滚动时项目的可见性ListView

Question

我正在使用列表视图和适配器来加载列表，每个列表项都有一个TextView，EditText和Image..I设置箭头和Edit文本的可见性。到列表行的位置，一切工作正常，当我第一次加载列表... 但是，当我滚动列表中，项目的可见性不断变化...请帮助我在这个问题上...相关的代码已经被附...

<?xml version="1.0" encoding="utf-8"?> 
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
     android:layout_width="fill_parent" android:layout_height="wrap_content" 
     android:orientation="horizontal" android:background="#FFFFFF"> 
    <TextView android:layout_height="wrap_content" android:layout_width="0dip" 
      android:textSize="20dip" android:layout_weight="1" 
      android:id="@+id/textview_add_lot_list" android:textColor="@android:color/black" 
      android:paddingTop="10dip" android:paddingBottom="10dip" 
      android:paddingLeft="10dip"/> 
    <EditText android:layout_height="fill_parent" android:layout_width="0dip" 
      android:layout_weight="1" android:id="@+id/et_add_lot_list" 
      android:layout_gravity="center_vertical"/> 
    <ImageView android:layout_height="wrap_content" android:layout_width="wrap_content" 
      android:id="@+id/imageview_arrow_add_lot_list" android:layout_gravity="center_vertical" 
      android:visibility="invisible" android:src="@drawable/more_reviews_arrow" 
      android:paddingRight="10dip"/> 
</LinearLayout> 

Java代码的活动......

final ArrayList<String> listItems  = new ArrayList<String>(); 
     listItems.add("Parking name"); 
     listItems.add("Address"); 
     listItems.add("City"); 
     listItems.add("State"); 
     listItems.add("Zip"); 
     listItems.add("Phone"); 
     listItems.add("Web Address"); 
     listItems.add(" "); 
     listItems.add("Parking Image"); 
     listItems.add(" "); 
     listItems.add("Open Hours"); 
     listItems.add(" "); 
     listItems.add("Web Reviews"); 

     final AddParkingLotAdapter adapter = new AddParkingLotAdapter(mAppContext,0,listItems); 
     lv.setAdapter(adapter); 

Java代码...适配器

public class AddParkingLotAdapter extends ArrayAdapter<String> { 
    private ArrayList<String> mStrings; 
    private LayoutInflater mInflater; 
    private AppContext mContext; 

    private static int NON_EMPTY_ROW = 1;                           
    private static int EMPTY_ROW  = 0; 

    public AddParkingLotAdapter(Context context, int resId, List<String> strings) { 
     super(context, resId,strings); 
     mStrings  = (ArrayList<String>) strings; 
     mContext  = (AppContext) context; 
     mInflater  = LayoutInflater.from(context); 
    } 
    @Override 
    public int getViewTypeCount() { 
     return 2;        
    } 
    @Override 
    public int getCount() { 
     return mStrings.size();  
    } 
    @Override 
    public String getItem(int position) { 
     return mStrings.get(position); 
    } 
    @Override 
    public int getItemViewType(int position) { 
     if(position==7||position==9||position==11){ 
      return EMPTY_ROW; 
     }else{ 
      return NON_EMPTY_ROW; 
     } 
    } 
    @Override 
    public View getView(int position, View convertView, ViewGroup parent) { 
     TextView itemTextView = null; 

     //different inflations for different type rows.. 
     if(getItemViewType(position) == EMPTY_ROW){ 
      if (convertView == null) { 
       convertView   = mInflater.inflate(R.layout.review_empty_row, null); 
      } 
     }else if(getItemViewType(position) == NON_EMPTY_ROW){ 
      if (convertView == null) { 
       convertView  = mInflater.inflate(R.layout.add_parkinglist_item, null); 
      } 
      itemTextView  = (TextView) convertView.findViewById(R.id.textview_add_lot_list); 
      itemTextView.setText(mStrings.get(position)); 
      if (position==3||position==8||position==10||position==12){ 
       ImageView itemImageView  = (ImageView)convertView.findViewById(R.id.imageview_arrow_add_lot_list); 
       itemImageView.setVisibility(View.VISIBLE); 
       EditText editText    = (EditText)convertView.findViewById(R.id.et_add_lot_list); 
       editText.setVisibility(View.INVISIBLE); 
      } 
     } 
     return convertView; 
    } 
} 

Answer 1

在此代码：

if (position==3||position==8||position==10||position==12){ 
    ImageView itemImageView  = (ImageView)convertView.findViewById(R.id.imageview_arrow_add_lot_list); 
    itemImageView.setVisibility(View.VISIBLE); 
    EditText editText    = (EditText)convertView.findViewById(R.id.et_add_lot_list); 
    editText.setVisibility(View.INVISIBLE); 
} 

你有没有别的条款。这意味着如果position为0,1,2,4,5或6，则不会明确设置视图的可见性，因此可见性将是视图回收时设置的任何内容。如果convertView非空，则始终需要重置其可见性可能会在之前进行修改的任何项目的可见性。