[英]Difference between current date and entered date in android
在這里,我發現了輸入日期和當前日期之間的差異。 我的意思是我試圖找到兩個日期之間的天數。 如果兩個日期都在同一個月,那么如果兩個日期都在不同月份,則我得到正確的值,則差值不正確。 我沒有得到如何糾正這一問題。
誰能幫助我得到這個?
這是我的代碼:
public class MyService extends Service {
String dayDifference;
NotificationManager manager;
Notification myNotication;
@Override public IBinder onBind(Intent intent) {
return null;
}//End of onBind method
public void onStart(Intent intent, int startId) {
super.onStart(intent, startId);
manager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
try {
//Dates to compare
String CurrentDate;
String FinalDate = "08/24/2016";
Date date1 = new Date();
Date date2;
SimpleDateFormat dates = new SimpleDateFormat("mm/dd/yyyy");
//Setting dates
date1.setTime(System.currentTimeMillis());
CurrentDate = dates.format(date1);
date2 = dates.parse(FinalDate);
date1 = dates.parse(CurrentDate);
//Comparing dates
long difference = Math.abs(date1.getTime() - date2.getTime());
long differenceDates = difference / (24 * 60 * 60 * 1000);
//Convert long to String
dayDifference = Long.toString(differenceDates);
Log.e("HERE.................", "HERE: " + dayDifference);
System.out.println("..............difference date " + dayDifference);
Uri soundUri = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
Intent targetIntent = new Intent(this, Mnst.class);
PendingIntent pendingIntent = PendingIntent.getActivity(this, 1, targetIntent, 0);
NotificationCompat.Builder builder = new NotificationCompat.Builder(this);
builder.setAutoCancel(true);
builder.setTicker("Predictor");
builder.setContentTitle("Miisky Notification");
builder.setContentText(
"You have " + dayDifference + " days left. Click on notification to know more..");
builder.setSmallIcon(R.drawable.miilogo);
builder.setSound(soundUri);
builder.setContentIntent(pendingIntent);
builder.setOngoing(true);
//builder.setSubText("Your vault number is " + s.vault_no); //API level 16
builder.setNumber(100);
builder.build();
//noinspection deprecation
myNotication = builder.getNotification();
builder.setAutoCancel(true);
manager.notify(11, myNotication);
Toast.makeText(getApplicationContext(), " " + dayDifference + " Days Left ",
Toast.LENGTH_LONG).show();
} catch (Exception exception) {
Log.e("DIDN'T WORK............", "exception " + exception);
}
}
}
此處輸入的日期為“ 08/24/2016”,當前日期為“ 09/28/2016”。 我得到4作為不正確的結果。 我想我必須使用Calendar或其他方法。但是沒有確切的方法來執行該操作。
根據文檔 ,字母m
被理解為分鍾。 為了引用月份,您需要使用大寫M
嘗試將您的SimpleDateFormat
更改為此:
SimpleDateFormat dates = new SimpleDateFormat("MM/dd/yyyy");
不要使用日期來執行此操作。嘗試使用這樣的日歷。
public static final int diffOfDay(Date d1,Date d2){
Calendar c1 = Calendar.getInstance();
c1.setTime(d1);
Calendar c2 = Calendar.getInstance();
c2.setTime(d2);
return c1.get(Calendar.DAY_OF_MONTH) - c2.get(Calendar.DAY_OF_MONTH);
}
我遇到過同樣的問題。
更改
return c1.get(Calendar.DAY_OF_MONTH) - c2.get(Calendar.DAY_OF_MONTH);
得到不同月份的日期差異
return c1.get(Calendar.DAY_OF_YEAR) - c2.get(Calendar.DAY_OF_YEAR);
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