iOS开发 automaticallyAdjustsScrollViewInsets 属性设置

遇到的问题

苹果官方文档解释是这样的

A Boolean value that indicates whether the view controller should automatically adjust its scroll view insets.

Declaration

SWIFT

var automaticallyAdjustsScrollViewInsets: Bool

OBJECTIVE-C

@property(nonatomic, assign) BOOL automaticallyAdjustsScrollViewInsets

Discussion

The default value of this property is YES, which allows the view controller to adjust its scroll view insets in response to the screen areas consumed by the status bar, navigation bar, and toolbar or tab bar. Set to NO if you want to manage scroll view inset adjustments yourself, such as when there is more than one scroll view in the view hierarchy.

Availability

Available in iOS 7.0 and later.

就是说automaticallyAdjustsScrollViewInsets是根据按所在界面的status bar，navigationbar，与tabbar的高度，自动调整scrollview的 inset,设置为no，不让viewController调整，如果我们不让它自己调整，这个属性设置为no就行了

即：

    self.automaticallyAdjustsScrollViewInsets =NO;