自定义 AlertViewController 未在横向中正确显示
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【中文标题】自定义 AlertViewController 未在横向中正确显示【英文标题】：Custom AlertViewController not displaying properly in Landscape 【发布时间】：2014-07-10 16:36:37 【问题描述】：我有一个自定义的 alterviewcontroller，它是 UIViewController 的子类。它在纵向应用程序中效果很好，但在横向应用程序中，它遇到了框架方向的问题。我已经尝试了一堆修复，但似乎没有一个是正确的。
在当前版本中，它可以正确显示，但主视图大小错误，因此该视图之外的按钮不可点击。
在此图像中，Next Turn 按钮不可点击，Go to Black 按钮可点击。这是左边的风景。
.h 文件
#import <UIKit/UIKit.h> #import "SPRTitleFontLabel.h" @protocol SPRAlertViewControllerDelegate; @interface SPRAlertViewController : UIViewController @property (nonatomic, weak) id <SPRAlertViewControllerDelegate> delegate; @property (weak, nonatomic) IBOutlet UIView *alertview; @property (weak, nonatomic) IBOutlet SPRTitleFontLabel *titleLabel; @property (weak, nonatomic) IBOutlet UITextView *messageLabel; @property (weak, nonatomic) IBOutlet UIButton *yesButton; @property (weak, nonatomic) IBOutlet UIButton *noButton; @property (weak, nonatomic) IBOutlet UIButton *okButton; @property int tag; -(void)setTitle:(NSString *)title message:(NSString *)message andButtonCount:(int)buttonCount; - (IBAction)doDismiss:(id)sender; - (void)show; @end @protocol SPRAlertViewControllerDelegate <NSObject> - (void)alert:(SPRAlertViewController *)alert didDismissWithButtonClick:(int)buttonIndex; @end
.m 文件
#import "SPRAlertViewController.h" #import "SPRAudioHelper.h" @interface SPRAlertViewController () UIWindow *alertWindow; @end @implementation SPRAlertViewController +(instancetype)new SPRAlertViewController *alvc = [super new]; return alvc; - (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil]; if (self) alertWindow = [self windowWithLevel:UIWindowLevelAlert]; if (!alertWindow) //rotate the window frame to get the right orientation CGRect tempFrame = [UIScreen mainScreen].bounds; CGRect tempFrame2 = tempFrame; tempFrame2.size.height = tempFrame.size.width; tempFrame2.size.width = tempFrame.size.height; alertWindow = [[UIWindow alloc] initWithFrame:tempFrame2]; alertWindow.windowLevel = UIWindowLevelAlert; [alertWindow makeKeyAndVisible]; NSLog(@"window frame %@", NSStringFromCGRect(alertWindow.frame)); alertWindow.rootViewController = self; return self; - (void)setTitle:(NSString *)title message:(NSString *)message andButtonCount:(int)buttonCount self.titleLabel.text = title; self.messageLabel.text = message; if (buttonCount == 1) self.yesButton.hidden = YES; self.noButton.hidden = YES; self.okButton.hidden = NO; else self.yesButton.hidden = NO; self.noButton.hidden = NO; self.okButton.hidden = YES; CGRect frame = self.messageLabel.frame; CGSize size = [self.messageLabel sizeThatFits:CGSizeMake(self.messageLabel.frame.size.width, FLT_MAX)]; frame.size.height = size.height; self.messageLabel.frame = frame; [self.messageLabel setNeedsDisplay]; float buttonTop = frame.size.height + frame.origin.y; self.yesButton.frame = CGRectMake(self.yesButton.frame.origin.x, buttonTop, self.yesButton.frame.size.width, self.yesButton.frame.size.height); self.noButton.frame = CGRectMake(self.noButton.frame.origin.x, buttonTop, self.noButton.frame.size.width, self.noButton.frame.size.height); self.okButton.frame = CGRectMake(self.okButton.frame.origin.x, buttonTop, self.okButton.frame.size.width, self.okButton.frame.size.height); self.alertview.frame = CGRectMake(self.alertview.frame.origin.x, self.alertview.frame.origin.y, self.alertview.frame.size.width, buttonTop+55); NSLog(@"parent frame %@", NSStringFromCGRect(self.parentViewController.view.frame)); NSLog(@"view frame %@", NSStringFromCGRect(self.view.frame)); NSLog(@"alert frame %@", NSStringFromCGRect(self.alertview.frame)); NSLog(@"button frame %@", NSStringFromCGRect(self.yesButton.frame)); - (void)viewDidLoad [super