2015-03-08 63 views
0

我创建了一个适配器,并试图使用String ArrayList中的数据填充ListView。我注意到的是,存储在我的ArrayList中的每个第4,第8和第12项不存在于我的ListView中。如果我删除的if/else(查看== NULL)条件下,一切都运行完美,除了我收到皮棉警告>>Unconditional layout inflation from view adapter: Should use View Holder pattern (use recycled view passed into this method as the second parameter) for smoother scrolling无法从ArrayList正确填充的适配器

这里是我的getView代码,跳过每4个,第8,第12项

@Override 
    public View getView(int position, View convertView, ViewGroup parent) { 
     // TODO Auto-generated method stub 

     View view = convertView; 
     ViewHolder holder; 
     if (view == null) { 
      LayoutInflater inflater = (LayoutInflater) mContext 
        .getSystemService(Context.LAYOUT_INFLATER_SERVICE); 
      view = inflater.inflate(R.layout.item_select, null);   
      holder = new ViewHolder(); 

      holder.rlLeft = (RelativeLayout) view.findViewById(R.id.rl_left); 
      holder.rlRight = (RelativeLayout) view.findViewById(R.id.rl_right); 
      holder.tvTitle = (TextView) view.findViewById(R.id.tv_title); 
      holder.tvLeftBubble = (TextView) view.findViewById(R.id.tv_left_bubble); 
      holder.tvRightBubble = (TextView) view.findViewById(R.id.tv_right_bubble); 
      holder.tvTitle.setText(mArrySelect.get(position).getTitle()); 

      // set visibility gone on views 
      if (position % 2 == 0) { 
       holder.rlLeft.setVisibility(View.GONE); 
       holder.tvRightBubble.setText(mArrySelect.get(position).getMessage()); 
      } else { 
       holder.rlRight.setVisibility(View.GONE);    
       holder.tvLeftBubble.setText(mArrySelect.get(position).getMessage()); 
      } 

      view.setTag(holder); 
     } else { 
      holder = (ViewHolder) view.getTag(); 
     } 
     return view; 
    } 

这里是作品和显示所有项目在我mArraySelect(字符串ArrayList的),但使我对我的充气棉绒警告

 @Override 
     public View getView(int position, View convertView, ViewGroup parent) { 
      // TODO Auto-generated method stub 

      View view = convertView; 
      LayoutInflater inflater = (LayoutInflater) mContext 
        .getSystemService(Context.LAYOUT_INFLATER_SERVICE); 
      view = inflater.inflate(R.layout.item_select, null);   
      holder = new ViewHolder(); 

      holder.rlLeft = (RelativeLayout) view.findViewById(R.id.rl_left); 
      holder.rlRight = (RelativeLayout) view.findViewById(R.id.rl_right); 
      holder.tvTitle = (TextView) view.findViewById(R.id.tv_title); 
      holder.tvLeftBubble = (TextView) view.findViewById(R.id.tv_left_bubble); 
      holder.tvRightBubble = (TextView) view.findViewById(R.id.tv_right_bubble); 
      holder.tvTitle.setText(mArrySelect.get(position).getTitle()); 

      // set visibility gone on views 
      if (position % 2 == 0) { 
       holder.rlLeft.setVisibility(View.GONE); 
       holder.tvRightBubble.setText(mArrySelect.get(position).getMessage()); 
      } else { 
       holder.rlRight.setVisibility(View.GONE);    
       holder.tvLeftBubble.setText(mArrySelect.get(position).getMessage()); 
      } 
     } 

任何人都有一个想法,我在我的第一次执行到我缺少的代码导致跳过视图?我的国防部条件只是为了交替两个不同的意见,并且工作正常。只是我的String ArrayList中的第4,8和12项没有显示。该阵列只有12个项目。

预先感谢您!

回答

1

移动下列代码出方的最外层,如果块可以解决此发出─

// set visibility gone on views 
      if (position % 2 == 0) { 
       holder.rlLeft.setVisibility(View.GONE); 
       holder.tvRightBubble.setText(mArrySelect.get(position).getMessage()); 
      } else { 
       holder.rlRight.setVisibility(View.GONE);    
       holder.tvLeftBubble.setText(mArrySelect.get(position).getMessage()); 
      } 

把它只是return语句以上。

+0

嘿!我不太明白,但这确实有效。谢谢! – portfoliobuilder 2015-03-08 22:22:10

+0

一旦你认为我们为什么使用外部if块和视图持有者对象,你会得到答案:) – 2015-03-08 22:25:02