how to change backgroundcolor of uibutton programatically

问题

I want to change the background color of a button to black.

I have tried so many codes. but didn't works fine.

How would I do it?

回答1:

If you want to programatically change the colour of button you will have to make the type of button as custom as :-

UIButton *button = [UIButton buttonWithType:uibuttontypecustom];
note "uibuttontypecustom"

and then you can change backgroung by [btn setBackgroundColor:[UIColor blackColor]]; or you can set a black backgroung image by using steImage method on btn.

回答2:

Mr/Ms Baiju please review below my code,

UIButton *button = [UIButton buttonWithType:UIButtonTypeRoundedRect];
button.frame = CGRectMake(10, 200, 300, 40);
[button setTitle:@"Button" forState:UIControlStateNormal];
[button addTarget:self action:@selector(buttonAction) forControlEvents:UIControlEventTouchUpInside];
[button setBackgroundColor:[UIColor blackColor]];
[button setImage:[UIImage imageNamed:@"image.png"] forState:UIControlStateNormal];
[self.view addSubview: button];

I think it will help you to set background color and set background image for a button. If you want to set image please change the button type RoundedRect to Custom. I hope it will help you little bit. Thanks.

回答3:

I think this will help you,

[button setBackgroundColor:[UIColor redColor]];

回答4:

Use this line of code and try use any color image .

[myButton setImage:[UIImage imageNamed:@"image.png"] forState:UIControlStateNormal];

回答5:

If anyone wants to know how to make same thing in swift with full code then here it is...Just write this code in your ViewController.swift

import UIKit

class ViewController: UIViewController
{ 
    var firstbutton:UIButton? //firstbutton = Your Button Name

    override func viewDidLoad() {
        super.viewDidLoad()
        self.firstbutton = UIButton.buttonWithType(UIButtonType.Custom) as? UIButton
        self.firstbutton!.frame = CGRectMake(100, 200, 100, 100)

        //This Line is used for color of your button

        self.firstbutton!.backgroundColor = UIColor.redColor()
        self.view.addSubview(firstbutton!)
    }

    //This section is used to bring the button in front of everything on the view

    override func viewDidAppear(animated: Bool) {
        self.view.bringSubviewToFront(self.firstbutton!)
    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
    }

回答6:

in your XIB drag and drop a button. got to button properties in your right hand side and set button type to custom. (Or you can do than in code too). In your .h file create UIButton * btn; and bind it to the XIB.

Then go to .m file and in viewdidload method right this code.

[btn setBackgroundColor:[UIColor blackColor]];

Thanks :)

回答7:

Change the layer colour e.g. self.btn.layer.backgroundColor = [UIColor redColor].CGColor;

来源：https://stackoverflow.com/questions/10493600/how-to-change-backgroundcolor-of-uibutton-programatically

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ios

uikit