本文介绍了Android的ListView中加入过多的物品的处理方法，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
我使用的是循环目前加入TextViews一个ListView元素内的LinearLayout里面，因为TextViews量我要补充在那里是可变的。我加入的项目到列表视图就像你通常做。
问题是，当我滚动项目开始变得越来越多，当我向后滚动起来，我结束了几百个项目。我想这是因为在ListView被重新加载，并通过循环再次循环等每个TextView中多次加入。我可以停止？
我的code：
公共类ListViewAdapter扩展ArrayAdapter＆LT; RowItem＆GT; { 私人最终上下文的背景下; 公共ListViewAdapter（上下文的背景下，列表与LT; RowItem＆GT;项目）{
超（背景下，R.layout.list，项目）;
this.context =背景;
} 私有类ViewHolder {
TextView的称号;
LinearLayout中的LinearLayout;
} 公共查看getView（INT位置，查看convertView，父母的ViewGroup）{
ViewHolder持有人;
RowItem rowItem =的getItem（位置）; LayoutInflater mInflater =（LayoutInflater）context.getSystemService（Activity.LAYOUT_INFLATER_SERVICE）; 如果（convertView == NULL）{
convertView = mInflater.inflate（R.layout.list_list，NULL）;
持有人=新ViewHolder（）;
holder.title =（TextView中）convertView.findViewById（R.id.list_line）;
holder.linearLayout =（的LinearLayout）convertView.findViewById（R.id.list_linear）;
convertView.setTag（保持器）;
}其他{
支架=（ViewHolder）convertView.getTag（）;
} holder.title.setText（rowItem.getTitle（））; 字符串数据= rowItem.getData（）;
串[] split0 = data.split（=）; Log.e（DATA的数据）;
Log.e（LINE，rowItem.getTitle（））; 对于（INT J = 0; J＆LT; split0.length; J ++）{
的String [] =分割1 split0 [J] .split（：）; 的LinearLayout parentLayout =新的LinearLayout（MainActivity.context）;
parentLayout.setLayoutParams（新LinearLayout.LayoutParams（LinearLayout.LayoutParams.MATCH_PARENT，LinearLayout.LayoutParams.WRAP_CONTENT））;
parentLayout.setOrientation（LinearLayout.HORIZONTAL）; 对于（INT K = 0; K＆LT; split1.length; k ++）{
TextView中的TextView =新的TextView（MainActivity.context）;
textView.setText（分割1 [K]）;
textView.setLayoutParams（新LinearLayout.LayoutParams（LinearLayout.LayoutParams.MATCH_PARENT，LinearLayout.LayoutParams.WRAP_CONTENT，1.0F））;
textView.setGravity（Gravity.CENTER_HORIZONTAL | Gravity.CENTER_VERTICAL）;
textView.setTextSize（18）; parentLayout.addView（TextView的）;
}
holder.linearLayout.addView（parentLayout）;
} 返回convertView;
}
}
我的数据sceme看起来像这样的一个条目：
文本1：文本2 =文字3：文本4
怎么会看就行了：
文本1文本2
文字3文字4
解决方案
的问题是，一个ArrayAdapter将调用 getView（）每一行变为可见的时间。如果该行已成立了previously，它会通过在pviously设立观的 convertView 参数$ P $。
请参阅了解详情。从the对于文档 convertView ：
Edit: Since the original code proposed was causing problems, it looks like you might not be able to use the standard view holder design pattern after all. You have a unique set-up, where you are creating a dynamic amount of items in each row.
You might be able to do something that is slightly optimized, where you don't have to call inflate() on each getView() call, but still re-create the ViewHolder each time getView() is called, in order to populate the correct data when scrolling:
public View getView(int position, View convertView, ViewGroup parent) {
ViewHolder holder;
RowItem rowItem = getItem(position);
LayoutInflater mInflater = (LayoutInflater) context.getSystemService(Activity.LAYOUT_INFLATER_SERVICE);
if (convertView == null) {
convertView = mInflater.inflate(R.layout.list_list, null);
}
holder = new ViewHolder();
holder.title = (TextView) convertView.findViewById(R.id.list_line);
holder.linearLayout = (LinearLayout) convertView.findViewById(R.id.list_linear);
convertView.setTag(holder);
holder.title.setText(rowItem.getTitle());
String data = rowItem.getData();
String[] split0 = data.split("=");
Log.e("DATA", data);
Log.e("LINE", rowItem.getTitle());
for (int j = 0; j < split0.length; j++) {
String[] split1 = split0[j].split(":");
LinearLayout parentLayout = new LinearLayout(MainActivity.context);
parentLayout.setLayoutParams(new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.WRAP_CONTENT));
parentLayout.setOrientation(LinearLayout.HORIZONTAL);
for (int k = 0; k < split1.length; k++) {
TextView textView = new TextView(MainActivity.context);
textView.setText(split1[k]);
textView.setLayoutParams(new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.WRAP_CONTENT, 1.0f));
textView.setGravity(Gravity.CENTER_HORIZONTAL | Gravity.CENTER_VERTICAL);
textView.setTextSize(18);
parentLayout.addView(textView);
}
holder.linearLayout.addView(parentLayout);
}
return convertView;
}
If that doesn't work, you could just go back to the basics, and just completely re-create the view on each call to getView():
public View getView(int position, View convertView, ViewGroup parent) {
ViewHolder holder;
RowItem rowItem = getItem(position);
LayoutInflater mInflater = (LayoutInflater) context.getSystemService(Activity.LAYOUT_INFLATER_SERVICE);
//if (convertView == null) {
convertView = mInflater.inflate(R.layout.list_list, null);
holder = new ViewHolder();
holder.title = (TextView) convertView.findViewById(R.id.list_line);
holder.linearLayout = (LinearLayout) convertView.findViewById(R.id.list_linear);
convertView.setTag(holder);
holder.title.setText(rowItem.getTitle());
String data = rowItem.getData();
String[] split0 = data.split("=");
Log.e("DATA", data);
Log.e("LINE", rowItem.getTitle());
for (int j = 0; j < split0.length; j++) {
String[] split1 = split0[j].split(":");
LinearLayout parentLayout = new LinearLayout(MainActivity.context);
parentLayout.setLayoutParams(new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.WRAP_CONTENT));
parentLayout.setOrientation(LinearLayout.HORIZONTAL);
for (int k = 0; k < split1.length; k++) {
TextView textView = new TextView(MainActivity.context);
textView.setText(split1[k]);
textView.setLayoutParams(new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.WRAP_CONTENT, 1.0f));
textView.setGravity(Gravity.CENTER_HORIZONTAL | Gravity.CENTER_VERTICAL);
textView.setTextSize(18);
parentLayout.addView(textView);
}
holder.linearLayout.addView(parentLayout);
}
//}
return convertView;
}
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