Question

我试图通过自适应弹出窗口以编程方式呈现视图（例如，在iPad上的popover，iPhone上的全屏）。为了能够解除iPhone上呈现的视图控制器，我尝试将其包装在导航控制器中，如https://stackoverflow.com/a/29956631/5061277或这里的好示例：https://github.com/shinobicontrols/iOS8-day-by-day/tree/master/21-alerts-and-popovers/AppAlert，如下所示：

import UIKit

class ViewController: UIViewController, UIPopoverPresentationControllerDelegate {

  @IBAction func handlePopoverPressed(sender: UIView) {
    let popoverVC = storyboard?.instantiateViewControllerWithIdentifier("codePopover") as! UIViewController
    popoverVC.modalPresentationStyle = .Popover
    // Present it before configuring it
    presentViewController(popoverVC, animated: true, completion: nil)
    // Now the popoverPresentationController has been created
    if let popoverController = popoverVC.popoverPresentationController {
      popoverController.sourceView = sender
      popoverController.sourceRect = sender.bounds
      popoverController.permittedArrowDirections = .Any
      popoverController.delegate = self
    }
  }

  func adaptivePresentationStyleForPresentationController(controller: UIPresentationController) -> UIModalPresentationStyle {
    // This line _IS_ reached in the debugger
    NSLog("Delagate asked for presentation style");
    return .FullScreen
  }

  func presentationController(controller: UIPresentationController, viewControllerForAdaptivePresentationStyle style: UIModalPresentationStyle) -> UIViewController? {

    // This line _IS_NOT_ reached in the debugger
    NSLog("Delegate asked for view controller");
    return UINavigationController(rootViewController: controller.presentedViewController)


  }
}

调用adaptivePresentationStyleForPresentationController委托方法时，不会调用presentationController viewControllerForAdaptivePresentationStyle委托方法。因此，无法解除iPhone上呈现的控制器。

我已经在iOS 8.1到8.4上尝试过XCode 6.4和7.0b2，无论是在模拟器中还是在设备上，在任何情况下我的委托都不会要求viewControllerForAdaptivePresentationStyle。为什么？是否有我应该看的构建设置，或者安装XCode 7是否会改变某些东西？这个确切的代码显示为在上面的链接中工作。

Answer 1

配置后需要显示它。或者使用segue使其更容易。

Answer 2

您需要添加此方法：

affectedUserIds

Answer 3

诀窍是您必须设置演示控制者的代表，然后调用 present（_：animated：completion：）; 否则，自适应演示文稿委托方法将不会被调用：

Caused by: java.lang.ClassNotFoundException: com.example.foglight.config.db.DatabaseModelNamingStrategy
    at java.net.URLClassLoader.findClass (URLClassLoader.java:471)
    at java.lang.ClassLoader.loadClass (ClassLoader.java:588)
    at java.lang.ClassLoader.loadClass (ClassLoader.java:521)
    at org.jooq.codegen.GenerationTool.loadClass (GenerationTool.java:819)
    at org.jooq.codegen.GenerationTool.run (GenerationTool.java:352)
    at org.jooq.codegen.GenerationTool.generate (GenerationTool.java:220)
    at org.jooq.codegen.maven.Plugin.execute (Plugin.java:197)

为什么不是presentationController：viewControllerForAdaptivePresentationStyle：被调用？

3 个答案: