Question

下面是我的适配器代码和日志（日志标签是“jieke”），问题是它有时无法在列表中显示整个项目，比如只显示8项，同时列表大小为10！在日志中看到：getCount返回10，getView也调用了10次，但我仍然只看到8次查看，为什么？

public class NumberAdapter extends BaseAdapter{
    private LayoutInflater mInflater;
    private ArrayList<NumberModel> mPhoneNumberList;

    public NumberAdapter(Context context, ArrayList<NumberModel> phoneNumberList){
        mInflater = LayoutInflater.from(context);
        mPhoneNumberList = phoneNumberList;
    }

    @Override
    public int getCount() {
        if (mPhoneNumberList != null) {
            LogUtils.d("jieke", "count="+mPhoneNumberList.size() );
            return mPhoneNumberList.size();
        }
        return 0;
    }

    @Override
    public Object getItem(int position) {
        if (position > -1 && mPhoneNumberList != null && position < mPhoneNumberList.size()) {
            return mPhoneNumberList.get(position);
        }
        return null;
    }

    public void setPhoneNumberList(ArrayList<NumberModel> phoneNumberList){
        mPhoneNumberList = phoneNumberList;
    }

    @Override
    public long getItemId(int position) {
        return position;
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        LogUtils.d("jieke", "get view on position= " +position );
        ItemViewTag viewTag;
        if (convertView == null)  {  
            convertView = mInflater.inflate(R.layout.grid_item_custom_number, null);
            viewTag = new ItemViewTag((ImageView) convertView.findViewById(R.id.item_image)
                ,(ImageView) convertView.findViewById(R.id.item_phone)
                , (TextView) convertView.findViewById(R.id.item_text));  
            convertView.setTag(viewTag);  
        } else {  
            viewTag = (ItemViewTag) convertView.getTag();  
        }
        return convertView;  
    }

    class ItemViewTag { 
        protected ImageView mIcon;  
        protected ImageView mPhone;
        protected TextView mName;
        public ItemViewTag(ImageView icon, ImageView phone, TextView name){  
            this.mName = name;  
            this.mIcon = icon;  
            this.mPhone = phone;  
    }  
}

}

这是Log：

05-13 21:20:24.975 D/absec.:CustomServiceNumberTabItemView(18651):  reset adaptor this=1
05-13 21:20:24.975 D/absec.:jieke(18651): count=10
05-13 21:20:24.975 D/absec.:jieke(18651): count=10
05-13 21:20:24.975 D/absec.:CustomServiceNumberTabItemView(18651):  notify change this=1
05-13 21:20:24.975 D/absec.:jieke(18651): count=10
05-13 21:20:24.975 D/absec.:jieke(18651): count=10
05-13 21:20:24.975 I/absec.:QBaseTabView(18651): onResume
05-13 21:20:24.985 D/absec.:jieke(18651): count=10
05-13 21:20:24.985 D/absec.:jieke(18651): get view on position= 0
05-13 21:20:24.985 D/absec.:jieke(18651): count=10
05-13 21:20:24.985 D/absec.:jieke(18651): get view on position= 0
05-13 21:20:24.985 D/absec.:jieke(18651): count=10
05-13 21:20:24.985 D/absec.:jieke(18651): get view on position= 0
05-13 21:20:24.985 D/absec.:jieke(18651): count=10
05-13 21:20:24.985 D/absec.:jieke(18651): get view on position= 0
05-13 21:20:25.005 D/absec.:jieke(18651): get view on position= 0
05-13 21:20:25.015 D/absec.:jieke(18651): get view on position= 1
05-13 21:20:25.015 D/absec.:jieke(18651): get view on position= 2
05-13 21:20:25.015 D/absec.:jieke(18651): get view on position= 3
05-13 21:20:25.015 D/absec.:jieke(18651): get view on position= 4
05-13 21:20:25.035 D/absec.:jieke(18651): get view on position= 5
05-13 21:20:25.035 D/absec.:jieke(18651): get view on position= 6
05-13 21:20:25.035 D/absec.:CustomServiceActivity(18651):  values=is_common=1
05-13 21:20:25.045 D/absec.:jieke(18651): get view on position= 7
05-13 21:20:25.045 D/absec.:CustomServiceActivity(18651):  values=is_common=1
05-13 21:20:25.055 D/absec.:jieke(18651): get view on position= 8
05-13 21:20:25.055 D/absec.:jieke(18651): get view on position= 9
05-13 21:20:25.065 D/absec.:CustomServiceActivity(18651):  values=is_common=1
05-13 21:20:25.075 D/absec.:CustomServiceActivity(18651):  values=is_common=1
05-13 21:20:25.085 D/absec.:CustomServiceActivity(18651):  values=is_common=1
05-13 21:20:25.095 D/absec.:CustomServiceActivity(18651):  values=is_common=1
05-13 21:20:25.105 D/absec.:CustomServiceActivity(18651):  values=is_common=1
05-13 21:20:25.115 D/absec.:CustomServiceActivity(18651):  values=is_common=1
05-13 21:20:25.125 D/absec.:CustomServiceActivity(18651):  values=is_common=1
05-13 21:20:25.135 D/absec.:CustomServiceActivity(18651):  values=is_common=1
05-13 21:20:25.265 D/absec.:CustomServiceNumberAddActivity(18651): AddActivity destroy

实际上，我只需要在mPhoneNumberList更改后刷新gridView（在一些mPhoneNumberList.add（）或mPhoneNumberList.remove（）之后）但我发现使用NumberAdapter.notifyDataSetChanged（）不起作用，所以每次我创建一个新的Adapter并且使用GridView.setAdapter（newNumberAdapter）重置GridView，它可以工作，但有时会发生问题。

在GridView.setAdapter（newNumberAdapter）之后
问题解决了添加此GridView.invalidateViews（）适合我！

Answer 1

我相信您正在使用 Asynctask 。在 doInBackground（字符串）中使用arraylist ArrayList<NumberModel> mPhoneNumberList（您在适配器的构造函数中作为参数发送） asynctask的... params），如：mPhoneNumberList=new ArrayList<NumberModel> ，而不是在onCreate（）中创建实例。

尝试解决方案。我相信您的适配器将会刷新。

Answer 2

在GridView.setAdapter（newNumberAdapter）之后

问题解决了添加此GridView.invalidateViews（）适合我！

为什么我的适配器无法刷新它的视图

2 个答案: