【iOS】在頁面中展示gif動圖

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 1 - (void)viewDidLoad 2 { 3     [super viewDidLoad]; 4     // Do any additional setup after loading the view. 5      6     //1:使用第三方庫 7     NSData *data = [NSData dataWithContentsOfFile:[[NSBundle mainBundle] pathForResource:@"moe" ofType:@"gif"]]; 8     GifView *dataView = [[GifView alloc] initWithFrame:CGRectMake(50, 30, 100, 100) data:data]; 9     [self.view addSubview:dataView];10     11     // 或者12     GifView *pathView =[[GifView alloc] initWithFrame:CGRectMake(170, 30, 100, 100) filePath:[[NSBundle mainBundle] pathForResource:@"moe" ofType:@"gif"]];13     [self.view addSubview:pathView];14     15     //2:使用webview16     NSString *path = [[NSBundle mainBundle] pathForResource:@"moe" ofType:@"gif"];17     NSData *gifData = [NSData dataWithContentsOfFile:path];18     UIWebView *webView = [[UIWebView alloc] initWithFrame:CGRectMake(110, 150, 100, 100)];19     webView.backgroundColor = [UIColor clearColor];20     webView.scalesPageToFit = YES;21     [webView loadData:gifData MIMEType:@"image/gif" textEncodingName:nil baseURL:nil];22     [self.view addSubview:webView];23 }

第三方庫代碼

////  GifView.h//  GifDemo//#import <UIKit/UIKit.h>#import <ImageIO/ImageIO.h>@interface GifView : UIView{    CGImageSourceRef gif;    NSDictionary *gifProperties;    size_t index;    size_t count;    NSTimer *timer;}- (id)initWithFrame:(CGRect)frame filePath:(NSString *)_filePath;- (id)initWithFrame:(CGRect)frame data:(NSData *)_data;@end

////  GifView.m//  GifDemo//#import "GifView.h"#import <QuartzCore/QuartzCore.h>@implementation GifView- (id)initWithFrame:(CGRect)frame filePath:(NSString *)_filePath{    self = [super initWithFrame:frame];    if (self) {        gifProperties = [NSDictionary dictionaryWithObject:[NSDictionary dictionaryWithObject:[NSNumber numberWithInt:0] forKey:(NSString *)kCGImagePropertyGIFLoopCount]forKey:(NSString *)kCGImagePropertyGIFDictionary];        gif = CGImageSourceCreateWithURL((__bridge CFURLRef)[NSURL fileURLWithPath:_filePath], (__bridge CFDictionaryRef)gifProperties);        count =CGImageSourceGetCount(gif);        timer = [NSTimer scheduledTimerWithTimeInterval:0.12 target:self selector:@selector(play) userInfo:nil repeats:YES];        [timer fire];    }    return self;}- (id)initWithFrame:(CGRect)frame data:(NSData *)_data{    self = [super initWithFrame:frame];    if (self) {        gifProperties = [NSDictionary dictionaryWithObject:[NSDictionary dictionaryWithObject:[NSNumber numberWithInt:0] forKey:(NSString *)kCGImagePropertyGIFLoopCount]forKey:(NSString *)kCGImagePropertyGIFDictionary];        gif = CGImageSourceCreateWithData((__bridge CFDataRef)_data, (__bridge CFDictionaryRef)gifProperties);        count =CGImageSourceGetCount(gif);        timer = [NSTimer scheduledTimerWithTimeInterval:0.12 target:self selector:@selector(play) userInfo:nil repeats:YES];        [timer fire];    }    return self;}-(void)play{    index ++;    index = index%count;    CGImageRef ref = CGImageSourceCreateImageAtIndex(gif, index, (__bridge CFDictionaryRef)gifProperties);    self.layer.contents = (__bridge id)ref;    CFRelease(ref);}-(void)removeFromSuperview{    NSLog(@"removeFromSuperview");    [timer invalidate];    timer = nil;    [super removeFromSuperview];}- (void)dealloc{    NSLog(@"dealloc");    CFRelease(gif);}/* // Only override drawRect: if you perform custom drawing. // An empty implementation adversely affects performance during animation. - (void)drawRect:(CGRect)rect { // Drawing code } */@end