如何调整视图大小以使其子视图也调整大小

Question

我的窗口添加了一个子视图（我的根 ViewController 的视图）。

这样的子视图是其他几个子视图的父视图。

我刚刚完成了一个应用，现在我想添加一个广告。

这里有一些代码：

[window addSubview:viewController.view];
viewController.view.frame=CGRectMake(0,0,320,480-48);
viewController.clipToBounds=YES;
Ad *ad=[Ad alloc] initWithFrame:CGRectMake(0,480-48,320,48)];

上面的 viewController 有几个子视图，但它们不会调整大小。上面的 viewController.view 最初是 320,480 并且完全被子视图填充，直到底部的最后一个像素。在我将其高度从 480 更改为 460 后，子视图不会调整大小，因此在视图底部（广告所在的位置）某些子视图不可见。

当父视图 (viewController.view) 的高度减少 20 像素时，如何让子视图调整大小以适应父视图 (viewController.view)？ （我知道它们会有点变形）

Answer 1

您需要为子视图设置自动调整大小的掩码：

ad.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight;

有关详细信息，请参阅UIView documentation。

Answer 2

这篇文章几乎很有用。我最终结合了几个互联网资源和几个小时的挠头和玩耍来让它工作。我把它写在我的博客上：http://workingmatt.blogspot.co.uk/2014/08/xcode-5-quartz-composer-bug-fix.html

但为了方便起见，这里是重要的一点......

DisplayController.h

#import <Quartz/Quartz.h>
@interface DisplayController : NSObject
{
  __strong QCView * qcView;
  QCCompositionParameterView *qcParamsView;
}

@property (unsafe_unretained) IBOutlet NSWindow *displayWindow;
@property (unsafe_unretained) IBOutlet NSWindow *displaySettings;
@property (strong) IBOutlet QCCompositionParamterView *paramsView;
@end

和

DisplayController.m

@synthesize qcView;
@synthesize qcParamsView;

- (void) awakeFromNib
{
  NSString *path = [[NSBundle mainBundle] pathForResource:@"Luna Vertical2014" ofType:@"qtz"];
  NSView *superView = [self.displayWindow contentView];
  qcView = [[QCView alloc] initWithFrame:superView.frame];
  [superView addSubview:qcView];
  [superView setTranslatesAutoresizingMaskIntoConstraints:YES];
  [superView setAutoresizesSubviews:YES];
  [qcView setAutoresizingMask:NSViewWidthSizable|NSViewHeightSizable];

  [superView addConstraint:
   [NSLayoutConstraint constraintWithItem: qcView
                                attribute: NSLayoutAttributeWidth
                                relatedBy: NSLayoutRelationEqual
                                   toItem: superView
                                attribute: NSLayoutAttributeWidth
                               multiplier: 1
                                 constant: 0]];

  [superView addConstraint:
   [NSLayoutConstraint constraintWithItem: qcView
                                attribute: NSLayoutAttributeHeight
                                relatedBy: NSLayoutRelationEqual
                                   toItem: superView
                                attribute: NSLayoutAttributeHeight
                               multiplier: 1
                                 constant: 0]];
  [superView addConstraint:
   [NSLayoutConstraint constraintWithItem: qcView
                                attribute: NSLayoutAttributeCenterX
                                relatedBy: NSLayoutRelationEqual
                                   toItem: superView
                                attribute: NSLayoutAttributeCenterX
                               multiplier: 1
                                 constant: 0]];
  [superView addConstraint:
   [NSLayoutConstraint constraintWithItem: qcView
                                attribute: NSLayoutAttributeCenterY
                                relatedBy: NSLayoutRelationEqual
                                   toItem: superView
                                attribute: NSLayoutAttributeCenterY
                               multiplier: 1
                                 constant: 0]];

  [qcView unloadComposition];
  [qcView loadCompositionFromFile:path];
  [qcView setMaxRenderingFrameRate: 30.0];
  [qcView startRendering];

  if(![qcView loadCompositionFromFile:path])
  {
      NSLog(@"QC Composition failed to load");
      [NSApp terminate:nil];
  }
  NSLog(@"QC Composition has been loaded!!!!");
  NSLog(@"inputKeys: %@", qcView.inputKeys);

  //Create a parameters view
    //Note that a new referencing outlet was added from
    //Display Settings window to DisplayController
    //by dragging the round circle on the far left over 
    //to the blue cube in the xib.
    //Check out displaycontroller.h and .m

  NSView *paramsSuperView = [self.displaySettings contentView];
  qcParamsView = [[QCCompositionParameterView alloc] initWithFrame:paramsSuperView.frame];
  [paramsSuperView addSubview:qcParamsView];
  [paramsSuperView setTranslatesAutoresizingMaskIntoConstraints:YES];
  [paramsSuperView setAutoresizesSubviews:YES];
  [qcParamsView setAutoresizingMask:NSViewWidthSizable|NSViewHeightSizable];
  [qcParamsView setCompositionRenderer:qcView];

    // If you need mouse/keyboard interaction with QC uncomment this line
    //    qcView.eventForwardingMask = NSAnyEventMask;
}