getView（）的位置在BaseAdapter -Android重复 [英] getView() position is repeating in BaseAdapter -Android
本文介绍了getView（）的位置在BaseAdapter -Android重复的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
在我的Android应用我显示卡的列表。我使用BaseAdapter。所有卡都看到我的ListView的，但我得到的一个问题。
getView（）被称为反复位置由于第一卡不显示正确的图像。它是使用从第2至最后一张牌的图像。我花了一天时间来修复它。我去过很多计算器的答案，但没有运气。请帮助我。
@覆盖
公共查看getView（最终诠释的立场，观点convertView，父母的ViewGroup）{
ViewHolder支架=无效;
LayoutInflater mInflater =（LayoutInflater）context.getSystemService（Activity.LAYOUT_INFLATER_SERVICE）;
尝试{
如果（convertView == NULL）{
convertView = mInflater.inflate（R.layout.wallet_list_item，NULL）;
持有人=新ViewHolder（）; holder.cardIcon =（ImageView的）convertView.findViewById（R.id.img_wallet_card）;
holder.cardName =（TextView中）convertView.findViewById（R.id.tv_wallet_card_name）;
holder.cardPrice =（TextView中）convertView.findViewById（R.id.tv_wallet_card_price）;
holder.cancel =（ImageView的）convertView.findViewById（R.id.cancel）;
convertView.setTag（保持器）;
}其他{
支架=（ViewHolder）convertView.getTag（）;
} WalletRowItem rowItem =（WalletRowItem）的getItem（位置）; 如果（rowItem.getCard_name（）。equalsIgnoreCase（吻））{ holder.cardIcon.setImageResource（R.drawable.logo）;
holder.cardName.setText（吻）;
holder.cardPrice.setText（）;
INT bg_red =的Integer.parseInt（rowItem.getBackground_red（））;
INT bg_green =的Integer.parseInt（rowItem.getBackground_green（））;
INT bg_blue =的Integer.parseInt（rowItem.getBackground_blue（））;
holder.colorbg = Color.rgb（bg_red，bg_green，bg_blue）;
holder.cancel.setVisibility（View.VISIBLE）; holder.cancel.setOnClickListener（新View.OnClickListener（）{
@覆盖
公共无效的onClick（视图v）{
mViewClickListener.onImageClicked（位置）;
}
}）;
}其他{
holder.cancel.setVisibility（View.INVISIBLE）;
Picasso.with(context).load(rowItem.getCardImage_url()).error(R.drawable.success_icon).placeholder(R.drawable.plus_icon_actionbar).into(holder.cardIcon); holder.cardName.setText（rowItem.getCard_name（））; 如果（！TextUtils.isEmpty（rowItem.getCard_price（）））{
holder.cardPrice.setText（$+ rowItem.getCard_price（））;
}其他{
holder.cardPrice.setText（$+0.0）;
} INT bg_red =的Integer.parseInt（rowItem.getBackground_red（））;
INT bg_green =的Integer.parseInt（rowItem.getBackground_green（））;
INT bg_blue =的Integer.parseInt（rowItem.getBackground_blue（））;
holder.colorbg = Color.rgb（bg_red，bg_green，bg_blue）;
} //将形状绘制，使LIST_ITEM角落四舍五入。
ShapeDrawable footerBackground =新ShapeDrawable（）;
浮动[] =半径新的浮动[8];
半径[0] = 10;
半径[1] = 10;
半径[2] = 10;
半径[3] = 10;
footerBackground.setShape（新RoundRectShape（半径，NULL，NULL））;
。footerBackground.getPaint（）的setColor（holder.colorbg）;
convertView.setBackgroundDrawable（footerBackground）; INT红色=的Integer.parseInt（rowItem.getTitle_red（））;
INT绿色=的Integer.parseInt（rowItem.getTitle_green（））;
INT蓝色=的Integer.parseInt（rowItem.getTitle_blue（））;
holder.cardPrice.setTextColor（Color.rgb（红，绿，蓝））;
holder.cardName.setTextColor（Color.rgb（红，绿，蓝））; }赶上（例外五）{
e.getLocalizedMessage（）;
}
返回convertView;
}
解决方案
我不知道它会解决这个问题，但我会建议始终使用毕加索 ，其中的'吻'卡的情况下，因为它有它自己的方式来处理图像下载的取消鉴于回收的情况下（见的 https://square.github.io/picasso/ 了解更多详细信息）
这可以通过更换完成
holder.cardIcon.setImageResource（R.drawable.logo）;
按
Picasso.load（R.drawable.logo）.into（holder.cardIcon）;
In my Android Application I am showing a list of Cards. I am using BaseAdapter. All cards are visible to me on the ListView but I am getting an issue.
getView() is called with repeated positions due to the first card not showing the correct image. It is using the image from the 2nd to last card. I spent a day to fix it. I visited many stackoverflow answers, but no luck. Help me please.
