iOS Question change button backcolor?

[ilan]

how can i change the button backcolor?

Sub SetBackgroundImage(b As Button, cr1 As String , state As Int)
    Dim no As NativeObject = b
    no.RunMethod("setBackgroundColor:forState:", Array(cr1, state))
End Sub

this doesnot work

 

[narek adonts]

Just use button.color=colors.blue for exemple
If you need to track the touchdown and touchup events you can use my GestureRecognizer class

 

[ilan]

Just use button.color=colors.blue for exemple
If you need to track the touchdown and touchup events you can use my GestureRecognizer class

should be done easier ... only set 2 states with different backcolors...

 

[narek adonts]

Ok.
Why clr is a string? i think it should be a UIColor.

You can use no.colortoUIColor

 

[narek adonts]

try this - NOT TESTED

Sub SetBackgroundImage(b As Button, cr1 As Int , state As Int)
    Dim no As NativeObject = b
    no.RunMethod("setBackgroundColor:forState:", Array(no.ColorToUIColor(cr1), state))
End Sub

 

[ilan]

Method not found: setBackgroundColor:forState:, target: <UIButton: 0x1569ab40; frame = (50 323.478; 190 62.6087); opaque = NO; gestureRecognizers = <NSArray: 0x1569bce0>; layer = <CALayer: 0x1567a6e0>>

i guess their is no background color with state in ios but title color works

Sub SetTitleColor(b As Button, cr1 As Int , state As Int)
    Dim no As NativeObject = b
    no.RunMethod("setTitleColor:forState:", Array(no.ColorToUIColor(cr1), state))
End Sub

use: SetTitleColor(startbtn,Colors.Green,1)

thanks anyway

EDIT: i solved it by adding a bitmap to state 1 with the background color i wanted so like this there is only for state 1 a background image and state 0 is the backcolor i choose, thanx