使用自定義列表視圖時的奇怪行爲

Question

我的適配器及其SetAdd類很奇怪。

我的gridview包含帶有imageview的項目和上面的通知文本。

使用自定義ArrayList的gridview填充。

這裏是代碼做到這一點：

Items = new ArrayList<SetAdd>(); 
SetAdd item0 = new SetAdd(); 
item.setNewNews(5); 
item0.setImageID(images[1]); 
Items.add(item0); 

SetAdd item1 = new SetAdd(); 
item.setNewNews(3); 
item1.setImageID(images[2]); 
Items.add(item1); 

SetAdd item2 = new SetAdd(); 
item.setNewNews(4); 
item2.setImageID(images[3]); 
Items.add(item2); 

NewsGV = (GridView) findViewById(R.id.gridView_NEWS); 
     NewsAdapter adapter = new NewsAdapter(this, Items); 
     NewsGV.setAdapter(adapter); 

這是我SetAdd類：

public class SetAdd { 

public int getImageId() { 
    return imageId; 
} 

public void setImageID(int imageId) { 
    this.imageId = imageId; 
} 

public int getNewNews() { 
    return newNews; 
} 

public void setNewNews(int newNews) { 
    this.newNews = newNews; 
    Log.d("setNewNews in SetAdd: ", String.valueOf(newNews)); 
} 

private int imageId; 
private int newNews; 
} 

這是我的適配器類：

公共類NewsAdapter擴展ArrayAdapter {

private static List<SetAdd> News; 
private Activity context; 
private LayoutInflater l_inflater; 

public NewsAdapter(Activity context, List<SetAdd> News) { 
    super(context, R.layout.news_grid_view_template, News); 
    this.context = context; 
    this.News = News; 

} 

private class ViewHolder { 
    ImageView img; 
    ImageView imgCircle; 
    TextView txtNewNews; 
} 

public SetAdd getItem(int position) { 
    return News.get(position); 
} 

public View getView(int position, View convertView, ViewGroup parent) { 
    ViewHolder holder; 
    LayoutInflater inflater = context.getLayoutInflater(); 

    if (convertView == null) { 
     convertView = inflater.inflate(R.layout.news_grid_view_template, 
       null); 
     holder = new ViewHolder(); 
     holder.txtNewNews = (TextView) convertView 
       .findViewById(R.id.txtNewNews); 
     holder.img = (ImageView) convertView 
       .findViewById(R.id.img_ImagePlaceHolder); 
     holder.imgCircle = (ImageView) convertView 
       .findViewById(R.id.imgCircle); 
     convertView.setTag(holder); 
    } else { 
     holder = (ViewHolder) convertView.getTag(); 
    } 

    SetAdd items = (SetAdd) getItem(position); 

    Log.d("Got New News number is: ", String.valueOf(items.getNewNews())); 
    //Log.d("Got new Image Id is: ", String.valueOf(items.getImageId())); 
    if (items.getNewNews() == 0) { 
     holder.txtNewNews.setVisibility(View.GONE); 
     holder.imgCircle.setVisibility(View.GONE); 
    } else { 
     holder.txtNewNews.setText(String.valueOf(items.getNewNews())); 
    } 
    holder.img.setImageResource(items.getImageId()); 

    return convertView; 
} 
} 

現在的問題： 我的列表gridview填充適當的圖像，但0新的新聞。 我以同樣的方式設置了imageID和NewNews，但item.setNewNews（）給出的結果不管我輸入什麼值。

Answer 1

代碼有錯誤（可能是打字錯誤）。你永遠不會設置的值item1和item2

Items = new ArrayList<SetAdd>(); 
SetAdd item0 = new SetAdd(); 
item0.setNewNews(5); 
item0.setImageID(images[1]); 
Items.add(item0); 

SetAdd item1 = new SetAdd(); 
item1.setNewNews(3); // changed this line 
item1.setImageID(images[2]); 
Items.add(item1); 

SetAdd item2 = new SetAdd(); 
item2.setNewNews(4); // changed this line 
item2.setImageID(images[3]); 
Items.add(item2);