我试图在点击按钮时显示一个弹出窗口。当我点击按钮时,它会在屏幕顶部显示弹出窗口,背景完全是黑色。我已经设置了位置并给了弹出的硬编码来源,但它仍然是最重要的。
以下是快照:
以下是我正在使用的代码:
UIPopoverController *popOverController = [[UIPopoverController alloc]
initWithContentViewController:myViewController];
CGRect frame = CGRectMake(20, 30, 100, 50);
popOverController.popoverLayoutMargins = UIEdgeInsetsMake(0, frame.origin.x, 0, 0);
popOverController.delegate = self;
[popOverController setBackgroundColor:[UIColor clearColor]];
[popOverController presentPopoverFromRect:frame
inView:self.view
permittedArrowDirections:UIPopoverArrowDirectionAny
animated:YES];
修改 我已经更改了我的代码并尝试了这个:
UIView *callOut = [[UIView alloc] initWithFrame:CGRectMake(view.frame.origin.x, view.frame.origin.y, 100, 50)];
callOut.backgroundColor = [UIColor whiteColor];
UILabel *callOutLable = [[UILabel alloc] initWithFrame:CGRectMake(callOut.frame.origin.x-5, callOut.frame.origin.y-5, 80, 40)];
[callOutLable setText:@"Callout"];
[callOut addSubview:callOutLable];
UIViewController *controller = [[UIViewController alloc] init];
controller.view = callOut;
UIPopoverController *popOverController = [[UIPopoverController alloc]
initWithContentViewController:controller];
popOverController.delegate = self;
CGRect frame = callOut.frame;
frame.size.height = 100;
frame.size.width = 100;
popOverController.popoverContentSize = CGSizeMake(100.0, 50.0);
[popOverController setBackgroundColor:[UIColor blueColor]];
[popOverController presentPopoverFromRect:frame
inView:self.view
permittedArrowDirections:UIPopoverArrowDirectionAny
animated:YES];
因为我正在创建一个非常小的自定义视图。现在它在指定位置显示标签,但背景视图仍为白色。
现在我在这里缺少什么?任何线索?
答案 0 :(得分:0)
TestViewController *testViewController = [[TestViewController alloc] initWithNibName:@"TestViewController" bundle:nil];
testViewController.delegate = self;
self.userDataPopover = [[UIPopoverController alloc] initWithContentViewController:testViewController];
self.userDataPopover.popoverContentSize = CGSizeMake(320.0, 400.0);
[self.userDataPopover presentPopoverFromRect:[(UIButton *)sender frame]
inView:self.view
permittedArrowDirections:UIPopoverArrowDirectionAny
animated:YES];
请参阅此示例,您应该像上面一样提供内容大小。但你直接宣布为CGRect。