Android 滚动时倒数计时器工作不正常?
滚动时,Android 滚动时倒数计时器工作不正常?,android,countdowntimer,Android,Countdowntimer,滚动时,倒计时不显示 下面是我的代码 public void onBindViewHolder(final RecyclerView.ViewHolder viewHolder, final int position) { { if (holder.timer != null) { holder.timer.cancel(); } if (!resturantDetails.getRemainingTime().equalsIgnoreCase("")
倒计时
不显示
下面是我的代码
public void onBindViewHolder(final RecyclerView.ViewHolder viewHolder, final int position) {
{
if (holder.timer != null) {
holder.timer.cancel();
}
if (!resturantDetails.getRemainingTime().equalsIgnoreCase("") && holder.timer == null) {
Log.e("AAAAAAAAAAAAAAAAAAAAAAAAA", "" + resturantDetails.getRemainingTime());
holder.timer = new CountDownTimer(Long.parseLong(resturantDetails.getRemainingTime()), 1000) {
@Override
public void onTick(long millisUntilFinished) {
long seconds = (millisUntilFinished / 1000) % 60;
long minutes = ((millisUntilFinished / (1000 * 60)) % 60);
long hours = ((millisUntilFinished / (1000 * 60 * 60)) % 24);
holder.tvHour.setText(String.format("%02d", hours));
holder.tvMinutes.setText(String.format("%02d", minutes));
holder.tvSeconds.setText(String.format("%02d", seconds));
}
@Override
public void onFinish() {
}
}.start();
}
}
下面是我的ViewHolder
课程
public class ResturantDashboardViewHolder extends RecyclerView.ViewHolder {
CountDownTimer timer;
public ResturantDashboardViewHolder(View itemView) {
super(itemView);
}
}
这个问题很简单
RecyclerView
重用持有者,每次调用bind更新持有者中的数据
由于每次绑定任何数据时都会创建一个CountDownTimer
,因此最终会有多个计时器更新相同的ViewHolder
这里最好的方法是在绑定数据(如果启动)并重新安排到所需的持续时间之前取消它
这样,在启动另一个计时器之前,您将取消该
视图持有者的任何当前计时器实例。最终我得到了最佳解决方案
下面是倒计时计时器的适配器代码
public class RestaurantListDetailAdapter extends RecyclerView.Adapter<RestaurantListDetailAdapter.ResturantDashboardViewHolder> implements Filterable {
ArrayList<RestaurantListDetail.DataModel.ResultList> resturantList = new ArrayList<>();
Context mContext;
Utils utils;
String latitude, longitude;
OffersAdapter offersAdapter;
private ArrayList<RestaurantListDetail.DataModel.ResultList> mFilteredList;
public RestaurantListDetailAdapter(ArrayList res, Context mContext, String latitude, String longitude) {
this.resturantList = res;
this.mContext = mContext;
this.latitude = latitude;
this.longitude = longitude;
long maxTime = 0;
for (RestaurantListDetail.DataModel.ResultList item : resturantList) {
if (!item.getRemainingTime().equalsIgnoreCase("")) {
maxTime = Long.parseLong(item.getRemainingTime());
}
}
new CountDownTimer(maxTime, 1000) {
@Override
public void onTick(long l) {
for (int i = 0, dataLength = resturantList.size(); i < dataLength; i++) {
RestaurantListDetail.DataModel.ResultList item = resturantList.get(i);
if (!item.getRemainingTime().equalsIgnoreCase("")) {
item.setRemainingTime(String.valueOf(Long.parseLong(item.getRemainingTime())-1000)) ;
}
}
//remove the expired items
//Iterator<RestaurantListDetail.DataModel.ResultList> dataIterator = resturantList.iterator();
//while (dataIterator.hasNext()) {
//RestaurantListDetail.DataModel.ResultList rd = dataIterator.next();
//if (rd.getRemainingTime().equalsIgnoreCase("")) {
// dataIterator.remove();
// }
// }
notifyDataSetChanged();
}
@Override
public void onFinish() {
// resturantList.clear();
// notifyDataSetChanged();
}
}.start();
}
@Override
public ResturantDashboardViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View v = LayoutInflater.from(parent.getContext()).inflate(R.layout.dashboard_search_item, parent, false);
ResturantDashboardViewHolder viewHolder = new ResturantDashboardViewHolder(v);
return viewHolder;
