在列表复选框随机得到选中/取消当我翻阅。安卓2.3 [英] checkboxes in the List randomly get checked/unchecked when i scroll through. android 2.3
问题描述
我用我的自定义适配器。有一个复选框，并在每一行文本视图。 但我有一个问题。有在列表中比其适合屏幕上的数字更多的项目。
所以，当我检查所有的复选框的屏幕上，然后向下滚动。该自动获得听之任之。
当我向上滚动，又有些乱复选框得到检查。
我知道，在getView（）名单正在一次又一次地刷新和孤单的位置的问题。 但不知道该解决方案。
我使用的是布尔数组来跟踪都试过了。但二硝基甲苯知道如何正确地做到这一点。
cb.setOnCheckedChangeListener（新OnCheckedChangeListener（）{
@覆盖
公共无效onCheckedChanged（CompoundButton buttonView，
布尔器isChecked）{
itemChecked [指数] =器isChecked;
}
}）;
cb.setChecked（itemChecked [指数]）;
能否请你张贴一些code段，并详细解释。我累了自去年2周寻找这样......由于事先..
公开查看getChildView（最终诠释groupPosition，
最终诠释childPosition，布尔isLastChild，查看convertView，
ViewGroup中父）{
最后ViewHolder持有人;
//如果（convertView == NULL）{
持有人=新ViewHolder（）;
convertView = mInflater.inflate（
R.layout.expandableinner_custom_row，NULL）;
holder.textView =（TextView中）convertView
.findViewById（R.id.textView）;
holder.checkBox =（复选框）convertView
.findViewById（R.id.checkBox）;
字符串str = getChild（groupPosition，childPosition）的ToString（）;
holder.textView.setText（STR）;
布尔[] boolArr = SMSActivity.maintaingState.get（字符串
.valueOf（groupPosition））;
Log.i（BOOLARRAYSIZE，将String.valueOf（boolArr.length））;
Log.i（布尔，
将String.valueOf（boolArr [childPosition] +GrpPosition：
+ groupPosition +ChildPosition：
+ childPosition））;
如果（boolArr [childPosition]）{
holder.checkBox.setChecked（真正的）;
} 其他 {
holder.checkBox.setChecked（假）;
}
holder.checkBox
.setOnCheckedChangeListener（新OnCheckedChangeListener（）{
@覆盖
公共无效onCheckedChanged（
CompoundButton buttonView，
布尔器isChecked）{
// TODO自动生成方法存根
布尔[] boolArr = SMSActivity.maintaingState
获得（将String.valueOf（groupPosition））;
boolArr [childPosition] =器isChecked; //（对象）
Log.i（grpPosition
将String.valueOf（childPosition））;
Log.i（childPosition
将String.valueOf（groupPosition））;
SMSActivity.maintaingState.remove（字符串
.valueOf（groupPosition））;
SMSActivity.maintaingState.put（
将String.valueOf（groupPosition）
boolArr）;
Log.i（布尔，弦乐
.valueOf（boolArr [childPosition]
+GrpPosition：
+ groupPosition
+ChildPosition：
+ childPosition））;
}
}）;
convertView.setTag（保持器）;
返回convertView;
}
I am using my custom adapter. There is a checkbox and a text view in each row. But i have a problem. There are more items in the list than the number which fits on the screen.
So when i check any of the checkboxes on the screen and scroll down. The automatically get unchecked.
When i scroll up again some random checkboxes get checked.
I know that in getView() list is being refreshed again and again and theres an issue of the position. But dont know the solution.
I have tried using a boolean array to keep a track. but dnt know how to do it properly.
cb.setOnCheckedChangeListener(new OnCheckedChangeListener(){
@Override
public void onCheckedChanged(CompoundButton buttonView,
boolean isChecked) {
itemChecked[index]=isChecked;
}
});
cb.setChecked(itemChecked[index]);
Can you please post some code snippet and explain in detail. i am tired of searching this since last 2weeks... thanks in advance,..
public View getChildView(final int groupPosition,
final int childPosition, boolean isLastChild, View convertView,
ViewGroup parent) {
final ViewHolder holder;
//if (convertView == null) {
holder = new ViewHolder();
convertView = mInflater.inflate(
R.layout.expandableinner_custom_row, null);
holder.textView = (TextView) convertView
.findViewById(R.id.textView);
holder.checkBox = (CheckBox) convertView
.findViewById(R.id.checkBox);
String str = getChild(groupPosition, childPosition).toString();
holder.textView.setText(str);
Boolean[] boolArr = SMSActivity.maintaingState.get(String
.valueOf(groupPosition));
Log.i("BOOLARRAYSIZE ", String.valueOf(boolArr.length));
Log.i("Boolean",
String.valueOf(boolArr[childPosition] + "GrpPosition: "
+ groupPosition + "ChildPosition: "
+ childPosition));
if (boolArr[childPosition]) {
holder.checkBox.setChecked(true);
} else {
holder.checkBox.setChecked(false);
}
holder.checkBox
.setOnCheckedChangeListener(new OnCheckedChangeListener() {
@Override
public void onCheckedChanged(
CompoundButton buttonView,
boolean isChecked) {
// TODO Auto-generated method stub
Boolean[] boolArr = SMSActivity.maintaingState
.get(String.valueOf(groupPosition));
boolArr[childPosition] = isChecked;// (object)
Log.i("grpPosition",
String.valueOf(childPosition));
Log.i("childPosition",
String.valueOf(groupPosition));
SMSActivity.maintaingState.remove(String
.valueOf(groupPosition));
SMSActivity.maintaingState.put(
String.valueOf(groupPosition),
boolArr);
Log.i("Boolean", String
.valueOf(boolArr[childPosition]
+ " GrpPosition: "
+ groupPosition
+ "ChildPosition: "
+ childPosition));
}
});
convertView.setTag(holder);
return convertView;
}
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