您好我是iOS的新手，我在主UIviews上以编程方式创建了两个ViewController，我在UIviews添加了两个按钮Next Back按钮
当我点击Next按钮时，我先将UIview移动到第二个UIview（就像我们将一个视图控制器移动到另一个视图控制器一样）。当我点击Back按钮时，我正在使用UIview动画将第二个UIview推回到第一个UIview
我的主要问题是：当我在纵向模式下更改第一个UIview方向时，第二个UIview在我的第一个UIview上重叠。这是我的主要问题，我不明白为什么会出现这个问题/请帮助我。
#import "ViewController.h"
@interface ViewController (){
UIView * MyFisrtView;
UIView * MySecondView;
UIButton * GoNext;
UIButton * GoBack;
}
@end
@implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
MyFisrtView = [[UIView alloc] init];
MyFisrtView.backgroundColor = [UIColor orangeColor];
MyFisrtView.translatesAutoresizingMaskIntoConstraints = NO;
[self.view addSubview:MyFisrtView];
MySecondView = [[UIView alloc] init];
MySecondView.backgroundColor = [UIColor lightGrayColor];
MySecondView.translatesAutoresizingMaskIntoConstraints = NO;
[self.view addSubview:MySecondView];
NSDictionary * HeaderDictionary = NSDictionaryOfVariableBindings(MyFisrtView,MySecondView);
//Appliying Autolayouts for FirstView
[self.view addConstraints:[NSLayoutConstraint constraintsWithVisualFormat:[NSString stringWithFormat:@"H:|-0-[MyFisrtView]-0-|"]
options:0
metrics:nil
views:HeaderDictionary]];
[self.view addConstraints:[NSLayoutConstraint constraintsWithVisualFormat:[NSString stringWithFormat:@"V:|-0-[MyFisrtView]-0-|"]
options:0
metrics:nil
views:HeaderDictionary]];
//Appliying Autolayouts for SecondView
[self.view addConstraints:[NSLayoutConstraint constraintsWithVisualFormat:[NSString stringWithFormat:@"H:|-0-[MySecondView]-0-|"]
options:0
metrics:nil
views:HeaderDictionary]];
[self.view addConstraints:[NSLayoutConstraint constraintsWithVisualFormat:[NSString stringWithFormat:@"V:|-0-[MySecondView]-0-|"]
options:0
metrics:nil
views:HeaderDictionary]];
GoNext = [UIButton buttonWithType: UIButtonTypeRoundedRect];
GoNext.frame = CGRectMake(50, 50, 100, 18);
[GoNext setTitle:@"Next" forState:UIControlStateNormal];
[GoNext addTarget:self action:@selector(GoNext:) forControlEvents:UIControlEventTouchUpInside];
GoNext.backgroundColor = [UIColor lightGrayColor];
[MyFisrtView addSubview:GoNext];
GoBack = [UIButton buttonWithType: UIButtonTypeRoundedRect];
GoBack.frame = CGRectMake(50, 50, 100, 18);
[GoBack setTitle:@"Back" forState:UIControlStateNormal];
[GoBack addTarget:self action:@selector(GoBack:) forControlEvents:UIControlEventTouchUpInside];
GoBack.backgroundColor = [UIColor orangeColor];
[MySecondView addSubview:GoBack];
MyFisrtView.hidden = NO;
MySecondView.hidden = YES;
}
-(void)GoNext:(id)sender{
MySecondView.hidden = NO;
MySecondView.frame=CGRectMake(248, 0, self.view.frame.size.width, self.view.frame.size.height); // starting visible position
[UIView animateWithDuration:0.5f
delay:0.0f
options:UIViewAnimationOptionBeginFromCurrentState
animations:^{
[MySecondView setFrame:CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height)]; // final visible position
}
completion:nil];
}
-(void)GoBack:(id)sender{
MySecondView.frame=CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height); // starting visible position
[UIView animateWithDuration:0.5f
delay:0.0f
options:UIViewAnimationOptionBeginFromCurrentState
animations:^{
[MySecondView setFrame:CGRectMake(MyFisrtView.frame.size.width, 0, self.view.frame.size.width, self.view.frame.size.height)]; // final visible position
}
completion:nil];
}
@end
答案 0 :(得分：1)
这是因为screen size的{{1}}更改。例如，在landscape to portrait模式下，与portrait模式进行比较时，高度会很大，宽度会很小。
