[英]RecyclerView item selected and how to disable Touch events
关于如何执行简单的RecyclerView
click事件处理程序,有各种各样的材料,但是我找不到所需的基本功能的帮助。 我希望能够long tap
按一个项目,使其变为选中状态(请参阅如何更改高程和颜色以使其显示为选中状态)。 然后,例如,如果在“ Fragment
我想基于单击的“ Toolbar
删除按钮从RecyclerView
删除一项,那么如果Google建议我们不保留适配器的位置实例,该怎么办?在课外。
我从23.2.0支持库中实现了一个BottomSheet
,它出现在我的RecyclerView
上方,但是单击仍在进行,就像我在控制RecyclerView本身一样,但我的顶部还有一个BottomSheet
。 我如何才能真正“禁用”它?
我试过了 :使用一个接口 ,将clickable=true
设置为顶部布局视图。
我的RecyclerAdapter
:
public class RecyclerAdapter extends RecyclerView.Adapter<RecyclerAdapter.EventViewHolder> {
private List<Event> eventsList;
private int selected_position = -1;
private RecyclerView recyclerView;
Typeface font;
Typeface fontBold;
public RecyclerAdapter(List<Event> eventsList, RecyclerView recyclerView) {
this.eventsList = eventsList;
this.recyclerView = recyclerView;
}
@Override
public RecyclerAdapter.EventViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View itemView = LayoutInflater.
from(parent.getContext()).
inflate(R.layout.events_cardview, parent, false);
font = Typeface.createFromAsset(itemView.getContext().getAssets(), "ubuntu-l.ttf");
fontBold = Typeface.createFromAsset(itemView.getContext().getAssets(), "ubuntu-b.ttf");
return new EventViewHolder(itemView);
}
@Override
public void onBindViewHolder(RecyclerAdapter.EventViewHolder eventViewHolder,final int position) {
if(selected_position == position){
// Here I am just highlighting the background
eventViewHolder.cardView.setCardBackgroundColor(ContextCompat.getColor(MyApplication.getAppContext(), R.color.tealfifty));
if (Build.VERSION.SDK_INT >= 21) {
eventViewHolder.itemView.setElevation(10f);
eventViewHolder.itemView.setTranslationZ(10f);
}
}else{
if (Build.VERSION.SDK_INT >= 21) {
eventViewHolder.itemView.setElevation(2f);
eventViewHolder.itemView.setTranslationZ(2f);
}
eventViewHolder.cardView.setCardBackgroundColor(ContextCompat.getColor(MyApplication.getAppContext(), R.color.white));
}
eventViewHolder.itemView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
RecyclerView.LayoutManager lm = recyclerView.getLayoutManager();
// Updating old as well as new positions
notifyItemChanged(selected_position);
selected_position = position;
notifyItemChanged(selected_position);
lm.scrollToPosition(selected_position);
}
});
Event event = eventsList.get(position);
eventViewHolder.itemView.setTag(R.integer.EVENT_OBJECT_TAG, event);
....
尝试这个。
mRecyclerView.addOnItemTouchListener(new RecyclerView.OnItemTouchListener() {
@Override
public boolean onInterceptTouchEvent(RecyclerView rv, MotionEvent e) {
return true;
}
@Override
public void onTouchEvent(RecyclerView rv, MotionEvent e) {
}
@Override
public void onRequestDisallowInterceptTouchEvent(boolean disallowIntercept) {
}
});
我在onInterceptTouchEvent
返回true,但在触摸项目回收器视图之后无效。
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