我创建了一个 popover 类,我可以很容易地为基本的 popover 调用它——你给它数据并设置它的大小,剩下的就交给它了。
这在 iOS5 之前工作正常,现在弹出窗口打开但只有边框,根本没有空白或内容。
我已经搜索和搜索了,您可以提出的任何想法都会很棒。
@protocol BasicPickerDelegate
- (void)basicPickerItemSelected:(NSMutableDictionary *)thisDic;
@end
@interface BasicPickerController : UITableViewController {
// data
IBOutlet NSMutableArray *theData;
// stuff to set
IBOutlet int myWidth;
IBOutlet int myHeight;
IBOutlet int myPopoverNum;
// delegate
id<BasicPickerDelegate> delegate;
}
@property (nonatomic, retain) IBOutlet NSMutableArray *theData;
@property (nonatomic, assign) IBOutlet int myWidth;
@property (nonatomic, assign) IBOutlet int myHeight;
@property (nonatomic, assign) IBOutlet int myPopoverNum;
@property (nonatomic, assign) id<BasicPickerDelegate> delegate;
- (void)setSize;
- (void)checkData;
@end
那么setSize函数就是viewDidLoad
- (void)setSize {
if (!myWidth || !myHeight) {
NSLog(@"WIDTH AND HEIGHT NOT SET, SETTING DEFAULTS");
myWidth = 100;
myHeight = 100;
}
self.contentSizeForViewInPopover = CGSizeMake(myWidth, myHeight);
}
然后我这样称呼它:
- (IBAction)showBasicPopover:(id)sender {
// Show Basic Popover - can be reused
if (basicPicker != nil) {
self.basicPicker = nil;
[self.basicPicker release];
}
self.basicPicker = [[[BasicPickerController alloc] initWithStyle:UITableViewStylePlain] autorelease];
basicPicker.delegate = self;
self.basicPickerPopover = [[[UIPopoverController alloc]
initWithContentViewController:basicPicker] autorelease];
// Give popover the data it needs
NSMutableDictionary *sizeDic = [self returnPopoverSize:[sender tag]];
self.basicPicker.myHeight = [[sizeDic objectForKey:@"height"] intValue];
self.basicPicker.myWidth = [[sizeDic objectForKey:@"width"] intValue];
self.basicPicker.myPopoverNum = [sender tag];
[basicPicker viewDidLoad];
self.basicPicker.theData = [self returnPopoverData:[sender tag]];
NSLog(@"giving popover dic (%d) with %d derps", [sender tag], [self.basicPicker.theData count]);
// Set display settings and show popover
[basicPicker viewWillAppear:YES];
CGRect popoverRect = [self.view convertRect:[sender frame]
fromView:[sender superview]];
[self.basicPickerPopover presentPopoverFromRect:popoverRect
inView:self.view
permittedArrowDirections:UIPopoverArrowDirectionAny
animated:YES];
}
当我运行它时,WIDTH AND HEIGHT NOT SET, SETTIN DEFAULTS
对话出现了。由于某种原因,它没有读取它给出的值。尽管有些摆弄,但即使我可以让它在其中读取它们,也不认为它们是有效的并覆盖它们。
编辑: 所以基本上:
在 viewDidLoad 中调用 setSize 时,它不知道宽度和高度是多少。所以它设置了默认值。
如果在 viewDidLoad 中没有调用 setSize,它会出现“无大小”——即它有弹出框边框但里面根本没有内容。
当 setSize 在 viewWillAppear、viewDidAppear 或类似的东西中调用时(在 viewDidLoad 之后),它实际上并没有设置弹出框的大小。