iphone - 为什么 UIPopoverController 这么高大上？

Question

我有以下代码可以打开一个 320px x 320px 的 UIPopoverController，但由于某种原因，popover 比它应该的高度高得多 - 大约是我指定高度 (320px) 的两倍。

出了什么问题？

    colorPicker = [[RSColorPickerView alloc] initWithFrame:CGRectMake(20.0, 20.0, 320.0, 320.0)];
    [colorPicker setDelegate:self];
    [colorPicker setBrightness:1.0];
    [colorPicker setCropToCircle:YES];
    [colorPicker setBrightness:1.0];
    [colorPicker setBackgroundColor:[UIColor clearColor]];

    UIColor * aColor = [UIColor colorWithRed:0.803 green:0.4 blue:0.144 alpha:1];
    [colorPicker setSelectionColor:aColor];

    UIView *newview = [[UIView alloc] initWithFrame:CGRectMake(20.0, 20.0, 320.0, 320.0)];
    [newview addSubview:colorPicker];

    UIViewController *newviewcontroller = [[UIViewController alloc] init];
    [newviewcontroller setView:newview];

    UIPopoverController *newpopover =
    [[UIPopoverController alloc] initWithContentViewController:newviewcontroller];

    newpopover.delegate = self;
    [self.colourController setPopoverContentSize:CGSizeMake(320, 320)];
    self.colourController = newpopover;

    [self.colourController presentPopoverFromRect:CGRectMake(149, 540, 1, 1) inView:self.view permittedArrowDirections:UIPopoverArrowDirectionLeft animated:YES];

Answer 1

您需要在弹出窗口中显示的 View Controller 上设置 popoverContentSize。您将其设置在错误的 View Controller 上。

newpopover.delegate = self;
self.colourController = newpopover;
[self.colourController setPopoverContentSize:CGSizeMake(320, 320)];

最后两行的顺序不对。