如何在代码中设置UIButton的图像?
我有这个:
UIButton *btnTwo = [UIButton buttonWithType:UIButtonTypeRoundedRect];
btnTwo.frame = CGRectMake(40, 140, 240, 30);
[btnTwo setTitle:@"vc2:v1" forState:UIControlStateNormal];
[btnTwo addTarget:self action:@selector(goToOne) forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:btnTwo];
但不知道什么会为它设置图像。
当前回答
你可以这样做
[btnTwo setImage:[UIImage imageNamed:@"image.png"] forState:UIControlStateNormal];
其他回答
objective - c
UIImage *btnImage = [UIImage imageNamed:@"image.png"];
[btnTwo setImage:btnImage forState:UIControlStateNormal];
斯威夫特5.1
let btnImage = UIImage(named: "image")
btnTwo.setImage(btnImage , for: .normal)
swift 5+
let image = UIImage(named: "icons-multiply")?.withRenderingMode(.alwaysTemplate)
btn.setImage(image, for: .normal)
你可以这样做
[btnTwo setImage:[UIImage imageNamed:@"image.png"] forState:UIControlStateNormal];
如果是Swift用户
// case of normal image
let image1 = UIImage(named: "your_image_file_name_without_extension")!
button1.setImage(image1, forState: UIControlState.Normal)
// in case you don't want image to change when "clicked", you can leave code below
// case of when button is clicked
let image2 = UIImage(named: "image_clicked")!
button1.setImage(image2, forState: UIControlState.Highlight)
不用太担心从代码中构造按钮，你可以在故事板中完成。这对我很管用，一句台词……更简单。
[self.button setBackgroundImage:[UIImage imageNamed: @"yourPic.png"] forState:UIControlStateNormal];
