UIPopoverController太大而UIPickerView太小 [英] UIPopoverController too large and UIPickerView too small

问题描述

我在 UIPopoverController 中显示了 UIPickerView 。 UIPickerView 的尺寸为： 320x216 。出于某种原因， UIPickerView 似乎是正确高度的~3 / 5， UIPopoverController 涵盖所有一直到屏幕的底部。

I have a UIPickerView displayed inside a UIPopoverController. The dimensions of the UIPickerView are: 320x216. For some reason, the UIPickerView seems to be ~3/5 of the proper height, and the UIPopoverController spans all the way down to the bottom of the screen.

请看下面的代码。

谢谢！

self.picker = [[[UIPickerView alloc] initWithFrame:CGRectMake(0, self.view.bounds.size.height+44, 320, 216)] autorelease];
self.picker.backgroundColor = [UIColor clearColor];
self.picker.showsSelectionIndicator = YES;
self.picker.delegate = self;
self.picker.dataSource = self;
self.picker.transform = CGAffineTransformMakeScale(-1, 1);
UIViewController *pickerController = [[UIViewController alloc] init];
[pickerController setView:self.picker];
UIPopoverController *pickerPopover = [[UIPopoverController alloc] initWithContentViewController:pickerController];
[pickerPopover presentPopoverFromBarButtonItem:sender permittedArrowDirections:UIPopoverArrowDirectionAny animated:YES];
pickerPopover.delegate = self;
self.popover = pickerPopover;
[pickerController release];
[pickerPopover release];

推荐答案

压扁选择器视图的原因似乎是是这一行：

The reason for the "squashed" picker view seems to be this line:

[pickerController setView:self.picker];

相反，将选择器视图添加为子视图：

Instead, add the picker view as a subview:

[pickerController.view addSubview:picker];

接下来，要修复弹出窗口高度，请设置 popoverContentSize 在呈现之前：

pickerPopover.popoverContentSize = picker.frame.size;

此外，修复选择器视图的框架：

Also, fix the picker view's frame from this:

CGRectMake(0, self.view.bounds.size.height+44, 320, 216)

到此：

CGRectMake(0, 0, 320, 216)

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