弹出窗口中的UIReferenceLibraryViewController [英] UIReferenceLibraryViewController in a popover

问题描述

如果搜索到某个单词，我会使用这部分代码来提取字典：

I have this portion of code to pull up the dictionary if a word is searched:

- (IBAction)searchButtonPressed:(id)sender
{
    NSString *searchTerm = self.searchTextField.text;

    if([UIReferenceLibraryViewController dictionaryHasDefinitionForTerm:searchTerm])
    {
        UIReferenceLibraryViewController *referenceLibraryVC = [[UIReferenceLibraryViewController alloc] initWithTerm:searchTerm];
        [self presentModalViewController:referenceLibraryVC animated:NO];
    }
    else
    {
        UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Word not found" message:@"no definition" delegate:nil cancelButtonTitle:@"OK" otherButtonTitles:nil, nil];
        [alert show];
    }
}

然而，它似乎只适用于主视图在xib中，涵盖了更加迷人的iPad屏幕。我怎样才能获得它只在子视图中打开，只是屏幕的一部分？

however, it only seems to work on the main view in the xib and covers the entier iPad screen. How can I get it so that it only opens up in a subview, just a portion of the screen?

推荐答案

使用 UIPopoverController ，就像它在本机应用程序中使用一样。

Use a UIPopoverController, like it is used in native applications.

self.popover = [[UIPopoverController alloc] initWithContentViewController:referenceLibraryVC];
[self.popover presentPopoverFromRect:[sender frame] inView:[sender superview] permittedArrowDirections:UIPopoverArrowDirectionAny animated:YES];

您将需要保留弹出控制器，直到它被解除。设置代理，你可以在它被解雇时收听，这样你就可以释放它。

You will need to retain the popover controller until it is dismissed. Set the delegate and you can listen when it is dismissed so you can release it.

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