本文分享了IOS Gif圖片展現N種方法,供年夜家參考,詳細內容以下
原生辦法:
1.UIWebView
特色:加載速度略長,機能更優,播放的gif靜態圖加倍流利。
//靜態展現GIF圖片-WebView -(void)showGifImageWithWebView{ //讀取gif圖片數據 NSData *gifData = [NSData dataWithContentsOfFile: [[NSBundle mainBundle] pathForResource:@"earthGif" ofType:@"gif"]]; //UIWebView生成 UIWebView *imageWebView = [[UIWebView alloc] initWithFrame:CGRectMake(112, 302, 132, 102)]; //用戶弗成交互 imageWebView.userInteractionEnabled = NO; //加載gif數據 [imageWebView loadData:gifData MIMEType:@"image/gif" textEncodingName:nil baseURL:nil]; //視圖添加此gif控件 [self.view addSubview:imageWebView]; }
2.UIImagView
加載的方法加倍疾速,機能不如UIWebView,長處:易於擴大
1)
增長一個UIImageView的種別(category),增長兩個辦法
UIImage+Tool
.h
#import <UIKit/UIKit.h> @interface UIImageView (Tool) /** 解析gif文件數據的辦法 block中會將解析的數據傳遞出來 */ -(void)getGifImageWithUrk:(NSURL *)url returnData:(void(^)(NSArray<UIImage *> * imageArray,NSArray<NSNumber *>*timeArray,CGFloat totalTime, NSArray<NSNumber *>* widths, NSArray<NSNumber *>* heights))dataBlock; /** 為UIImageView添加一個設置gif圖內容的辦法: */ -(void)yh_setImage:(NSURL *)imageUrl; @end
.m
// // UIImageView+Tool.m // OneHelper // // Created by qiuxuewei on 16/3/2. // Copyright © 2016年 邱學偉. All rights reserved. // #import "UIImageView+Tool.h" //要引入ImageIO庫 #import <ImageIO/ImageIO.h> @implementation UIImageView (Tool) //解析gif文件數據的辦法 block中會將解析的數據傳遞出來 -(void)getGifImageWithUrk:(NSURL *)url returnData:(void(^)(NSArray<UIImage *> * imageArray, NSArray<NSNumber *>*timeArray,CGFloat totalTime, NSArray<NSNumber *>* widths,NSArray<NSNumber *>* heights))dataBlock{ //經由過程文件的url來將gif文件讀取為圖片數據援用 CGImageSourceRef source = CGImageSourceCreateWithURL((CFURLRef)url, NULL); //獲得gif文件中圖片的個數 size_t count = CGImageSourceGetCount(source); //界說一個變量記載gif播放一輪的時光 float allTime=0; //寄存一切圖片 NSMutableArray * imageArray = [[NSMutableArray alloc]init]; //寄存每幀播放的時光 NSMutableArray * timeArray = [[NSMutableArray alloc]init]; //寄存每張圖片的寬度 (普通在一個gif文件中,一切圖片尺寸都邑一樣) NSMutableArray * widthArray = [[NSMutableArray alloc]init]; //寄存每張圖片的高度 NSMutableArray * heightarray = [[NSMutableArray alloc]init]; //遍歷 for (size_t i=0; i<count; i++) { CGImageRef image = CGImageSourceCreateImageAtIndex(source, i, NULL); [imageArray addObject:(__bridge UIImage *)(image)]; CGImageRelease(image); //獲得圖片信息 NSDictionary * info = (__bridge NSDictionary*)CGImageSourceCopyPropertiesAtIndex(source, i, NULL); CGFloat width = [[info objectForKey:(__bridge NSString *)kCGImagePropertyPixelWidth] floatValue]; CGFloat height = [[info objectForKey:(__bridge NSString *)kCGImagePropertyPixelHeight] floatValue]; [widthArray addObject:[NSNumber numberWithFloat:width]]; [heightarray addObject:[NSNumber numberWithFloat:height]]; NSDictionary * timeDic = [info objectForKey:(__bridge NSString *)kCGImagePropertyGIFDictionary]; CGFloat time = [[timeDic objectForKey:(__bridge NSString *)kCGImagePropertyGIFDelayTime]floatValue]; allTime+=time; [timeArray addObject:[NSNumber numberWithFloat:time]]; } dataBlock(imageArray,timeArray,allTime,widthArray,heightarray); } //為UIImageView添加一個設置gif圖內容的辦法: -(void)yh_setImage:(NSURL *)imageUrl{ __weak id __self = self; [self getGifImageWithUrk:imageUrl returnData:^(NSArray<UIImage *> *imageArray, NSArray<NSNumber *> *timeArray, CGFloat totalTime, NSArray<NSNumber *> *widths, NSArray<NSNumber *> *heights) { //添加幀動畫 CAKeyframeAnimation *animation = [CAKeyframeAnimation animationWithKeyPath:@"contents"]; NSMutableArray * times = [[NSMutableArray alloc]init]; float currentTime = 0; //設置每幀的時光占比 for (int i=0; i<imageArray.count; i++) { [times addObject:[NSNumber numberWithFloat:currentTime/totalTime]]; currentTime+=[timeArray[i] floatValue]; } [animation setKeyTimes:times]; [animation setValues:imageArray]; [animation setTimingFunction:[CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionLinear]]; //設置輪回 animation.repeatCount= MAXFLOAT; //設置播放總時長 animation.duration = totalTime; //Layer層添加 [[(UIImageView *)__self layer]addAnimation:animation forKey:@"gifAnimation"]; }]; } @end
在加載gif的處所應用
導入 UIImageView+Tool
-(void)showGifImageWithImageView{ UIImageView * imageView = [[UIImageView alloc]initWithFrame:CGRectMake(112, 342, 132, 102)]; NSURL * url = [[NSURL alloc]initFileURLWithPath:[[NSBundle mainBundle] pathForResource:@"earthGif.gif" ofType:nil]]; [imageView yh_setImage:url]; [self.view addSubview:imageView]; }
第三方:
1.YLGIFImage
github鏈接: https://github.com/liyong03/YLGIFImage
#import "YLGIFImage.h" #import "YLImageView.h" -(void)showGifImageWithYLImageView{ YLImageView* imageView = [[YLImageView alloc] initWithFrame:CGRectMake(112, 342, 132, 102)]; CGFloat centerX = self.view.center.x; [imageView setCenter:CGPointMake(centerX, 402)]; [self.view addSubview:imageView]; imageView.image = [YLGIFImage imageNamed:@"earthGif.gif"]; }
2.FLAnimatedImage
github鏈接:https://github.com/Flipboard/FLAnimatedImage
-(void)showGifImageWithFLAnimatedImage{ //GIF 轉 NSData //Gif 途徑 NSString *pathForFile = [[NSBundle mainBundle] pathForResource: @"earthGif" ofType:@"gif"]; //轉成NSData NSData *dataOfGif = [NSData dataWithContentsOfFile: pathForFile]; //初始化FLAnimatedImage對象 FLAnimatedImage *image = [FLAnimatedImage animatedImageWithGIFData:dataOfGif]; //初始化FLAnimatedImageView對象 FLAnimatedImageView *imageView = [[FLAnimatedImageView alloc] init]; //設置GIF圖片 imageView.animatedImage = image; imageView.frame = CGRectMake(112, 342, 132, 102); [self.view addSubview:imageView]; }
以上就是本文的全體內容,願望對年夜家的進修有所贊助。
【iOS Gif圖片展現N種方法(原生+第三方)】的相關資料介紹到這裡,希望對您有所幫助! 提示:不會對讀者因本文所帶來的任何損失負責。如果您支持就請把本站添加至收藏夾哦!