我正在开发iOS 5.0+应用程序与最新的SDK。CGAffineTransformMakeRotation移动UILabel
我有一个自定义UIView
(使用自定义XIB)和四UILabel
,我想这个代码使它们旋转90度:
- (void)layoutSubviews
{
[self rotateToLandscape];
}
- (void)rotateToLandscape
{
NSLog(@"Label 1: %@", NSStringFromCGRect(self.label1.frame));
NSLog(@"Label 2: %@", NSStringFromCGRect(self.label2.frame));
NSLog(@"Label 3: %@", NSStringFromCGRect(self.label3.frame));
NSLog(@"Label 4: %@", NSStringFromCGRect(self.label4.frame));
self.label1.transform = CGAffineTransformMakeRotation(M_PI/2);
NSLog(@"Label 1: %@", NSStringFromCGRect(self.label1.frame));
self.label2.transform = CGAffineTransformMakeRotation(M_PI/2);
NSLog(@"Label 2: %@", NSStringFromCGRect(self.label2.frame));
self.label3.transform = CGAffineTransformMakeRotation(M_PI/2);
NSLog(@"Label 3: %@", NSStringFromCGRect(self.label3.frame));
self.label4.transform = CGAffineTransformMakeRotation(M_PI/2);
NSLog(@"Label 4: %@", NSStringFromCGRect(self.label4.frame));
}
但是,我不为什么,全部住在这相同的位置。
这是日志,我得到:
Label 1: {{15, 0}, {71, 21}}
Label 2: {{15, 29}, {71, 21}}
Label 3: {{15, 58}, {71, 21}}
Label 4: {{15, 78}, {71, 21}}
Label 1: {{40, -25}, {21, 71}}
Label 2: {{40, 4}, {21, 71}}
Label 3: {{40, 33}, {21, 71}}
Label 4: {{40, 53}, {21, 71}}
我阅读,我不得不从它的中心旋转UILabel
(或者从它的左上角),但我不知道该怎么做。
这就是我得到:
而且,如果我展示中心登录:
- (void)rotateToLandscape
{
NSLog(@"Label 1: %@", NSStringFromCGPoint(self.label1.center));
NSLog(@"Label 2: %@", NSStringFromCGPoint(self.label2.center));
NSLog(@"Label 3: %@", NSStringFromCGPoint(self.label3.center));
NSLog(@"Label 4: %@", NSStringFromCGPoint(self.label4.center));
self.label1.transform = CGAffineTransformMakeRotation(M_PI/2);
NSLog(@"Label 1: %@", NSStringFromCGPoint(self.label1.center));
self.label2.transform = CGAffineTransformMakeRotation(M_PI/2);
NSLog(@"Label 2: %@", NSStringFromCGPoint(self.label2.center));
self.label3.transform = CGAffineTransformMakeRotation(M_PI/2);
NSLog(@"Label 3: %@", NSStringFromCGPoint(self.label3.center));
self.label4.transform = CGAffineTransformMakeRotation(M_PI/2);
NSLog(@"Label 4: %@", NSStringFromCGPoint(self.label4.center));
}
我得到这个日志:
Label 1: {50.5, 10.5}
Label 2: {50.5, 39.5}
Label 3: {50.5, 68.5}
Label 4: {50.5, 88.5}
Label 1: {50.5, 10.5}
Label 2: {50.5, 39.5}
Label 3: {50.5, 68.5}
Label 4: {50.5, 88.5}
不旋转:
这些标签都在里面上UIView
,我想我需要旋转即父视图,而不是旋转每个UILabel
。
有什么建议吗?轮转之后,我必须移动每个UILabel
吗?
谢谢您的回答。正如你所看到的,在这方面很新颖,你知道是否有一个例子可以让我学习如何做到这一点?谢谢。 – VansFannel 2013-04-08 17:14:10
@VansFannel **什么是“它”?旋转转角?你的代码中的方法称为'rotateToLandscape',但你不应该自己做,只需配置视图控制器以允许横向和纵向。 – 2013-04-08 19:26:06
谢谢,但这不能回答我的问题。 – VansFannel 2013-04-08 19:41:06