我有搜索功能的清单（使用了edittext）。当我使用它来搜索它时显示过滤的项目，以便我可以进行我想要的选择，它可以正常工作。但是，当搜索功能重新加载列表时，检查的项目将被取消选中。我希望在搜索之前选择的项目保持选中状态。我怎样才能解决这个问题？
这是我的代码：
public class Lab extends Fragment {
Button mViewBtn,msaveBtn;
EditText mReviewdateEdt,mInputSearch;
TextView mMostprecrdTxv,mViewmoreTxv;
View android;
// final Context context = getActivity();
MyCustomAdapter dataAdapter = null;
ListView listView;
DatabaseHandler db;
SQLiteDatabase db1;
Pharmacy mPharmacyFrag;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
android = inflater.inflate(R.layout.lab_frag, container, false);
db=new DatabaseHandler(getActivity());
getIds();
displayListView();
viewAlertDialog();
saveAlertdialog();
return android;
}
private void getIds() {
// TODO Auto-generated method stub
mViewBtn = (Button)android.findViewById(R.id.view);
msaveBtn = (Button)android.findViewById(R.id.save);
mInputSearch = (EditText)android.findViewById(R.id.inputSearch);
listView = (ListView)android.findViewById(R.id.list);
}
ArrayList<States> stateList = new ArrayList<States>();
ArrayList<States> text_sort = new ArrayList<States>();
private void displayListView()
{
stateList = new ArrayList<States>();
States _states = new States("17 KETOSTERIODS","",false);
stateList.add(_states);
_states = new States("17-ALPHA HYDROXY PROGESTERON","",false);
stateList.add(_states);
_states = new States("24 HRS URINE ALBUMIN","",false);
stateList.add(_states);
_states = new States("24HRS URINARYCORTISOL/CREATININE RATIO","",false);
stateList.add(_states);
_states = new States("24HRS URINE PROTEIN","",false);
stateList.add(_states);
_states = new States("2D ECHO","",false);
stateList.add(_states);
_states = new States("2D ECHO&DOPPLER STUDY","",false);
stateList.add(_states);
_states = new States("5-HYDROXY INDOLE ACETIC ACID","",false);
stateList.add(_states);
_states = new States("ABSOLUTE EOSINOPHIL COUNT","",false);
stateList.add(_states);
_states = new States("ABSOLUTE NEUTROPHILIC COUNT","",false);
stateList.add(_states);
dataAdapter = new MyCustomAdapter(getActivity().getBaseContext(),R.layout.state_info, stateList);
listView.setAdapter(dataAdapter);
mInputSearch.addTextChangedListener(new TextWatcher()
{
@Override
public void onTextChanged(CharSequence cs, int arg1, int arg2, int arg3)
{
int textlength = mInputSearch.getText().length();
text_sort.clear();
for (int i = 0; i < stateList.size(); i++)
{
System.out.println("firstlooop"+mInputSearch.getText().toString());
System.out.println("names"+stateList.get(i).getCode());
if (stateList.get(i).getCode().toLowerCase().contains(mInputSearch.getText().toString())||stateList.get(i).getCode().toUpperCase().contains(mInputSearch.getText().toString()))
{
States _states = new States(stateList.get(i).getCode(),"",false);
text_sort.add(_states);
System.out.println("Gdafdhujgkgj");
}
}
System.out.println("text_sort"+text_sort.size());
dataAdapter = new MyCustomAdapter(getActivity(),R.layout.state_info, text_sort);
listView.setAdapter(dataAdapter);
dataAdapter.notifyDataSetChanged();
}
@Override
public void beforeTextChanged(CharSequence arg0, int arg1, int arg2,
int arg3) {
// TODO Auto-generated method stub
}
@Override
public void afterTextChanged(Editable arg0) {
// TODO Auto-generated method stub
}
});
private class MyCustomAdapter extends ArrayAdapter<States>
{
private LayoutInflater vi;
private ArrayList<States> stateList;
public MyCustomAdapter(Context context, int textViewResourceId,
ArrayList<States> stateList)
{
super(context, textViewResourceId, stateList);
this.stateList = new ArrayList<States>();
this.stateList.addAll(stateList);
vi = (LayoutInflater)context.getSystemService(Activity.LAYOUT_INFLATER_SERVICE);
}
private class ViewHolder
{
TextView code;
CheckBox name;
}
@Override
