如何在iOS中创建自定义UIActivity？

如何在iOS中创建自定义

UIActivity

---

我希望这样做的原因是在我的一个应用程序中添加一个Review应用程序按钮，将用户带到应用程序商店中的Review部分。如何创建这样一个自定义的

UIActivity

？

首先，创建文件。我选择将我的活动命名为ViewCustomActivity

使ActivityViewCustomActivity.h如下所示：

#import <UIKit/UIKit.h>

@interface ActivityViewCustomActivity : UIActivity

@end

#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

这就是我的形象： 这是我制作的.PSD:--恶意链接已删除-- 这是原始的250 px.png

现在，在视图控制器中执行以下操作：

#import "ActivityViewCustomActivity.h"

现在，无论您想在何处显示您的

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];
   }

---

这是我的Swift版本-我需要多个自定义操作，所以我创建了这个类。不需要代理或协议

1。添加自定义类

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在视图控制器中使用

我把它附在一个维吾尔布托教派上，它称之为

@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)
}

---

下面是一个使用UIActivity的-activityViewController方法设置电子邮件编写器界面的示例。这显示了如何为您选择的任何用途安装UIKit viewController或您自己的自定义viewController。它取代了性能法

#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

#导入
#进口
@接口建议活动：UIActivity
@结束
@实施建议活动
....
-（UIViewController*）活动视图控制器{
MFMailComposeViewController*选择器=[[MFMailComposeViewController alloc]init]；
picker.mailComposeDelegate=self；
NSString*电子邮件地址=@“developer@apple.com";
NSArray*toRecipients=@[emailAddress]；
[picker setToRecipients:toRecipients]；
[picker setSubject:@“建议”]；
回程选择器；
}
#pragma-mark-MFMailComposeViewControllerDelegate方法
-（void）mailComposeController:（MFMailComposeViewController*）控制器未完成结果：（MFMailComposeResult）结果错误：（NSError*）错误{
[self-activityDidFinish:YES]；//强制解除activityViewController
}
@结束

---

请注意，-activityDidFinish是在用户解除电子邮件界面后从mail composer委托调用的。这是使UIActivityViewController界面消失所必需的。如果您编写自己的viewController，它将需要一个完成时调用的委托方法，并且您必须使UIActivity的子类成为委托。

MySwift 3基于DogCoffee的实现：

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()
    }
}

---

根据苹果iPhone和iPodtouch手册，图像不应大于43×43点（对于带有视网膜显示器的设备，这相当于86×86像素）。对于iPad，图像不应大于55×55点（对于带有视网膜显示器的iPad，这相当于110×110像素）。苹果手册并非适用于所有情况。我选择的图像大小是经过反复试验确定的，完全符合我的需要。你能再次上传你的文件吗？看起来它们不再可用了。@DrMickeyLauer我在这里重新加载了.PSD文件：建议的图像大小在iOS 7中已更改-有关UIActivity，请参阅文档。对于iPhone和iPod touch，iOS 7上的图像应该是60乘60分。对于早期版本：不大于43乘以43点。对于iPad，图像应该是76乘76分；在早期版本上：不大于60乘60点。在带有视网膜显示器的设备上，每个方向的像素数都是原来的两倍。真糟糕，苹果默认没有这个功能。