[英]passing values from recycler adapter to fragment in android
我有一个回收站适配器,在其中为适配器中的项目添加了setOnClickListener
。 代码如下:
@Override
public void onBindViewHolder(final FiltersAdapter.MyViewHolder holder, final int position) {
holder.mOrganizer.setText(filtersList.get(position));
holder.mLayout.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
try {
//Log.e("message","ONclick FIlter");
if (holder.mOrganizerCheck.isChecked()){
holder.mOrganizerCheck.setChecked(false);
}else {
holder.mOrganizerCheck.setChecked(true);
int pos = holder.getAdapterPosition();
filtersList.get(pos);
/*Bundle bundle = new Bundle();
bundle.putInt(pos, );*/
Log.d(TAG, "onClick: " +filtersList);
Log.d(TAG, "onClick of position: " +pos);
}
} catch (Exception e) {
e.printStackTrace();
}
}
});
这是片段代码,用于处理从适配器到片段的值。
private void initView() {
mrvFilterBySender = (RecyclerView) mFilterView.findViewById(R.id.rvFilterBySender);
mFiltersAdapter = new FiltersAdapter(getActivity(), mListOrganizer);
RecyclerView.LayoutManager mLayoutManager = new LinearLayoutManager(getContext());
mrvFilterBySender.setLayoutManager(mLayoutManager);
mrvFilterBySender.setAdapter(mFiltersAdapter);
mFiltersAdapter.notifyDataSetChanged();
mrvFilterBySender.setAdapter(mFiltersAdapter);
mrvFilterBySender.setRecyclerListener(new RecyclerView.RecyclerListener() {
@Override
public void onViewRecycled(RecyclerView.ViewHolder holder) {
holder.getAdapterPosition();
}
});
}
我正在尝试将pos
和具有该pos
值从适配器传递到片段。 但是我的代码无法正常工作。 我该如何解决?
使处理点击事件的界面进入recyclerview ..下面的代码用于处理点击事件。
onItemClickListner onItemClickListner;
public void setOnItemClickListner(RecyclerViewAdpater.onItemClickListner onItemClickListner) {
this.onItemClickListner = onItemClickListner;
}
public interface onItemClickListner{
void onClick(String str);//pass your object types.
}
@Override
public void onBindViewHolder(ItemViewHolder holder, int position) {
String data=mStringList.get(position); // if you pass object of class then create that class object.
holder.textView.setText(data);
holder.itemView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
onItemClickListner.onClick(data);
}
});
}
然后,当您将适配器绑定到RecyclerView
之后,请调用以下代码。
mRvData.setLayoutManager(new LinearLayoutManager(this));
mRvData.setAdapter(recyclerViewAdpater);
recyclerViewAdpater.notifyDataSetChanged();
recyclerViewAdpater.setOnItemClickListner(new RecyclerViewAdpater.onItemClickListner() {
@Override
public void onClick(String str) {
Toast.makeText(getApplicationContext(), str, Toast.LENGTH_LONG).show();
}
});
在适配器中创建接口
public interface OnItemClickListener {
void onItemClicked(int position, Object object);
}
在您的适配器呼叫中
Adapter adapter = new Adapter(context, list, new Adapter.OnItemClickListener() {
@Override
public void onItemClicked(int position, Object object) {
// Handle Object of list item here
}
});
在您的适配器上
private OnItemClickListener onItemClickListener; // Global scope
在构造函数调用中:
this.onItemClickListener = onItemClickListener;
在您的项目点击事件上:
itemView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
onItemClickListener.onItemClicked(position, _list.get(position));
}
});
请使用下面的接口,将其传递到适配器的构造函数中,然后在您的活动/片段中使用它
public MyAdapter(Context context, List<Object> data, MyAdapterListener myAdapterListener) {
this.context = context;
this.data = data;
this.myAdapterListener = myAdapterListener;
}
public interface MyAdapterListener {
void onContainerClick(View view, int position);
}
}
public class ViewHolderItem extends RecyclerView.ViewHolder implements View.OnClickListener {
public LinearLayout container;
public ImageView poster;
public ViewHolderItem(View v) {
super(v);
container = (LinearLayout) v.findViewById(R.id.container);
poster = (ImageView) v.findViewById(R.id.poster);
container =setOnClickListener(this); /// this line must include
}
@Override
public void onClick(View v) {
int id = v.getId();
if (id == R.id.container) {
if (myAdapterListener != null) {
myAdapterListener.onContainerClick(v,getAdapterPosition());
}
}
}
}
在片段/活动中像这样使用它
mAdapter = new MyAdapter(getApplicationContext() , data, new MyAdapter.MyAdapterListener() {
@Override
public void onContainerClick(View v, int position) {
Log.d(TAG, "iconTextViewOnClick at position "+position);
}
});
mRecycler.setAdapter(mAdapter);
我觉得这对你有用
添加您的适配器
public interface ClickEvent {
void clickEventItem(int position,String value);
}
ClickEvent clickevent;
public void setClickEvent(ClickEvent event) {
this.clickevent = event;
}
itemView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
clickevent.clickEventItem(position, list.get(position));
}
});
在您的片段集界面中
adapter.setClickEvent(您的类上下文);
实现ClickEvent接口并生成@Override方法
@Override
public void clickEventItem(int position,String value) {
//write your code here
}
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