本文實(shí)例為大家分享了iOS全局跑馬燈制作方法,供大家參考,具體內(nèi)容如下
思路:
1.創(chuàng)建一個(gè)單例
+ (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(shuō),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VEVB武林網(wǎng)。
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