+ (instancetype)shareManager {
 static CCPaomaView *pModel = nil;
 static dispatch_once_t once;
 dispatch_once(&once, ^{
  pModel = [[CCPaomaView alloc]initWithFrame:CGRectMake(0, 0, KScreenWidth, 0.0468 *KScreenHeight)];
 });
 return pModel;
}

2.把接收的數(shù)據(jù)存在本地的 plist，不適用于大量數(shù)據(jù)，每次讀取第一個(gè)數(shù)據(jù)，讀取完成刪除整個(gè) plist，再把剩下的重新存進(jìn) plist

3.根據(jù)動(dòng)畫代理，監(jiān)聽動(dòng)畫執(zhí)行結(jié)束，將動(dòng)畫實(shí)例置為 nil

- (void)animationDidStop:(CAAnimation *)anim finished:(BOOL)flag{
 NSLog(@"%@",[self.paomaLabel.layer animationForKey:@"paoMaDeng"]);
 if ([self.paomaLabel.layer animationForKey:@"paoMaDeng"] == anim) {
  //移除第一組數(shù)據(jù)
  [_array removeObjectAtIndex:0];
  
  //移除整個(gè) plist
  [CCPaomaModel removePaomaPlist];
  
  //重新寫入
  [_array writeToFile:[CCPaomaModel filename] atomically:YES];
  
  //動(dòng)畫停止之后，將實(shí)例置為 nil
  _pmAniamtion = nil;
  
  //數(shù)組為空之后移除跑馬燈
  if (_array.count > 0) {
   [self showPaomaView:self.superview];
  }else{
   self.hidden = YES;
   [self removeFromSuperview];
  }
  NSLog(@"%@",self.array);
 }
}

4.判斷動(dòng)畫實(shí)例是否為空，使得切換界面，跑馬燈繼續(xù)，而不是重新開始

- (void)paomaAniamtion:(CGFloat)count{
 //判斷動(dòng)畫實(shí)例存不存在，存在繼續(xù)，不存在即創(chuàng)建
 if (_pmAniamtion == nil) {
  _pmAniamtion = [CABasicAnimation animation];
  _pmAniamtion.keyPath = @"transform.translation.x";
  CGFloat W = CGRectGetWidth(_paomaLabel.bounds);
  _pmAniamtion.fromValue = @(W);
  _pmAniamtion.toValue = @(-W);
  _pmAniamtion.duration = _aniTime;
  _pmAniamtion.repeatCount = count;
  _pmAniamtion.removedOnCompletion = NO;  //動(dòng)畫結(jié)束不移除
  _pmAniamtion.fillMode = kCAFillModeForwards; //動(dòng)畫結(jié)束會(huì)保持結(jié)束的狀態(tài)
  _pmAniamtion.delegate = self;    //設(shè)置代理
  [_paomaLabel.layer addAnimation:_pmAniamtion forKey:@"paoMaDeng"];
 }else{
  _pmAniamtion.repeatCount = count;
 }
}

5.切換界面，暫停、恢復(fù)動(dòng)畫

#pragma mark -- 界面出現(xiàn)、消失，創(chuàng)建、恢復(fù)、暫停動(dòng)畫
- (void)viewWillAppear:(BOOL)animated {
 [_paomaView showPaomaView:self.view];
 [_paomaView resumeAnimation];
}

- (void)viewWillDisappear:(BOOL)animated {
 [_paomaView pauseAniamtion];
}

話不多說，github 見代碼

以上就是本文的全部?jī)?nèi)容，希望對(duì)大家的學(xué)習(xí)有所幫助，也希望大家多多支持腳本之家。

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