常用三方，Reachability 检测网络连接

常用三方

Reachability 检 测网络连接

用来检查网络连接是否可用:包括WIFI和 WWAN(3G/EDGE/CDMA等)两种工作模式。

可以从Apple网站下载到: http://developer.apple.com/library/ios/#samplecode/Reachab ility/History/History.html#//apple_ref/doc/uid/DTS40007324-R evisionHistory-DontLinkElementID_1。

现在有更好的替代品: https://github.com/tonymillion/Reachability,比Apple??供的兼 容性更好,而且更加好用,更具体的使用方法请看它??供的例 子。

Reachability* reach = [Reachability reachabilityWithHostname:@"www.google.com"]; reach.reachableBlock = ^(Reachability*reach)

{ NSLog(@"网络可 用!");};reach.unreachableBlock =

^(Reachability*reach) { NSLog(@"网络不可 用!");};// 开始监听[reach startNotifier];

ASIHTTPReque st 网络请求

ASIHTTPRequest是对CFNetwork API的一个包装,它??供了 一套更加简洁的API,使用起来也更加简单。

官方网站:http://allseeing-i.com/ASIHTTPRequest/ GitHub:https://github.com/pokeb/asi-http-request

它不仅仅支持基本的HTTP请求,而且支持基于REST的服务 (GET/POST/PUT/DELETE)。

最让人喜欢的是,它支持block语法:

NSURL *url = [NSURL URLWithString:@"http://allseeing-i.com"]; __block ASIHTTPRequest *request = [ASIHTTPRequest requestWithURL:url];
[request setCompletionBlock:^{ // Use when fetching text data NSString *responseString = [request responseString]; // Use when fetching binary data NSData

*responseData = [request responseData]; }]; [request setFailedBlock:^{ NSError *error = [request error]; }]; [request startAsynchronous];

它的ASIFormDataRequest子类可以横容易的??交表单数据和 文件:

ASIFormDataRequest *request = [ASIFormDataRequest requestWithURL:url];[request setPostValue:@"Ben" forKey:@"first_name"];[request setPostValue:@"Copsey" forKey:@"last_name"];// Upload a file on disk[request setFile:@"/Users/ben/Desktop/ben.jpg" withFileName:@"myphoto.jpg" andContentType:@"image/jpeg"forKey:@"photo"]; // Upload an NSData instance[request setData:imageData withFileName:@"myphoto.jpg" andContentType:@"image/jpeg" forKey:@"photo"];

详细的使用方法请下载相应的源代码及例子,或者从官方的使 用说明http://allseeing-i.com/ASIHTTPRequest/How-to-use开 始。

MBProgressHU D ??示效果

支持各种状态加载的??示效果,以及带进度的??示效果。 GitHub:https://github.com/matej/MBProgressHUD

一般会在.m文件实现MBProgressHUDDelegate协议,并声明 HUD变量:

@interface SampleViewController ()<MBProgressHUDDelegate>{ MBProgressHUD *HUD;}#pragma mark -#pragma mark MBProgressHUDDelegate methods- (void)hudWasHidden:(MBProgressHUD *)hud { // Remove HUD from screen when the HUD was hidded [HUD removeFromSuperview]; HUD = nil;}

在执行某个异步请求时开始调用:

HUD = [MBProgressHUD showHUDAddedTo:self.webView animated:YES];

HUD.labelText = @"正在请求..."; // mode参数可 以控制显示的模式 //HUD.mode =

MBProgressHUDModeText; HUD.delegate = self;

请求完成时隐藏??示效果:

[HUD hide:YES];

对于同步方法一般都是用showWhileExecuting方法,方法执行 完成之后会自动隐藏??示效果:

[HUD showWhileExecuting:@selector(myTask) onTarget:self withObject:nil animated:YES];

SVProgressHU D ??示效果

GitHub:https://github.com/samvermette/SVProgressHUD SVProgressHUD和MBProgressHUD效果差不多,不过不需要

使用协议,同时也不需要声明实例。 直接通过类方法进行调用即可:

[SVProgressHUD method]

可以使用以下方法来显示状态:

+ (void)show;+ (void)showWithMaskType:(SVProgressHUDMaskTyp e)maskType;+ (void)showWithStatus:(NSString*)string;+

(void)showWithStatus:(NSString*)string maskType:(SVProgressHUDMaskType)maskType;

如果需要明确的进度,则使用以下方法:

