,可以通过以下步骤实现:
<androidx.recyclerview.widget.RecyclerView
android:id="@+id/recyclerView"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layoutManager="androidx.recyclerview.widget.LinearLayoutManager"
app:layout_behavior="@string/appbar_scrolling_view_behavior" />
private boolean[] selectedItems;
public void setItemSelected(int position, boolean isSelected) {
selectedItems[position] = isSelected;
notifyItemChanged(position);
}
@Override
public void onBindViewHolder(@NonNull ViewHolder holder, final int position) {
holder.cardView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
boolean isSelected = !selectedItems[position];
setItemSelected(position, isSelected);
}
});
}
public void clearSelectedItems() {
Arrays.fill(selectedItems, false);
notifyDataSetChanged();
}
这样,当用户在回收器视图中选择多个CardView时,你可以根据选中状态来改变CardView的外观或执行相应的操作。
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