7
In meiner App muss ich den Countdown-Timer für jedes Element in der Listenansicht anzeigen. Ich konnte dies unter Verwendung CountDownTimer tun. Problem ist jedoch, wenn die Liste nach oben oder unten gescrollt wird, der Timer beginnt zu flackern. Viel gesucht, aber keine Lösung gefunden.ListView mit Coundown-Timer. Timer flackert beim Scrollen der Listenansicht
My Adapter Klasse
public class BuyListingListAdapter extends BaseAdapter {
private Context mContext;
private ArrayList<VehicleAttributes> mVehicleList = new ArrayList<VehicleAttributes>();
private Date currentDate;
//Saving position in map to check if timer has been //started for this row
private HashMap<Integer, Boolean> timerMap = new HashMap<Integer, Boolean>();
public BuyListingListAdapter(Context context,
ArrayList<VehicleAttributes> vehicleList, boolean showGridView) {
this.mContext = context;
this.mVehicleList = vehicleList;
this.showGridView = showGridView;
currentDate = new Date(System.currentTimeMillis());
int listSize = mVehicleList.size();
for (int i = 0; i < listSize; i++)
timerMap.put(i, false);
}
@Override
public int getCount() {
return mVehicleList.size();
}
@Override
public Object getItem(int position) {
return mVehicleList.get(position);
}
@Override
public long getItemId(int position) {
return 0;
}
@Override
public View getView(final int position, View convertView, ViewGroup parent) {
final ViewHolder holder;
if (convertView == null) {
LayoutInflater inflater = LayoutInflater.from(parent.getContext());
convertView = inflater.inflate(R.layout.row_buy_listing_grid,
parent, false);
holder = new ViewHolder();
holder.timer_layout = (LinearLayout) convertView
.findViewById(R.id.timer_layout);
holder.txt_remaining_days = (RobotoCondensedBoldTextView) convertView
.findViewById(R.id.txt_remaining_days);
holder.txt_remaining_hours = (RobotoCondensedBoldTextView) convertView
.findViewById(R.id.txt_remaining_hours);
holder.txt_remaining_mins = (RobotoCondensedBoldTextView) convertView
.findViewById(R.id.txt_remaining_mins);
holder.txt_remaining_secs = (RobotoCondensedBoldTextView) convertView
.findViewById(R.id.txt_remaining_secs);
holder.listing_status = (ImageView) convertView
.findViewById(R.id.listing_status);
convertView.setTag(holder);
} else
holder = (ViewHolder) convertView.getTag();
final VehicleAttributes vehicleAttributes = mVehicleList.get(position);
AuctionModel mAuctionModel = vehicleAttributes.getAuctionDetailModel();
if (mAuctionModel != null) {
holder.img_auction.setVisibility(View.VISIBLE);
Date auctionStartDate = Util
.getDateFromString(mAuctionModel.getStarted_at(),
"yyyy-MM-dd hh:mm:ss", "GMT");
Date auctionEndDate = Util.getDateFromString(
mAuctionModel.getEnded_at(), "yyyy-MM-dd hh:mm:ss", "GMT");
long diff = currentDate.getTime() - auctionEndDate.getTime();
if (diff < 0)
diff = -diff;
else
diff = 0;
if (timerMap.get(position) == null || !timerMap.get(position)) {
timerMap.put(position, true);
MyCountDown countDown = new MyCountDown(position, diff, 1000,
holder.txt_remaining_days, holder.txt_remaining_hours,
holder.txt_remaining_mins, holder.txt_remaining_secs);
countDown.start();
}
}
return convertView;
}
private class MyCountDown extends CountDownTimer {
RobotoCondensedBoldTextView txt_remaining_days;
RobotoCondensedBoldTextView txt_remaining_hours;
RobotoCondensedBoldTextView txt_remaining_mins;
RobotoCondensedBoldTextView txt_remaining_secs;
int position;
public MyCountDown(int position, long millisInFuture, long countDownInterval,
RobotoCondensedBoldTextView txt_remaining_days,
RobotoCondensedBoldTextView txt_remaining_hours,
RobotoCondensedBoldTextView txt_remaining_mins,
RobotoCondensedBoldTextView txt_remaining_secs) {
super(millisInFuture, countDownInterval);
this.position = position;
this.txt_remaining_days = txt_remaining_days;
this.txt_remaining_hours = txt_remaining_hours;
this.txt_remaining_mins = txt_remaining_mins;
this.txt_remaining_secs = txt_remaining_secs;
}
@Override
public void onFinish() {
}
@Override
public void onTick(long millisUntilFinished) {
updateTimerLabel(position, millisUntilFinished, txt_remaining_days,
txt_remaining_hours, txt_remaining_mins, txt_remaining_secs);
}
}
private void updateTimerLabel(int position, long millis,
RobotoCondensedBoldTextView txt_remaining_days,
RobotoCondensedBoldTextView txt_remaining_hours,
RobotoCondensedBoldTextView txt_remaining_mins,
RobotoCondensedBoldTextView txt_remaining_secs) {
String days = String.format("%02d",
TimeUnit.MILLISECONDS.toDays(millis));
String hours = String.format(
"%02d",
TimeUnit.MILLISECONDS.toHours(millis)
- TimeUnit.DAYS.toHours(TimeUnit.MILLISECONDS
.toDays(millis)));
String mins = String.format(
"%02d",
TimeUnit.MILLISECONDS.toMinutes(millis)
- TimeUnit.HOURS.toMinutes(TimeUnit.MILLISECONDS
.toHours(millis)));
String secs = String.format(
"%02d",
TimeUnit.MILLISECONDS.toSeconds(millis)
- TimeUnit.MINUTES.toSeconds(TimeUnit.MILLISECONDS
.toMinutes(millis)));
txt_remaining_days.setText(days);
txt_remaining_hours.setText(hours);
txt_remaining_mins.setText(mins);
txt_remaining_secs.setText(secs);
}
static class ViewHolder {
NetworkImageView mVehicleImage;
RobotoCondensedBoldTextView txt_remaining_days, txt_remaining_hours,
txt_remaining_mins, txt_remaining_secs;
LinearLayout timer_layout;
}
}
Ein Problem vermissen Sie die sonst Teil dieser if (mAuctionModel! = Null) { – Amsheer
@Amsheer Ich hatte meinen Code zugeschnitten und zeigte nur das, was relevant ist. Der Timer wird auch nur angezeigt, wenn dieses Modell vorhanden ist. – Nitish
Haben Sie das auf mehreren Geräten/Android-Versionen getestet? – bernlim