使用nstimer在無限滾動視圖中滑動圖像

我有三個圖像。它們應該像從動輪一樣每4秒從右到左進行動畫製作。如果用戶拖動到第二張圖像，那麼在4秒鐘後從第2 - 第3張開始滑動。如何實現這一點？使用nstimer在無限滾動視圖中滑動圖像

currntly我使用下面的代碼，但它不按預期工作。

[NSTimer scheduledTimerWithTimeInterval:4.0 target:self selector:@selector(doAnimation) userInfo:nil repeats:YES]; 

-(void)doAnimation 
{ 

    if (currentPage) { 

     [self scrollFromCurrentpage]; 
     return; 
    } 

    //CGPoint p=CGPointMake(count*320, 0); 

    if (count==3) { 
     count=0; 

     [_scrollView setContentOffset:CGPointMake(0, 0)animated:NO]; 

     return; 
    } 


    count++; 
    [UIView animateWithDuration:2.0 delay:0 options:UIViewAnimationOptionCurveEaseOut animations:^ 
    { 
     CGRect rect= CGRectMake(count*320, 0, 320, 352); 
     [_scrollView scrollRectToVisible:rect animated:NO]; 

    }completion:^(BOOL finished) 
    { 


    }]; 
} 
-(void)scrollFromCurrentpage 
{ 

    [UIView animateWithDuration:2.0 delay:0 options:UIViewAnimationOptionCurveEaseOut animations:^ 
    { 
     CGRect rect= CGRectMake(currentPage*320, 0, 320, 352); 
     [_scrollView scrollRectToVisible:rect animated:NO]; 
     currentPage=0; 

    }completion:^(BOOL finished) 
    { 


    }]; 
}

來源

2015-07-20 MuraliMohan