AutororesizingMask和固定边距的麻烦
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09-10-2019 - |
题
我正在尝试将其与ViewController的视图中的代码一起使用:
但是我无法工作。
我试过了
-(void)loadView {
UIView *contentView = [[[UIView alloc] init] autorelease];
self.view = contentView;
UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom];
button.frame = CGRectMake(5,5,0,100);
button.autoresizingMask = UIViewAutoresizingFlexibleWidth;
[contentView addSubview:button];
}
但是按钮的宽度仍然是Supperiew的宽度...
我敢肯定有一个简单的解释。
谢谢大家!
安东尼奥
解决方案
-initWithFrame:
是Uiview的指定初始化器。在Mac侧(nsview),我知道使用时可能会发生奇怪的事情 -init
代替 -initWithFrame:
. 。也许这是问题?
其他提示
而不是打扰 autoresizingMask
旗,我覆盖 layoutSubviews
按照习惯 UIView
子类:
- (void)loadView { self.view = [ContentView view]; self.view.frame = CGRectMake(0, 0, 30, 100); }
在哪里 ContentView
被定义为:
@interface ContentView : UIView { UIButton *button; } + (id)view; @end @implementation ContentView { + (id)view { return [[self new] autorelease]; } - (id)initWithFrame:(CGRect)frame { if (self = [super initWithFrame:frame]) { button = [UIButton buttonWithType:UIButtonTypeCustom]; [self addSubview:button]; // Retains the button. } return self; } - (void)layoutSubviews { const CGFloat margin = 5; CGRect size = self.frame.size; button.frame = CGRectMake(margin, margin, size.width - 2 * margin, size.height - 2 * margin); } }
尝试此代码。
- (void)loadView
{
CGRect screenBounds = [UIScreen mainScreen].bounds;
UIView *contentView = [[[UIView alloc] initWithFrame:screenBounds] autorelease];
self.view = contentView;
UIButton *button = [UIButton buttonWithType:UIButtonTypeRoundedRect];
button.frame = CGRectMake(5,5,screenBounds.size.width - 10,100);
[button setTitle:@"hello" forState:UIControlStateNormal];
button.autoresizingMask = UIViewAutoresizingFlexibleWidth;
[contentView addSubview:button];
}
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