}
};
/**
* ItemClickSupport的私有构造方法
*/
private ItemClickSupport(RecyclerView recyclerView) {
mRecyclerView = recyclerView;
mRecyclerView.setTag(KEY, this);
// 为RecyclerView设置OnChildAttachStateChangeListener事件监听
mRecyclerView.addOnChildAttachStateChangeListener(mAttachListener);
}
/**
* 为RecyclerView设置ItemClickSupport
*/
public static ItemClickSupport addTo(RecyclerView view) {
ItemClickSupport support = (ItemClickSupport) view.getTag(KEY);
if (support == null) {
support = new ItemClickSupport(view);
}
return support;
}
/**
* 为RecyclerView移除ItemClickSupport
*/
public static ItemClickSupport removeFrom(RecyclerView view) {
ItemClickSupport support = (ItemClickSupport) view.getTag(KEY);
if (support != null) {
support.detach(view);
}
return support;
}
/**
* 为RecyclerView设置点击事件监听
*/
public ItemClickSupport setOnItemClickListener(OnItemClickListener listener) {
mOnItemClickListener = listener;
return this;
}
/**
* 为RecyclerView设置长按事件监听
*/
public ItemClickSupport setOnItemLongClickListener(OnItemLongClickListener listener) {
mOnItemLongClickListener = listener;
return this;
}
/**
* 为RecyclerView移除OnChildAttachStateChangeListener事件监听
*/
private void detach(RecyclerView view) {
view.removeOnChildAttachStateChangeListener(mAttachListener);
view.setTag(KEY, null);
}
/**
* RecyclerView的点击事件监听接口
*/
public interface OnItemClickListener {
void onItemClicked(RecyclerView recyclerView, View itemView, int position);
}
/**
* RecyclerView的长按事件监听接口
*/
public interface OnItemLongClickListener {
boolean onItemLongClicked(RecyclerView recyclerView, View itemView, int position);
}
}
private RecyclerView.OnChildAttachStateChangeListener mAttachListener = new RecyclerView.OnChildAttachStateChangeListener() {
@Override
public void onChildViewAttachedToWindow(View view) {
if (mOnItemClickListener != null) {
view.setOnClickListener(mOnClickListener);
}
if (mOnItemLongClickListener != null) {
view.setOnLongClickListener(mOnLongClickListener);
}
}
@Override
public void onChildViewDetachedFromWindow(View view) {}
};
/**
* Add an {@link OnItemTouchListener} to intercept touch events before they are dispatched
* to child views or this view's standard scrolling behavior.
*
* <p>Client code may use listeners to implement item manipulation behavior. Once a listener
* returns true from
* {@link OnItemTouchListener#onInterceptTouchEvent(RecyclerView, MotionEvent)} its
* {@link OnItemTouchListener#onTouchEvent(RecyclerView, MotionEvent)} method will be called
* for each incoming MotionEvent until the end of the gesture.</p>
*
* @param listener Listener to add
* @see SimpleOnItemTouchListener
*/
public void addOnItemTouchListener(OnItemTouchListener listener) {
mOnItemTouchListeners.add(listener);
}
public static interface OnItemTouchListener {
public boolean onInterceptTouchEvent(RecyclerView rv, MotionEvent e);
public void onTouchEvent(RecyclerView rv, MotionEvent e);
public void onRequestDisallowInterceptTouchEvent(boolean disallowIntercept);
}
/**
* An implementation of {@link RecyclerView.OnItemTouchListener} that has empty method bodies and
* default return values.
*
* You may prefer to extend this class if you don't need to override all methods. Another
* benefit of using this class is future compatibility. As the interface may change, we'll
* always provide a default implementation on this class so that your code won't break when
* you update to a new version of the support library.
