iOS SVGAPlayer直播礼物动画

pod 'SVGAPlayer', '~> 2.3'
pod 'YYKit'

SVGAPlayer播放动画，YYKit是为了用它的队列数组YYThreadSafeArray。

创建一个动画管理类：
SVGAAnimationManager.h

//
//  SVGAAnimationManager.h
//  Demo
//
//  Created by 倪大头 on 2018/12/22.
//  Copyright © 2018年 倪大头. All rights reserved.
//

#import <Foundation/Foundation.h>

@class SVGAAnimationManager;
@protocol SVGAAnimationManagerDelegate <NSObject>
@optional;

- (void)SVGAAnimationManager:(SVGAAnimationManager *)svgaAnimationManager showSVGAAnimation:(NSString *)animationUrl;

@end

@interface SVGAAnimationManager : NSObject

//动画队列
@property (nonatomic, strong) YYThreadSafeArray *svgaAnimationArray;

//动画是否正在播放
@property (nonatomic, assign) BOOL isShowSVGAAnimation;

@property (nonatomic, weak) id <SVGAAnimationManagerDelegate> delegate;

- (void)addSvgaAnimation;

- (void)destroy;

@end

SVGAAnimationManager.m

//
//  SVGAAnimationManager.m
//  Demo
//
//  Created by 倪大头 on 2018/12/22.
//  Copyright © 2018年 倪大头. All rights reserved.
//

#import "SVGAAnimationManager.h"

@implementation SVGAAnimationManager

- (instancetype)init {
    self = [super init];
    if (self) {
        [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(addQueueSVGAAnimation:) name:@"addAnimation" object:nil];//监听一个发送礼物的通知，来模拟socket消息
    }
    return self;
}

//接到发送礼物的消息，把动画url添加进队列数组
- (void)addQueueSVGAAnimation:(NSNotification *)noti {
    if ([noti.object isKindOfClass:[NSString class]]) {
        [self.svgaAnimationArray addObject:noti.object];
        [self addSvgaAnimation];
    }
}

//如果礼物动画正在播放，不打断
- (void)addSvgaAnimation {
    if (!_isShowSVGAAnimation) {
        if (self.svgaAnimationArray.count == 0) return;
        if ([self.delegate respondsToSelector:@selector(SVGAAnimationManager:showSVGAAnimation:)]) {
            [self.delegate SVGAAnimationManager:self showSVGAAnimation:self.svgaAnimationArray.firstObject];
            [self.svgaAnimationArray removeFirstObject];
        }
    }
}

- (YYThreadSafeArray *)svgaAnimationArray {
    if (!_svgaAnimationArray) {
        _svgaAnimationArray = [YYThreadSafeArray array];
    }
    return _svgaAnimationArray;
}

- (void)destroy {
    [self.svgaAnimationArray removeAllObjects];
    self.delegate = nil;
    [[NSNotificationCenter defaultCenter] removeObserver:self];
}

@end

创建一个用于播放动画的VC：
SVGAPlayerVC.m

//
//  SVGAPlayerVC.m
//  Demo
//
//  Created by 倪大头 on 2018/12/22.
//  Copyright © 2018年 倪大头. All rights reserved.
//

#import "SVGAPlayerVC.h"
#import "SVGA.h"
#import "SVGAAnimationManager.h"
#import "UIButton+touch.h"

@interface SVGAPlayerVC() <SVGAPlayerDelegate, SVGAAnimationManagerDelegate>

@property (nonatomic, strong) SVGAPlayer *aPlayer;

@property (nonatomic, strong) SVGAAnimationManager *svgaAnimationManager;

@end

@implementation SVGAPlayerVC

static SVGAParser *parser;

- (void)viewDidLoad {
    [super viewDidLoad];
    
    self.view.backgroundColor = [UIColor blackColor];
    
    [self createUI];
}

- (void)createUI {
    //初始化svga动画管理器
    _svgaAnimationManager = [[SVGAAnimationManager alloc]init];
    _svgaAnimationManager.delegate = self;
    
