iphone - 将工具栏和选择器作为 UIPopoverController 的 subview 时出现问题

Question

我想将工具栏和选择器 View 作为 popovercontroller 的 subview ，为此我执行以下操作，到目前为止我的选择器 View 显示完美，但就在其上方，我还想显示我的工具栏，其中有名为的按钮为此，我执行以下操作，如果您发现我正在做的事情有问题，请指导我

- (IBAction)setAlarm:(id)sender {

    UIViewController* popoverContent = [[UIViewController alloc] init];
    UIView* popoverView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 320, 344)];
    popoverView.backgroundColor = [UIColor whiteColor];


    [popoverView addSubview:toolbar];
    [popoverView addSubview:timePicker];

    timePicker.hidden = NO;
    toolbar.hidden = NO;

    popoverContent.view = popoverView;

    //resize the popover view shown
    //in the current view to the view's size
    popoverContent.contentSizeForViewInPopover = CGSizeMake(320, 216);

    //create a popover controller
    popoverController = [[UIPopoverController alloc] initWithContentViewController:popoverContent];
    timePicker.frame = popoverView.bounds;
    toolbar.frame    = popoverView.bounds;

    CGRect popoverRect ;
    popoverRect.origin.x =591;
    popoverRect.origin.y = 139;
    popoverRect.size.height = 95;
    popoverRect.size.width = 44;

    [popoverController presentPopoverFromRect:popoverRect
                                       inView:self.view
                     permittedArrowDirections:UIPopoverArrowDirectionUp
                                     animated:YES];

    //release the popover content
    [popoverView release];
    [popoverContent release];

    timePicker.hidden = NO;
    toolbar.hidden = NO;


}

Answer 1

问题在于您将展位 subview 的框架设置为相同的值:

timePicker.frame = popoverView.bounds;
toolbar.frame    = popoverView.bounds;

因此，最先添加的一个将隐藏在另一个的后面。您需要设置框架，以便工具栏正确定位在选择器上方(并调整弹出窗口的大小以留出两者的空间)。

---

类似于:

CGRect toolbarFrame = toolbar.frame;
toolbarFrame.size.width = 320;
toolbar.frame = toolbarFrame;

CGRect pickerFrame = timePicker.frame;
pickerFrame.origin.y = toolbarFrame.size.height;
pickerFrame.size.width = 320;
timePicker.frame = pickerFrame;

popoverView.frame = CGRectMake(0, 0, 320, pickerFrame.origin.y + pickerFrame.size.height);

popoverContent.contentSizeForViewInPopover = popoverView.frame.size;