Question

android开发中的自定义适配器

public class CustomAdapter extends BaseAdapter {
Context context;
List<Detail> list;
LayoutInflater inflater;

public CustomAdapter(Context context,List<Detail> list) {
this.context=context;
this.list=list;
inflater=LayoutInflater.from(context);
}

@Override
public int getCount() {
// TODO Auto-generated method stub
return list.size();
}

@Override
public Object getItem(int arg0) {
// TODO Auto-generated method stub
return list.get(arg0);
}

@Override
public long getItemId(int arg0) {
// TODO Auto-generated method stub
return arg0;
}

@Override
public View getView(int arg0, View arg1, ViewGroup arg2) {
arg1=inflater.inflate(R.layout.list_style, null);
TextView textView=(TextView)arg1.findViewById(R.id.name);
TextView textView2=(TextView)arg1.findViewById(R.id.signature);
textView.setText(list.get(arg0).getName());
textView2.setText(list.get(arg0).getSignature());
return arg1;
}
}
请问为什么会出错？

Answer 1

arg1=inflater.inflate(R.layout.list_style, null);中的arg1是一个复用的视图，你每次都重新inflate一次，说明没有进行视图复用，如果list大小很大的时候，会出现内存溢出的错误。正确的写法是：

View view = arg1!=null?arg1:inflater.inflate(R.layout.list_style, null);
........
return view;

Answer 2

报什么错？