+ (void)showProgress:(CGFloat)progress;+ (void)showProgress:(CGFloat)progress status:(NSString*)status;+ (void)showProgress:(CGFloat)progress status:(NSString*)status maskType:(SVProgressHUDMaskType)maskType;

通过dismiss方法来隐藏??示: + (void)dismiss;

另外??供了以下方法用于显示状态,并在1秒后自动隐藏??示 (使用的图标来源于Glyphish:http://www.glyphish.com/):

+ (void)showSuccessWithStatus:(NSString*)strin g;+ (void)showErrorWithStatus:(NSString *)string;+ (void)showImage:(UIImage*)image status:(NSString*)string; // use 28x28 white pngs

ZAActivityBar

??示效果

GitHub:https://github.com/zacaltman/ZAActivityBar ZAActivityBar和SVProgressHUD非常相似,它??供了更加简

洁的API来显示??示效果。

ZAActivityBar使用的动画效果来源于 ZKBounceAnimation(https://github.com/khanlou/SKBounceA nimation),成功、失败的状态图标来源于 Pictos(http://pictos.cc/)。

显示加载状态:
[ZAActivityBar showWithStatus:@"加载中..."]; 显示成功、失败状态:

[ZAActivityBar showSuccessWithStatus:@"成 功!"];[ZAActivityBar showErrorWithStatus:@"失 败!"];

隐藏??示:

[ZAActivityBar dismiss];

SBJson JSON

解析

官方: http://sbjson.org/ GitHub:https://github.com/stig/json-framework

API使用起来稍显繁琐,特别是初始化的时候:

@interface TestViewController ()<SBJsonStreamParserAdapterDelegate> { SBJsonStreamParser *parser;

SBJsonStreamParserAdapter *adapter;}// 冗长的初

始化方法足以吓到一大片人- (void)initSBJSON{ // We don‘t want *all* the individual messages from the // SBJsonStreamParser, just the top-level objects. The stream // parser adapter exists for this purpose. adapter = [[SBJsonStreamParserAdapter alloc] init];

// Set ourselves as the delegate, so we receive the messages // from the adapter. adapter.delegate = self; // Create a new stream parser.. parser = [[SBJsonStreamParser alloc] init];

// .. and set our adapter as its delegate. parser.delegate = adapter; // Normally it‘s an error if JSON is followed by anything but // whitespace. Setting this means that the parser will be // expecting the stream to contain multiple whitespace-separated // JSON documents. parser.supportMultipleDocuments = YES;}#pragma mark SBJsonStreamParserAdapterDelegate methods- (void)parser:(SBJsonStreamParser *)parser foundArray:(NSArray *)array

{ [NSException raise:@"unexpected" format:@"Should not get here"];}- (void)parser:(SBJsonStreamParser *)parser foundObject:(NSDictionary *)dict

{ NSLog(@"SBJson parser foundObject"); // 处理返回的数据}// 使用ASIHTTPRequest请求测试-

(void) loadData { __block ASIHTTPRequest *request = [ASIHTTPRequest requestWithURL:url]; [request setRequestMethod:@"POST"];
[request setCompletionBlock:^{ // Use when fetching text data //NSString *responseString = [request responseString];

// Use when fetching binary data NSData *responseData = [request responseData]; NSLog(@"Connection didReceiveData of
length: %u", responseData.length);

// Parse the new chunk of data. The parser will append it to // its internal buffer, then parse from where it left off in // the last chunk. SBJsonStreamParserStatus status = [parser parse:responseData]; if (status == SBJsonStreamParserError)

{ NSLog(@"Parser error: %@", parser.error); } else if (status == SBJsonStreamParserWaitingForData)
{ NSLog(@"Parser waiting for more data"); } }]; [request setFailedBlock:^{ NSError *error = [request error]; NSLog(@"failed - %@ %@", [error localizedDescription], error); }]; [request startAsynchronous];}

JSONKit JSON

解析 GitHub:https://github.com/johnezang/JSONKit

??供比SBJson更优异的性能以及更加简便的使用方法,但是中 文最好使用utf-8格式(/uXXXX),否则容易造成乱码。

API调用起来非常简单,省去了SBJson那么一大堆的方法:

JSONDecoder* decoder = [[JSONDecoder alloc] initWithParseOptions:JKParseOptionNone];id result = [decoder objectWithData:jsonData];

