我的应用程序有两个与NavigationController链接的ViewControllers。 First NavigationController有一个带按钮的视图和一个带标签的视图。此视图是一个圆形旋转菜单,它代表我的主页。视图可以使用CGAffineTransformMakeRotation旋转 - QuartzCore(显然它导致问题)在touchesMoved上:。
我只想在此视图中隐藏NavigationBar,因此我在 ViewWillAppear 上使用了 setNavigationBarHidden:YES 。然后在 ViewWillDisappear 上显示该栏。
在模拟器上,一切都按预期工作,直到我旋转第一个ViewController,当我旋转然后点击任何按钮(转到第二个ViewController)然后点击Back(回到我的第一个ViewController),一切都将是distorted!
作为初学者,我无法解决此问题,请帮忙!
ViewController.h (第一个ViewController)
#import <UIKit/UIKit.h>
#import <QuartzCore/QuartzCore.h>
@interface ViewController : UIViewController
@property (nonatomic, strong) IBOutlet UIView *aView;
@property (nonatomic, strong) IBOutlet UIView *bView;
@property (nonatomic, strong) IBOutlet UIButton *bimg1;
…
@property (strong, nonatomic) IBOutlet UILabel *label1;
…
-(void) rotateTo:(CGFloat)x andY:(CGFloat)y;
@end
ViewController.m
#import "ViewController.h"
@implementation ViewController
@synthesize aView = _aView;
…
@synthesize bimg1 = _bimg1;
…
@synthesize label1 = _label1;
…
static inline double toradians (double degrees) {
return degrees * M_PI/180;
}
-(void)viewDidLoad {
![enter image description here][1][super viewDidLoad];
//Set text font
[_label1 setFont:[UIFont fontWithName:@"Consolas" size:16]];
…
[self.view setBounds:[[UIScreen mainScreen]bounds]];
[self.view setFrame:[[UIScreen mainScreen]bounds]];
}
-(void)viewWillAppear:(BOOL)animated {
self.navigationController.navigationBar.hidden = YES;
printf("Aview x: %f | Aview y: %f \n",self.aView.frame.origin.x, self.aView.frame.origin.y);
printf("Aview width: %f | Aview height: %f \n",self.aView.frame.size.width, self.aView.frame.size.height);
}
-(void)viewWillDisappear:(BOOL)animated {
self.navigationController.navigationBar.hidden = NO;
}
-(void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event{
UITouch *touch = [touches anyObject];
CGPoint LastTouchPoint = [touch locationInView:self.view];
CGFloat LasTouchx = LastTouchPoint.x;
CGFloat LasTouchy = LastTouchPoint.y;
CGPoint CenterPoint = self.view.center;
CGFloat x = LasTouchx - CenterPoint.x;
[self rotateTo:x andY:y];
}
-(void) rotateTo:(CGFloat)x andY:(CGFloat)y {
CGFloat angle = x/y;
angle = atan(angle);
angle = angle * 360/M_PI;
angle *= 0.0174532925;
[UIView beginAnimations:nil context:nil];
[UIView setAnimationDelegate:self];
[UIView setAnimationCurve:UIViewAnimationCurveEaseOut];
[UIView setAnimationDuration:1];
self.aView.transform=CGAffineTransformMakeRotation(-angle);
self.bView.transform=CGAffineTransformMakeRotation(-angle);
self.bimg1.transform=CGAffineTransformMakeRotation(angle);
self.bimg2.transform=CGAffineTransformMakeRotation(angle);
self.bimg3.transform=CGAffineTransformMakeRotation(angle);
self.bimg4.transform=CGAffineTransformMakeRotation(angle);
self.label1.transform=CGAffineTransformMakeRotation(angle);
self.label2.transform=CGAffineTransformMakeRotation(angle);
self.label3.transform=CGAffineTransformMakeRotation(angle);
self.label4.transform=CGAffineTransformMakeRotation(angle);
[UIView commitAnimations];
}
- (void)viewDidUnload
{
[self setBimg1:nil];
…
[self setAView:nil];
[self setBView:nil];
[super viewDidUnload];
}
答案 0 :(得分:2)
是的,我发现了问题......当ViewController被隐藏或未被隐藏时,主视图的自动调整会挤压我的子视图。所以我添加了self.view.autoresizesSubviews = NO;到ViewDidLoad并解决了问题。