*/
public static class SimpleOnItemTouchListener implements RecyclerView.OnItemTouchListener {
<span style="font-family:'Microsoft YaHei';">
</span> @Override
public boolean onInterceptTouchEvent(RecyclerView rv, MotionEvent e) {
return false;
}
@Override
public void onTouchEvent(RecyclerView rv, MotionEvent e) {
}
@Override
public void onRequestDisallowInterceptTouchEvent(boolean disallowIntercept) {
}
}
// 单击,触摸屏按下时立刻触发 abstract boolean onDown(MotionEvent e); // 抬起,手指离开触摸屏时触发(长按、滚动、滑动时,不会触发这个手势) abstract boolean onSingleTapUp(MotionEvent e); // 短按,触摸屏按下后片刻后抬起,会触发这个手势,如果迅速抬起则不会 abstract void onShowPress(MotionEvent e); // 长按,触摸屏按下后既不抬起也不移动,过一段时间后触发 abstract void onLongPress(MotionEvent e); // 滚动,触摸屏按下后移动 abstract boolean onScroll(MotionEvent e1, MotionEvent e2, float distanceX, float distanceY); // 滑动,触摸屏按下后快速移动并抬起,会先触发滚动手势,跟着触发一个滑动手势 abstract boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY); OnDoubleTapListener的接口有这几个:
// 双击,手指在触摸屏上迅速点击第二下时触发 abstract boolean onDoubleTap(MotionEvent e); // 双击的按下跟抬起各触发一次 abstract boolean onDoubleTapEvent(MotionEvent e); // 单击确认,即很快的按下并抬起,但并不连续点击第二下 abstract boolean onSingleTapConfirmed(MotionEvent e);
/**
* RecyclerView的Item点击事件监听
*
* @author liyunlong
* @date 2016/11/21 9:42
*/
public class SimpleRecycleViewItemClickListener extends RecyclerView.SimpleOnItemTouchListener {
private OnItemClickListener mListener;
private GestureDetectorCompat mGestureDetector;
public SimpleRecycleViewItemClickListener(OnItemClickListener listener) {
this.mListener = listener;
}
@Override
public boolean onInterceptTouchEvent(RecyclerView rv, MotionEvent e) {
if (mGestureDetector == null) {
initGestureDetector(rv);
}
if (mGestureDetector.onTouchEvent(e)) { // 把事件交给GestureDetector处理
return true;
} else {
return false;
}
}
/**
* 初始化GestureDetector
*/
private void initGestureDetector(final RecyclerView recyclerView) {
mGestureDetector = new GestureDetectorCompat(recyclerView.getContext(), new GestureDetector.SimpleOnGestureListener() { // 这里选择SimpleOnGestureListener实现类,可以根据需要选择重写的方法
/**
* 单击事件
*/
@Override
public boolean onSingleTapUp(MotionEvent e) {
View childView = recyclerView.findChildViewUnder(e.getX(), e.getY());
if (childView != null && mListener != null) {
mListener.onItemClick(childView, recyclerView.getChildLayoutPosition(childView));
return true;
}
return false;
}
/**
* 长按事件
*/
@Override
public void onLongPress(MotionEvent e) {
View childView = recyclerView.findChildViewUnder(e.getX(), e.getY());
if (childView != null && mListener != null) {
mListener.onItemLongClick(childView, recyclerView.getChildLayoutPosition(childView));
}
}
/**
* 双击事件
*/
@Override
public boolean onDoubleTapEvent(MotionEvent e) {
int action = e.getAction();
if (action == MotionEvent.ACTION_UP) {
View childView = recyclerView.findChildViewUnder(e.getX(), e.getY());
if (childView != null && mListener != null) {
mListener.onItemDoubleClick(childView, recyclerView.getChildLayoutPosition(childView));
return true;
}
}
return false;
}
});
}
/**
* RecyclerView的Item点击事件监听接口
*
* @author liyunlong
* @date 2016/11/21 9:43
*/
public interface OnItemClickListener {
/**
* 当ItemView的单击事件触发时调用
*/
void onItemClick(View view, int position);
/**
* 当ItemView的长按事件触发时调用
*/
void onItemLongClick(View view, int position);
/**
* 当ItemView的双击事件触发时调用
*/
void onItemDoubleClick(View view, int position);
}
/**
* RecyclerView的Item点击事件监听实现
*
* @author liyunlong
* @date 2016/11/21 10:05
*/
public class SimpleOnItemClickListener implements OnItemClickListener {
@Override
public void onItemClick(View view, int position) {
}
@Override
public void onItemLongClick(View view, int position) {
}
@Override
public void onItemDoubleClick(View view, int position) {
}
}
}
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