#import "ViewController.h"
@interface ViewController ()
@property (nonatomic, strong) UIScrollView *scrollView;
@end
@implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
//添加SCrollView,把图片添加上去便于观察
self.scrollView = [[UIScrollView alloc] initWithFrame:self.view.bounds];
UIImageView *imageView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"qiaodan"]];
self.scrollView.contentSize = imageView.image.size;
self.scrollView.bounces = NO;//回弹效果
[self.scrollView addSubview:imageView];
[self.view addSubview:self.scrollView];
//设置模糊图层
UIVisualEffectView *effectView = [[UIVisualEffectView alloc] initWithEffect:[UIBlurEffect effectWithStyle:UIBlurEffectStyleLight]];
//设置模糊范围尺寸，自由设置 模糊的 范围
effectView.frame = CGRectMake(0, 100, 375, 300);
//添加到view
[self.view addSubview:effectView];
//可以在模糊图层上面添加内容：比如文字 等
//上面还可以添加模糊图层 子模糊图层
UILabel *label = [[UILabel alloc] initWithFrame:effectView.bounds];
label.text = @"乔丹";
label.textAlignment = NSTextAlignmentCenter;
label.font = [UIFont systemFontOfSize:50.f];
// [effectView.contentView addSubview:label];//1效果：添加到第一个模糊视图上面 ，字体部分会有 实体透明的效果
//设置子模糊视图
UIVisualEffectView *subEffectView = [[UIVisualEffectView alloc] initWithEffect:[UIVibrancyEffect effectForBlurEffect:(UIBlurEffect *)effectView.effect]];
subEffectView.frame = effectView.bounds;
[effectView.contentView addSubview:subEffectView];
[subEffectView.contentView addSubview:label];//2效果：这个字体 的部分会有 模糊的效果
// Do any additional setup after loading the view, typically from a nib.
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
@end