SDCycleScrollView Documentation

SDWebImage is an asynchronous image downloader with built-in support for:

• UI Categories: Extensions for UIImageView, UIButton, and MKAnnotationView for easy web image and cache management.
• Caching: Asynchronous memory and disk caching with automatic expiration handling.
• Performance: Background image decompression and non-blocking main thread execution.
• Transformations: Customizable and composable transformations applied immediately after download.
• Loading Indicators: Built-in support for loading indicators.
• Reliability: Guarantees that the same URL won't be downloaded multiple times and prevents retrying bogus URLs.

To integrate SDCycleScrollView into your iOS project, add the following line to your Podfile and run pod install:

pod 'SDCycleScrollView','>= 1.82'

You can install SDWebImage using CocoaPods by adding it to your Podfile.

For standard installation:

platform :ios, '7.0'
pod 'SDWebImage', '~> 4.0'

Swift and Static Frameworks

If you are using a Swift project and want to use SDWebImage as a static framework (avoiding use_frameworks!), use modular headers with CocoaPods 1.5.0+ and Xcode 9+:

platform :ios, '8.0'
# use_modular_headers!
pod 'SDWebImage', :modular_headers => true

Alternatively, to use it as a dynamic framework, include use_frameworks!:

platform :ios, '8.0'
use_frameworks!
pod 'SDWebImage'

To install SDWebImage with Carthage (iOS 8+), add the following entry to your Cartfile:

github "SDWebImage/SDWebImage"

Then run the command: carthage update

Note: Carthage builds all components (including SDWebImageMapKit). If you do not need specific components, you can manually delete the unused frameworks from the Carthage Build directory after the update completes.

SDWebImage provides subspecs to allow for smaller installations. By default, you get the Core module. If you require MapKit support, you must specify the subspec in your Podfile.

pod 'SDWebImage/MapKit'

If you encounter an unexpected blank area at the top of the scroll view, it is likely due to iOS 7+ automatic scroll view insets adjustment.

Solution: Set self.automaticallyAdjustsScrollViewInsets = NO; in your ViewController.

Import the header and use the sd_setImageWithURL:placeholderImage: category method on UIImageView to asynchronously download and cache an image.

```objective-c
#import <SDWebImage/SDWebImage.h>
...
[imageView sd_setImageWithURL:[NSURL URLWithString:@

Import SDWebImage and use the sd_setImage(with:placeholderImage:) method on your UIImageView instance.

import SDWebImage

imageView.sd_setImage(with: URL(string: "http://www.domain.com/path/to/image.jpg"), placeholderImage: UIImage(named: "placeholder.png"))

You can initialize the scroll view for either network-loaded images or local images using the provided factory methods.

For network-loaded images: Use cycleScrollViewWithFrame:delegate:placeholderImage: and assign your URL strings to the imageURLStringsGroup property.

For local images: Use cycleScrollViewWithFrame:imagesGroup: and pass your local image array.

// 网络加载图片的轮播器
SDCycleScrollView *cycleScrollView = [cycleScrollViewWithFrame:frame delegate:delegate placeholderImage:placeholderImage];
cycleScrollView.imageURLStringsGroup = imagesURLStrings;

// 本地加载图片的轮播器
SDCycleScrollView *cycleScrollView = [SDCycleScrollView cycleScrollViewWithFrame: imagesGroup:图片数组];

To use the library in your Objective-C source files, import the umbrella header file:

#import <SDWebImage/SDWebImage.h>