如何在UITextField子类中设置UITextField属性

Question

我有这个UITextField子类，我想将一个属性设置为UITextField的背景色、边框等。我不知道，如果我使用正确的方法，因为当我将这个类用于UItextField时，UITextField不会改变..我必须用哪种方法来声明这个属性？

#import "defaultUITextField.h"

@implementation defaultUITextField

- (id)initWithFrame:(CGRect)frame
{
    self = [super initWithFrame:frame];
    if (self) {
        self.delegate = self;
        [self setBackgroundColor:([UIColor redColor])];

        UIColor *borderColor = [UIColor colorWithRed:233.0/255.0 green:233.0/255.0 blue:233.0/255.0 alpha:233.0/255.0];

        self.leftView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 5, 20)];
        self.leftViewMode = UITextFieldViewModeAlways;

        self.layer.borderColor = [borderColor CGColor];
        self.layer.borderWidth = 1.0f;
    }
    return self;
}

@end

Answer 1

你的解决方案似乎是对的。你是如何将你的suctom TextField放在视图上的？如果您在Interface中创建了TextField，那么您就高估了错误的构造函数。

- (id)initWithCoder:(NSCoder *)inCoder {
    if (self = [super initWithCoder:inCoder]) {
        self.delegate = self;
        [self setBackgroundColor:([UIColor redColor])];

        UIColor *borderColor = [UIColor colorWithRed:233.0/255.0 green:233.0/255.0 blue:233.0/255.0 alpha:233.0/255.0];

        self.leftView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 5, 20)];
        self.leftViewMode = UITextFieldViewModeAlways;

        self.layer.borderColor = [borderColor CGColor];
        self.layer.borderWidth = 1.0f;
    }
    return self;
}

当您在IB中创建UItextField并将其类更改为UITextField时，将调用此构造函数。