因此，您需要做的是，您必须为landscape和portrait修复单独的高度和宽度，并为不同的方向更改landscape和x位置
而且，从您的代码中我没有看到任何更改y。如果您想解决问题，则必须实施orientation delegates。
答案 1 :(得分：1)
首先注释掉你的约束并进行如下修改
@interface ViewController (){
UIView * MyFisrtView;
UIView * MySecondView;
UIButton * GoNext;
UIButton * GoBack;
BOOL isSecondShown;
}
@end
@implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
MyFisrtView = [[UIView alloc] initWithFrame:self.view.frame];
MyFisrtView.backgroundColor = [UIColor orangeColor];
MyFisrtView.translatesAutoresizingMaskIntoConstraints = NO;
[self.view addSubview:MyFisrtView];
MySecondView = [[UIView alloc] initWithFrame:CGRectMake(self.view.frame.origin.x + self.view.frame.size.width, self.view.frame.origin.y, self.view.frame.size.width, self.view.frame.size.height)];
MySecondView.backgroundColor = [UIColor lightGrayColor];
MySecondView.translatesAutoresizingMaskIntoConstraints = NO;
[self.view addSubview:MySecondView];
GoNext = [UIButton buttonWithType: UIButtonTypeRoundedRect];
GoNext.frame = CGRectMake(50, 50, 100, 18);
[GoNext setTitle:@"Next" forState:UIControlStateNormal];
[GoNext addTarget:self action:@selector(GoNext:) forControlEvents:UIControlEventTouchUpInside];
GoNext.backgroundColor = [UIColor lightGrayColor];
[MyFisrtView addSubview:GoNext];
GoBack = [UIButton buttonWithType: UIButtonTypeRoundedRect];
GoBack.frame = CGRectMake(50, 50, 100, 18);
[GoBack setTitle:@"Back" forState:UIControlStateNormal];
[GoBack addTarget:self action:@selector(GoBack:) forControlEvents:UIControlEventTouchUpInside];
GoBack.backgroundColor = [UIColor orangeColor];
[MySecondView addSubview:GoBack];
// MyFisrtView.hidden = NO;
// MySecondView.hidden = YES;
}
-(void)viewWillLayoutSubviews{
[super viewWillLayoutSubviews];
if(isSecondShown){
[MyFisrtView setFrame:CGRectMake(MySecondView.frame.origin.x - MySecondView.frame.size.width, MySecondView.frame.origin.y, MySecondView.frame.size.width, MySecondView.frame.size.height)];
[MySecondView setFrame:self.view.frame];
}
else{
[MyFisrtView setFrame:self.view.frame];
[MySecondView setFrame:CGRectMake(self.view.frame.origin.x + self.view.frame.size.width, self.view.frame.origin.y, self.view.frame.size.width, self.view.frame.size.height)];
}
}
-(void)GoNext:(id)sender{
// MySecondView.hidden = NO;
MySecondView.frame=CGRectMake(248, 0, self.view.frame.size.width, self.view.frame.size.height); // starting visible position
[UIView animateWithDuration:0.5f
delay:0.0f
options:UIViewAnimationOptionBeginFromCurrentState
animations:^{
[MySecondView setFrame:CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height)]; // final visible position
}
completion:^(BOOL finished){
isSecondShown = YES;
}];
}
-(void)GoBack:(id)sender{
// MySecondView.frame=CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height); // starting visible position
[MyFisrtView setFrame:CGRectMake(MySecondView.frame.origin.x - MySecondView.frame.size.width, MySecondView.frame.origin.y, MySecondView.frame.size.width, MySecondView.frame.size.height)];
[UIView animateWithDuration:0.5f
delay:0.0f
options:UIViewAnimationOptionBeginFromCurrentState
animations:^{
[MySecondView setFrame:CGRectMake(self.view.frame.size.width, 0, self.view.frame.size.width, self.view.frame.size.height)]; // final visible position
[UIView animateWithDuration:0.5f animations:^{
[MyFisrtView setFrame:self.view.frame];
}];
}
completion:^(BOOL finished){
isSecondShown = NO;
}];
}
@end