详细的使用方法请看它的GitHub主页。

SDWebImage

图片异步加载及 缓存

SDWebImage用于异步下载网络上的图片,并支持对图片的缓 存等。

多数情况下是使用UIImageView+WebCache为UIImageView 异步加载图片:

#import <SDWebImage/UIImageView+WebCache.h>// ...[ce ll.imageView setImageWithURL:[NSURL URLWithString:@"http://www.domain.com/path/t o/image.jpg"]
placeholderImage:[UIImage imageNamed:@"placeholder.png"]];

需要注意的是,pladeholderImage的大小一定要大于 UIImageView的大小,否则可能不显示placeholderImage图片。

它还支持block语法用于在加载完成时做一些操作:

[cell.imageView setImageWithURL:[NSURL URLWithString:@"http://www.domain.com/path/t

o/image.jpg"]
placeholderImage:[UIImage imageNamed:@"placeholder.png"] completed:^(UIImage *image, NSError *error, SDImageCacheType cacheType) {... completion code here ...}];

SDWebImage并不局限于UIImageView上,使用 SDWebImageManager完成更多的操作:

SDWebImageManager *manager = [SDWebImageManager sharedManager];[manager downloadWithURL:imageURL
options:0 progress:^(NSUInteger receivedSize, long long expectedSize)

{ // 下载进度 } completed:^(UIImage *image, NSError *error, SDImageCacheType cacheType)
{ if (image)

{ // 下载完
成 } }];

或者使用Image Downloader也是一样的效果:

[SDWebImageDownloader.sharedDownloader downloadImageWithURL:imageURL options:0 progress:^(NSUInteger receivedSize, long long

expectedSize) { // 进度 } completed:^(UIImage *image, NSData *data, NSError *error, BOOL finished)
{ if (image && finished)

{ // 下载完成 } }];

UIActivityIndica tor-for-SDWebI

mage 为 SDWebImage显

示加载效果

GitHub: https://github.com/JJSaccolo/UIActivityIndicator-for-SDWebI mage

用于为SDWebImage在UIImageView加载图片时,显示加载效 果(UIActivityIndicatorView实现),它??供以下方法:

- (void)setImageWithURL:(NSURL *)url usingActivityIndicatorStyle:(UIActivityIndic atorViewStyle)activityStyle;- (void)setImageWithURL:(NSURL *)url placeholderImage:(UIImage *)placeholder usingActivityIndicatorStyle:(UIActivityIndic atorViewStyle)activityStyle;-

(void)setImageWithURL:(NSURL *)url placeholderImage:(UIImage *)placeholder options:(SDWebImageOptions)options usingActivityIndicatorStyle:(UIActivityIndic atorViewStyle)activityStyle;- (void)setImageWithURL:(NSURL *)url completed:(SDWebImageCompletedBlock)complete dBlock usingActivityIndicatorStyle:(UIActivityIndic atorViewStyle)activityStyle;- (void)setImageWithURL:(NSURL *)url placeholderImage:(UIImage *)placeholder completed:(SDWebImageCompletedBlock)complete dBlock usingActivityIndicatorStyle:(UIActivityIndic atorViewStyle)activityStyle;- (void)setImageWithURL:(NSURL *)url placeholderImage:(UIImage *)placeholder options:(SDWebImageOptions)options completed:(SDWebImageCompletedBlock)complete dBlock usingActivityIndicatorStyle:(UIActivityIndic atorViewStyle)activityStyle;- (void)setImageWithURL:(NSURL *)url placeholderImage:(UIImage *)placeholder options:(SDWebImageOptions)options progress:(SDWebImageDownloaderProgressBlock) progressBlock completed:(SDWebImageCompletedBlock)complete dBlock usingActivityIndicatorStyle:(UIActivityIndic atorViewStyle)activityStyle;

UIImage+Resize

调整图片大小

GitHub:https://github.com/coryalder/UIImage_Resize ??供多种方法为图片设置透明度、圆角、裁剪、调整大小等:

- (UIImage *)imageWithAlpha;- (UIImage *)transparentBorderImage:(NSUInteger)borderS ize;- (UIImage *)roundedCornerImage:(NSInteger)cornerSize borderSize:(NSInteger)borderSize;- (UIImage *)croppedImage:(CGRect)bounds;- (UIImage *)thumbnailImage:(NSInteger)thumbnailSize transparentBorder:(NSUInteger)borderSize cornerRadius:(NSUInteger)cornerRadius interpolationQuality:(CGInterpolationQuality )quality;- (UIImage *)resizedImage:(CGSize)newSize interpolationQuality:(CGInterpolationQuality )quality;- (UIImage *) resizedImageWithContentMode:(UIViewContentMo de)contentMode
bounds:(CGSize)bounds interpolationQuality:(CGInterpolationQuality )quality;