@Override
public View getView(final int position, View convertView, ViewGroup parent) {
ViewHolder holder = null;
LayoutInflater mInflater = (LayoutInflater)context.getSystemService(Activity.LAYOUT_INFLATER_SERVICE);
try {
if (convertView == null) {
convertView = mInflater.inflate(R.layout.wallet_list_item, null);
holder = new ViewHolder();
holder.cardIcon = (ImageView) convertView.findViewById(R.id.img_wallet_card);
holder.cardName = (TextView) convertView.findViewById(R.id.tv_wallet_card_name);
holder.cardPrice = (TextView) convertView.findViewById(R.id.tv_wallet_card_price);
holder.cancel =(ImageView)convertView.findViewById(R.id.cancel);
convertView.setTag(holder);
} else {
holder = (ViewHolder) convertView.getTag();
}
WalletRowItem rowItem = (WalletRowItem) getItem(position);
if(rowItem.getCard_name().equalsIgnoreCase("Kiss")){
holder.cardIcon.setImageResource(R.drawable.logo);
holder.cardName.setText("Kiss");
holder.cardPrice.setText("");
int bg_red=Integer.parseInt(rowItem.getBackground_red());
int bg_green=Integer.parseInt(rowItem.getBackground_green());
int bg_blue=Integer.parseInt(rowItem.getBackground_blue());
holder.colorbg=Color.rgb(bg_red, bg_green, bg_blue);
holder.cancel.setVisibility(View.VISIBLE);
holder.cancel.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
mViewClickListener.onImageClicked(position);
}
});
}else{
holder.cancel.setVisibility(View.INVISIBLE);
Picasso.with(context).load(rowItem.getCardImage_url()).error(R.drawable.success_icon).placeholder(R.drawable.plus_icon_actionbar).into(holder.cardIcon);
holder.cardName.setText(rowItem.getCard_name());
if(!TextUtils.isEmpty(rowItem.getCard_price())) {
holder.cardPrice.setText("$" + rowItem.getCard_price());
}else{
holder.cardPrice.setText("$" + "0.0");
}
int bg_red=Integer.parseInt(rowItem.getBackground_red());
int bg_green=Integer.parseInt(rowItem.getBackground_green());
int bg_blue=Integer.parseInt(rowItem.getBackground_blue());
holder.colorbg=Color.rgb(bg_red, bg_green, bg_blue);
}
//Make a shape drawable to make list_item corner rounded .
ShapeDrawable footerBackground = new ShapeDrawable();
float[] radii = new float[8];
radii[0] = 10 ;
radii[1] = 10 ;
radii[2] = 10 ;
radii[3] = 10 ;
footerBackground.setShape(new RoundRectShape(radii, null, null));
footerBackground.getPaint().setColor(holder.colorbg);
convertView.setBackgroundDrawable(footerBackground);
int red=Integer.parseInt(rowItem.getTitle_red());
int green=Integer.parseInt(rowItem.getTitle_green());
int blue=Integer.parseInt(rowItem.getTitle_blue());
holder.cardPrice.setTextColor(Color.rgb(red, green, blue));
holder.cardName.setTextColor(Color.rgb(red, green, blue));
} catch (Exception e) {
e.getLocalizedMessage();
}
return convertView;
}
解决方案
I'm not sure it will fix the issue, but I'd suggest to always use Picasso, including the case of the 'Kiss' cards, because it has its own way to handle cancellation of image download in case of view recycling (see https://square.github.io/picasso/ for more details)
That can be done by replacing
holder.cardIcon.setImageResource(R.drawable.logo);
by
Picasso.load(R.drawable.logo).into(holder.cardIcon);
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