public View getView(int position, View convertView, ViewGroup parent)
{
ViewHolder holder = null;
Log.v("ConvertView", String.valueOf(position));
if (convertView == null)
{
convertView = vi.inflate(R.layout.state_info, null);
holder = new ViewHolder();
holder.code = (TextView) convertView.findViewById(R.id.code);
holder.name =(CheckBox)convertView.findViewById(R.id.checkBox1);
convertView.setTag(holder);
holder.name.setOnClickListener( new View.OnClickListener()
{
public void onClick(View v)
{
CheckBox cb = (CheckBox) v;
States _state = (States) cb.getTag();
_state.setSelected(cb.isChecked());
}
});
}
else
{
holder = (ViewHolder) convertView.getTag();
}
States state = stateList.get(position);
holder.code.setText( state.getCode());
holder.name.setText(state.getName());
holder.name.setChecked(state.isSelected());
holder.name.setTag(state);
return convertView;
}
}
private void viewAlertDialog()
{
mViewBtn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View arg0) {
AlertDialog.Builder alertDialogBuilder = new AlertDialog.Builder(getActivity());
StringBuffer responseText = new StringBuffer();
ArrayList<States> stateList = dataAdapter.stateList;
for(int i=0;i<stateList.size();i++)
{
States state = stateList.get(i);
if(state.isSelected())
{
responseText.append("\n\n" + state.getCode());
}
}
final TextView myView = new TextView(getActivity());
myView.setText("Selected Tests are : \n"+responseText);
myView.setTextSize(14);
alertDialogBuilder.setCustomTitle(myView);
alertDialogBuilder.setCancelable(false);
alertDialogBuilder.setNegativeButton("Close",new DialogInterface.OnClickListener()
{
@Override
public void onClick(DialogInterface arg0, int arg1)
{
}
});
AlertDialog alertDialog = alertDialogBuilder.create();
alertDialog.show();
}
});
}
private void saveAlertdialog()
{
// TODO Auto-generated method stub
msaveBtn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View arg0) {
AlertDialog.Builder alertDialogBuilder = new AlertDialog.Builder(getActivity());
alertDialogBuilder.setMessage("Lab Orders Saved");
alertDialogBuilder.setCancelable(false);
alertDialogBuilder.setNegativeButton("PHARMACY",newDialogInterface.OnClickListener()
{
@Override
public void onClick(DialogInterface arg0, int arg1) {
int newFragmentNumber = 1;
((Tabswipe) getActivity()).setDisplayedFragment(newFragmentNumber);
}
});
AlertDialog alertDialog = alertDialogBuilder.create();
alertDialog.show();
StringBuffer responseText = new StringBuffer();
ArrayList<States> stateList = dataAdapter.stateList;
for(int i=0;i<stateList.size();i++)
{
States state = stateList.get(i);
if(state.isSelected())
{
responseText.append("\n" + state.getCode());
}
}
db1=db.getWritableDatabase();
ContentValues values=new ContentValues();
values.put("LabTests",String.valueOf(responseText));
db1.insert("Labtests", null, values);
Cursor cursor=db1.rawQuery("select * from Labtests", null);
if(cursor!=null)
{
if(cursor.moveToFirst())
{
do
{
String tests=cursor.getString(cursor.getColumnIndex("LabTests"));
}while(cursor.moveToNext());
}
}
}
});
}
}
public class States {
String code = null;
String name = null;
boolean selected = false;
public States(String code, String name, boolean selected)
{
super();
this.code = code;
this.name = name;
this.selected = selected;
}
public String getCode()
{
return code;
}
public void setCode(String code)
{
this.code = code;
}
public String getName()
{
return name;
}
public void setName(String name)
{
this.name = name;
}
public boolean isSelected()
{
return selected;
}
public void setSelected(boolean selected)
{
this.selected = selected;
}
}
答案 0 :(得分：0)
每次更改关联的编辑文本的值时，ListView都会回收视图。这就是Check-box不保留状态的原因。
完成任务：
将选中的项目存储在数组中。 单击列表视图中的任何复选框时，更改数组中该特定项的值。 在getView方法中，通过读取数组中的值来选中或取消选中复选框。 这样您的复选框将保留其状态。我希望这很清楚。