[IOS 开发] 使用UIVisualEffectView实现模糊效果

- (void)viewDidLoad {        [super viewDidLoad];        // Do any additional setup after loading the view, typically from a nib.        //使用图片初始化背景色    self.view.backgroundColor = [UIColor colorWithPatternImage:[UIImage imageNamed:@"gradient2"]];        //实现模糊效果    UIVisualEffectView *visualEffectView = [[UIVisualEffectView alloc] initWithEffect:[UIBlurEffect effectWithStyle:UIBlurEffectStyleLight]];        visualEffectView.frame = self.view.bounds;        visualEffectView.alpha = 1.0;        [self.view addSubview:visualEffectView];    }