我在getView()(PlanAdapter类)中添加了新的CheckBox
public View getView(int position, View convertView, ViewGroup viewGroup) {
Plan entry = listPlan.get(position);
if (convertView == null) {
LayoutInflater inflater = (LayoutInflater) context
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
convertView = inflater.inflate(R.layout.walkRow, null, false);
}
LinearLayout d = (LinearLayout)convertView.findViewById(R.id.checkBoxPlace);
TextView distance = (TextView) convertView.findViewById(R.id.distance);
distance.setText(" " + entry.getexerciseNumber());
TextView time = (TextView) convertView.findViewById(R.id.time);
time.setText(" " + entry.getwholeTime());
CheckBox chckStart = new CheckBox(context);
chckStart = entry.getCheckBox();
chckStart.setFocusable(false);
d.addView(chckStart); //here i get force close
return convertView;
}
当我向下滚动它看起来很好,但是当我向后滚动并向上滚动它时会崩溃。
计划类中的getter,setter
public CheckBox getCheckBox(){
return checkBox;
}
public void setCheckBox(CheckBox checkBox){
this.checkBox = checkBox;
}
和Main class中的checkBox
for (byte i = 0; i < db.planView.size(); i++) {
chcBox = new CheckBox(this);
chcBox.setId(i);
checkboxList.add(chcBox);
listOfPlan.add(new Plan(db.planView.get(i).getText().toString(), db
.count(db.planView.get(i).getText().toString(),
getApplicationContext()), chcBox));
}
日志:http://wklej.to/RpBvr/html
答案 0 :(得分:2)
您正尝试将每个复选框添加到多个父视图中,这是您无法做到的...
然而,ListView已经有很多功能来实现复选框,这里有一种方法:
public class Example extends Activity implements OnItemClickListener {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
String[] array = {"one", "two", "three"};
ArrayAdapter<String> adapter = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_multiple_choice, array);
ListView listView = (ListView) findViewById(R.id.list);
listView.setAdapter(adapter);
listView.setChoiceMode(ListView.CHOICE_MODE_SINGLE);
listView.setOnItemClickListener(this);
}
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
Log.v("Example", "ItemClick: " + ((ListView) parent).getCheckedItemPosition());
}
}
您只需传递自己的XML文件即可自定义布局。
<强>加成强>
每次显示一行时,您都会刷新entry
数据并尝试添加复选框,这就是您可以向下滚动但不能向上滚动的原因。如果您想保留自定义适配器,只需检查该行是否已经初始化,然后再尝试添加相同的值。