有人使用RecyclerView找到了一种方法来设置一个onClickListener的项目在RecyclerView? 我想设置一个监听器为每个项目的布局,但这似乎有点太麻烦了 我确信有一种方法让RecyclerView监听onClick事件,但我不能完全弄清楚。
当前回答
这对我来说很难在活动中有一个项目点击监听器,也有一个项目的单一视图的点击监听器,不会触发项目点击监听器。在玩了Jacob Tabak的回答后,我尊重他的回答,如果项目内没有其他触摸操作,就点击项目。
我有一个自定义OnClickListener接口,有一个项目点击事件,它持有从适配器点击的项目的视图和项目的位置。我在构造函数(或者它可以是setter)中呈现它的一个实例,并将它附加到视图持有者容器click listener。
我也有其他的点击监听器在适配器(可以在视图持有人),这将处理当前的视图点击从容器。
public class MyRecyclerAdapter extends RecyclerView.Adapter<MyViewHolder> {
private ArrayList<String> mData;
private OnItemClickListener mOnItemClickListener;
public interface OnItemClickListener {
public void onItemClick(View view, int position);
}
public MyRecyclerAdapter(ArrayList<String> itemsData,
OnItemClickListener onItemClickListener) {
mOnItemClickListener = onItemClickListener;
this.mData = itemsData;
}
@Override
public MyViewHolder onCreateViewHolder(ViewGroup parent,
int viewType) {
View layoutView = LayoutInflater.from(mContext).inflate(
R.layout.list_item, parent, false);
final MyViewHolder viewHolder = new MyViewHolder(layoutView);
viewHolder.container.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
mOnItemClickListener.onItemClick(v, viewHolder.getAdapterPosition());
}
});
viewHоlder.button.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
//do button click work here with
// mData.get( viewHolder.getAdapterPosition() );
}
});
return viewHolder;
}
@Override
public int getItemCount() {
return mData.size();
}}
在活动中,您需要通过传递OnItemClickListener实例来初始化适配器
public class FeedActivity extends ActionBarActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
...
RecyclerView recyclerView = (RecyclerView) findViewById(R.id.my_recycler_view);
.....
MyRecyclerAdapter adapter = new MyRecyclerAdapter(new ArrayList<String>(), new OnItemClickListener() {
@Override
public void onItemClick(View view, int position) {
///list item was clicked
}
});
recyclerView.setLayoutManager(new LinearLayoutManager(this));
recyclerView.setAdapter(mFeedsAdapter);
}
还有我的ViewHolder
public class MyViewHolder extends RecyclerView.ViewHolder {
public Button button;
public View container;
public MyViewHolder(View itemLayoutView) {
super(itemLayoutView);
container = itemLayoutView;
button = (Button) itemLayoutView.findViewById(R.id.button);
}}
其他回答
我的方式
活动课上:
public class MyActivity extends AppCompatActivity implements EmployeeAdapter.ClickListener {
...
@Override
public void onClick(int position) { ... }
...
}
适配器类:
public class MyAdapter extends RecyclerView.Adapter<MyAdapter.MyViewHolder> {
...
@Override
public void onBindViewHolder(){
holder.textView1.setOnClickListener(v -> clickListener.onClick(position));
}
...
public interface ClickListener {
void onClick(int position);
}
...