}
@Override
public void onBindViewHolder(final ResturantDashboardViewHolder holder, final int position) {
final RestaurantListDetail.DataModel.ResultList resturantDetails = resturantList.get(position);
if (!resturantDetails.getRemainingTime().equalsIgnoreCase(""))
{
long seconds = Long.parseLong(resturantDetails.getRemainingTime()) / 1000;
long minutes = seconds / 60;
holder.tvHour .setText(String.format("%02d", TimeUnit.MILLISECONDS.toHours(Long.parseLong(resturantDetails.getRemainingTime()))));
holder.tvMinutes.setText(String.format("%02d",minutes % 60));
holder.tvSeconds.setText(String.format("%02d",seconds % 60));
}
}
@Override
public int getItemCount() {
return resturantList.size();
}
public class ResturantDashboardViewHolder extends RecyclerView.ViewHolder {
LinearLayout llBookingTable, ll_timer_slot, llOfferLayout, llOffers, rl_offer;
TextView tv_resturantname, tvSeatLeft, tvListsTags, tvOffers, textView, tvHour, tvMinutes, tvSeconds, tvOutlets, tv_distance, tv_place, tv_rating, tvClosed, tvCostForTwo, tvOffer, tvSuburb;
public ResturantDashboardViewHolder(View itemView) {
super(itemView);
tvOffers = itemView.findViewById(R.id.tvOffers);
rl_offer = itemView.findViewById(R.id.rl_offer);
tvSeatLeft = itemView.findViewById(R.id.tvSeatLeft);
tvListsTags = itemView.findViewById(R.id.tvListsTags);
textView = itemView.findViewById(R.id.textView);
llOfferLayout = itemView.findViewById(R.id.llOfferLayout);
llBookingTable = itemView.findViewById(R.id.llBookingTable);
ll_timer_slot = itemView.findViewById(R.id.ll_timer_slot);
tvHour = itemView.findViewById(R.id.tvHour);
tvMinutes = itemView.findViewById(R.id.tvMinutes);
tvSeconds = itemView.findViewById(R.id.tvSeconds);
tvOutlets = itemView.findViewById(R.id.tvOutlets);
llOffers = itemView.findViewById(R.id.llOffers);
tvSuburb = itemView.findViewById(R.id.tvSuburb);
tv_distance = itemView.findViewById(R.id.tv_distance);
tv_place = itemView.findViewById(R.id.tv_resturant_place);
tv_resturantname = itemView.findViewById(R.id.tv_resturant_item);
tv_rating = itemView.findViewById(R.id.tv_rating);
tvClosed = itemView.findViewById(R.id.tvClosed);
tvCostForTwo = itemView.findViewById(R.id.tvCostForTwo);
tvOffer = itemView.findViewById(R.id.tvOffer);
}
}
}
公共类RestaurantListDetailAdapter扩展了RecyclerView。适配器实现可过滤{
ArrayList resturantList=新建ArrayList();
语境;
Utils-Utils;
弦纬度、经度;
OffersAdapter OffersAdapter;
私人阵列列表mFilteredList;
public RestaurantListDetailAdapter(ArrayList res、Context McContext、字符串纬度、字符串经度){
this.resturantList=res;
this.mContext=mContext;
这个。纬度=纬度;
这个经度=经度;
长最大时间=0;
对于(RestaurantListDetail.DataModel.ResultList项:RestaurantList){
如果(!item.getRemainingTime().equalsIgnoreCase(“”){
maxTime=Long.parseLong(item.getRemainingTime());
}
}
新的倒计时(最大时间,1000){
@凌驾
公共空白条(长l){
对于(inti=0,dataLength=resturantList.size();i
RecyclerView
循环使用滚动视图。。。这就是为什么onBindViewHolder
仅在视图可见时调用。。。在那之后是r
public class RestaurantListDetailAdapter extends RecyclerView.Adapter<RestaurantListDetailAdapter.ResturantDashboardViewHolder> implements Filterable {
ArrayList<RestaurantListDetail.DataModel.ResultList> resturantList = new ArrayList<>();
Context mContext;
Utils utils;
String latitude, longitude;
OffersAdapter offersAdapter;
private ArrayList<RestaurantListDetail.DataModel.ResultList> mFilteredList;
public RestaurantListDetailAdapter(ArrayList res, Context mContext, String latitude, String longitude) {
this.resturantList = res;
this.mContext = mContext;
this.latitude = latitude;
this.longitude = longitude;
long maxTime = 0;
