如何在iOS中創建自定義UIActivity？

Question

如何在iOS中創建自定義UIActivity？

我想要這個的原因是在我的一個應用程序中添加一個Review App按鈕，將用戶帶到App Store中的Review部分。我如何創建這樣的自定義UIActivity？

Answer 1

首先，創建文件。我選擇了名字礦ActivityViewCustomActivity

製作ActivityViewCustomActivity.h是這樣的：

#import <UIKit/UIKit.h> 

@interface ActivityViewCustomActivity : UIActivity 

@end 

讓ActivityViewCustomActivity.m是這樣的：

#import "ActivityViewCustomActivity.h" 

@implementation ActivityViewCustomActivity 

- (NSString *)activityType 
{ 
    return @"yourappname.Review.App"; 
} 

- (NSString *)activityTitle 
{ 
    return @"Review App"; 
} 

- (UIImage *)activityImage 
{ 
    // Note: These images need to have a transparent background and I recommend these sizes: 
    // iPadShare@2x should be 126 px, iPadShare should be 53 px, iPhoneShare@2x should be 100 
    // px, and iPhoneShare should be 50 px. I found these sizes to work for what I was making. 

    if (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad) 
    { 
     return [UIImage imageNamed:@"iPadShare.png"]; 
    } 
    else 
    { 
     return [UIImage imageNamed:@"iPhoneShare.png"]; 
    } 
} 

- (BOOL)canPerformWithActivityItems:(NSArray *)activityItems 
{ 
    NSLog(@"%s", __FUNCTION__); 
    return YES; 
} 

- (void)prepareWithActivityItems:(NSArray *)activityItems 
{ 
    NSLog(@"%s",__FUNCTION__); 
} 

- (UIViewController *)activityViewController 
{ 
    NSLog(@"%s",__FUNCTION__); 
    return nil; 
} 

- (void)performActivity 
{ 
    // This is where you can do anything you want, and is the whole reason for creating a custom 
    // UIActivity 

    [[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"itms-apps://ax.itunes.apple.com/WebObjects/MZStore.woa/wa/viewContentsUserReviews?type=Purple+Software&id=yourappid"]]; 
    [self activityDidFinish:YES]; 
} 

@end 

這就是我的形象看起來像： 這裏是我製作的.PSD： - 惡意鏈接刪除 - 這裏是原始的250 px .p​​ng http://i.imgur.com/pGWVj.png

在您的視圖控制器

現在做到這一點：

#import "ActivityViewCustomActivity.h" 

而現在，無論你想顯示你的UIActivityViewController：

NSString *textItem = @"Check out the yourAppNameHere app: itunes http link to your app here"; 
    UIImage *imageToShare = [UIImage imageNamed:@"anyImage.png"]; 

    NSArray *items = [NSArray arrayWithObjects:textItem,imageToShare,nil]; 

    ActivityViewCustomActivity *aVCA = [[ActivityViewCustomActivity alloc]init]; 

    UIActivityViewController *activityVC = 
    [[UIActivityViewController alloc] initWithActivityItems:items 
                applicationActivities:[NSArray arrayWithObject:aVCA]]; 

    activityVC.excludedActivityTypes = @[UIActivityTypePostToWeibo, UIActivityTypeAssignToContact, UIActivityTypePrint, UIActivityTypeCopyToPasteboard, UIActivityTypeSaveToCameraRoll]; 

    activityVC.completionHandler = ^(NSString *activityType, BOOL completed) 
    { 
     NSLog(@"ActivityType: %@", activityType); 
     NSLog(@"Completed: %i", completed); 
    }; 

    if (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad) 
    { 
     self.popoverController = [[UIPopoverController alloc] initWithContentViewController:activityVC]; 

     CGRect rect = [[UIScreen mainScreen] bounds]; 

     [self.popoverController 
        presentPopoverFromRect:rect inView:self.view 
        permittedArrowDirections:0 
        animated:YES]; 
    } 
    else 
    { 
     [self presentViewController:activityVC animated:YES completion:nil]; 
    } 

Answer 2

這裏是我的斯威夫特版本 - 我需要多個自定義操作所以我創建了這個類。無需代表或議定書。

1.添加自定義類

class ActivityViewCustomActivity: UIActivity { 

    var customActivityType = "" 
    var activityName = "" 
    var activityImageName = "" 
    var customActionWhenTapped:((Void)-> Void)! 