更详细使用见:

http://vocaro.com/trevor/blog/2009/10/12/resize-a-uiimage-th e-right-way/

ImageCacheRe size 异步加载

图片、缓存及调 整大小

GitHub:https://github.com/toptierlabs/ImageCacheResize

整合了SDWebImage和UIImage+Resize的功能,用于图片的 异步加载、缓存、以及下载完成后调整大小并显示在 UIImageView上。

??供了以下API用于加载图片以及加载完成后调整图片大小:

- (void)setImageWithURL:(NSURL *)url andCropToBounds:(CGRect)bounds;- (void)setImageWithURL:(NSURL *)url

andResize:(CGSize)size withContentMode:(UIViewContentMode)mode;- (void)setImageWithURL:(NSURL *)url placeholderImage:(UIImage *)placeholder andCropToBounds:(CGRect)bounds;- (void)setImageWithURL:(NSURL *)url placeholderImage:(UIImage *)placeholder options:(SDWebImageOptions)options andResize:(CGSize)size;- (void)setImageWithURL:(NSURL *)url placeholderImage:(UIImage *)placeholder options:(SDWebImageOptions)options andResize:(CGSize)size withContentMode:(UIViewContentMode)mode;- (void)setImageWithURL:(NSURL *)url placeholderImage:(UIImage *)placeholder options:(SDWebImageOptions)options andCropToBounds:(CGRect)bounds;

使用方法和SDWebImage一样简单,如以下官方例子:

[imageview setImageWithURL:[NSURL URLWithString:@"http://t0.gstatic.com/images ?q=tbn:ANd9GcQfraHpiabjEY8iDdBe9OUQYHMtwfuAv 9ZRR0RYKuoVF_EpE8Fp5A"] andResize:CGSizeMake(30, 30) withContentMode:UIViewContentModeScaleAspect

Fit]; // 按比例缩放[imageview setImageWithURL:[NSURL URLWithString:@"http://t0.gstatic.com/images ?q=tbn:ANd9GcQfraHpiabjEY8iDdBe9OUQYHMtwfuAv 9ZRR0RYKuoVF_EpE8Fp5A"] andCropToBounds:CGRectMake(0, 0, 100, 100)]; //

裁剪成100x100大小

EGOTableView PullRefresh 下

拉刷新 GitHub:

https://github.com/enormego/EGOTableViewPullRefresh 这是最早出现的为UITableView??供下拉刷新功能的类库,使

用起来稍显麻烦,需要实现诸多协议(代码取自官方DEMO):

#import "EGORefreshTableHeaderView.h"@interface RootViewController : UITableViewController <EGORefreshTableHeaderDelegate, UITableViewDelegate,
UITableViewDataSource>{ EGORefreshTableH

eaderView*_refreshHeaderView; // 是否正在加载

中 BOOL _reloading;}- (void)viewDidLoad
{ [super viewDidLoad]; if (_refreshHeaderView == nil)
{ EGORefreshTableHeaderView *view = [[EGORefreshTableHeaderView alloc] initWithFrame:CGRectMake(0.0f, 0.0f - self.tableView.bounds.size.height, self.view.frame.size.width,

self.tableView.bounds.size.height)]; view.delegate = self; [self.tableView addSubview:view];
_refreshHeaderView = view;

release]; } // 更新最后加载时间 [_refreshHeaderView refreshLastUpdatedDate];}#pragma mark -#pragma mark Data Source Loading / Reloading Methods-

(void)reloadTableViewDataSource{ // 在这 里加入代码用于获取数据 _reloading = YES;}- (void)doneLoadingTableViewData{ // 数据加

