IOS Play GIF animations

//

LoadGifView.h

Playgif

//

Created by cold bamboo on 15/4/27.

Copyright (c) 2015 cold bamboo. All rights reserved.

//

#import <UIKit/UIKit.h>

@interface Loadgifview:uiview

/**

* @brief Initialization

*

* @return

*/

-(Instancetype) initWithFrame: (CGRect) frame localfileurl: (Nsurl *) FileURL;

/**

* @brief start GIF animation

*

* @return

*/

-(void) startgifanimation;

/**

* @brief Stop GIF animation

*

* @return

*/

-(void) stopgifanimation;

/**

* @brief Get the frame of all the pictures in GIF

*

* @return

*/

+ (Nsarray *) Getframesfromgif: (Nsurl *) FileURL;

@end

//

loadgifview.m

Playgif

//

Created by cold bamboo on 15/4/27.

Copyright (c) 2015 cold bamboo. All rights reserved.

Play GIF

#import "LoadGifView.h"

#import <ImageIO/ImageIO.h>

#import <QuartzCore/CoreAnimation.h>

@interface Loadgifview ()

@property (nonatomic, strong) Nsmutablearray * frames;

@property (nonatomic, Strong) Nsmutablearray * framedelaytimes;

@property (nonatomic, assign) CGFloat totaltime;

@property (nonatomic, assign) cgfloat width;

@property (nonatomic, assign) cgfloat height;

@end

@implementation Loadgifview

/**

* @brief get information on GIF images

*

* @param

* @return

*/

void Getframeinfo (cfurlref url, nsmutablearray *frames, Nsmutablearray *delaytimes, cgfloat *totaltime,cgfloat * Gifwidth, CGFloat *gifheight)

{

Cgimagesourceref gifsource = Cgimagesourcecreatewithurl (URL, NULL);

Get frame Count

size_t Framecount = Cgimagesourcegetcount (Gifsource);

for (size_t i = 0; i < Framecount; ++i) {

Get each frame

Cgimageref frame = Cgimagesourcecreateimageatindex (Gifsource, I, NULL);

[Frames AddObject: (__bridge ID) frame];

Cgimagerelease (frame);

Get GIF info with each frame

Nsdictionary *dict = (nsdictionary*) cfbridgingrelease (Cgimagesourcecopypropertiesatindex (GifSource, I, NULL));

NSLog (@ "Kcgimagepropertygifdictionary%@", [Dict Valueforkey: (nsstring*) kcgimagepropertygifdictionary]);

Get GIF size

if (gifwidth! = NULL && gifheight! = null) {

*gifwidth = [[Dict valueforkey: (nsstring*) kcgimagepropertypixelwidth] floatvalue];

*gifheight = [[Dict valueforkey: (nsstring*) kcgimagepropertypixelheight] floatvalue];

}

The Kcgimagepropertygifdelaytime,kcgimagepropertygifunclampeddelaytime value in Kcgimagepropertygifdictionary is the same

Nsdictionary *gifdict = [dict valueforkey: (nsstring*) kcgimagepropertygifdictionary];

[Delaytimes addobject:[gifdict Valueforkey: (nsstring*) kcgimagepropertygifdelaytime]];

if (totaltime) {

*totaltime = *totaltime + [[gifdict Valueforkey: (nsstring*) kcgimagepropertygifdelaytime] floatValue];

}

Cfrelease (Cfbridgingretain (dict));

}

if (Gifsource) {

Cfrelease (Gifsource);

}

}

-(Instancetype) initWithFrame: (CGRect) frame localfileurl: (Nsurl *) FileURL

{

self = [super Initwithframe:frame];

if (self) {

_frames = [[Nsmutablearray alloc] init];

_framedelaytimes = [[Nsmutablearray alloc] init];

_width = 0;

_height = 0;

if (FileURL) {

Getframeinfo (__bridge cfurlref) FileURL, _frames, _framedelaytimes, &_totaltime, &_width, &_height);

}

}

return self;

}

+ (Nsarray *) Getframesfromgif: (Nsurl *) FileURL

{

Nsmutablearray *frames = [Nsmutablearray arraywithcapacity:3];

Nsmutablearray *delays = [Nsmutablearray arraywithcapacity:3];

Getframeinfo ((__bridge cfurlref) FileURL, frames, delays, NULL, NULL, NULL);

return frames;

}

-(void) startgifanimation

{

Cakeyframeanimation *animation = [cakeyframeanimation animationwithkeypath:@ "Contents"];

Nsmutablearray *times = [Nsmutablearray arraywithcapacity:3];

CGFloat currenttime = 0;

int count = (int) _framedelaytimes.count;

for (int i = 0; i < count; ++i) {

[Times Addobject:[nsnumber Numberwithfloat: (CurrentTime/_totaltime)];

CurrentTime + = [[_framedelaytimes objectatindex:i] floatvalue];

}

[Animation Setkeytimes:times];

Nsmutablearray *images = [Nsmutablearray arraywithcapacity:3];

for (int i = 0; i < count; ++i) {

[Images Addobject:[_frames objectatindex:i];

}

[Animation setvalues:images];

[Animation settimingfunction:[camediatimingfunction functionwithname:kcamediatimingfunctionlinear];

Animation.duration = _totaltime;

Animation.delegate = self;

Animation.repeatcount = maxfloat;

[Self.layer addanimation:animation forkey:@ "Gifanimation"];

}

-(void) stopgifanimation

{

[Self.layer removeallanimations];

}

@end

//

PlayGifViewController.h

Playgif

//

Created by cold bamboo on 15/4/27.

Copyright (c) 2015 cold bamboo. All rights reserved.

//

#import <UIKit/UIKit.h>

@interface Playgifviewcontroller:uiviewcontroller

@end

//

Playgifviewcontroller.m

Playgif

//

Created by cold bamboo on 15/4/27.

Copyright (c) 2015 cold bamboo. All rights reserved.

//

#import "PlayGifViewController.h"

#import "LoadGifView.h"

@interface Playgifviewcontroller ()

@property (nonatomic, Strong) Nsarray * IMAGEARR;

@end

@implementation Playgifviewcontroller

-(void) Viewdidload {

[Super Viewdidload];

Self.view.backgroundColor = [Uicolor blackcolor];

Play GIF animations

NSString * Path = [[NSBundle mainbundle] pathforresource:@ "2.gif" oftype:nil];

Loadgifview * Gifview = [[Loadgifview alloc] Initwithframe:cgrectmake ([UIScreen mainscreen].bounds.size.width-200)/2 .0f, Localfileurl:[nsurl Fileurlwithpath:path]];

[Gifview startgifanimation];

[Self.view Addsubview:gifview];

}

-(void) didreceivememorywarning {

[Super didreceivememorywarning];

}

@end

IOS Play GIF animations