我創建了一個適配器,並試圖使用String ArrayList中的數據填充ListView。我注意到的是,存儲在我的ArrayList中的每個第4,第8和第12項不存在於我的ListView中。如果我刪除的if/else(查看== NULL)條件下,一切都運行完美,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
無法從ArrayList正確填充的適配器
這裏是我的getView代碼,跳過每4個,第8,第12項
@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;
}
這裏是作品和顯示所有項目在我mArraySelect(字符串ArrayList的),但使我對我的充氣棉絨警告
@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());
}
}
任何人都有一個想法,我在我的第一次執行到我缺少的代碼導致跳過視圖?我的國防部條件只是爲了交替兩個不同的意見,並且工作正常。只是我的String ArrayList中的第4,8和12項沒有顯示。該陣列只有12個項目。
預先感謝您!
嘿!我不太明白,但這確實有效。謝謝! – portfoliobuilder 2015-03-08 22:22:10
一旦你認爲我們爲什麼使用外部if塊和視圖持有者對象,你會得到答案:) – 2015-03-08 22:25:02