iOS 直播间礼物动画队列

主要用到NSOperation和NSOperationQueue实现动画队列

主要分三个类

animationManager :

#import "YGPreGiftAnimationManager.h"

#import "YGPreGiftAnimationOperation.h"

@interface YGPreGiftAnimationManager ()

@property (nonatomic,strong) NSCache *operationCache;/// 操作缓存池

@property (nonatomic, strong) NSOperationQueue *serialQueue;//贵重礼物动画队列

@property (nonatomic, copy) YGPreGiftFinishBlock finishBlock;

@end

@implementation YGPreGiftAnimationManager

- (void)showPreciousGiftAnimationWithGiftCount:(NSInteger)giftCount giftID:(NSInteger)giftID otherParamDict:(NSDictionary *)otherParamDict bgImgView:(UIImageView *)bgImgView animationView:(YGPreciousGiftAnimationView *)animationView webpImgView:(YYAnimatedImageView *)webpImgView finishBlock:(YGPreGiftFinishBlock)finishBlock {

self.finishBlock = finishBlock;

WeakSelf(self);

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

NSString *animatioKey = [NSString stringWithFormat:@"%ld%@", (long)giftID, [self getMsgId]];

YGPreGiftAnimationOperation *animationOperation = [[YGPreGiftAnimationOperation alloc] initWithAnimationView:animationView giftID:giftID otherParamDict:otherParamDict bgImgView:bgImgView webpImgView:webpImgView finishBlock:^{

[weakSelf.operationCache removeObjectForKey:animatioKey];

if (weakSelf.finishBlock) {

weakSelf.finishBlock();

}

}];

[self.operationCache setObject:animationOperation forKey:animatioKey];

[self.serialQueue addOperation:animationOperation];

}

//获取随机msgId

- (NSString *)getMsgId {

NSDateFormatter *formatter = [[NSDateFormatter alloc] init];

formatter.dateFormat = @"yyyyMMddHHmmss";

NSString *str = [formatter stringFromDate:[NSDate date]];

NSInteger index = (arc4random() % 900) + 100;

return [NSString stringWithFormat:@"%@%@%ld", str, [UserWrapper shareUserWrapper].UID, (long)index];

}

//取消所有操作

- (void)cancelAllAnimationOperation {

[self.serialQueue setSuspended:YES];

[self.serialQueue cancelAllOperations];

}

//贵重礼物动画队列

- (NSOperationQueue *)serialQueue {

if (!_serialQueue) {

_serialQueue = [[NSOperationQueue alloc] init];

_serialQueue.maxConcurrentOperationCount = 1;

}

return _serialQueue;

}

//操作缓存池

- (NSCache *)operationCache {

if (_operationCache==nil) {

_operationCache = [[NSCache alloc] init];

}

return _operationCache;

}

@end

animationOperation :

#import "YGPreGiftAnimationOperation.h"

@interface YGPreGiftAnimationOperation ()

@property (nonatomic, getter = isFinished) BOOL finished;

@property (nonatomic, getter = isExecuting) BOOL executing;

@property (nonatomic, copy) YGPreciousGiftAnimationFinishBlock finishBlock;

@end

@implementation YGPreGiftAnimationOperation

@synthesize finished = _finished;

@synthesize executing = _executing;

- (instancetype)initWithAnimationView:(YGPreciousGiftAnimationView *)view giftID:(NSInteger)giftID otherParamDict:(NSDictionary *)otherParamDict bgImgView:(UIImageView *)bgImgView webpImgView:(YYAnimatedImageView *)webpImgView finishBlock:(YGPreciousGiftAnimationFinishBlock)finishBlock {

self = [super init];

if (self) {

_executing = NO;

_finished = NO;

_view = view;

_giftID = giftID;

_otherParamDict = otherParamDict;

_bgImgView = bgImgView;

_webpImgView = webpImgView;

_finishBlock = finishBlock;

}

return self;

}

- (void)start

{

if ([self isCancelled]) {

self.finished = YES;

return;

}

self.executing = YES;

WeakSelf(self);

[[NSOperationQueue mainQueue] addOperationWithBlock:^{

switch (_giftID) {

case 0: //跑车

{

[_view showCarAnimationWithBlock:^{

self.finished = YES;

self.executing = NO;

if (weakSelf.finishBlock) {

weakSelf.finishBlock();

}

}];

}

break;

case 1: //webp

case 2:

case 3:

case 4:

case 5:

{

_webpImgView.hidden = NO;

[_view showWebpAnimationWithGiftID:_giftID otherParamDict:_otherParamDict bgImgView:_bgImgView animationImgView:_webpImgView block:^{

self.finished = YES;

self.executing = NO;

_webpImgView.hidden = YES;

if (weakSelf.finishBlock) {

weakSelf.finishBlock();

}

}];

}

break;

default:

break;

}

}];

}

#pragma mark - 手动触发 KVO

- (void)setExecuting:(BOOL)executing {

[self willChangeValueForKey:@"isExecuting"];

_executing = executing;

[self didChangeValueForKey:@"isExecuting"];

}

- (void)setFinished:(BOOL)finished {

[self willChangeValueForKey:@"isFinished"];

_finished = finished;

[self didChangeValueForKey:@"isFinished"];

}

@end

animationView :

这里主要做动画

我们的项目考虑包的大小, 只有跑车使用了帧动画＋UIView的animate动画, 其他大型礼物均使用了webp

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