如何滚动时改变RecyclerView内容 [英] How to change contents of RecyclerView while scrolling
问题描述
我用 RecyclerView
要显示的项目名称。我行包含单个的TextView
。项目名称都存储在名单,其中,字符串> mItemList
。
要修改 RecyclerView
的内容,我替换字符串中的 mItemList
并调用 notifyDataSetChanged
()在 RecyclerViewAdapter
。
但是,如果我试图改变内容的 mItemList
而RecyclerView正在滚动,有时它给了我
java.lang.IndexOutOfBoundsException:不一致检测。无效的项目位置157(偏移:157).state:588
这会发生,如果 mItemList
的尺寸比以前少了。那么,什么是改变 RecyclerView
内容的正确方法是什么?这是 RecyclerView
?
下面是异常的完整的堆栈跟踪:
java.lang.IndexOutOfBoundsException:不一致检测。无效的项目位置157(偏移:157).state:588
在android.support.v7.widget.RecyclerView $ Recycler.getViewForPosition(RecyclerView.java:3300)
在android.support.v7.widget.RecyclerView $ Recycler.getViewForPosition(RecyclerView.java:3258)
在android.support.v7.widget.LinearLayoutManager $ LayoutState.next(LinearLayoutManager.java:1803)
在android.support.v7.widget.LinearLayoutManager.layoutChunk(LinearLayoutManager.java:1302)
在android.support.v7.widget.LinearLayoutManager.fill(LinearLayoutManager.java:1265)
在android.support.v7.widget.LinearLayoutManager.scrollBy(LinearLayoutManager.java:1093)
在android.support.v7.widget.LinearLayoutManager.scrollVerticallyBy(LinearLayoutManager.java:956)
在android.support.v7.widget.RecyclerView $ ViewFlinger.run(RecyclerView.java:2715)
在android.view.Choreographer $ CallbackRecord.run(Choreographer.java:725)
在android.view.Choreographer.doCallbacks(Choreographer.java:555)
在android.view.Choreographer.doFrame(Choreographer.java:524)
在android.view.Choreographer $ FrameDisplayEventReceiver.run(Choreographer.java:711)
在android.os.Handler.handleCallback(Handler.java:615)
在android.os.Handler.dispatchMessage(Handler.java:92)
在android.os.Looper.loop(Looper.java:137)
在android.app.ActivityThread.main(ActivityThread.java:4921)
在java.lang.reflect.Method.invokeNative(本机方法)
在java.lang.reflect.Method.invoke(Method.java:511)
在com.android.internal.os.ZygoteInit $ MethodAndArgsCaller.run(ZygoteInit.java:1027)
在com.android.internal.os.ZygoteInit.main(ZygoteInit.java:794)
在dalvik.system.NativeStart.main(本机方法)
适配器视图code:
私有静态类FileListAdapter扩展RecyclerView.Adapter< FileHolder> {
私人最终语境mContext;
私人最终SparseBooleanArray mSelectedArray;
私人最终名单,其中,字符串> mList;
FileListAdapter(上下文的背景下,列表与LT;字符串>清单,SparseBooleanArray selectedArray){
mList =清单;
mContext =背景;
mSelectedArray = selectedArray;
}
@覆盖
公共FileHolder onCreateViewHolder(ViewGroup中的ViewGroup,int i)以{
查看查看= LayoutInflater.from(viewGroup.getContext())。膨胀(
R.layout.file_list_item,ViewGroup中,假);
TextView的电视=(TextView中)查看
.findViewById(R.id.file_name_text);
字体的字体= Typeface.createFromAsset(viewGroup.getContext()。getAssets(),
。viewGroup.getContext()的getString(R.string.roboto_regular));
tv.setTypeface(字体);
返回新FileHolder(视图,电视);
}
@覆盖
公共无效onBindViewHolder(FileHolder fileHolder,最终int i)以{
字符串名称= mList.get(我);
如果选择//突出看法
的setSelected(fileHolder.itemView,mSelectedArray.get(I));
//设置文本
fileHolder.mTextView.setText(名称);
}
@覆盖
公众诠释getItemCount(){
返回mList.size();
}
}
私有静态类FileHolder扩展RecyclerView.ViewHolder {
公众最后的TextView mTextView;
公共FileHolder(查看ItemView控件,TextView的电视){
超(ItemView控件);
mTextView =电视;
}
}
这似乎是在 RecyclerView
中的错误,有报道<一href="https://$c$c.google.com/p/android/issues/detail?can=1&q=77846&colspec=ID%20Type%20Status%20Owner%20Summary%20Stars&id=77846">here和这里。希望这将是固定在下一版本中。
I'm using RecyclerView
to display name of the items. My row contains single TextView
. Item names are stored in List<String> mItemList
.
