當(dāng)有導(dǎo)航欄和導(dǎo)航控制器時(shí),若控制器有多個(gè)控件,
1.當(dāng)?shù)谝粋€(gè)添加的控件不是scrollView時(shí)則對(duì)其他控件不會(huì)有什么影響;
2.當(dāng)?shù)谝粋€(gè)控件為scrollView時(shí),系統(tǒng)會(huì)自動(dòng)調(diào)整(多個(gè)scrollView只會(huì)影響最先添加的那個(gè))scrollView的內(nèi)邊距
(contentInsets),即內(nèi)部子控制器y+64,-->UIEdgeInsetsMake(64,0,0,0)
3.當(dāng)下面還存在tabBarController是下部?jī)?nèi)邊距也進(jìn)行了調(diào)整:-->UIEdgeInsetMake(64,0,49,0);

解決辦法

1.若要禁止系統(tǒng)這種做法則令:self.automaticallyAdjustScrollViewInsets = NO;
2.或在storyboard設(shè)置欄設(shè)置:Layout --> Adjust Scroll View insets
3.或者設(shè)置scrollView的內(nèi)邊距:self.scrollView.contentInsets = UIEdgeInsetsMake(-64,0,0,0)