使用自動佈局的滾動條

Question

我正在使用autolayout。因爲我只能添加constraints到view，但最大的情況下我必須使用滾動條。因此，如果我使用CGRectmake方法在scrollView上添加view。然後它不會在橫向模式下更改尺寸。

快照在人像模式：

快照在橫向模式下：

代碼：

UIScrollView *scrllView=[UIScrollView new]; 
    [scrllView setTranslatesAutoresizingMaskIntoConstraints:NO]; 

    [self.view addSubview:scrllView]; 
    [self.view addConstraint:[NSLayoutConstraint constraintWithItem:scrllView attribute:NSLayoutAttributeTrailing relatedBy:NSLayoutRelationEqual toItem:self.view attribute:NSLayoutAttributeTrailing multiplier:1.0 constant:0]]; 

    [self.view addConstraint:[NSLayoutConstraint constraintWithItem:scrllView attribute:NSLayoutAttributeLeading relatedBy:NSLayoutRelationEqual toItem:self.view attribute:NSLayoutAttributeLeading multiplier:1.0 constant:0]]; 


    [self.view addConstraint:[NSLayoutConstraint constraintWithItem:scrllView attribute:NSLayoutAttributeTop relatedBy:NSLayoutRelationEqual toItem:self.view attribute:NSLayoutAttributeTop multiplier:1.0 constant:0]]; 

    [self.view addConstraint:[NSLayoutConstraint constraintWithItem:scrllView attribute:NSLayoutAttributeBottom relatedBy:NSLayoutRelationEqual toItem:self.view attribute:NSLayoutAttributeBottom multiplier:1 constant:0]]; 


    [scrllView setContentSize:CGSizeMake(self.view.frame.size.width, 1000)]; 


    UIView *SBV=[UIView new]; 
    [SBV setFrame:CGRectMake(0, 0, self.view.frame.size.width,1000)]; 
    [SBV setTranslatesAutoresizingMaskIntoConstraints:YES]; 
    [SBV setBackgroundColor:[UIColor redColor]]; 
    [scrllView addSubview:SBV]; 

    UIButton *BTN=[UIButton new]; 

    [BTN setTranslatesAutoresizingMaskIntoConstraints:NO]; 

    [BTN setTitle:@"UPSide" forState:UIControlStateNormal]; 

    [BTN setTitleColor:[UIColor blackColor] forState:UIControlStateNormal]; 

    [SBV addSubview:BTN]; 


    [SBV addConstraint:[NSLayoutConstraint constraintWithItem:BTN attribute:NSLayoutAttributeTrailing relatedBy:NSLayoutRelationEqual toItem:SBV attribute:NSLayoutAttributeLeading multiplier:1.0 constant:100]]; 

    [SBV addConstraint:[NSLayoutConstraint constraintWithItem:BTN attribute:NSLayoutAttributeLeading relatedBy:NSLayoutRelationEqual toItem:SBV attribute:NSLayoutAttributeLeading multiplier:1.0 constant:0]]; 


    [SBV addConstraint:[NSLayoutConstraint constraintWithItem:BTN attribute:NSLayoutAttributeTop relatedBy:NSLayoutRelationEqual toItem:SBV attribute:NSLayoutAttributeTop multiplier:1.0 constant:0]]; 

    [SBV addConstraint:[NSLayoutConstraint constraintWithItem:BTN attribute:NSLayoutAttributeHeight relatedBy:NSLayoutRelationEqual toItem:nil attribute:NSLayoutAttributeNotAnAttribute multiplier:0 constant:100]]; 


    UIButton *BTN1=[UIButton new]; 
    [BTN1 setTranslatesAutoresizingMaskIntoConstraints:NO]; 
    [BTN1 setTitle:@"DOWNSide" forState:UIControlStateNormal]; 
    [BTN1 setTitleColor:[UIColor blackColor] forState:UIControlStateNormal]; 
    [SBV addSubview:BTN1]; 


    [SBV addConstraint:[NSLayoutConstraint constraintWithItem:BTN1 attribute:NSLayoutAttributeTrailing relatedBy:NSLayoutRelationEqual toItem:SBV attribute:NSLayoutAttributeLeading multiplier:1.0 constant:100]]; 

    [SBV addConstraint:[NSLayoutConstraint constraintWithItem:BTN1 attribute:NSLayoutAttributeLeading relatedBy:NSLayoutRelationEqual toItem:SBV attribute:NSLayoutAttributeLeading multiplier:1.0 constant:0]]; 


    [SBV addConstraint:[NSLayoutConstraint constraintWithItem:BTN1 attribute:NSLayoutAttributeBottom relatedBy:NSLayoutRelationEqual toItem:SBV attribute:NSLayoutAttributeBottom multiplier:1.0 constant:0]]; 

    [SBV addConstraint:[NSLayoutConstraint constraintWithItem:BTN1 attribute:NSLayoutAttributeHeight relatedBy:NSLayoutRelationEqual toItem:nil attribute:NSLayoutAttributeNotAnAttribute multiplier:0 constant:100]]; 

如何我可以創建應在景觀和porttrait模式下工作的視圖？

Answer 1

1. 禁用大小班用自動佈局的。（從視圖控制器的文件檢查器的界面生成器文件）
2. 舉一個滾動視圖中的ViewController的View.Take一種觀點認爲它裏面。
3. 現在選擇scrollView並從底欄[Pin]中選擇第二個選項，然後選擇所有四個約束（Leading，Top，Bottom，Trailing）並取消選中constarint Margin Button.Add 4 Constraints。
4. 現在選擇查看並從底欄[Pin]中選擇第二個選項，然後選擇所有四個約束（Leading，Top，Bottom，Trailing）和取消選中constarint Margin Button。也選擇高度限制（如果高度大於568，則設置底部約束0）。現在添加5個約束。並從底欄[對齊]中選擇第一個選項。並在容器中選擇第二個最後選項Horizo​​natal中心並添加1個約束。