如何获取RecyclerView中被触摸的Item行的位置
How to get the position of touched Item row in RecyclerView
我想获取我点击的项目的位置。
请给我同样的建议。
我已经实现了 ontouchItemListener
这样的:
请参考下面的代码。
recyclerView.addOnItemTouchListener(new RecyclerView.OnItemTouchListener() {
@Override
public boolean onInterceptTouchEvent(RecyclerView rv, MotionEvent e) {
return false;
}
@Override
public void onTouchEvent(RecyclerView rv, MotionEvent e) {
}
@Override
public void onRequestDisallowInterceptTouchEvent(boolean disallowIntercept) {
}
});
创建实现 RecyclerView.OnItemTouchListener
的 RecyclerItemClickListener
public class RecyclerItemClickListener implements RecyclerView.OnItemTouchListener {
private OnItemClickListener mListener;
public interface OnItemClickListener {
public void onItemClick(View view, int position);
}
GestureDetector mGestureDetector;
public RecyclerItemClickListener(Context context, OnItemClickListener listener) {
mListener = listener;
mGestureDetector = new GestureDetector(context, new GestureDetector.SimpleOnGestureListener() {
@Override
public boolean onSingleTapUp(MotionEvent e) {
return true;
}
});
}
@Override
public boolean onInterceptTouchEvent(RecyclerView view, MotionEvent e) {
View childView = view.findChildViewUnder(e.getX(), e.getY());
if (childView != null && mListener != null && mGestureDetector.onTouchEvent(e)) {
mListener.onItemClick(childView, view.getChildAdapterPosition(childView));
}
return false;
}
@Override
public void onTouchEvent(RecyclerView view, MotionEvent motionEvent) {
}
@Override
public void onRequestDisallowInterceptTouchEvent(boolean disallowIntercept) {
}
在活动中使用这个
recyclerView.addOnItemTouchListener(
new RecyclerItemClickListener(getApplicationContext(), new RecyclerItemClickListener.OnItemClickListener() {
@Override public void onItemClick(View view, int position) {
}
})
);
@gokul-gowda 的 kotlin 形式的答案是:
class RecyclerItemTouchListener(
context: Context,
val listener: (view: View, position: Int) -> Unit
) : RecyclerView.OnItemTouchListener {
var mGestureDetector: GestureDetector = GestureDetector(context, object :
GestureDetector.SimpleOnGestureListener() {
override fun onSingleTapUp(e: MotionEvent?): Boolean {
return true
}
})
override fun onInterceptTouchEvent(rv: RecyclerView, e: MotionEvent): Boolean {
val childView = rv.findChildViewUnder(e.x, e.y)
if (childView != null && mGestureDetector.onTouchEvent(e)) {
listener.invoke(childView, rv.getChildAdapterPosition(childView));
}
return false
}
override fun onTouchEvent(rv: RecyclerView, e: MotionEvent) {
//TODO("Not yet implemented")
}
override fun onRequestDisallowInterceptTouchEvent(disallowIntercept: Boolean) {
//TODO("Not yet implemented")
}
}
我想获取我点击的项目的位置。
请给我同样的建议。
我已经实现了 ontouchItemListener
这样的:
请参考下面的代码。
recyclerView.addOnItemTouchListener(new RecyclerView.OnItemTouchListener() {
@Override
public boolean onInterceptTouchEvent(RecyclerView rv, MotionEvent e) {
return false;
}
@Override
public void onTouchEvent(RecyclerView rv, MotionEvent e) {
}
@Override
public void onRequestDisallowInterceptTouchEvent(boolean disallowIntercept) {
}
});
创建实现 RecyclerView.OnItemTouchListener
的 RecyclerItemClickListenerpublic class RecyclerItemClickListener implements RecyclerView.OnItemTouchListener {
private OnItemClickListener mListener;
public interface OnItemClickListener {
public void onItemClick(View view, int position);
}
GestureDetector mGestureDetector;
public RecyclerItemClickListener(Context context, OnItemClickListener listener) {
mListener = listener;
mGestureDetector = new GestureDetector(context, new GestureDetector.SimpleOnGestureListener() {
@Override
public boolean onSingleTapUp(MotionEvent e) {
return true;
}
});
}
@Override
public boolean onInterceptTouchEvent(RecyclerView view, MotionEvent e) {
View childView = view.findChildViewUnder(e.getX(), e.getY());
if (childView != null && mListener != null && mGestureDetector.onTouchEvent(e)) {
mListener.onItemClick(childView, view.getChildAdapterPosition(childView));
}
return false;
}
@Override
public void onTouchEvent(RecyclerView view, MotionEvent motionEvent) {
}
@Override
public void onRequestDisallowInterceptTouchEvent(boolean disallowIntercept) {
}
在活动中使用这个
recyclerView.addOnItemTouchListener(
new RecyclerItemClickListener(getApplicationContext(), new RecyclerItemClickListener.OnItemClickListener() {
@Override public void onItemClick(View view, int position) {
}
})
);
@gokul-gowda 的 kotlin 形式的答案是:
class RecyclerItemTouchListener(
context: Context,
val listener: (view: View, position: Int) -> Unit
) : RecyclerView.OnItemTouchListener {
var mGestureDetector: GestureDetector = GestureDetector(context, object :
GestureDetector.SimpleOnGestureListener() {
override fun onSingleTapUp(e: MotionEvent?): Boolean {
return true
}
})
override fun onInterceptTouchEvent(rv: RecyclerView, e: MotionEvent): Boolean {
val childView = rv.findChildViewUnder(e.x, e.y)
if (childView != null && mGestureDetector.onTouchEvent(e)) {
listener.invoke(childView, rv.getChildAdapterPosition(childView));
}
return false
}
override fun onTouchEvent(rv: RecyclerView, e: MotionEvent) {
//TODO("Not yet implemented")
}
override fun onRequestDisallowInterceptTouchEvent(disallowIntercept: Boolean) {
//TODO("Not yet implemented")
}
}