To change contents of RecyclerView
, I replace Strings in mItemList
and call notifyDataSetChanged
() on RecyclerViewAdapter
.
But If I try to change contents of the mItemList
while RecyclerView is scrolling, sometimes it gives me
java.lang.IndexOutOfBoundsException: Inconsistency detected. Invalid item position 157(offset:157).state:588
This happens if size of mItemList
is less than before. So what is the correct way to change contents of the RecyclerView
? Is this a bug in RecyclerView
?
Here's full stack trace of Exception:
java.lang.IndexOutOfBoundsException: Inconsistency detected. Invalid item position 157(offset:157).state:588
at android.support.v7.widget.RecyclerView$Recycler.getViewForPosition(RecyclerView.java:3300)
at android.support.v7.widget.RecyclerView$Recycler.getViewForPosition(RecyclerView.java:3258)
at android.support.v7.widget.LinearLayoutManager$LayoutState.next(LinearLayoutManager.java:1803)
at android.support.v7.widget.LinearLayoutManager.layoutChunk(LinearLayoutManager.java:1302)
at android.support.v7.widget.LinearLayoutManager.fill(LinearLayoutManager.java:1265)
at android.support.v7.widget.LinearLayoutManager.scrollBy(LinearLayoutManager.java:1093)
at android.support.v7.widget.LinearLayoutManager.scrollVerticallyBy(LinearLayoutManager.java:956)
at android.support.v7.widget.RecyclerView$ViewFlinger.run(RecyclerView.java:2715)
at android.view.Choreographer$CallbackRecord.run(Choreographer.java:725)
at android.view.Choreographer.doCallbacks(Choreographer.java:555)
at android.view.Choreographer.doFrame(Choreographer.java:524)
at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:711)
at android.os.Handler.handleCallback(Handler.java:615)
at android.os.Handler.dispatchMessage(Handler.java:92)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:4921)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:511)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1027)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:794)
at dalvik.system.NativeStart.main(Native Method)
AdapterView code:
private static class FileListAdapter extends RecyclerView.Adapter<FileHolder> {
private final Context mContext;
private final SparseBooleanArray mSelectedArray;
private final List<String> mList;
FileListAdapter(Context context, List<String> list, SparseBooleanArray selectedArray) {
mList = list;
mContext = context;
mSelectedArray = selectedArray;
}
@Override
public FileHolder onCreateViewHolder(ViewGroup viewGroup, int i) {
View view = LayoutInflater.from(viewGroup.getContext()).inflate(
R.layout.file_list_item, viewGroup, false);
TextView tv = (TextView) view
.findViewById(R.id.file_name_text);
Typeface font = Typeface.createFromAsset(viewGroup.getContext().getAssets(),
viewGroup.getContext().getString(R.string.roboto_regular));
tv.setTypeface(font);
return new FileHolder(view, tv);
}
@Override
public void onBindViewHolder(FileHolder fileHolder, final int i) {
String name = mList.get(i);
// highlight view if selected
setSelected(fileHolder.itemView, mSelectedArray.get(i));
// Set text
fileHolder.mTextView.setText(name);
}
@Override
public int getItemCount() {
return mList.size();
}
}
private static class FileHolder extends RecyclerView.ViewHolder {
public final TextView mTextView;
public FileHolder(View itemView, TextView tv) {
super(itemView);
mTextView = tv;
}
}
It seems to be a bug in RecyclerView
, it's reported here and here. Hopefully it will be fixed in the next release.
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