屏幕旋转

 1 #import "MyView.h"
 2 
 3 @implementation MyView
 4 
 5 -(instancetype)initWithFrame:(CGRect)frame
 6 {
 7     if (self = [super initWithFrame:frame]) {
 8         _lable =[[UILabel alloc] initWithFrame:CGRectMake(0, 0, 100, 30)];
 9         _lable.backgroundColor = [UIColor redColor];
10         [self addSubview:_lable ];
11     }
12     return self;
13 }
14 
15 -(void)layoutSubviews
16 {
17     if ([UIApplication sharedApplication].statusBarOrientation == UIInterfaceOrientationLandscapeLeft || [UIApplication sharedApplication].statusBarOrientation == UIInterfaceOrientationLandscapeRight) {
18         
19         _lable.frame = CGRectMake(0, 0, 400, 30);
20         
21         
22     }else{
23 
24         _lable.frame = CGRectMake(0, 0, 100, 30);
25     }
26     NSLog(@"天天就知道旋转");
27 }
28 @end