for (RestaurantListDetail.DataModel.ResultList item : resturantList) {
if (!item.getRemainingTime().equalsIgnoreCase("")) {
maxTime = Long.parseLong(item.getRemainingTime());
}
}
new CountDownTimer(maxTime, 1000) {
@Override
public void onTick(long l) {
for (int i = 0, dataLength = resturantList.size(); i < dataLength; i++) {
RestaurantListDetail.DataModel.ResultList item = resturantList.get(i);
if (!item.getRemainingTime().equalsIgnoreCase("")) {
item.setRemainingTime(String.valueOf(Long.parseLong(item.getRemainingTime())-1000)) ;
}
}
//remove the expired items
//Iterator<RestaurantListDetail.DataModel.ResultList> dataIterator = resturantList.iterator();
//while (dataIterator.hasNext()) {
//RestaurantListDetail.DataModel.ResultList rd = dataIterator.next();
//if (rd.getRemainingTime().equalsIgnoreCase("")) {
// dataIterator.remove();
// }
// }
notifyDataSetChanged();
}
@Override
public void onFinish() {
// resturantList.clear();
// notifyDataSetChanged();
}
}.start();
}
@Override
public ResturantDashboardViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View v = LayoutInflater.from(parent.getContext()).inflate(R.layout.dashboard_search_item, parent, false);
ResturantDashboardViewHolder viewHolder = new ResturantDashboardViewHolder(v);
return viewHolder;
}
@Override
public void onBindViewHolder(final ResturantDashboardViewHolder holder, final int position) {
final RestaurantListDetail.DataModel.ResultList resturantDetails = resturantList.get(position);
if (!resturantDetails.getRemainingTime().equalsIgnoreCase(""))
{
long seconds = Long.parseLong(resturantDetails.getRemainingTime()) / 1000;
long minutes = seconds / 60;
holder.tvHour .setText(String.format("%02d", TimeUnit.MILLISECONDS.toHours(Long.parseLong(resturantDetails.getRemainingTime()))));
holder.tvMinutes.setText(String.format("%02d",minutes % 60));
holder.tvSeconds.setText(String.format("%02d",seconds % 60));
}
}
@Override
public int getItemCount() {
return resturantList.size();
}
public class ResturantDashboardViewHolder extends RecyclerView.ViewHolder {
LinearLayout llBookingTable, ll_timer_slot, llOfferLayout, llOffers, rl_offer;
TextView tv_resturantname, tvSeatLeft, tvListsTags, tvOffers, textView, tvHour, tvMinutes, tvSeconds, tvOutlets, tv_distance, tv_place, tv_rating, tvClosed, tvCostForTwo, tvOffer, tvSuburb;
public ResturantDashboardViewHolder(View itemView) {
super(itemView);
tvOffers = itemView.findViewById(R.id.tvOffers);
rl_offer = itemView.findViewById(R.id.rl_offer);
tvSeatLeft = itemView.findViewById(R.id.tvSeatLeft);
tvListsTags = itemView.findViewById(R.id.tvListsTags);
textView = itemView.findViewById(R.id.textView);
llOfferLayout = itemView.findViewById(R.id.llOfferLayout);
llBookingTable = itemView.findViewById(R.id.llBookingTable);
ll_timer_slot = itemView.findViewById(R.id.ll_timer_slot);
tvHour = itemView.findViewById(R.id.tvHour);
tvMinutes = itemView.findViewById(R.id.tvMinutes);
tvSeconds = itemView.findViewById(R.id.tvSeconds);
tvOutlets = itemView.findViewById(R.id.tvOutlets);
llOffers = itemView.findViewById(R.id.llOffers);
tvSuburb = itemView.findViewById(R.id.tvSuburb);
tv_distance = itemView.findViewById(R.id.tv_distance);
tv_place = itemView.findViewById(R.id.tv_resturant_place);
tv_resturantname = itemView.findViewById(R.id.tv_resturant_item);
tv_rating = itemView.findViewById(R.id.tv_rating);
tvClosed = itemView.findViewById(R.id.tvClosed);
tvCostForTwo = itemView.findViewById(R.id.tvCostForTwo);
tvOffer = itemView.findViewById(R.id.tvOffer);
}
}
}