Android Question How to cast an object to string?

Midimaster · Jul 22, 2020

The MAP.GET() returns my string as an object. Now I want to trim the string, but how to cast an object to string?

B4X:

'this is easy:
Dim word as String = MyPropery.Get("Name")
word = word.Trim

'but how to cast in one line?
'this will not work:
Dim oneLine as String = MyPropery.Get("Name").Trim
Dim anotherLine as String = String(MyPropery.Get("Name")).Trim

is there a way to do this in B4X?

Erel · Jul 22, 2020

This cannot work: Dim oneLine as String = MyPropery.Get("Name").Trim
There is no relation between the value returned from Map.Get and the left side type.

You will need to use a variable or a sub like this:

B4X:

Sub GetProperty(Key As String) As String
Return MyProperty.Get(Key)
End Sub

B4X:

Dim OneLine As String = GetProperty("Name").Trim

emexes · Jul 22, 2020

Or you could try a sub like this:

B4X:

Sub CastToString(S As String) As String
    Return S
End Sub

and then doing casts to String like this:

B4X:

Dim OneLine As String = CastToString( MyProperty.Get("Name") ).Trim

Midimaster · Jul 22, 2020

ok, i have to write the casting functions. i see...

thank you

Android Question How to cast an object to string?

Midimaster

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Erel

B4X founder

emexes

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Midimaster

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Android Question How to cast an object to string?

Midimaster

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