    init(title: String, imageName:String, performAction: (() ->())) { 
     self.activityName = title 
     self.activityImageName = imageName 
     self.customActivityType = "Action \(title)" 
     self.customActionWhenTapped = performAction 
     super.init() 
    } 

    override func activityType() -> String? { 
     return customActivityType 
    } 

    override func activityTitle() -> String? { 
     return activityName 
    } 

    override func activityImage() -> UIImage? { 
     return UIImage(named: activityImageName) 
    } 

    override func canPerformWithActivityItems(activityItems: [AnyObject]) -> Bool { 
     return true 
    } 

    override func prepareWithActivityItems(activityItems: [AnyObject]) { 
     // nothing to prepare 
    } 

    override func activityViewController() -> UIViewController? { 
     return nil 
    } 

    override func performActivity() { 
     customActionWhenTapped() 
    } 
} 

2使用您的視圖控制器

我它連接到的UIBarButtonItem，它調用下面

@IBAction func actionButtonPressed(sender: UIBarButtonItem) { 

    var sharingItems = [AnyObject]() // nothing to share... 

    let myCustomActivity = ActivityViewCustomActivity(title: "Mark Selected", imageName: "removePin") { 
     println("Do something") 
    } 

    let anotherCustomActivity = ActivityViewCustomActivity(title: "Reset All", imageName: "reload") { 
     println("Do something else") 
    } 

    let activityViewController = UIActivityViewController(activityItems:sharingItems, applicationActivities:[myCustomActivity, anotherCustomActivity]) 

    activityViewController.excludedActivityTypes = [UIActivityTypeMail, UIActivityTypeAirDrop, UIActivityTypeMessage, UIActivityTypeAssignToContact, UIActivityTypePostToFacebook, UIActivityTypePrint, UIActivityTypeCopyToPasteboard, UIActivityTypeSaveToCameraRoll] 

    activityViewController.popoverPresentationController?.barButtonItem = sender 

    self.presentViewController(activityViewController, animated: true, completion: nil) 
} 

Answer 3

下面是使用-activityViewCon創建電子郵件編輯器界面的示例UIActivity的troller方法。這顯示瞭如何搭建一個UIKit viewController或者你自己定製的viewController，無論你選擇什麼目的。它取代了-performActivity方法。

#import <MessageUI/MessageUI.h> 
#import <UIKit/UIKit.h> 

@interface EPSuggestionsActivity : UIActivity <MFMailComposeViewControllerDelegate> 

@end 

@implementation EPSuggestionsActivity 

.... 

- (UIViewController *)activityViewController{ 

    MFMailComposeViewController *picker = [[MFMailComposeViewController alloc] init]; 
    picker.mailComposeDelegate = self; 

    NSString *emailAddress = @"developer@apple.com"; 
    NSArray *toRecipients = @[emailAddress]; 
    [picker setToRecipients:toRecipients]; 
    [picker setSubject:@"Suggestions"]; 

    return picker; 
} 

#pragma mark - MFMailComposeViewControllerDelegate Method 

- (void)mailComposeController:(MFMailComposeViewController*)controller didFinishWithResult:(MFMailComposeResult)result error:(NSError*)error { 

    [self activityDidFinish:YES]; // Forces the activityViewController to be dismissed 
} 

@end 

請注意，在用戶關閉電子郵件界面後，將從郵件編輯器代理調用-activityDidFinish。這是使UIActivityViewController接口消失所必需的。如果你編寫自己的viewController，它將需要一個委託方法，它在完成時調用，你將不得不使UIActivity的子類成爲委託。

Answer 4

我斯威夫特3實現基於關DogCoffee年代：

class ActivityViewCustomActivity: UIActivity { 

    // MARK: Properties 

    var customActivityType: UIActivityType 
    var activityName: String 
    var activityImageName: String 
    var customActionWhenTapped:() -> Void 


    // MARK: Initializer 

    init(title: String, imageName: String, performAction: @escaping() -> Void) { 
     self.activityName = title 
     self.activityImageName = imageName 
     self.customActivityType = UIActivityType(rawValue: "Action \(title)") 
     self.customActionWhenTapped = performAction 
     super.init() 
    } 



    // MARK: Overrides 

    override var activityType: UIActivityType? { 
     return customActivityType 
    } 



    override var activityTitle: String? { 
     return activityName 
    } 



    override class var activityCategory: UIActivityCategory { 
     return .share 
    } 



    override var activityImage: UIImage? { 
     return UIImage(named: activityImageName) 
    } 



    override func canPerform(withActivityItems activityItems: [Any]) -> Bool { 
     return true 
    } 



    override func prepare(withActivityItems activityItems: [Any]) { 
     // Nothing to prepare 
    } 



    override func perform() { 
     customActionWhenTapped() 
    } 
}