iOS7 use ScrollView to slide the picture horizontally, automatically creating offset vertical offset problem

iOS7 use ScrollView to slide the picture horizontally, automatically creating offset vertical offset problem 

Red is ScrollView background color, after adding a picture on the ScrollView, there will always be a downward offset

Setting Contentoffset doesn't work either.

In iOS7, the controller has a

Automaticallyadjustsscrollviewinsets property, default = Yes

if (ios7&&[self respondstoselector: @selector (automaticallyadjustsscrollviewinsets)]) { Self.automaticallyadjustsscrollviewinsets = NO;}

@property (nonatomic, assign) BOOL automaticallyadjustsscrollviewinsets
Description	Specifies whether or not, the view controller should automatically adjust its scroll view insets.
Default value Isyes, which allows the view controller to adjust their scroll view insets in response to the screen areas con Sumed by the status bar, navigation bar, and toolbar or tab bar. Set Tonoif want to manage scroll view inset adjustments yourself, such as when there are more than one scroll view in T He view hierarchy.
Availability	IOS (7.0 and later)

 

iOS7 use ScrollView to slide the picture horizontally, automatically creating offset vertical offset problem