UIPopover我如何与这样的按钮的酥料饼？(UIPopover How do I make a

我想知道我怎么可以创建这样的按钮的酥料饼。

回答：

UIActionSheet * actionSheet = [[UIActionSheet alloc] initWithTitle: nil 
                                                          delegate: self
                                                 cancelButtonTitle: nil 
                                            destructiveButtonTitle: nil 
                                                 otherButtonTitles: @"Take Photo",
                                                                    @"Choose Existing Photo", nil];

[actionSheet showFromRect: button.frame inView: button.superview animated: YES];

别的地方在你的授权对象类...

-(void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex {
    if (buttonIndex == 0) {
         // take photo...
    } 
    else if (buttonIndex == 1) {
         // choose existing photo...
    }
}

Answer 1:

这是一个UIActionSheet 。 在iPhone上，它从底部动画英寸 在iPad上它出现在一个酥料饼。

假设你在按一下按钮，这样做：

UIActionSheet * actionSheet = [[UIActionSheet alloc] initWithTitle: nil 
                                                          delegate: self
                                                 cancelButtonTitle: nil 
                                            destructiveButtonTitle: nil 
                                                 otherButtonTitles: @"Take Photo",
                                                                    @"Choose Existing Photo", nil];

[actionSheet showFromRect: button.frame inView: button.superview animated: YES];

---

在iOS8上的+，您应该使用新的UIAlertController类：

UIAlertController * alertController = [UIAlertController alertControllerWithTitle: nil
                                                                          message: nil
                                                                   preferredStyle: UIAlertControllerStyleActionSheet];
[alertController addAction: [UIAlertAction actionWithTitle: @"Take Photo" style: UIAlertActionStyleDefault handler:^(UIAlertAction *action) {
    // Handle Take Photo here
}]];
[alertController addAction: [UIAlertAction actionWithTitle: @"Choose Existing Photo" style: UIAlertActionStyleDefault handler:^(UIAlertAction *action) {
    // Handle Choose Existing Photo here
}]];

alertController.modalPresentationStyle = UIModalPresentationPopover;

UIPopoverPresentationController * popover = alertController.popoverPresentationController;
popover.permittedArrowDirections = UIPopoverArrowDirectionUp;
popover.sourceView = sender;
popover.sourceRect = sender.bounds;

[self presentViewController: alertController animated: YES completion: nil];

---

或者斯威夫特

let alertController = UIAlertController(title: nil, message: nil, preferredStyle: .ActionSheet)
alertController.addAction(UIAlertAction(title: "Take Photo", style: .Default, handler: { alertAction in
    // Handle Take Photo here
    }))
alertController.addAction(UIAlertAction(title: "Choose Existing Photo", style: .Default, handler: { alertAction in
    // Handle Choose Existing Photo
    }))
alertController.modalPresentationStyle = .Popover

let popover = alertController.popoverPresentationController!
popover.permittedArrowDirections = .Up
popover.sourceView = sender
popover.sourceRect = sender.bounds

presentViewController(alertController, animated: true, completion: nil)

Answer 2:

类似于其他反应，但这样很容易比较来实现。

让你的类使用UIActionSheetDelegate。

例：

@interface ExampleViewController : UIViewController <UIActionSheetDelegate>

然后添加到您的ExampleViewController.mm/m

- (void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex  { //Get the name of the current pressed button 
NSString *buttonTitle = [actionSheet buttonTitleAtIndex:buttonIndex]; 
if  ([buttonTitle isEqualToString:@"Remove"]) {
    NSLog(@"Remove this actionSheet"); } 
if ([buttonTitle isEqualToString:@"Button 1"]) {
    NSLog(@"Button 1 pressed"); } 
if ([buttonTitle isEqualToString:@"Button 2"]) {
    NSLog(@"Button 2 pressed"); }
if ([buttonTitle isEqualToString:@"Button 3"]) {
    NSLog(@"Button 3 pressed"); } 
if ([buttonTitle isEqualToString:@"Cancel"]) {
    NSLog(@"Cancel clicked (anywhere away from it)"); } }

现在，在按下的按钮事件或者/当你想这个弹出拨打以下几点：

    - (IBAction)aButtonPressed:(id)sender {
     NSString *actionSheetTitle = @"Action Sheet"; // Title 
     NSString *destroyTitle = @"Destroy"; // Button titles
     NSString *button1 = @"Button 1"; 
     NSString *button2 = @"Button 2";
     NSString *button3 = @"Button 3";
     NSString *cancelTitle = @"Cancel"; 
    UIActionSheet *actionSheet = [[UIActionSheet alloc]
                                  initWithTitle:actionSheetTitle
                                   delegate:self
                                   cancelButtonTitle:cancelTitle
                                   destructiveButtonTitle:destroyTitle
                                   otherButtonTitles:button1, button2, button3, nil]; [actionSheet showInView:self.view];
}

而关于这个@的更多信息： http://developer.apple.com/library/ios/#documentation/uikit/reference/UIActionSheet_Class/Reference/Reference.html

文章来源: UIPopover How do I make a popover with buttons like this?