Android Question help with datetime

A

apty

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I have the following code that picks time in 24 hour format
B4X: 
  DateTime.TimeFormat="HH:mm"
  timenow=DateTime.Time(DateTime.Now)
  lbltime.Text=timenow

I would like to add 3 minutes to lbltime.Text. How can i do that? I know i can add the minutes to timenow, but I want to add them to lbltime (later after i have already set lbltime)
 
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DonManfred

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B4X: 
Dim timenow As Long
DateTime.TimeFormat="HH:mm"
timenow=DateTime.Now
Log("TimeNow: "&DateTime.Time(timenow))
Dim per As Period
per.Initialize
per.Minutes = 3
Log("New Time: "&DateTime.Time(DateUtils.AddPeriod(timenow,per)))

Note that you need to check the library DateUtils
 
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A

apty

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It gives me an error
invalid double: "20:33" when i try to capture the time in a textview so that i can put it in the lbltime label
 
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A

apty

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B4X: 
lbltime.Text=txtSettime.Text
    Dim servtime As String
    Dim per As Period
    per.Initialize
    per.Minutes = 2
    'Log("New Time: "&DateTime.Time(DateUtils.AddPeriod(lbltime.Text,per)))
   
    servtime=DateTime.Time(DateUtils.AddPeriod(lbltime.Text,per))
    lbltimetowritetoserver.Text=servtime

That is the code
 
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DonManfred

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AddPeriod expects a first parameter a datetime (a long)... You also DID NOT recognized my hint about parse...
you first need to convert the string to a datetime value... USE the forumsearch

DateTime.TimeFormat="HH:mm"
Dim timenow As Long
timenow = DateTime.TimeParse(EditText1.Text)
Log("TimeNow: "&DateTime.Time(timenow))
Dim per As Period
per.Initialize
per.Minutes = 3
Log("New Time: "&DateTime.Time(DateUtils.AddPeriod(timenow,per)))
 
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Cableguy

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DonManfred said:
You also DID NOT recognized my hint about parse...
you first need to convert the string to a datetime value... USE the forumsearch
Click to expand...


Date and Time values are presented in Ticks, therefore the need to parse them from human values to machine readable ones
DateTime.TimeFormat="HH:mm"
Dim timenow As Long
timenow = DateTime.TimeParse(EditText1.Text)
Log("TimeNow: "&DateTime.Time(timenow))
Dim per As Period
per.Initialize
per.Minutes = 3
Log("New Time: "&DateTime.Time(DateUtils.AddPeriod(timenow,per))
 
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A

apty

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i tried the following
B4X: 
lbltime.Text=txtSettime.Text

    Dim servtime As Long
    Dim diskwtime As Long
    Dim per As Period
    'servtime=DateTime.TimeParse(lbltime.Text)
    diskwtime=DateTime.TimeParse(lbltime.Text)
    per.Initialize
    per.Minutes = 2
   
    diskwtime=lbltime.Text
    servtime=DateTime.Time(DateUtils.AddPeriod(diskwtime,per))
    lbltimetowritetoserver.Text=servtime
But i still get invalid double error
 
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DonManfred

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Sure you get an error...

B4X: 
 Dim servtime As Long
    Dim diskwtime As Long
    Dim per As Period
    'servtime=DateTime.TimeParse(lbltime.Text)
    diskwtime=DateTime.TimeParse(lbltime.Text) ' <--- Here you are doing it right
    per.Initialize
    per.Minutes = 2

    diskwtime=lbltime.Text ' <-- here you are doing the same error as before...BTW: This line is not needed
    servtime=DateTime.Time(DateUtils.AddPeriod(diskwtime,per))
    lbltimetowritetoserver.Text=servtime
 
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A

apty

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I have commented the line
B4X: 
diskwtime=lbltime.Text
out. But the error is still there
 
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DonManfred

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You should do debugging. WHICH error yxou get exactly? Which code are you using?
Which line of code runs when the error occurs...

My code above works. I have tested.

Actually i´m not sure which line should bring this error...

You can upload your actual project and we can have a look. OR you give us more detailed informations...
 
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