设置scrollView内容的尺寸(滚动的范围)      self.scrollView.contentSize = CGSizeMake(892, 480);      self.scrollView.contentSize = self.minionView.image.size;      self.scrollView.contentSize = self.minionView.frame.size; // 总体内容的范围(滚动范围)    // <#CGFloat top#>, <#CGFloat left#>, <#CGFloat bottom#>, <#CGFloat right#>    //外边距(用于穿透效果等)    self.scrollView.contentInset = UIEdgeInsetsMake(10, 20, 40, 80);

- (IBAction)scroll {      [UIView animateWithDuration:1.0 animations:^{          self.scrollView.contentOffset = CGPointMake(100, 0);      }];    //    CGPoint offset = CGPointMake(-100, -100);    CGPoint offset = self.scrollView.contentOffset;    offset.x += 10;    offset.y += 10;    [self.scrollView setContentOffset:offset animated:YES];}

 

- (void)viewDidLoad{    [super viewDidLoad];        // 设置内容尺寸//    CGFloat contentH = self.lastBtn.frame.origin.y + self.lastBtn.frame.size.height+ 10;    // 10是底部的间距    CGFloat contentH = CGRectGetMaxY(self.lastBtn.frame) + 10;    self.scrollView.contentSize = CGSizeMake(0, contentH);        // 增加额外的滚动区域(在顶部增加64的区域,在底部增加44的区域)    self.scrollView.contentInset = UIEdgeInsetsMake(64, 0, 44, 0);        // 设置一开始的滚动位置(往下滚动64)    self.scrollView.contentOffset = CGPointMake(0, -64);}