Android 奇怪的行为ArrayList.remove（）；
我遇到了一个问题，我似乎无法独自解决它 我正在尝试使用.remove（position）从列表视图中删除项目；和。通知数据设置（位置）；但它正在消除错误的立场 这是我的密码Android 奇怪的行为ArrayList.remove（）；,android,listview,indexing,adapter,Android,Listview,Indexing,Adapter,我遇到了一个问题，我似乎无法独自解决它 我正在尝试使用.remove（position）从列表视图中删除项目；和。通知数据设置（位置）；但它正在消除错误的立场 这是我的密码 @Override public View getView(int position, View convertView, ViewGroup parent) { try { ViewHolder holder; final String[]
@Override
public View getView(int position, View convertView, ViewGroup parent) {
try {
ViewHolder holder;
final String[] parts;
final String uuidbeacon;
uuidbeacon = arrayL.get(position).getProximityUuid().toString();
minorbeacon = arrayL.get(position).getMinor();
rangebeacon = arrayL.get(position).getAccuracy();
parts = fetchTums(uuidbeacon).split("::");
if (convertView != null) {
holder = (ViewHolder) convertView.getTag();
}
else{
if(parts[0].equals("1")) {
holder = new ViewHolder(convertView = inflater.inflate(R.layout.tupple_monitoring, null));
holder.beacon_image.setImageDrawable(getTumImage("http://127.0.0.1/uploads/face/" + parts[4]));
holder.beacon_uuid.setText(parts[1]);
holder.beacon_txpower.setText(String.valueOf(position));
}
if(parts[0].equals("0"))
{
holder = new ViewHolder(convertView = inflater.inflate(R.layout.tupple_monitoring, null));
holder.beacon_txpower.setText(String.valueOf(position));
toRemoveString = toRemoveString + String.valueOf(position) + "::";
}
if(parts[2].equals("1"))
{
holder = new ViewHolder(convertView = inflater.inflate(R.layout.tupple_monitoring, null));
holder.beacon_image.setImageDrawable(getTumImage("http://127.0.0.1/uploads/face/" + parts[4]));
holder.beacon_uuid.setText(parts[1]);
holder.beacon_txpower.setText("Hier misschien wat text?");
holder.beacon_row.setBackgroundColor(Color.parseColor("#B6B6B6"));
holder.image_lock.setVisibility(View.VISIBLE);
}
}
if (arrayL.get(position).getProximityUuid() != null)
list.setOnItemClickListener(new AdapterView.OnItemClickListener()
{
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id )
{
//list.setItemChecked(position, true);
//view.setBackgroundColor(Color.BLUE);
final String[] parts;
parts = fetchTums(arrayL.get(position).getProximityUuid().toString()).split("::");
if(parts[2].equals("1")){
pin(parts[3], parts[1]);
}
else{
if(parts[3] != null){
openPage(parts[3], "", parts[1]);
}
}
}
});
} catch (Exception e) {
e.printStackTrace();
}
return convertView;
}
但是现在发生的事情很奇怪，当我单击按钮时，它将删除位置为1的项目，如果我再次单击它，它将删除位置为0的项目。如果我更改了arrayL.remove（0）；至arrayL。移除（1）；它将删除位置为1的项目，如果我再次单击，它将按预期崩溃。但我真正想要的是删除位置0并保留位置1。您的代码正在工作，但在转换“convertView”后，您不会更新其值
ViewHolder holder;
final String[] parts;
final String uuidbeacon;
uuidbeacon = arrayL.get(position).getProximityUuid().toString();
minorbeacon = arrayL.get(position).getMinor();
rangebeacon = arrayL.get(position).getAccuracy();
parts = fetchTums(uuidbeacon).split("::");
if (convertView != null) {
holder = (ViewHolder) convertView.getTag();
}
else{
holder = new ViewHolder(convertView = inflater.inflate(R.layout.tupple_monitoring, null));
}
if(parts[0].equals("1")) {
holder.beacon_image.setImageDrawable(getTumImage("http://127.0.0.1/uploads/face/" + parts[4]));
holder.beacon_uuid.setText(parts[1]);
holder.beacon_txpower.setText(String.valueOf(position));
}
if(parts[0].equals("0"))
{
holder.beacon_txpower.setText(String.valueOf(position));
toRemoveString = toRemoveString + String.valueOf(position) + "::";
}
if(parts[2].equals("1"))
{
holder.beacon_image.setImageDrawable(getTumImage("http://127.0.0.1/uploads/face/" + parts[4]));
holder.beacon_uuid.setText(parts[1]);
holder.beacon_txpower.setText("Hier misschien wat text?");
holder.beacon_row.setBackgroundColor(Color.parseColor("#B6B6B6"));
holder.image_lock.setVisibility(View.VISIBLE);
}
您是否尝试过在arrayL.remove（0）上放置断点进行调试，并查看arrayL在删除之前有哪些元素以及它们的顺序？@dora我不知道您的确切意思，但我拍摄了调试的屏幕截图，您可以在这里看到（无法在文章中显示图片需要10 rep:/）
holder=（ViewHolder）convertView.getTag（）你认为这有什么作用？（提示：您从不调用setTag
）这是什么意思？我看到我的列表视图项从屏幕上消失了，但它是错误的。在重用视图时，您的“convertView”是第二个，并且您没有更新视图中的值。更新你的代码作为我的答案。
ViewHolder holder;
final String[] parts;
final String uuidbeacon;
uuidbeacon = arrayL.get(position).getProximityUuid().toString();
minorbeacon = arrayL.get(position).getMinor();
rangebeacon = arrayL.get(position).getAccuracy();
parts = fetchTums(uuidbeacon).split("::");
if (convertView != null) {
holder = (ViewHolder) convertView.getTag();
}
else{
holder = new ViewHolder(convertView = inflater.inflate(R.layout.tupple_monitoring, null));
}
if(parts[0].equals("1")) {
holder.beacon_image.setImageDrawable(getTumImage("http://127.0.0.1/uploads/face/" + parts[4]));
holder.beacon_uuid.setText(parts[1]);
holder.beacon_txpower.setText(String.valueOf(position));
}
if(parts[0].equals("0"))
{
holder.beacon_txpower.setText(String.valueOf(position));
toRemoveString = toRemoveString + String.valueOf(position) + "::";
}
if(parts[2].equals("1"))
{
holder.beacon_image.setImageDrawable(getTumImage("http://127.0.0.1/uploads/face/" + parts[4]));
holder.beacon_uuid.setText(parts[1]);
holder.beacon_txpower.setText("Hier misschien wat text?");
holder.beacon_row.setBackgroundColor(Color.parseColor("#B6B6B6"));
holder.image_lock.setVisibility(View.VISIBLE);
}