問題描述
我正在使用以下代碼呈現模態:
I am presenting modal using the following code :
AddName *add = [[AddName alloc] initWithNibName:@"AddName" bundle:nil]
add.modalPresentationStyle = UIModalPresentationFormSheet;
[self presentModalView:add animated:YES];
在我工作之后，我使用以下代碼返回我的主視圖.
And After my work I use following code to go back on my main view.
[self dismissModalViewControllerAnimated:YES];
所以默認調用-viewWillAppear.
我的問題是，
在 iOS4.3 上運行良好.
但它不適用于 iOS5.
我該怎么辦?或者這是 iOS5 中的任何錯誤嗎?
What should I do ? Or Is that any bug in iOS5?
推薦答案
-viewWillAppear 只保證在 -viewWillDisappear 也被調用的地方被調用.對于 iPad 上的大多數模式窗口，情況并非如此，因為它們不會遮擋整個頁面.
-viewWillAppear is only guaranteed to be called in places where the -viewWillDisappear has also been called. For most modal windows on the iPad, this is not the case, since they don't obscure the entire page.
您的問題的解決方案將取決于您需要 -viewWillAppear 來做什么，但一般來說，您可能需要直接從您關閉模式的同一個地方撥打電話視圖控制器.
The solution to your problem will depend on what you need the -viewWillAppear for, but in general, you're likely to need to make a call directly from the same place that you dismiss the modal view controller.
一種常見的機制，尤其是在您可能在其他地方使用相同的模態視圖的情況下，是給模態視圖控制器一個委托，當視圖即將消失時調用該委托.這將使您有機會從模態窗口中獲取響應，甚至只是在委托視圖中強制重新加載數據.
One common mechanism for this, especially in cases where you might use that same modal view somewhere else, is to give the modal view controller a delegate which is called when the view is about to disappear. This will give you a chance to take the responses from the modal window, or even just force a data reload in the delegate view.
希望這會有所幫助.
這篇關于iOS 5:在 iPad 中關閉模式后不調用 -viewWillAppear的文章就介紹到這了，希望我們推薦的答案對大家有所幫助，也希望大家多多支持html5模板網！