我正在使用以下代码来处理行点击。 (source)
static class RecyclerTouchListener implements RecyclerView.OnItemTouchListener {
private GestureDetector gestureDetector;
private ClickListener clickListener;
public RecyclerTouchListener(Context context, final RecyclerView recyclerView, final ClickListener clickListener) {
this.clickListener = clickListener;
gestureDetector = new GestureDetector(context, new GestureDetector.SimpleOnGestureListener() {
@Override
public boolean onSingleTapUp(MotionEvent e) {
return true;
}
@Override
public void onLongPress(MotionEvent e) {
View child = recyclerView.findChildViewUnder(e.getX(), e.getY());
if (child != null && clickListener != null) {
clickListener.onLongClick(child, recyclerView.getChildPosition(child));
}
}
});
}
@Override
public boolean onInterceptTouchEvent(RecyclerView rv, MotionEvent e) {
View child = rv.findChildViewUnder(e.getX(), e.getY());
if (child != null && clickListener != null && gestureDetector.onTouchEvent(e)) {
clickListener.onClick(child, rv.getChildPosition(child));
}
return false;
}
@Override
public void onTouchEvent(RecyclerView rv, MotionEvent e) {
}
}
但是,如果我想在每一行上说一个删除按钮,这可行。我不确定如何用这个来实现。
我将 OnClick 监听器附加到删除按钮,该按钮有效(删除行),但它也会触发整行的 onclick。
如果单击单个按钮,任何人都可以帮助我避免全行单击。
谢谢。
最佳答案
这就是我在 recyclerView 中处理多个 onClick 事件的方式:
编辑:已更新以包含回调(如其他评论中所述)。我在 ViewHolder
中使用了 WeakReference
来消除潜在的内存泄漏。
定义接口(interface):
public interface ClickListener {
void onPositionClicked(int position);
void onLongClicked(int position);
}
然后是适配器:
public class MyAdapter extends RecyclerView.Adapter<MyAdapter.MyViewHolder> {
private final ClickListener listener;
private final List<MyItems> itemsList;
public MyAdapter(List<MyItems> itemsList, ClickListener listener) {
this.listener = listener;
this.itemsList = itemsList;
}
@Override public MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
return new MyViewHolder(LayoutInflater.from(parent.getContext()).inflate(R.layout.my_row_layout), parent, false), listener);
}
@Override public void onBindViewHolder(MyViewHolder holder, int position) {
// bind layout and data etc..
}
@Override public int getItemCount() {
return itemsList.size();
}
public static class MyViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener, View.OnLongClickListener {
private ImageView iconImageView;
private TextView iconTextView;
private WeakReference<ClickListener> listenerRef;
public MyViewHolder(final View itemView, ClickListener listener) {
super(itemView);
listenerRef = new WeakReference<>(listener);
iconImageView = (ImageView) itemView.findViewById(R.id.myRecyclerImageView);
iconTextView = (TextView) itemView.findViewById(R.id.myRecyclerTextView);
itemView.setOnClickListener(this);
iconTextView.setOnClickListener(this);
iconImageView.setOnLongClickListener(this);
}
// onClick Listener for view
@Override
public void onClick(View v) {
if (v.getId() == iconTextView.getId()) {
Toast.makeText(v.getContext(), "ITEM PRESSED = " + String.valueOf(getAdapterPosition()), Toast.LENGTH_SHORT).show();
} else {
Toast.makeText(v.getContext(), "ROW PRESSED = " + String.valueOf(getAdapterPosition()), Toast.LENGTH_SHORT).show();
}
listenerRef.get().onPositionClicked(getAdapterPosition());
}
//onLongClickListener for view
@Override
public boolean onLongClick(View v) {
final AlertDialog.Builder builder = new AlertDialog.Builder(v.getContext());
builder.setTitle("Hello Dialog")
.setMessage("LONG CLICK DIALOG WINDOW FOR ICON " + String.valueOf(getAdapterPosition()))
.setPositiveButton("OK", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
}
});
builder.create().show();
listenerRef.get().onLongClicked(getAdapterPosition());
return true;
}
}
}
然后在您的 Activity/fragment 中 - 无论您可以实现什么:Clicklistener
- 或匿名类,如果您愿意的话:
MyAdapter adapter = new MyAdapter(myItems, new ClickListener() {
@Override public void onPositionClicked(int position) {
// callback performed on click
}
@Override public void onLongClicked(int position) {
// callback performed on click
}
});
要获取点击了哪个项目,您需要匹配 View ID,即 v.getId() == whateverItem.getId()
希望这种方法有所帮助!
关于android - 在 RecyclerView 中的一行内单击处理按钮,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/30284067/