载完成时调用这个方法 _reloading = NO; [_refreshHeaderView egoRefreshScrollViewDataSourceDidFinishedLoa ding:self.tableView];}#pragma mark -#pragma mark UIScrollViewDelegate Methods- (void)scrollViewDidScroll:(UIScrollView *)scrollView{ [_refreshHeaderView egoRefreshScrollViewDidScroll:scrollView];}- (void)scrollViewDidEndDragging:(UIScrollView *)scrollView
willDecelerate:(BOOL)decelerate{ [_refres hHeaderView egoRefreshScrollViewDidEndDragging:scrollVie w];}#pragma mark -#pragma mark EGORefreshTableHeaderDelegate Methods- (void)egoRefreshTableHeaderDidTriggerRefresh :(EGORefreshTableHeaderView*)view{ [self reloadTableViewDataSource]; [self performSelector:@selector(doneLoadingTableVi ewData) withObject:nil afterDelay:3.0];}- (BOOL)egoRefreshTableHeaderDataSourceIsLoadi ng:(EGORefreshTableHeaderView*)view{ retur n _reloading; // should return if data source model is reloading}-

[view

(NSDate*)egoRefreshTableHeaderDataSourceLast Updated:(EGORefreshTableHeaderView*)view{ r eturn [NSDate date]; // should return date data source was last changed}

PullToRefresh

下拉刷新 GitHub:https://github.com/leah/PullToRefresh

PullToRefresh??供比EGOTableViewPullRefresh更加简单的 使用方法,只要继承自PullRefreshTableViewController,再实 现refresh方法即可:

- (void)refresh { // 加载数据 [self.tableView reloadData]; // 重新载入 UITableView [self stopLoading]; //停止动画}

STableViewCon troller 下拉刷

新、上拉加载更 多

GitHub:https://github.com/shiki/STableViewController

STableViewController比PullToRefresh多了一个上拉加载更 多功能,使用上也差不多简单,需要继承自 STableViewController,再实现一些方法:

- (void) viewDidLoad{ [super viewDidLoad]; self.title = @"STableViewController Demo"; [self.tableView setBackgroundColor:[UIColor

lightGrayColor]]; // 需要创建两个自定义视图用于

显示"下拉刷新"、"上拉加载更多" self.headerView = headerView; self.footerView =
footerView; }#pragma mark - Pull to Refresh- (void) pinHeaderView{ [super pinHeaderView];

// 下拉刷新视图显示一些加载动画}- (void) unpinHeaderView{ [super unpinHeaderView]; // 下拉刷新视图停止动画}- (void)

headerViewDidScroll:(BOOL)willRefreshOnRelea se scrollView:(UIScrollView *)scrollView{ //

下拉刷新视图显示状态信息 if (willRefreshOnRelease) //hv.title.text = @" 松开后刷新..."; else //hv.title.text = @"下拉 刷新...";}- (BOOL) refresh{ if (![super refresh]) return NO; // 下拉刷新加载数据

[self performSelector:@selector(addItemsOnTop) withObject:nil afterDelay:2.0]; return YES;}#pragma mark - Load More- (void)

willBeginLoadingMore{ // 上拉加载更多视图加载动 画}- (void) loadMoreCompleted{ [super loadMoreCompleted]; // 上拉加载更多视图停止动画 if (!self.canLoadMore) { //没有更多数据的时候 执行代码... }}- (BOOL) loadMore{ if (![super

loadMore]) return NO; // 上拉加载更多数据 [self performSelector:@selector(addItemsOnBottom) withObject:nil afterDelay:2.0]; return

YES;}// - (void) addItemsOnTop{ // 加载数据... [self.tableView reloadData]; // 数据加载完成 通知上拉视图 [self refreshCompleted];}- (void) addItemsOnBottom{ // 加载更多数据... [self.tableView reloadData]; // 通过判断设置 是否可以加载更多 //self.canLoadMore = NO; //

数据加载完成通知下拉视图 [self loadMoreCompleted];}

SVPullToRefres h 下拉刷新、上

拉加载更多 GitHub:https://github.com/samvermette/SVPullToRefresh

包含SVPullToRefresh + SVInfiniteScrolling为UITableView?? 供下拉刷新、上拉加载更多功能。

使用起来也相当简单,只要在UITableViewController里实现以 下方法:

- (void)viewDidLoad { [super viewDidLoad]; __weak SVViewController *weakSelf = self;

// 设置下拉刷新 [self.tableView addPullToRefreshWithActionHandler:^{ eakSelf insertRowAtTop]; }]; 置上拉加载更多 [self.tableView

addInfiniteScrollingWithActionHandler:^{ [weakSelf insertRowAtBottom]; }];}-

(void)viewDidAppear:(BOOL)animated
{ [tableView triggerPullToRefresh];}-

(void)insertRowAtTop { // 获取数据....

