效果圖
代碼
// // ViewController.m // UImage+ImageEffects-Demo // // Created by 寒竹子 on 15/6/14. // Copyright (c) 2015年 寒竹子. All rights reserved. //
#import "ViewController.h" #import "GCD.h" #import "UIImage+ImageEffects.h"
@interface ViewController ()
@property (nonatomic, strong) UIImageView * imageView; @property (nonatomic) UIViewContentMode contentMode; // 圖片顯示的模式
@end
@implementation ViewController
- (instancetype)init { if (self = [super init]) { // Initial code }
return self; }
@synthesize contentMode = _contentMode;
#pragma mark - getter and setter
- (void)setContentMode:(UIViewContentMode)contentMode { _contentMode = contentMode; self.imageView.contentMode = contentMode; }
- (UIViewContentMode)contentMode { return _contentMode; }
- (void)viewDidLoad { [super viewDidLoad];
self.view.backgroundColor = [UIColor whiteColor];
self.imageView = [[UIImageView alloc] initWithFrame:CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height)]; self.imageView.alpha = .0f; self.imageView.center = self.view.center; self.contentMode = UIViewContentModeScaleAspectFill; [self.view addSubview:self.imageView];
// 異步下載圖片 [GCDQueue executeInGlobalQueue:^{ NSString * imageURL = @"/uploadfile/2014/1229/20141229033638152.jpg"; NSURLRequest * urlRequest = [NSURLRequest requestWithURL:[NSURL URLWithString:imageURL]]; // 下載圖片 NSData * imageData = [NSURLConnection sendSynchronousRequest:urlRequest returningResponse:nil error:nil]; UIImage * image = [UIImage imageWithData:imageData];
// 模糊圖片 并設置模糊程度 UIImage * blurImage = [image blurImageWithRadius:10.0f];
// 主線程 更新UI [GCDQueue executeInMainQueue:^{ self.imageView.image = blurImage; [UIView animateWithDuration:1.0f animations:^{ self.imageView.alpha = 1.0f; } completion:nil]; }]; }]; }
@end
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