m 文件中声明的变量。
BOOL isFirstTime;
我希望如果第一次按下播放按钮,那么它应该切换到暂停按钮并检查功能,isFirstTime
然后它应该启动计时器并执行该displayviewsAction
方法,如果暂停按钮恢复播放,那么它应该再次检查功能isFirstTime
或第二次,如果第二次命中,则应恢复计时器。
-(void)playpauseAction:(id)sender {
if ([audioPlayer isPlaying]){
[sender setImage:[UIImage imageNamed:@"Play Icon.png"] forState:UIControlStateSelected];
[audioPlayer pause];
[self pauseTimer];
} else {
[sender setImage:[UIImage imageNamed:@"pause.png"] forState:UIControlStateNormal];
[audioPlayer play];
[NSTimer scheduledTimerWithTimeInterval:1.0 target:self selector:@selector(AfterOneSecondsFuction) userInfo:nil repeats:YES];
}
}
-(void)pauseTimer{
pauseStart = [[NSDate dateWithTimeIntervalSinceNow:0] retain];
previousFireDate = [[timer fireDate] retain];
[timer setFireDate:[NSDate distantFuture]];
}
-(void)resumeTimer{
float pauseTime = -1*[pauseStart timeIntervalSinceNow];
[timer setFireDate:[previousFireDate initWithTimeInterval:pauseTime sinceDate:previousFireDate]];
[pauseStart release];
[previousFireDate release];
}
-(void)AfterOneSecondsFuction
{
if(!isFirstTime)
{
isFirstTime=YES;
return;
self.timer = [NSTimer scheduledTimerWithTimeInterval:11.0
target:self
selector:@selector(displayviewsAction:)
userInfo:nil
repeats:NO];
} else if (!isFirstTime){
isFirstTime=NO;
return;
[self resumeTimer];
}
}
- (void)displayviewsAction:(id)sender
{
First *firstController = [[First alloc] init];
firstController.view.frame = CGRectMake(0, 0, 320, 480);
CATransition *transitionAnimation = [CATransition animation];
[transitionAnimation setDuration:1];
[transitionAnimation setType:kCATransitionFade];
[transitionAnimation setTimingFunction:[CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseIn]];
[self.view.layer addAnimation:transitionAnimation forKey:kCATransitionFade];
[self.view addSubview:firstController.view];
[self.view addSubview:toolbar];
[firstController release];
}
-(void)Second
{
Second *secondController = [[Second alloc] init];
secondController.view.frame = CGRectMake(0, 0, 320, 480);
CATransition *transitionAnimation = [CATransition animation];
[transitionAnimation setDuration:1];
[transitionAnimation setType:kCATransitionReveal];
[transitionAnimation setTimingFunction:[CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseIn]];
[self.view.layer addAnimation:transitionAnimation forKey:kCATransitionReveal];
[self.view addSubview:secondController.view];
[self.view addSubview:toolbar];
[secondController release];
self.timer = [NSTimer scheduledTimerWithTimeInterval:27 target:self selector:@selector(Third) userInfo:nil repeats:NO];
}
看起来当第一次按下播放时,它只是切换到暂停按钮,不检查功能isFirstTime
,不启动计时器并执行 displayviewsaction。
如果有人能说出为什么它没有发生以及我做错了什么。
感谢帮助。