Map - Problem with get

margret

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• Aug 5, 2012

• #2

You have m.size / 9. this will result in a non int variable depending on the value of m.size. You should do this before the loop and convert the answer to an int if it is not.

 

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stefanoa

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• Aug 5, 2012

• #3

m.size is multiple of 9 but however variable "i" is always int, because start at 0, with step 1 and finish at (m.size /9)

correction: in the 1' code is: filesMap.put( m.Get("ID"), m.Get("Title"))

PS: in LOG it's all ok: in the example: Key:33297 - Value:Everybody's Broken but the "get" return Value=NULL !

 

Last edited: Aug 5, 2012

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margret

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• Aug 5, 2012

• #4

Try your MsgBox() with filesMap.ContainsKey(yourkeyhere) and see if it returns a result.

 

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stefanoa

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• Aug 5, 2012

• #5

containskey it's always "false"

B4X:

For i = 0 To filesMap.Size - 1
   Log("Key:" & filesMap.GetKeyAt(i) & " - " & "Value:" & filesMap.GetValueAt(i))
Next 

Msgbox(filesMap.ContainsKey(33297) , "") 
or
Msgbox(filesMap.ContainsKey("33297") , "")

for next >>> Key:33297 - Value:Everybody's Broken
ContainsKey >>> is always false

 

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margret

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• Aug 5, 2012

• #6

OK, in your loop that shows the key 33297, also log the length of it to the log. It should be 5. Maybe there is a hidden character, etc. So see what the logged length is.

 

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stefanoa

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• Aug 5, 2012

• #7

ok..I solved it by putting ID to a string variable:

B4X:

Dim x As String
x=m.Get("ID" & i)
filesMap.put( x,m.Get("Title" & i))
...

and then, to retrieve the value:

B4X:

Dim x As String
x=IDx    '--- IDx it's a INT and contain ID value
Msgbox(filesMap.get(x) , "value")

thanks for support!

 

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margret

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• Aug 5, 2012

• #8

Great, glad you got it!!

 

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C

CharlesIPTI

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• Aug 23, 2012

• #9

Map get Or GetValueAt

Personally Don't Like Map.Get
its all very convoluted

Attached Project...
Hope it helps someone

 

Attachments

• Small Map Kraizness.zip

  5.7 KB · Views: 216

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mr23

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• Aug 9, 2015

• #10

+1.

Had code with .Get using an Int, used to work, just had to change it to String, and now its back to working.

Tilters: Sufficient context. Get doesn't behave the same with Int as String. Provided solution without having to Open a project.

 

Last edited: Aug 9, 2015

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DonManfred

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• Aug 9, 2015

• #11

This is an OLD thread! Please start a new thread providing much more informations on what you did, what you expected and what you got.

But do this in a new thread

 

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