关于如何执行简单的 RecyclerView
单击事件处理程序的资料有很多,但我找不到有关此基本所需功能的帮助。我希望能够在某个项目上长按
以使其被选中(查看我如何更改高度和颜色以使其显示为已选中)。然后,如果在我的 Fragment
中,我想根据点击的 Toolbar
删除按钮从 RecyclerView
中删除一个项目,例如,如何如果 Google 建议我们不应该在类之外保留来自适配器的位置实例,我就会这样做。
我从 23.2.0 支持库中实现了一个 BottomSheet
,它出现在我的 RecyclerView
上方,但是点击通过,就像我在控制 RecyclerView 本身一样我在顶部还有一个 BottomSheet
。我怎样才能真正“禁用”它?
我试过:使用interface , 将 clickable=true
设置为顶部布局 View 。
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);
....
最佳答案
试试这个。
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
中返回 true,因为在触摸项目回收器 View 后没有效果。
关于android - RecyclerView item selected 以及如何禁用 Touch 事件,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/35856816/