我是android新手并试图创建一个问题的列表视图，有两种类型，mcq和true-false， 还有一个问题textview和一个提交按钮，有一个带4个单选按钮的无线电组，根据问题的类型，我隐藏了2个单选按钮，使它看起来像真假问题，到目前为止一切正常。 ..
当我检查任何单选按钮并向下或向上滚动时出现问题，即使在存储选择了哪个选项后，该按钮也不会保持其状态，如果找到存储选项，则检查单选按钮，但不显示在UI中检查，而不是在某些其他问题中显示已检查或有时检查不同的单选按钮..
这是我的适配器代码
public class QuestionAdapter extends BaseAdapter
{
private ArrayList<QuestionsGetSet> data;
private Context acontext;
private LayoutInflater inflater;
private String TAG="QuestionAdapter";
public QuestionAdapter(Context a, ArrayList<QuestionsGetSet> q)
{
acontext = a;
data = q;
}
@Override
public int getCount()
{
return data.size();
}
@Override
public Object getItem(int arg0)
{
return data.get(arg0);
}
@Override
public long getItemId(int arg0)
{
return 0;
}
@Override
public View getView(int arg0, View arg1, ViewGroup arg2)
{
holder hv=null;
final int postion = arg0;
if (arg1 == null)
{
inflater = (LayoutInflater) acontext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
arg1 = inflater.inflate(R.layout.question_feed, null);
hv = new holder();
hv.question = (TextView) arg1.findViewById(R.id.question_content_tv);
hv.answer = (TextView) arg1.findViewById(R.id.question_answer_tv);
hv.id = (TextView) arg1.findViewById(R.id.question_id_tv);
hv.counter = (TextView) arg1.findViewById(R.id.question_counter_tv);
hv.r_goup = (RadioGroup) arg1.findViewById(R.id.question_radio_group);
hv.option1 = (RadioButton) arg1.findViewById(R.id.question_option_1);
hv.option2 = (RadioButton) arg1.findViewById(R.id.question_option_2);
hv.option3 = (RadioButton) arg1.findViewById(R.id.question_option_3);
hv.option4 = (RadioButton) arg1.findViewById(R.id.question_option_4);
hv.submit_btn = (Button) arg1.findViewById(R.id.question_submit_btn);
hv.r_goup.setOnCheckedChangeListener(new OnCheckedChangeListener()
{
@Override
public void onCheckedChanged(RadioGroup arg0, int arg1)
{
Log.d(TAG,"inside oncheckedchanged, position="+postion);
data.get(postion).set_ischecked(true);
switch (arg1)
{
case R.id.question_option_1:
Log.d(TAG,"Option 1 checked");
data.get(postion).set_whichISchecked(1);
break;
case R.id.question_option_2:
Log.d(TAG,"Option 2 checked");
data.get(postion).set_whichISchecked(2);
break;
case R.id.question_option_3:
Log.d(TAG,"Option 3 checked");
data.get(postion).set_whichISchecked(3);
break;
case R.id.question_option_4:
Log.d(TAG,"Option 4 checked");
data.get(postion).set_whichISchecked(4);
break;
}
}
});
arg1.setTag(hv);
}
else
{
hv = (holder) arg1.getTag();
}
QuestionsGetSet qgs = data.get(postion);
if(qgs.get_ischecked())
{
Log.d(TAG,"inside if of is checked");
int i=qgs.get_whichISchecked();
Log.d(TAG,"inside if of is checked, which is check="+i);
switch(i)
{
case 1:
hv.option1.setChecked(true);
hv.option2.setChecked(false);
hv.option3.setChecked(false);
hv.option4.setChecked(false);
break;
case 2:
hv.option2.setChecked(true);
hv.option1.setChecked(false);
hv.option3.setChecked(false);
hv.option4.setChecked(false);
break;
case 3:
hv.option3.setChecked(true);
hv.option1.setChecked(false);
hv.option2.setChecked(false);
hv.option4.setChecked(false);
break;
case 4:
hv.option4.setChecked(true);
hv.option1.setChecked(false);
hv.option2.setChecked(false);
hv.option3.setChecked(false);
break;
}
}
else if(!qgs.get_ischecked())
