我创建了recycleview.That recycleview包含复选框。如果我点击recycleview中的第1项，则复选框被选中后我点击第2项意味着第1项和第2项复选框被选中。它工作正常但是我如果我点击第二项复选框，则取消选中第一个选中的项目。
public static class AddressAdapter1 extends RecyclerView.Adapter<AddressAdapter1.MyViewHolder> {
private int lastSelectedPosition = -1;
private final Context mcontext;
private AdapterView.OnItemClickListener onItemClickListener;
private AdapterView.OnItemLongClickListener onItemLongClickListener;
public ArrayList<Child> movieItems;
public static class MyViewHolder extends RecyclerView.ViewHolder {
public TextView address1,landmark1,building1,others_text;
public ImageView home,work,others,edit;
public CheckBox checkbox;
public MyViewHolder(View view) {
super(view);
address1 = (TextView) view.findViewById(R.id.address);
landmark1 = (TextView) view.findViewById(R.id.landmark);
building1 = (TextView) view.findViewById(R.id.building);
others_text = (TextView) view.findViewById(R.id.others_text);
others = (ImageView) view.findViewById(R.id.others);
home = (ImageView) view.findViewById(R.id.home);
work = (ImageView) view.findViewById(R.id.work);
edit = (ImageView) view.findViewById(R.id.edit);
checkbox = (CheckBox) view.findViewById(R.id.checkbox);
}
}
public AddressAdapter1(Context mcontext,ArrayList<Child> movieItems ) {
this.mcontext = mcontext;
this.movieItems = movieItems;
}
@Override
public MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View itemView = LayoutInflater.from(parent.getContext())
.inflate(R.layout.profile_list, parent, false);
return new MyViewHolder(itemView);
}
@Override
public void onBindViewHolder(final MyViewHolder holder, final int position) {
final Child m = movieItems.get(position);
holder.edit.setVisibility(View.GONE);
if (m.getaddress() != null) {
if (!m.getaddress().equals("null")) {
holder.address1.setText(m.getaddress());
}
if (m.getbuilding() != null) {
if (!m.getbuilding().equals("null")) {
holder.building1.setText("Building/Flatno: "+m.getbuilding());
}
if (m.getlandmark() != null) {
if (!m.getlandmark().equals("null")) {
holder.landmark1.setText("Landmark: "+m.getlandmark());
}
if (m.getaddress_type() != null) {
if (!m.getaddress_type().equals("null")) {
String type=m.getaddress_type();
if(type.equals("1")){
holder. home.setVisibility(View.VISIBLE);
holder. others_text.setText("Home");
}
else if(type.equals("2")){
holder. work.setVisibility(View.VISIBLE);
holder. home.setVisibility(View.GONE);
holder. others_text.setText("Work");
}
else{
holder.others.setVisibility(View.VISIBLE);
holder. home.setVisibility(View.GONE);
holder. others_text.setText("Other");
}
}
}
}
}
holder.checkbox.setChecked(m.isSelected());
holder.checkbox.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
int getPosition = (Integer) buttonView.getTag(); // Here we get the position that we have set for the checkbox using setTag.
movieItems.get(getPosition).setSelected(buttonView.isChecked());
final Child m=new Child();
m.setSelected(isChecked);
}
});
holder.checkbox.setTag(position);
}
}
@Override
public int getItemCount() {
return movieItems.size();
}
@Override
public int getItemViewType(int position) {
return position;
}
}
Logcat error
java.lang.IllegalStateException: Cannot call this method while RecyclerView is computing a layout or scrolling
at android.support.v7.widget.RecyclerView.assertNotInLayoutOrScroll(RecyclerView.java:2186)
at android.support.v7.widget.RecyclerView$RecyclerViewDataObserver.onChanged(RecyclerView.java:4255)
at android.support.v7.widget.RecyclerView$AdapterDataObservable.notifyChanged(RecyclerView.java:9945)
at android.support.v7.widget.RecyclerView$Adapter.notifyDataSetChanged(RecyclerView.java:5747)
at abservetech.com.foodapp.Checkinpage$AddressAdapter1$1.onCheckedChanged(Checkinpage.java:857)
at android.widget.CompoundButton.setChecked(CompoundButton.java:127)
at abservetech.com.foodapp.Checkinpage$AddressAdapter1.onBindViewHolder(Checkinpage.java:841)
at abservetech.com.foodapp.Checkinpage$AddressAdapter1.onBindViewHolder(Checkinpage.java:709)
at android.support.v7.widget.RecyclerView$Adapter.onBindViewHolder(RecyclerView.java:5471)
`
答案 0 :(得分：2)
在模型类中使用一个布尔值：
<td><button type="button"
class="table table-striped table-bordered table-condensed"
data-placement="top"
title= "{{ x.Recipient.Name
x.Recipient.Email_Address
x.Recipient.Job_Title
x.Recipient.Department
x.Recipient.Office }}"
onmouseenter="$(this).tooltip('show')">
{{ x.Recipient.Name }}
</button></td>
在适配器的onBindViewHolder中：
private boolean isCheck;
public boolean isCheck() {
return isCheck;
}
public void setCheck(boolean check) {
isCheck = check;
}
答案 1 :(得分：1)
试试这个：
private int lastSelectedPosition = -1; // adapter variable
holder.checkbox.setChecked(m.isSelected());
holder.checkbox.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
int getPosition = (Integer) buttonView.getTag(); // Here we get the position that we have set for the checkbox using setTag.
movieItems.get(getPosition).setSelected(buttonView.isChecked());
final Child m=new Child();
if (getPosition != lastSelectedPosition) {
m.setSelected(isChecked);
if (lastSelectedPosition != -1) {
movieItems.get(lastSelectedPosition ).setSelected(false) // unselect last selection
notifyItemChanged(lastSelectedPosition); // notify adapter
}
}
lastSelectedPosition = isChecked ? getPosition : -1; // remember last selected position
}
});
holder.checkbox.setTag(position);
<强>更新
要避免RecyclerView异常，请尝试在处理程序中包含notifyItemChanged调用：
Handler handler = new Handler();
final Runnable r = new Runnable() {
public void run() {
notifyItemChanged(lastSelectedPosition); // notify adapter
}
};
handler.post(r);