xcode iOS 8 Today Extension 的最大高度？
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Maximum height of iOS 8 Today Extension?
提问by user2816488
I am working on a Today Extension with a dynamically sized table. I have been able to get the table to resize for the content using:
我正在使用动态大小的表格开发 Today Extension。我已经能够使用以下方法调整表格的内容大小：
self.preferredContentSize = accountsTable.contentSize
However, I have found that it will not get taller than a certain size (568 px) even though I can tell the table contentSize is larger.
但是，我发现它不会超过特定大小（568 像素），即使我可以告诉表 contentSize 更大。
I'm not clear if this is a built-in limit or if there is a way around this to make a larger view. It appears that some previous extensions (Stocks widget) is able to become larger.
我不清楚这是否是一个内置限制，或者是否有办法解决这个问题以扩大视野。似乎一些以前的扩展（股票小部件）能够变得更大。
Anyone else running into the same behavior. Anyone know if it's possible to make an extension appear larger either immediately or using a "Show All" button like the Stock widget?
其他任何人都会遇到同样的行为。任何人都知道是否可以立即或使用“全部显示”按钮（如股票小部件）使扩展程序显得更大？
采纳答案by Urkman
I made some tests and you can calculate the maximum height of your Today Extension with this formular:
我做了一些测试，你可以用这个公式计算你今天扩展的最大高度：
for iPhone:
对于 iPhone：
float maxHeight = [[ UIScreen mainScreen ] bounds ].size.height - 126;
for iPad:
对于 iPad：
float maxHeight = [[ UIScreen mainScreen ] bounds ].size.height - 171;
This should work for alle Screen sizes...
这应该适用于所有屏幕尺寸......
回答by Bart?omiej Semańczyk
Ok, although you can assign to the preferredContentSizeany CGSizeit is reduced to max height and width.
好的，尽管您可以将其分配给preferredContentSize任何CGSize减少到最大高度和宽度的对象。
DeviceOrientation (max width, max height):
设备方向（最大宽度，最大高度）：
iPhone 5SPortrait (272, 441.5)
iPhone 5SLandscape (520, 205.5)iPhone 6Portrait (327, 540.5)
iPhone 6Landscape (586, 260.5)iPhone 6 PlusPortrait (362, 610)
iPhone 6 PlusLandscape (585, 288)iPad MiniPortrait (535, 853)
iPad MiniLandscape (535, 597)iPadPortrait (711, 985)
iPadLandscape (967, 729)
iPhone 5S人像 ( 272, 441.5)
iPhone 5S风景 ( 520, 205.5)iPhone 6纵向 ( 327, 540.5)
iPhone 6横向 ( 586, 260.5)iPhone 6 Plus人像 ( 362, 610)
iPhone 6 Plus风景 ( 585, 288)ipad公司赠送人像（535，853）
的iPad赠送景观（535，597）iPad的人像（711，985）
的iPad景观（967，729）
How did I get these values?
我是如何获得这些值的？
@IBOutlet weak var sizerView: UIView!
inside viewDidLoad:
里面 viewDidLoad:
preferredContentSize = CGSizeMake(0, 2000)
dispatch_after(1, dispatch_get_main_queue(), { //it needs time to render itself
label.text = NSStringFromCGSize(self.sizerView.bounds.size) //here you have MAX VALUES
}
回答by gklka
It seems, that iOS is adding an UIView-Encapsulated-Layout-Heightconstraint to your own constraints:
看来，iOS 正在向UIView-Encapsulated-Layout-Height您自己的约束添加约束：
(
"<NSLayoutConstraint:0x610000280640 V:[_UILayoutGuide:0x7f92d0513810]-(500)-[UILabel:0x7f92d040cb20'Hello World']>",
"<NSLayoutConstraint:0x610000280690 V:[UILabel:0x7f92d040cb20'Hello World']-(500)-[_UILayoutGuide:0x7f92d0515100]>",
"<_UILayoutSupportConstraint:0x6100002a2f40 V:[_UILayoutGuide:0x7f92d0513810(0)]>",
"<_UILayoutSupportConstraint:0x6100002a2ee0 V:|-(0)-[_UILayoutGuide:0x7f92d0513810] (Names: '|':UIView:0x7f92d040c810 )>",
"<_UILayoutSupportConstraint:0x6100002a3000 V:[_UILayoutGuide:0x7f92d0515100(0)]>",
"<_UILayoutSupportConstraint:0x6100002a2fa0 _UILayoutGuide:0x7f92d0515100.bottom == UIView:0x7f92d040c810.bottom>",
"<NSLayoutConstraint:0x60800009e780 'UIView-Encapsulated-Layout-Height' V:[UIView:0x7f92d040c810(628)]>"
)
This constraint forces the widget to have the maximum height. You can get it's value like this:
此约束强制小部件具有最大高度。你可以得到它的价值是这样的：
- (void)widgetPerformUpdateWithCompletionHandler:(void (^)(NCUpdateResult))completionHandler {
for (NSLayoutConstraint *constraint in self.view.constraints) {
if ([constraint.identifier isEqualToString:@"UIView-Encapsulated-Layout-Height"]) {
NSLog(@"Height: %@", @(constraint.constant));
}
}
completionHandler(NCUpdateResultNewData);
}
回答by MobileMon
To get the max height of the widgets active display mode, do this in your UIViewController:
要获得小部件活动显示模式的最大高度，请在您的 UIViewController 中执行此操作：
let context = self.extensionContext
if let context = context{
let height = context.widgetMaximumSize(for: context.widgetActiveDisplayMode).height
}
To get the max height of expanded and compact individually regardless of the current display mode, do this:
无论当前显示模式如何，要单独获得扩展和压缩的最大高度，请执行以下操作：
var context = self.extensionContext
if let context = context{
let compactHeight = context.widgetMaximumSize(for: .compact).height
let expandedHeight = context.widgetMaximumSize(for: .expanded).height
}
回答by Notive
The recommended way is to use auto-layout constraints to constrain your view's height.
推荐的方法是使用自动布局约束来约束视图的高度。
It seems the 568px is just the maxheight of your iPhone 5 and not the actual size. As far as I could figure out there is no way to get the real size.
看起来 568px 只是你的 iPhone 5 的最大高度，而不是实际大小。据我所知，无法获得真实尺寸。