{
Log.d(TAG,"inside else of is checked");
hv.option1.setChecked(false);
hv.option2.setChecked(false);
hv.option3.setChecked(false);
hv.option4.setChecked(false);
}
/*** below all code is working fine ***/
/// used to create a true-false or mcq type ui, working fine
if (qgs.get_isBool())
{
hv.option1.setText("True");
hv.option2.setText("False");
hv.option3.setVisibility(View.GONE);
hv.option4.setVisibility(View.GONE);
} else
{
hv.option1.setText(qgs.get_option_1());
hv.option2.setText(qgs.get_option_2());
hv.option3.setVisibility(View.VISIBLE);
hv.option4.setVisibility(View.VISIBLE);
hv.option3.setText(qgs.get_option_3());
hv.option4.setText(qgs.get_option_4());
}
/// used to check if question can be submitted or not, working fine
if (qgs.get_isvalid() != null)
{
if (!qgs.get_isvalid())
{
hv.submit_btn.setText("Question Closed");
hv.submit_btn.setBackgroundResource(R.drawable.btn_invalid);
} else
{
hv.submit_btn.setText("Submit");
hv.submit_btn.setBackgroundResource(R.drawable.btn_valid);
}
}
/// used to check if answer is present, then showed to user, working fine
if (qgs.get_answer() != null)
{
hv.answer.setVisibility(View.VISIBLE);
hv.answer.setText(qgs.get_answer());
} else
{
hv.answer.setVisibility(View.GONE);
hv.answer.setText("");
}
hv.question.setText(qgs.get_question());
hv.id.setText(qgs.get_id() + "");
hv.counter.setText(qgs.get_counter() + "");
return arg1;
}
class holder
{
TextView question, answer, id, counter;
Button submit_btn;
RadioGroup r_goup;
RadioButton option1, option2, option3, option4;
}
}
这里是QuestionGetSet代码
public class QuestionsGetSet
{
private String question,answer,option_1,option_2,option_3,option_4;
private Boolean isBool=false,isvalid=false;
private long id,counter;
private Boolean isChecked=false;
private int whichISchecked;
public void set_ischecked(Boolean a)
{
this.isChecked=a;
}
public Boolean get_ischecked()
{
return this.isChecked;
}
public void set_whichISchecked(int a)
{
this.whichISchecked=a;
}
public int get_whichISchecked()
{
return this.whichISchecked;
}
public void set_question(String q)
{
this.question=q;
}
public String get_question()
{
return this.question;
}
public void set_answer(String q)
{
this.answer=q;
}
public String get_answer()
{
return this.answer;
}
public void set_option_1(String q)
{
this.option_1=q;
}
public String get_option_1()
{
return this.option_1;
}
public void set_option_2(String q)
{
this.option_2=q;
}
public String get_option_2()
{
return this.option_2;
}
public void set_option_3(String q)
{
this.option_3=q;
}
public String get_option_3()
{
return this.option_3;
}
public void set_option_4(String q)
{
this.option_4=q;
}
public String get_option_4()
{
return this.option_4;
}
public void set_isBool(Boolean q)
{
this.isBool=q;
}
public Boolean get_isBool()
{
return this.isBool;
}
public void set_isvalid(Boolean q)
{
this.isvalid=q;
}
public Boolean get_isvalid()
{
return this.isvalid;
}
public void set_id(long q)
{
this.id=q;
}
public long get_id()
{
return this.id;
}
public void set_counter(long q)
{
this.counter=q;
}
public long get_counter()
{
return this.counter;
}
}
答案 0 :(得分：0)
在QuestionAdapter类
中如果条件仅使用
，请不要使用else外汇
替换
else if(!qgs.get_ischecked())
要
else