一
alloc] initWithFrame:CGRectMake(0,,100)];
mainBundle] pathForResource:@"csjg"ofType
CGImageSourceRef cImageSource = :imagePath], NULL);
size_t imageCount = CGImageSourceGetCount(cImageSource);
NSMutableArray *images = [[NSMutableArrayalloc] initWithCapacity:imageCount];
NSMutableArray *times = [[NSMutableArrayalloc] initWithCapacity:imageCount];
NSMutableArray *keyTimes = [[NSMutableArrayalloc] initWithCapacity:imageCount];
float totalTime = 0;
for (size_t i = 0; i < imageCount; i++) {
CGImageRef cgimage= CGImageSourceCreateImageAtIndex(cImageSource, i,NULL);
[images addObject:(__bridge id)cgimage];
CGImageRelease(cgimage);
NSDictionary *properties = (__bridge NSDictionary *)CGImageSourceCopyPropertiesAtIndex(cImageSource, i,NULL);
NSDictionary *gifProperties = [propertiesNSString *)kCGImagePropertyGIFDictionary];
NSString *gifDelayTime = [gifProperties valueForKey:(__bridgeNSString* )kCGImagePropertyGIFDelayTime];
[times addObject:gifDelayTime];
totalTime += [gifDelayTimefloatValue];
// _size.width = [[properties valueForKey:(NSString*)kCGImagePropertyPixelWidth] floatValue];
// _size.height = [[properties valueForKey:(NSString*)kCGImagePropertyPixelHeight] floatValue];
}
float currentTime = 0;
for (size_t i = 0; i < times.count; i++) {
float keyTime = currentTime / totalTime;
[keyTimesaddObject:[NSNumbernumberWithFloat:keyTime]];
currentTime += [[timesobjectAtIndex:i] floatValue];
}
CAKeyframeAnimation *animation = [CAKeyframeAnimation
CAMediaTimingFunctionfunctionWithName:kCAMediaTimingFunctionLinear]];
[animation setValues:images];
[animation setKeyTimes:keyTimes];
animation.duration = totalTime;
animation.repeatCount =HUGE_VALF;
[view.layeraddAnimation:animation forKey:@"gifAnimation"];
二
//
// GifView.h
// GIFViewer
//
// Created by xToucher04 on 11-11-9.
// Copyright 2011 Toucher. All rights reserved.
//
#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
// GIFViewer
//
// Created by xToucher04 on 11-11-9.
// Copyright 2011 Toucher. All rights reserved.
//
#import "GifView.h"
#import <QuartzCore/QuartzCore.h>
@implementation GifView
– (id)initWithFrame:(CGRect)frame filePath:(NSString *)_filePath{
self = [super initWithFrame:frame];
if (self) {
NSDictionaryNSNumber]forKey:(NSString *)kCGImagePropertyGIFLoopCount]
NSString *)kCGImagePropertyGIFDictionary]retain];
gif =CGImageSourceCreateWithURLfileURLWithPath
CGImageSourceGetCount
scheduledTimerWithTimeIntervalselector:@selector(play)userInfo:nilrepeats
[timerfire];
}
returnself;
}
– (id)initWithFrame:(CGRect)frame data:(NSData *)_data{
self = [super initWithFrame:frame];
if (self) {
NSDictionaryNSNumber]forKey:(NSString *)kCGImagePropertyGIFLoopCount]
NSString *)kCGImagePropertyGIFDictionary]retain];
//gif = CGImageSourceCreateWithURL((CFURLRef)[NSURL fileURLWithPath:_filePath], (CFDictionaryRef)gifProperties);
gif =CGImageSourceCreateWithData
CGImageSourceGetCount
scheduledTimerWithTimeIntervalselector:@selector(play)userInfo:nilrepeats
[timerfire];
}
returnself;
}
-(void)play
{
index ++;
index =index%count;
CGImageRef ref =CGImageSourceCreateImageAtIndex(gif,
layer
CFRelease(ref);
}
-(void)removeFromSuperview
{
@"removeFromSuperview");
[timerinvalidate];
timer =nil;
[superremoveFromSuperview];
}
– (void)dealloc {
@"dealloc");
[gifPropertiesrelease];
[superdealloc];
}
@end
使用的时候：
allocCGRectMake(100,,mainBundle] pathForResource:@"csjg"ofType
，分之百的把自己推销给自己。
