隱藏導航欄時位移/扭曲的按鈕（旋轉後）

Question

我的應用程序有兩個ViewController與NavigationController鏈接。第一個NavigationController有一個帶按鈕的視圖和一個帶標籤的視圖。這個視圖是一個循環旋轉菜單，它代表了我的主頁。視圖可以隨CGAffineTransformMakeRotation旋轉 - QuartzCore（顯然這是造成問題）在touchesMoved :.

我想隱藏導航欄只有在這種觀點，所以我用setNavigationBarHidden：YES上viewWillAppear中。然後在ViewWillDisappear上顯示吧。

在模擬器上，一切按預期工作，直到我旋轉第一個ViewController，當我旋轉然後點擊任何按鈕（轉到第二個ViewController）然後點擊返回（回到我的第一個ViewController），一切都會是distorted！

1. 我試圖通過添加來解決該問題[self.view的setBounds：[[UIScreen mainScreen]界限]]; * [self.view SETFRAME：[[UIScreen mainScreen]界限]]; *在viewDidLoad中方法或ViweWillAppear， 問題仍然存在。
2. 我試圖導航欄阿爾法在viewWillAppear中設置爲0和設置 它1 ViewWillDisappear，我試圖 self.navigationController.navigationBar.translucent = YES都 選項並沒有解決問題。
3. 我試圖以編程方式設置視圖，按鈕和標籤的位置 in ViewWillAppear並且它不能解決問題。
4. 我懷疑動畫，所以我刪除它，但它對問題沒有任何影響。

作爲初學者，我無法解決此問題，請幫忙！

ViewController.h（第一視圖控制器）

#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]; 
} 

Answer 1

是啊，我想通了這個問題...主視圖的自動調整大小正擠壓着我的子視圖當NavigationController被隱藏或沒有。所以我加了self.view.autoresizesSubviews = NO;以ViewDidLoad和問題已修復。