viewDidLoad]; // Do any additional setup after loading the view from its nib. UIInterpolatingMotionEffect* m1 = [[UIInterpolatingMotionEffect alloc] initWithKeyPath:@"center.x" type:UIInterpolatingMotionEffectTypeTiltAlongHorizontalAxis]; m1.maximumRelativeValue = @0.0; m1.minimumRelativeValue = @0.0; UIInterpolatingMotionEffect* m2 = [[UIInterpolatingMotionEffect alloc] initWithKeyPath:@"center.y" type:UIInterpolatingMotionEffectTypeTiltAlongVerticalAxis]; m2.maximumRelativeValue = @20.0; m2.minimumRelativeValue = @-20.0; UIMotionEffectGroup* g = [UIMotionEffectGroup new]; g.motionEffects = @[m1,m2]; [self.alertview addMotionEffect:g]; - (void)didReceiveMemoryWarning [super didReceiveMemoryWarning]; // Dispose of any resources that can be recreated. - (void)show CGRect tempFrame = [UIScreen mainScreen].bounds; CGRect tempFrame2 = tempFrame; tempFrame2.size.height = tempFrame.size.width; tempFrame2.size.width = tempFrame.size.height; self.alertview.center = CGPointMake(CGRectGetMidX(tempFrame2), CGRectGetMidY(tempFrame2)); self.alertview.transform = CGAffineTransformMakeScale(1,1.6); self.alertview.alpha = 0; self.view.alpha = 0; [UIView animateWithDuration:0.1 animations:^ self.view.alpha = 1; completion: ^(BOOL finished) [UIView animateWithDuration:0.25 animations:^ self.alertview.alpha = 1; self.alertview.transform = CGAffineTransformIdentity; ]; ]; - (UIWindow *)windowWithLevel:(UIWindowLevel)windowLevel NSArray *windows = [[UIApplication sharedApplication] windows]; for (UIWindow *window in windows) if (window.windowLevel == windowLevel) return window; return nil; - (IBAction)doDismiss:(id)sender // [[SPRAudioHelper sharedHelper] playSoundFromTag:lightClick]; NSLog(@"check"); [UIView animateWithDuration:0.25 animations:^ self.alertview.transform = CGAffineTransformScale(self.alertview.transform, 1,0.5); self.alertview.alpha = 0; completion:^(BOOL finished) [UIView animateWithDuration:0.1 animations:^ self.view.alpha = 0; completion:^(BOOL finished) [alertWindow removeFromSuperview]; alertWindow = nil; if (sender == self.yesButton) [self.delegate alert:self didDismissWithButtonClick:1]; else [self.delegate alert:self didDismissWithButtonClick:0]; ]; ]; @end
这是 NSLog 结果：
2014-07-10 10:59:18.603 损坏报告计时器 [5166:60b] 窗口框架 0, 0, 568, 320 2014-07-10 10:59:18.720 损坏报告计时器 [5166:60b] 父框架 0, 0, 0, 0 2014-07-10 10:59:18.722 损坏报告计时器 [5166:60b] 视图框架 0, 0, 320, 568 2014-07-10 10:59:18.724 损坏报告计时器 [5166:60b] 警报框架 0,51, 568, 146.5 2014-07-10 10:59:18.726 损坏报告计时器 [5166:60b] 按钮框架 101, 91.5, 150, 50
【问题讨论】：
您是否尝试过修复它？我没有看到任何 AutoResizingMask，没有提到约束，甚至没有看到 didOrientationChange 的回调。 我已经做了很多切换框架的高度和宽度的工作。我不允许在这个应用程序中使用纵向模式，所以我认为我不需要任何方向更改的东西。 对于自动调整大小的蒙版，self.view 和 alertview 都设置为锁定与边缘的距离并调整大小。将 NSLog 结果放在上面 【参考方案1】：我在进行了越来越多的挖掘之后才弄清楚。我真的让整个事情变得比现在更复杂。需要修复 2 个函数，这里是更新的函数：
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self)
alertWindow = [self windowWithLevel:UIWindowLevelAlert];
if (!alertWindow)
alertWindow = [[UIWindow alloc] initWithFrame:[UIScreen mainScreen].bounds];
alertWindow.windowLevel = UIWindowLevelAlert;
[alertWindow makeKeyAndVisible];
alertWindow.rootViewController = self;
return self;
和
- (void)show
CGRect frame = self.view.bounds;
self.alertview.center = CGPointMake(CGRectGetMidX(frame), CGRectGetMidY(frame));
self.alertview.transform = CGAffineTransformMakeScale(1,1.6);
self.alertview.alpha = 0;
self.view.alpha = 0;
[UIView animateWithDuration:0.1 animations:^
self.view.alpha = 1;
completion:
^(BOOL finished)
[UIView animateWithDuration:0.25 animations:^
self.alertview.alpha = 1;
self.alertview.transform = CGAffineTransformIdentity;
];
];
最初，由于 show 将视图置于主屏幕边界的中心，因此将其放置在错误的位置，因为主屏幕边界不会在旋转时更新。然后我犯了调整窗口大小以适应这种情况的错误。这使得按钮不再出现在窗口中。
【讨论】：
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