android listview 重复加载数据,解决listView数据重复加载

电玩女神 2022-10-14 00:39 460阅读 0赞

import java.util.ArrayList;

import java.util.HashMap;

import com.gta.virtualsimulation.R;

import com.gta.virtualsimulation.entity.EvaluationBean;

import android.content.Context;

import android.view.LayoutInflater;

import android.view.View;

import android.view.ViewGroup;

import android.widget.BaseAdapter;

import android.widget.LinearLayout;

import android.widget.RadioButton;

import android.widget.RadioGroup;

import android.widget.RadioGroup.OnCheckedChangeListener;

import android.widget.TextView;

import android.widget.Toast;

public class GroupAdapter extends BaseAdapter \{

private Context context;

private ArrayList lists;

private HashMap answer = new HashMap();

HashMap convertViewList = new HashMap();

public GroupAdapter(Context context,ArrayList lists)\{

this.context = context;

this.lists = lists;

@Override

public int getCount() \{

return lists.size();

@Override

public Object getItem(int position) \{

return lists.get(position);

@Override

public long getItemId(int position) \{

return position;

@Override

public View getView(int position, View convertView, ViewGroup parent) \{

ViewHolder holder = null;

if(null == convertViewList.get(position))\{

holder = new ViewHolder();

convertView = LayoutInflater.from(context).inflate(R.layout.testing\_item\_layout, null);

holder.title = (TextView) convertView.findViewById(R.id.title);

holder.groups = (RadioGroup) convertView.findViewById(R.id.group);

convertViewList.put(position, convertView);

convertView.setTag(holder);

\}else\{

convertView = convertViewList.get(position);

holder = (ViewHolder) convertView.getTag();

EvaluationBean bean = lists.get(position);

holder.title.setText(isEmpty(bean.getTitle()));

//if(null == holder.title.getTag())\{

//holder.title.setTag(isEmpty(bean.getTitle()));

//holder.title.setText(isEmpty(bean.getTitle()));

//\}else if(null != holder.title.getTag() && isEmpty(bean.getTitle()).equals(holder.title.getTag()))\{

//\}

//避免选项重复加载

if(holder.groups.getChildCount() == 0)

makeRadioBtn(holder.groups,bean);

return convertView;

class ViewHolder\{

TextView title;

RadioGroup groups;

/\*\*

\* 动态添加radioButton

\* @param group

\* @param options

\*/

private void makeRadioBtn(RadioGroup group,final EvaluationBean bean)\{

String\[\] list = bean.getOptions().split(",");

for(int i=0; i< list.length; i++)

RadioButton tempButton = new RadioButton(context);

// tempButton.setBackgroundResource(R.drawable.xxx); // 设置RadioButton的背景图片

// tempButton.setButtonDrawable(R.drawable.xxx); // 设置按钮的样式

tempButton.setPadding(10, 0, 0, 0); // 设置文字距离按钮四周的距离

tempButton.setText(list\[i\]);

group.addView(tempButton, LinearLayout.LayoutParams.MATCH\_PARENT, LinearLayout.LayoutParams.WRAP\_CONTENT);

group.setOnCheckedChangeListener(new OnCheckedChangeListener() \{

@Override

public void onCheckedChanged(RadioGroup group, int checkedId) \{

// TODO Auto-generated method stub

RadioButton tempButton = (RadioButton)group.findViewById(checkedId); // 通过RadioGroup的findViewById方法，找到ID为checkedID的RadioButton

// 以下就可以对这个RadioButton进行处理了

// Toast.makeText(context, "您选择了 = " + tempButton.getText().toString(), Toast.LENGTH\_LONG).show();

answer.put(bean.getTitle(), bean.getQuestionId()+"\_" +tempButton.getText().toString());

\});

public static String isEmpty(String str) \{

String value = "";

if (null == str.trim())

return value;

else

return str;

public HashMap getAnswer() \{

return answer;

public void setAnswer(HashMap answer) \{

this.answer = answer;

android listview 重复加载数据,解决listView数据重复加载

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