}
这个作品。
public class ServiceListAdapter extends RecyclerView.Adapter<ServiceListAdapter.ViewHolder> {
private final Context mContext;
private List<ServiceListModel> categoryList;
private View.OnClickListener onClickListener;
public ServiceListAdapter(Context mContext, List<ServiceListModel> categoryList, View.OnClickListener onClickListener) {
this.categoryList = categoryList;
this.mContext = mContext;
this.onClickListener = onClickListener;
}
@Override
public ViewHolder onCreateViewHolder(final ViewGroup parent, final int viewType) {
final LayoutInflater inflater = LayoutInflater.from(parent.getContext());
final RowServiceListBinding binding = DataBindingUtil.inflate(inflater, R.layout.row_service_list, parent, false);
return new ViewHolder(binding.getRoot(), binding);
}
@Override
public void onBindViewHolder(final ViewHolder holder, final int position) {
holder.binding.rlService.setOnClickListener(onClickListener);
holder.binding.rlService.setTag(position);
}
@Override
public int getItemCount() {
return categoryList.size();
}
public class ViewHolder extends RecyclerView.ViewHolder {
private final RowServiceListBinding binding;
public ViewHolder(final View view, final RowServiceListBinding binding) {
super(view);
this.binding = binding;
}
@UiThread
public void bind(final ServiceListModel mAddressModel) {
//this.binding.setAddress(mAddressModel);
}
}
}
在活动/片段中使用
ServiceListAdapter adapter = new ServiceListAdapter(context, serviceList, new View.OnClickListener() {
@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.rlService:
int pos = (int) v.getTag();
serviceList.remove(position);
break;
}
}
});
下面是我的代码片段:
v.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
int newPosition = MainActivity.mRecyclerView.getChildAdapterPosition(v);
Intent cardViewIntent = new Intent(c, MainActivityCards.class);
cardViewIntent.putExtra("Position", newPosition);
c.startActivity(cardViewIntent);
}
});
v是onCreateViewHolder的视图 c为背景信息
对于kotlin句柄,根据Jacobs的回答单击RecyclerView答案
创建类RecyclerItemClickListener:
class RecyclerItemClickListener(context: Context, recyclerView: RecyclerView, listner: OnItemClickListener) : RecyclerView.OnItemTouchListener {
var mGestureDetector: GestureDetector
var mListner: OnItemClickListener
interface OnItemClickListener {
fun onItemClick(view: View, position: Int)
fun onLongItemClick(view: View, position: Int)
}
init {
this.mListner = listner
mGestureDetector = GestureDetector(context, object : GestureDetector.SimpleOnGestureListener() {
override fun onSingleTapUp(e: MotionEvent?): Boolean = true
override fun onLongPress(e: MotionEvent?) {
val child: View? = recyclerView.findChildViewUnder(e!!.getX(), e.getY())
if (child != null && mListner != null) {
mListner.onLongItemClick(child, recyclerView.getChildAdapterPosition(child))
}
}
})
}
override fun onTouchEvent(rv: RecyclerView, e: MotionEvent) = Unit
override fun onInterceptTouchEvent(view: RecyclerView, e: MotionEvent): Boolean {
val childView: View? = view.findChildViewUnder(e!!.getX(), e.getY())
if (childView != null && mListner != null && mGestureDetector.onTouchEvent(e)) {
mListner.onItemClick(childView, view.getChildAdapterPosition(childView))
return true
}
return false
}
override fun onRequestDisallowInterceptTouchEvent(disallowIntercept: Boolean) = Unit
}
点击Any RecyclerView(在活动/片段内):
recyclerView.addOnItemTouchListener(
RecyclerItemClickListener(this, recyclerView, object : RecyclerItemClickListener.OnItemClickListener {
override fun onItemClick(view: View, position: Int) {
// TODO catch click
}
override fun onLongItemClick(view: View, position: Int) {
// TODO catch click
}
})
)
如果你想在个别项目上捕捉点击事件,那么只需在ViewHolder类中实现OnClickListener,然后在个别视图或整个itemView上设置点击侦听器。
下面的例子说明了同样的情况
public class ContactViewHolder extends RecyclerView.ViewHolder implements OnClickListener
{
TextView txt_title,txt_name,txt_email;
public ContactViewHolder(View itemView)
{
super(itemView);
txt_title = (TextView)itemView.findViewById(R.id.txt_title);
txt_name = (TextView)itemView.findViewById(R.id.txt_name);
txt_email = (TextView)itemView.findViewById(R.id.txt_email);
txt_name.setOnClickListener(this);
txt_email.setOnClickListener(this);
itemView.setOnClickListener(this);
}
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
if(v == itemView)
{
Toast.makeText(RecyclerDemoActivity.this, "Visiting Card Clicked is ==>"+txt_name.getText(), Toast.LENGTH_SHORT).show();
}
if(v == txt_name)
{
Toast.makeText(RecyclerDemoActivity.this, "Name ==>"+txt_name.getText(), Toast.LENGTH_SHORT).show();
}
if(v == txt_email)
{
Toast.makeText(RecyclerDemoActivity.this, "Email ==>"+txt_email.getText(), Toast.LENGTH_SHORT).show();
}
}
}
}
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