UIViewController的視圖不會出現在UIPopoverController

Question

我做了一個.xib文件並添加了我的按鈕和標籤。然後，我創建了UIViewController文件，並將其作爲自定義類添加到文件的Owner類，然後將其視圖與ViewController連接起來。

然後我去了我的UIView有按鈕，當我按下它，並創建了按鈕動作，然後我在這個行動

OpenFileViewController *openfileview = [[OpenFileViewController alloc] init]; 
    //int subcount = openfileview.view.subviews.count; 
    UIPopoverController *openfilediaglog = [[UIPopoverController alloc] initWithContentViewController:openfileview]; 
    openpopoverController = openfilediaglog; 
    [openpopoverController setPopoverContentSize:CGSizeMake(320, 460)]; 
    [openpopoverController presentPopoverFromRect:CGRectMake(0, 0,400, 500) inView:self permittedArrowDirections:UIPopoverArrowDirectionAny animated:YES]; 

當我按下按鈕UIPopoverController出現，但空我寫來顯示UIPopoverController找不到問題!!!？它在哪裏 ？

Answer 1

如果您OpenFileViewController有廈門國際銀行，而不是程序化的界面，你不能使用init

// OpenFileViewController *openfileview = [[OpenFileViewController alloc] init]; 

OpenFileViewController *openfileview = [[OpenFileViewController alloc] initWithNibName:NIBNAME bundle:NSBUNDLE]; 

Answer 2

使用這個代替OpenFileViewController初始化。

OpenFileViewController *openfileview = [[OpenFileViewController alloc] initWithNibName:@"OpenFileViewController" bundle:nil];