我可以在textField上更改clearButtonMode的颜色吗?
theTextField.clearButtonMode = UITextFieldViewModeWhileEditing
显示一个灰色深色的x,用于删除textField,
但是我可以用白色显示这个按钮吗?
感谢
答案 0 :(得分:30)
在这种情况下,您需要创建自己的清除按钮图像。我建议拍一下清晰按钮的屏幕截图并在photoshop中进行编辑。
您可以拍摄该图像并使用图像尺寸创建UIButton。从那里你可以将它设置为UITextField的rightView。像这样:
UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom];
[button setImage:[UIImage imageNamed:@"clear_button.png"] forState:UIControlStateNormal];
[button setFrame:CGRectMake(0.0f, 0.0f, 15.0f, 15.0f)]; // Required for iOS7
theTextField.rightView = button;
theTextField.rightViewMode = UITextFieldViewModeWhileEditing;
我输入了没有语法检查的内容,但是在运行它之前你不想这样做。您还需要将clear_button.png替换为您的图像名称。
您还需要编写自己的方法来清除文本字段。
答案 1 :(得分:7)
更简洁的方法是使用此方法在UITextField上实现类别:
- (void)modifyClearButtonWithImage:(UIImage *)image {
UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom];
[button setImage:image forState:UIControlStateNormal];
[button setFrame:CGRectMake(0.0f, 0.0f, 15.0f, 15.0f)];
[button addTarget:self action:@selector(clear:) forControlEvents:UIControlEventTouchUpInside];
self.rightView = button;
self.rightViewMode = UITextFieldViewModeWhileEditing;
}
-(IBAction)clear:(id)sender{
self.text = @"";
}
答案 2 :(得分:6)
Swift版本:
extension UITextField {
func modifyClearButtonWithImage(image : UIImage) {
let clearButton = UIButton(type: .Custom)
clearButton.setImage(image, forState: .Normal)
clearButton.frame = CGRectMake(0, 0, 40, 40)
clearButton.contentMode = .ScaleAspectFit
clearButton.addTarget(self, action: #selector(UITextField.clear(_:)), forControlEvents: .TouchUpInside)
self.rightView = clearButton
self.rightViewMode = .WhileEditing
}
func clear(sender : AnyObject) {
self.text = ""
}
}
答案 3 :(得分:2)
Swift 4.1版本
extension UITextField {
func modifyClearButtonWithImage(image : UIImage) {
let clearButton = UIButton(type: .custom)
clearButton.setImage(image, for: .normal)
clearButton.frame = CGRect(x: 0, y: 0, width: 40, height: 40)
clearButton.contentMode = .scaleAspectFit
clearButton.addTarget(self, action: #selector(UITextField.clear(sender:) ), for: .touchUpInside)
self.rightView = clearButton
self.rightViewMode = .whileEditing
}
@objc func clear(sender : AnyObject) {
self.text = ""
sendActions(for: .editingChanged)
}
}
答案 4 :(得分:0)
在配置textField时,请使用:
let clearButton : UIButton = textField.value(forKey: "_clearButton") as! UIButton
let image = UIImage(named: "ClearWhite")
clearButton.setImage(image, for: .normal)
clearButton.backgroundColor = UIColor.clear