为了在创建活动后调用 API，我需要为“0”索引的 RecyclerView 项执行单击事件。
为此，我在 onBindviewHolder 中调用了 holder.view.performClick 事件。但问题是我需要在 onClick 事件中调用 notifydataSetChanged() 方法来更新适配器。最初，它会自动单击位置“0”并调用 notifydataSetChanged() 方法并崩溃。这个问题的解决方案是什么？请帮助。
public void onBindViewHolder(ViewHolder holder, int position) {
if (position==0){
holder.itemView.performClick();
}
我在 MainActivity.class 中调用这个接口
public void onRecyclerViewItemClick(@NonNull View view, @NonNull CalendarDTO calendarDTO, int position) {
isClickedPosition=position;
adapter.notifyDataSetChanged();
Toast.makeText(this, calendarDTO.getDate(), Toast.LENGTH_SHORT).show();
}
请检查错误：-
FATAL EXCEPTION: main
Process: in.playin.calendarrecyclerview, PID: 4063
java.lang.IllegalStateException: Cannot call this method while RecyclerView is computing a layout or scrolling
at android.support.v7.widget.RecyclerView.assertNotInLayoutOrScroll(RecyclerView.java:2575)
at android.support.v7.widget.RecyclerView$RecyclerViewDataObserver.onChanged(RecyclerView.java:4932)
at android.support.v7.widget.RecyclerView$AdapterDataObservable.notifyChanged(RecyclerView.java:11359)
at android.support.v7.widget.RecyclerView$Adapter.notifyDataSetChanged(RecyclerView.java:6636)
at in.playin.calendarrecyclerview.CalendarRecyclerViewAdapter$ViewHolder$1.onClick(CalendarRecyclerViewAdapter.java:115)
at android.view.View.performClick(View.java:5207)
at in.playin.calendarrecyclerview.CalendarRecyclerViewAdapter.onBindViewHolder(CalendarRecyclerViewAdapter.java:59)
at in.playin.calendarrecyclerview.CalendarRecyclerViewAdapter.onBindViewHolder(CalendarRecyclerViewAdapter.java:22)
at android.support.v7.widget.RecyclerView$Adapter.onBindViewHolder(RecyclerView.java:6356)
at android.support.v7.widget.RecyclerView$Adapter.bindViewHolder(RecyclerView.java:6389)
at android.support.v7.widget.RecyclerView$Recycler.tryBindViewHolderByDeadline(RecyclerView.java:5335)
at android.support.v7.widget.RecyclerView$Recycler.tryGetViewHolderForPositionByDeadline(RecyclerView.java:5598)
at android.support.v7.widget.RecyclerView$Recycler.getViewForPosition(RecyclerView.java:5440)
at android.support.v7.widget.RecyclerView$Recycler.getViewForPosition(RecyclerView.java:5436)
at android.support.v7.widget.LinearLayoutManager$LayoutState.next(LinearLayoutManager.java:2224)
at android.support.v7.widget.LinearLayoutManager.layoutChunk(LinearLayoutManager.java:1551)
at android.support.v7.widget.LinearLayoutManager.fill(LinearLayoutManager.java:1511)
at android.support.v7.widget.LinearLayoutManager.onLayoutChildren(LinearLayoutManager.java:595)
at android.support.v7.widget.RecyclerView.dispatchLayoutStep2(RecyclerView.java:3583)
at android.support.v7.widget.RecyclerView.onMeasure(RecyclerView.java:3025)
at android.view.View.measure(View.java:18809)
at android.widget.RelativeLayout.measureChildHorizontal(RelativeLayout.java:715)
at android.widget.RelativeLayout.onMeasure(RelativeLayout.java:461)
at android.view.View.measure(View.java:18809)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5955)
at android.widget.FrameLayout.onMeasure(FrameLayout.java:194)
at android.support.v7.widget.ContentFrameLayout.onMeasure(ContentFrameLayout.java:139)
at android.view.View.measure(View.java:18809)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5955)
at android.support.v7.widget.ActionBarOverlayLayout.onMeasure(ActionBarOverlayLayout.java:393)
at android.view.View.measure(View.java:18809)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5955)
at android.widget.FrameLayout.onMeasure(FrameLayout.java:194)
at android.view.View.measure(View.java:18809)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5955)
at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1465)
at android.widget.LinearLayout.measureVertical(LinearLayout.java:748)
at android.widget.LinearLayout.onMeasure(LinearLayout.java:630)
at android.view.View.measure(View.java:18809)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5955)
at android.widget.FrameLayout.onMeasure(FrameLayout.java:194)
at com.android.internal.policy.PhoneWindow$DecorView.onMeasure(PhoneWindow.java:2643)
at android.view.View.measure(View.java:18809)
at android.view.ViewRootImpl.performMeasure(ViewRootImpl.java:2112)
at android.view.ViewRootImpl.measureHierarchy(ViewRootImpl.java:1228)
at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1464)
at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1119)
at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:6060)
at android.view.Choreographer$CallbackRecord.run(Choreographer.java:858)
试试这个
在 OnBindViewHolder 中
public static boolean isPerformClicked;
int performClickCount;
@Override
public void onBindViewHolder(ViewHolder viewHolder, int i) {
if (i==0){
viewHolder.tv_android.setBackgroundColor(Color.RED);
if (performClickCount==0){
isPerformClicked = true;
viewHolder.itemView.performClick();
}else{
viewHolder.tv_android.setBackgroundColor(Color.RED);
}
}else{
isPerformClicked=false;
performClickCount = performClickCount+1;
viewHolder.tv_android.setBackgroundColor(Color.YELLOW);
}
if (i!=BlankFragment.selectedPosition){
viewHolder.tv_android.setBackgroundColor(Color.YELLOW);
}else{
viewHolder.tv_android.setBackgroundColor(Color.RED);
}
viewHolder.tv_android.setText(android_versions.get(i).getAndroid_version_name());
Picasso.with(context).load(android_versions.get(i).getAndroid_image_url()).resize(120, 60).into(viewHolder.img_android);
}
在持有人项目点击或项目
@Override
public void onRecyclerViewItemClick(@NonNull View view, @NonNull AndroidVersion calendarDTO, int position) {
selectedPosition=position;
Toast.makeText(getContext(),String.valueOf(position), Toast.LENGTH_SHORT).show();
if (!isPerformClicked){
adapter.notifyDataSetChanged();
}
}
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