    //添加播放器
    [self.view addSubview:self.aPlayer];
    self.aPlayer.delegate = self;
    self.aPlayer.frame = CGRectMake(0, 64, UI_SCREEN_WIDTH, UI_SCREEN_WIDTH);
    self.aPlayer.loops = 1;
    self.aPlayer.clearsAfterStop = YES;
    parser = [[SVGAParser alloc] init];

    UIButton *sendBtn = [[UIButton alloc]initWithFrame:CGRectMake(40, UI_SCREEN_HEIGHT - 64 - 100, UI_SCREEN_WIDTH - 80, 45)];
    [sendBtn setTitle:@"send" forState:UIControlStateNormal];
    [sendBtn setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
    sendBtn.titleLabel.font = [UIFont systemFontOfSize:15];
    sendBtn.backgroundColor = [UIColor whiteColor];
    sendBtn.isIgnore = YES;
    [self.view addSubview:sendBtn];
    [sendBtn addTarget:self action:@selector(addSVGAAnimation) forControlEvents:UIControlEventTouchUpInside];
}

- (void)viewWillLayoutSubviews {
    [super viewWillLayoutSubviews];
    
    self.aPlayer.frame = CGRectMake(0, 64, self.view.bounds.size.width, self.view.bounds.size.height);
}

//随机选一个动画，模拟服务器返回
- (void)addSVGAAnimation {
    NSArray *items = @[
                       @"https://github.com/yyued/SVGA-Samples/blob/master/EmptyState.svga?raw=true",
                       @"https://github.com/yyued/SVGA-Samples/blob/master/HamburgerArrow.svga?raw=true",
                       @"https://github.com/yyued/SVGA-Samples/blob/master/PinJump.svga?raw=true",
                       @"https://github.com/yyued/SVGA-Samples/blob/master/TwitterHeart.svga?raw=true",
                       @"https://github.com/yyued/SVGA-Samples/blob/master/Walkthrough.svga?raw=true",
                       @"https://github.com/yyued/SVGA-Samples/blob/master/angel.svga?raw=true",
                       @"https://github.com/yyued/SVGA-Samples/blob/master/halloween.svga?raw=true",
                       @"https://github.com/yyued/SVGA-Samples/blob/master/kingset.svga?raw=true",
                       @"https://github.com/yyued/SVGA-Samples/blob/master/posche.svga?raw=true",
                       @"https://github.com/yyued/SVGA-Samples/blob/master/rose.svga?raw=true",
                       ];
    [[NSNotificationCenter defaultCenter] postNotificationName:@"addAnimation" object:items[arc4random() % 10]];
}

//播放动画
- (void)SVGAAnimationManager:(SVGAAnimationManager *)svgaAnimationManager showSVGAAnimation:(NSString *)animationUrl {
    NSLog(@"动画URL %@", animationUrl);
    _svgaAnimationManager.isShowSVGAAnimation = YES;
    [UIApplication sharedApplication].networkActivityIndicatorVisible = YES;
    [parser parseWithURL:[NSURL URLWithString:animationUrl]
         completionBlock:^(SVGAVideoEntity * _Nullable videoItem) {
             [UIApplication sharedApplication].networkActivityIndicatorVisible = NO;
             if (videoItem != nil) {
                 self.aPlayer.videoItem = videoItem;
                 [self.aPlayer startAnimation];
             }
         } failureBlock:nil];
}

//播放完成改变正在播放的状态，并播放队列中下一个动画
- (void)svgaPlayerDidFinishedAnimation:(SVGAPlayer *)player {
    NSLog(@"播放完成");
    _svgaAnimationManager.isShowSVGAAnimation = NO;
    [_svgaAnimationManager addSvgaAnimation];
}

- (SVGAPlayer *)aPlayer {
    if (_aPlayer == nil) {
        _aPlayer = [[SVGAPlayer alloc] init];
    }
    return _aPlayer;
}

@end