// 停止动画 [self.tableView.pullToRefreshView

[w // 设

stopAnimating];}- (void)insertRowAtBottom { // 获取数据.... // 停止动画

[weakSelf.tableView.infiniteScrollingView stopAnimating];}

CMPopTipView

??示信息 GitHub:https://github.com/chrismiles/CMPopTipView

CMPopTipView用于在一些视图上显示??示信息:

self.tipView = [[CMPopTipView alloc] initWithMessage:@"??示消息

"];self.tipView.delegate = self;[self.tipView presentPointingAtView:anyButton

inView:self.view animated:YES]; // 点击按钮显示 [self.tipView presentPointingAtBarButtonItem:barButtonItem

animated:YES]; // 点击导航栏按钮显示 #pragma mark CMPopTipViewDelegate methods- (void)popTipViewWasDismissedByUser:(CMPopTip

View *)popTipView { // 清理资源 self.tipView = nil;}

PrettyKit

GitHub:https://github.com/vicpenap/PrettyKit 定制了一些UI组件如UITableViewCell、UINavigationBar、

UITabBar、UIToolBar等,比系统自带的更加美观。

MGBox2

GitHub:https://github.com/sobri909/MGBox2

??供一些定制的UI组件可以更简单快速的创建表格、网格布局, 以及丰富的文本呈现,基于block的事件机制等,包含:MGBox、 M G T a b l e B o x 、M G T a b l e B o x S t y l e d 、M G S c r o l l V i e w 、M G B u t t o n 、 MGEvents、MGEasyFrame、MGLine等,其中MGBox还支持 screenshot方法用于截图。

Nimbus

GitHub:https://github.com/jverkoey/nimbus

著名的框架,??供了一套非常丰富的UI组件,可以使开发变得 更加简单、有效率。

FlatUIKit

GitHub:https://github.com/Grouper/FlatUIKit 扁平化设计的UI组件,类似于WP或者iOS7的风格。

MUKMediaGalle ry

GitHub:https://github.com/muccy/MUKMediaGallery 媒体库效果,支持图片、视频及音频。

PTShowcaseVie wController

GitHub: https://github.com/exalted/PTShowcaseViewController

同样是一个媒体库效果,支持的格式更多,包括:图片、视频、 PDF等.

MWPhotoBrows er

GitHub:https://github.com/mwaterfall/MWPhotoBrowser 图片展示效果,支持本地及远程的图片,使用也比较简单,只

要实现MWPhotoBrowserDelegate协议:

@interface TestViewController ()<MWPhotoBrowserDelegate>{ NSArray *_photos;}-(void) doAction
{ NSMutableArray *photos =

[[NSMutableArray alloc] init]; for (...) { MWPhoto* photo = [MWPhoto

photoWithURL:[NSURL URLWithString:url]]; // 设 置图片地址 photo.caption = description;

// 设置??述 [photos
addObject:photo]; } _photos = photos; MWPhotoBrowser *browser = [[MWPhotoBrowser alloc] initWithDelegate:self]; browser.displayActionButton = YES; UINavigationController *nc = [[UINavigationController alloc] initWithRootViewController:browser]; nc.modalTransitionStyle = UIModalTransitionStyleCrossDissolve;
[self presentModalViewController:nc animated:YES];}#pragma mark - MWPhotoBrowserDelegate- (NSUInteger)numberOfPhotosInPhotoBrowser:(MW PhotoBrowser *)photoBrowser { return _photos.count;}- (MWPhoto *)photoBrowser:(MWPhotoBrowser *)photoBrowser photoAtIndex:(NSUInteger)index { if (index < _photos.count) return [_photos objectAtIndex:index]; return nil;}

ios-image-filter s

GitHub:https://github.com/esilverberg/ios-image-filters ??供多种图片滤镜效果。

PDF Reader Core for iOS

GitHub:https://github.com/vfr/Reader PDF阅读器核心。

DTCoreText

GitHub:https://github.com/Cocoanetics/DTCoreText 支持富文本的显示如HTML。

FTCoreText

GitHub:https://github.com/FuerteInternational/FTCoreText 富文本视图

CoreTextWrapp er

GitHub:https://github.com/akosma/CoreTextWrapper 支持多列的文本视图

Base64

GitHub:https://github.com/nicklockwood/Base64 ??供对字符串的Base64编码

RNCryptor

GitHub:https://github.com/rnapier/RNCryptor ??供AES加密方法