我有一个scrollView和imageView。
该应用程序可在横向和纵向模式下使用。
而且我使用自动布局。
如果我为imageview使用常量。
我加载到imageviev中的图像会根据其大小自动扩展。
我现在所拥有的:
横向模式:
和人像模式:
我要像这些图片一样
横向模式:
和人像模式:
如何修复imageview中的自动调整大小?
附言iPad应用程式
谢谢大家的回答!
最佳答案
这是一个基于代码的自动布局示例,可以为您提供帮助
#import "UniversalViewController.h"
@interface UniversalViewController ()
@property (strong, nonatomic) UIImageView *myImageView;
@end
@implementation UniversalViewController
@synthesize myImageView;
- (void)viewDidLoad {
[super viewDidLoad];
self.view.backgroundColor = [UIColor blackColor];
UIImage *myImage = [UIImage imageNamed:@"Velvet_Underground_and_Nico.jpg"];
myImageView = [[UIImageView alloc] initWithImage:myImage];
[myImageView setTranslatesAutoresizingMaskIntoConstraints:NO];
[self.view addSubview:myImageView];
[self setWidth:300 andHeight:300 toView:myImageView];
[self centerView1:myImageView toView2:self.view];
}
- (void) willAnimateRotationToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation duration:(NSTimeInterval)duration {
[self.view removeConstraints:self.view.constraints];
[self centerView1:myImageView toView2:self.view];
if (toInterfaceOrientation == UIInterfaceOrientationLandscapeLeft || toInterfaceOrientation == UIInterfaceOrientationLandscapeRight) {
[self setWidth:450 andHeight:250 toView:myImageView];
} else {
[self setWidth:300 andHeight:300 toView:myImageView];
}
}
#pragma mark custom Autolayout methods
- (void) setWidth:(float)width andHeight:(float)height toView:(UIView *)view {
NSLayoutConstraint *myConstraint;
myConstraint = [NSLayoutConstraint constraintWithItem:view attribute:NSLayoutAttributeWidth relatedBy:NSLayoutRelationEqual toItem:nil attribute:NSLayoutAttributeNotAnAttribute multiplier:1.0 constant:width];
[self.view addConstraint:myConstraint];
myConstraint = [NSLayoutConstraint constraintWithItem:view attribute:NSLayoutAttributeHeight relatedBy:NSLayoutRelationEqual toItem:nil attribute:NSLayoutAttributeNotAnAttribute multiplier:1.0 constant:height];
[self.view addConstraint:myConstraint];
}
- (void) centerView1:(UIView *)view1 toView2:(UIView *)view2 {
NSLayoutConstraint *myConstraint;
myConstraint = [NSLayoutConstraint constraintWithItem:view1 attribute:NSLayoutAttributeCenterX relatedBy:NSLayoutRelationEqual toItem:view2 attribute:NSLayoutAttributeCenterX multiplier:1.0 constant:0.0];
[self.view addConstraint:myConstraint];
myConstraint = [NSLayoutConstraint constraintWithItem:view1 attribute:NSLayoutAttributeCenterY relatedBy:NSLayoutRelationEqual toItem:view2 attribute:NSLayoutAttributeCenterY multiplier:1.0 constant:0.0];
[self.view addConstraint:myConstraint];
}
您应该能够根据需要设置图像的大小...希望对您有所帮助...