在我的应用程序中，我应该使用 CountDownTimer 进入 recyclerView 为此我编写了以下代码!
但是当滚动 recyclerView 项，重复 项数据。
首先请看我的logCat 和 image :
LogCat:
05-23 12:49:50.827 8191-8191/com.example.mac8.testapps E/timerLogList: 311
05-23 12:49:50.830 8191-8191/com.example.mac8.testapps E/timerLogList: 611
05-23 12:49:50.833 8191-8191/com.example.mac8.testapps E/timerLogList: -8746
05-23 12:49:50.836 8191-8191/com.example.mac8.testapps E/timerLogList: -8746
05-23 12:49:50.839 8191-8191/com.example.mac8.testapps E/timerLogList: -8746
05-23 12:49:50.842 8191-8191/com.example.mac8.testapps E/timerLogList: -8746
05-23 12:49:50.845 8191-8191/com.example.mac8.testapps E/timerLogList: -8746
05-23 12:49:50.848 8191-8191/com.example.mac8.testapps E/timerLogList: -8746
05-23 12:49:50.851 8191-8191/com.example.mac8.testapps E/timerLogList: -8746
05-23 12:49:50.854 8191-8191/com.example.mac8.testapps E/timerLogList: -8745
05-23 12:50:02.075 8191-8191/com.example.mac8.testapps E/timerLogList: -8756
05-23 12:50:02.110 8191-8191/com.example.mac8.testapps E/timerLogList: -8756
05-23 12:50:02.143 8191-8191/com.example.mac8.testapps E/timerLogList: -8756
05-23 12:50:02.160 8191-8191/com.example.mac8.testapps E/timerLogList: -8756
05-23 12:50:02.173 8191-8191/com.example.mac8.testapps E/timerLogList: -8756
05-23 12:50:02.190 8191-8191/com.example.mac8.testapps E/timerLogList: -8756
05-23 12:50:02.240 8191-8191/com.example.mac8.testapps E/timerLogList: -8756
我的应用程序图像:
在我的 logCat 只有两项有 time > 0 还可以，其他项目有 time < 0 。
但是为什么运行应用程序时在其他项目中显示计时器!
在 logCat第 8 项具有 E/timerLogList: -8746，但在图像中显示 00:06:30!
应显示成品标签。
<强> My Activity codes :
public class TimerRecyclerActivity extends AppCompatActivity {
private RecyclerView recyclerView;
private ProgressBar timerProgressBar;
private List<TodayGmodel> model = new ArrayList<>();
private Adapter adapter;
private ApiInterface api;
private LinearLayoutManager layoutManager;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_timer_recycler);
api = ApiClient.getClient().create(ApiInterface.class);
adapter = new Adapter(getApplicationContext(), model);
recyclerView = findViewById(R.id.timerRecyclerView);
timerProgressBar = findViewById(R.id.timerProgressBar);
layoutManager = new LinearLayoutManager(getApplicationContext());
recyclerView.setLayoutManager(layoutManager);
recyclerView.setAdapter(adapter);
Call<MainResponse> call = api.getMainAuctions("");
call.enqueue(new Callback<MainResponse>() {
@Override
public void onResponse(Call<MainResponse> call, Response<MainResponse> response) {
if (response.isSuccessful()) {
if (response.body().getRes() != null) {
if (response.body().getRes().getToday().size() > 0) {
timerProgressBar.setVisibility(View.GONE);
model.clear();
model.addAll(response.body().getRes().getToday());
adapter.notifyDataSetChanged();
}
}
}
}
@Override
public void onFailure(Call<MainResponse> call, Throwable t) {
}
});
}
}
<强> Adapter codes :
public class Adapter extends RecyclerView.Adapter<Adapter.ViewHolder> {
private List<TodayGmodel> model;
private Context context;
public Adapter(Context context, List<TodayGmodel> model) {
this.model = model;
this.context = context;
}
@Override
public Adapter.ViewHolder onCreateViewHolder(ViewGroup viewGroup, int i) {
View view = LayoutInflater.from(viewGroup.getContext()).inflate(R.layout.timer_adapter_layout, viewGroup, false);
return new ViewHolder(view);
}
@Override
public void onBindViewHolder(final Adapter.ViewHolder viewHolder, int position) {
TodayGmodel todayGmodel = model.get(position);
viewHolder.refreshTime(todayGmodel.getCalculateEnd());
Log.e("timerLogList", "" + model.get(position).getCalculateEnd());
}
@Override
public void onViewAttachedToWindow(@NonNull ViewHolder holder) {
int pos = holder.getAdapterPosition();
TodayGmodel todayGmodel = model.get(pos);
holder.refreshTime(todayGmodel.getCalculateEnd());
}
@Override
public void onViewDetachedFromWindow(@NonNull ViewHolder holder) {
if (holder.getDownTimer() != null)
holder.getDownTimer().cancel();
}
@Override
public int getItemCount() {
return model.size();
}
public class ViewHolder extends RecyclerView.ViewHolder {
public TextView tv_timer;
private CountDownTimer downTimer;
private long remainTime = 0;
public ViewHolder(View view) {
super(view);
tv_timer = view.findViewById(R.id.tv_timer);
}
public void refreshTime(long timer) {
if (timer > 0) {
downTimer = new CountDownTimer(timer * 1000, 1000) {
@Override
public void onTick(long millisUntilFinished) {
remainTime = millisUntilFinished / 1000;
int seconds = (int) (millisUntilFinished / 1000);
int hours = seconds / (60 * 60);
int tempMint = (seconds - (hours * 60 * 60));
int minutes = tempMint / 60;
seconds = tempMint - (minutes * 60);
tv_timer.setText(String.format("%02d", hours)
+ ":" + String.format("%02d", minutes)
+ ":" + String.format("%02d", seconds));
if (remainTime > 50) {
tv_timer.setBackgroundColor(ContextCompat.getColor(context, R.color.color1));
} else if (remainTime < 50 && remainTime > 20){
tv_timer.setBackgroundColor(ContextCompat.getColor(context, R.color.color2));
} else {
tv_timer.setBackgroundColor(ContextCompat.getColor(context, R.color.color4));
}
}
@Override
public void onFinish() {
}
}.start();
} else {
tv_timer.setText("Finish");
if (downTimer != null)
downTimer.cancel();
}
}
public CountDownTimer getDownTimer() {
return downTimer;
}
}
}
我该如何修复它？请帮助我，因为我真的需要你的帮助。
谢谢
最佳答案
重写适配器中的getItemId方法以避免滚动期间出现重复的项目。此外，您还必须将 setHasStableIds 设置为 true。
@Override
public long getItemId(int position) {
return position;
}
mAdapter.setHasStableIds(true)
关于java - 如何在 RecyclerView 中使用 CountDownTimer？，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/50484833/