根据另一个变量设置按钮图像？ 迅速

Question

so I'm very new to swift. I currently have 16 buttons all set to individual outlets box1,box2,box3 etc.

Each box I have set a tag and what I am trying to do is set the image of a particular box based off another integer variable to determine which box I'm changing.

So say I do a calculation and index = 4. Is there a way I can then set box(index).setImage?

I understand this probably isn't the best way to do it or even possible, maybe I can set each button to an array of objects instead? Any tips would be great.

Answer 1

If you want to set the image of button through some tag then you don't need any outlets for the buttons.

You can change your button image by finding the button through viewWithTag() property.

Here is the code

var button = self.view.viewWithTag(Your_Calculated_Index) as! UIButton
button.setImage(Your_Image, for: .normal)

Answer 2

You can try this. You need to create an array for the button.

@IBOutlet var allbtns: [UIButton]!

for buttons in allbtns{
    if buttons.tag == 4{
        print("Button 4 ");
        buttons.setImage(UIImage(named: "imagname"), for: UIControlState.normal)
    }else{
        print("Other buttons except 4 ");
    }
}