我有一个自定义列表视图，其中包含一个edittext，复选框和两个文本视图。现在我在我的代码中遇到了edittext值的问题。我无法从edittext获取正确的值。如果我在列表中的一个位置设置编辑文本的值，该值也设置为listview中随机位置的edittexts。我有滚动时值的变化的常见问题。以下是代码：
活动：
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_assess_list);
prev = getIntent();
final ListView listview = (ListView) findViewById(R.id.studentsListView);
listview.setAdapter(new AssessmentAdapter(this, R.layout.assessment,
StudentNames.student_name, StudentNames.studentRollNo));
}
适配器：
public class AssessmentAdapter extends ArrayAdapter<String> {
Context context;
ViewHolder holder;
CheckBox present;
EditText marks;
int pos;
public static ArrayList<String> studentNames,studentRollNo,studentsPresent,marksObtainedList;
public AssessmentAdapter(Context context, int textViewResourceId,ArrayList<String> studentNames,ArrayList<String> studentRollNo) {
super(context, textViewResourceId,studentNames);
// TODO Auto-generated constructor stub
this.context=context;
AssessmentAdapter.studentNames=studentNames;
AssessmentAdapter.studentRollNo=studentRollNo;
studentsPresent=new ArrayList<String>();
marksObtainedList=new ArrayList<String>();
Log.d("No. of students",""+studentRollNo.size());
for(int i=0;i<studentNames.size();i++)
{
studentsPresent.add("1");
marksObtainedList.add("0");
}
}
static class ViewHolder {
CheckBox presentCB;
TextView name,Rno;
EditText marksObtained;
Button save;
}
public View getView(final int pos,View convertview,ViewGroup parent)
{
try
{
holder=null;
LayoutInflater inflater=(LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
if(convertview==null)
{
//rowView=inflater.inflate(org.example.attendance.R.layout.list_radio,parent,false);
convertview=inflater.inflate(R.layout.assessment,null);
holder=new ViewHolder();
holder.presentCB=(CheckBox)convertview.findViewById(org.example.attendance2.R.id.presentCB);
holder.name=(TextView)convertview.findViewById(org.example.attendance2.R.id.studNameTV);
holder.Rno=(TextView)convertview.findViewById(org.example.attendance2.R.id.studRollNoTV);
holder.marksObtained=(EditText)convertview.findViewById(org.example.attendance2.R.id.marksET);
holder.save=(Button)convertview.findViewById(org.example.attendance2.R.id.saveButton);
convertview.setTag(holder);
}
else
{
holder=(ViewHolder) convertview.getTag();
}
holder.name.setText(studentNames.get(pos));
holder.Rno.setText(studentRollNo.get(pos));
holder.save.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
}
});
holder.marksObtained.addTextChangedListener(new TextWatcher(){
@Override
public void afterTextChanged(Editable arg0) {
// TODO Auto-generated method stub
marksObtainedList.set(pos, arg0.toString());
}
@Override
public void beforeTextChanged(CharSequence arg0, int arg1, int arg2,
int arg3) {
// TODO Auto-generated method stub
}
@Override
public void onTextChanged(CharSequence arg0, int arg1, int arg2,
int arg3) {
// TODO Auto-generated method stub
}
});
holder.presentCB.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
if(studentsPresent.get(pos).equals("1"))
{
studentsPresent.set(pos, "0");
}
else
{
studentsPresent.set(pos, "1");
}
}
});
//if(RadioChecked[pos])
if(studentsPresent.get(pos).equals("1"))
{
holder.presentCB.setChecked(true);
}
// else if(!RadioChecked[pos])
else if(studentsPresent.get(pos).equals("0"))
{
holder.presentCB.setChecked(false);
}
if(holder.marksObtained.getText().toString().equals(""))
{
marksObtainedList.set(pos,"0");
}
else
{
String marks=holder.marksObtained.getText().toString();
marksObtainedList.set(pos,marks);
Log.d(""+pos,marksObtainedList.get(pos));
}
holder.marksObtained.setText(marksObtainedList.get(pos));
}catch(Exception e)
{
}
return convertview;
}
public boolean areAllItemsEnabled()
{
return true;
}
@Override
public boolean isEnabled(int arg0)
{
return true;
}
}