我正在尝试为三个视图实现自定义布局。这些视图用于" Bars"," Clubs"和"食物"。
每个类别都有自己的自定义圈子视图。在圆圈视图中将是一个标签,其中包含文字。
当前设置
目前,三个视图被添加到Storyboard,并给出了相关的UIView
子类。然后子类处理它们并将其添加为标签。
- (id)init {
self = [super init];
if (self) {
[self setupView];
}
return self; }
-(void)setupView {
self.translatesAutoresizingMaskIntoConstraints = NO;
float newRadius = self.frame.size.width/2;
self.layer.cornerRadius = newRadius; // TODO / TEST - The UIImageView is set to 40x40 and the frame is yet to be created
self.layer.masksToBounds= YES;
self.layer.borderWidth = 5;
self.layer.borderColor = [UIColor colorWithRed:0.138 green:0.225 blue:1.000 alpha:1.000].CGColor;
self.backgroundColor = [self randomColor];
[self setupLabel];
}
-(void)setupLabel {
UILabel *label = [[UILabel alloc]init];
label.translatesAutoresizingMaskIntoConstraints = NO;
label.text = @"Test";
label.textColor = [UIColor whiteColor];
label.text = [label.text uppercaseString];
[self addSubview:label];
[self addConstraint:[NSLayoutConstraint constraintWithItem:label attribute:NSLayoutAttributeCenterX relatedBy:NSLayoutRelationEqual toItem:self attribute:NSLayoutAttributeCenterX multiplier:1.0 constant:0]];
[self addConstraint:[NSLayoutConstraint constraintWithItem:label attribute:NSLayoutAttributeCenterY relatedBy:NSLayoutRelationEqual toItem:self attribute:NSLayoutAttributeCenterY multiplier:1.0 constant:0]];
}
但是,通过上面的设置,我无法想到如何使用不同的标签文本实现每个圆形视图?
处理此自定义视图和布局的最佳方法是什么。在代码中完全创建圆形视图并更改自定义init方法以便为标签传递NSString会更好吗?
答案 0 :(得分:1)
您可以在自定义UIView中创建名为text的属性,然后使用User Runtime Attributes进行更改。
在Interface Builder中,您可以:
然后您可以在CustomView中覆盖:
// This method will get called for each attribute you define.
-(void) setValue:(id)value forKey:(NSString *)key {
if ([key isEqualToString:@"text"]) {
self.mylabel.text = value;
}
}
请注意,您需要在属性中添加标签。 @property (nonatomic, weak) UILabel* myLabel
因此,当您设置标签时,您需要:
-(void)setupLabel {
UILabel *label = [[UILabel alloc]init];
//...
[self addSubview:label];
//the label, since it is weak, needs to be added to the visual tree first
self.myLabel = label;
}