SDimage

最新推荐文章于 2025-04-14 15:21:25 发布

原创最新推荐文章于 2025-04-14 15:21:25 发布 · 603 阅读

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本文深入探讨了iOS开发中的Swift编程语言，分享了实际项目中使用的高效编码实践和最佳编程习惯，帮助开发者提高开发效率并创建高质量的应用程序。

//
// MainViewController.m
// SDText
//
// Created by lanou on 15/10/14.
// Copyright (c) 2015年蓝鸥科技. All rights reserved.
//

#import "MainViewController.h"
#import "UIImageView+WebCache.h"

@interface MainViewController ()
@property (weak, nonatomic) IBOutlet UIImageView *imageView;
@property (weak, nonatomic) IBOutlet UIButton *downloadButton;
@property (weak, nonatomic) IBOutlet UIButton *clearButton;
@property (weak, nonatomic) IBOutlet UIButton *reloadButton;
@property (weak, nonatomic) IBOutlet UIView *testView;

@end

@implementation MainViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view.
    NSString *sandBoxPath = NSHomeDirectory();
    NSLog(@"\n%@",sandBoxPath);

}
- (IBAction)handleDownloadButtonAction:(UIButton *)sender {

    NSURL *imageURL = [NSURL URLWithString:IMAGE_URL];
    UIImage *placeholderImage = [UIImage imageNamed:@"image"];
    //1.通过URL设置图片

//    [self.imageView sd_setImageWithURL:imageURL];

    //2.图片设置完成后,执行Block函数中的的代码块
//    [self.imageView sd_setImageWithURL:imageURL completed:^(UIImage *image, NSError *error, SDImageCacheType cacheType, NSURL *imageURL) {
//        self.downloadButton.backgroundColor = [UIColor orangeColor];
//    }];


//    //3.图片加载完成之前设置一个默认显示图片
//    [self.imageView sd_setImageWithURL:imageURL placeholderImage:placeholderImage];

//    4.图片加载完成显示默认图,完成后执行执行Block函数中的的代码块
//    [self.imageView sd_setImageWithURL:imageURL placeholderImage:placeholderImage completed:^(UIImage *image, NSError *error, SDImageCacheType cacheType, NSURL *imageURL) {
//         self.downloadButton.backgroundColor = [UIColor orangeColor];
//        }];
    //5.设置图片的加载方式
//    [self.imageView sd_setImageWithURL:imageURL placeholderImage:placeholderImage options:SDWebImageProgressiveDownload];
    /*
     //失败后重试
     SDWebImageRetryFailed = 1 << 0,
     //UI交互期间开始下载，导致延迟下载比如UIScrollView减速。
     SDWebImageLowPriority = 1 << 1,
     //只进行内存缓存
     SDWebImageCacheMemoryOnly = 1 << 2,
     //这个标志可以渐进式下载,显示的图像是逐步在下载
     SDWebImageProgressiveDownload = 1 << 3,
     //刷新缓存
     SDWebImageRefreshCached = 1 << 4,
     //后台下载
     SDWebImageContinueInBackground = 1 << 5,
     //NSMutableURLRequest.HTTPShouldHandleCookies = YES;
     SDWebImageHandleCookies = 1 << 6,
     //允许使用无效的SSL证书
     //SDWebImageAllowInvalidSSLCertificates = 1 << 7,
     //优先下载
     SDWebImageHighPriority = 1 << 8,
     //延迟占位符
     SDWebImageDelayPlaceholder = 1 << 9,
     //改变动画形象
     SDWebImageTransformAnimatedImage = 1 << 10,
     */
}
- (IBAction)handleClearButtonAction:(UIButton *)sender {
    self.imageView.image = nil;
    SDImageCache *imageCache = [SDImageCache sharedImageCache];
    [imageCache clearMemory];
    [imageCache clearDisk];
}
- (IBAction)handleReloadButtonAction:(UIButton *)sender {
    self.imageView.image = [UIImage imageNamed:@"image"];
    [self handleDownloadButtonAction:self.downloadButton];
}

- (IBAction)handleExecuteButtonAction:(UIButton *)sender {
    SDWebImageManager *manager = [SDWebImageManager sharedManager];
    [manager downloadImageWithURL:[NSURL URLWithString:IMAGE_URL] options:SDWebImageRetryFailed progress:^(NSInteger receivedSize, NSInteger expectedSize) {

        [UIView animateWithDuration:1 animations:^{
            self.testView.frame = CGRectMake(7, 28, 359, 49);
        }];

    } completed:^(UIImage *image, NSError *error, SDImageCacheType cacheType, BOOL finished, NSURL *imageURL) {
        self.imageView.image = image;
    }];
}

- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

/*
#pragma mark - Navigation

// In a storyboard-based application, you will often want to do a little preparation before navigation
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
    // Get the new view controller using [segue destinationViewController].
    // Pass the selected object to the new view controller.
}
*/

@end