我正在开发一个iOS Xcode 7 Swift 2项目。该应用程序使用以下方法将照片发布到Facebook和Twitter：
var shareToFacebook: SLComposeViewController = SLComposeViewController(forServiceType: SLServiceTypeFacebook)
和
var shareToTwitter: SLComposeViewController = SLComposeViewController(forServiceType: SLServiceTypeTwitter)
喜欢将照片发布到这两个社交媒体是多么容易和简单。我不需要或想要它们的API。
我想为Instagram做类似和简单的事情。在不必处理Instagram API的情况下，最好的方法是什么？或者我别无选择？
我的照片data使用NSCoding保存，而不是在DocumentDirectory。我看了here进行集成，但这是为了保存在应用程序directory中的照片。
就像我已经拥有的Facebook和Twitter一样简单。
针对Swift 3进行了更新
import UIKit
import Foundation
class InstagramManager: NSObject, UIDocumentInteractionControllerDelegate {
private let kInstagramURL = "instagram://app"
private let kUTI = "com.instagram.exclusivegram"
private let kfileNameExtension = "instagram.igo"
private let kAlertViewTitle = "Error"
private let kAlertViewMessage = "Please install the Instagram application"
var documentInteractionController = UIDocumentInteractionController()
// singleton manager
class var sharedManager: InstagramManager {
struct Singleton {
static let instance = InstagramManager()
}
return Singleton.instance
}
func postImageToInstagramWithCaption(imageInstagram: UIImage, instagramCaption: String, view: UIView) {
// called to post image with caption to the instagram application
let instagramURL = NSURL(string: kInstagramURL)
if UIApplication.shared.canOpenURL(instagramURL! as URL) {
let jpgPath = (NSTemporaryDirectory() as NSString).appendingPathComponent(kfileNameExtension)
do {
try UIImageJPEGRepresentation(imageInstagram, 1.0)?.write(to: URL(fileURLWithPath: jpgPath), options: .atomic)
} catch {
print(error)
}
let rect = CGRect(x: 0, y: 0, width: 612, height: 612)
let fileURL = NSURL.fileURL(withPath: jpgPath)
documentInteractionController.url = fileURL
documentInteractionController.delegate = self
documentInteractionController.uti = kUTI
// adding caption for the image
documentInteractionController.annotation = ["InstagramCaption": instagramCaption]
documentInteractionController.presentOpenInMenu(from: rect, in: view, animated: true)
} else {
/// display some message about how it didn't work
/// Like: UIAlertController(title: kAlertViewTitle, message: kAlertViewMessage, preferredStyle: .alert)
}
}
}
然后在ViewController中你要调用它...
InstagramManager.sharedManager.postImageToInstagramWithCaption(imageInstagram: <YOUR IMAGE>, instagramCaption: shareText, view: self.view)
如果安装了Instagram，这将打开“开放”功能
我看了here并找到了解决方案：
我创建了一个NSObject：
import UIKit
import Foundation
class InstagramManager: NSObject, UIDocumentInteractionControllerDelegate {
private let kInstagramURL = "instagram://app"
private let kUTI = "com.instagram.exclusivegram"
private let kfileNameExtension = "instagram.igo"
private let kAlertViewTitle = "Error"
private let kAlertViewMessage = "Please install the Instagram application"
var documentInteractionController = UIDocumentInteractionController()
// singleton manager
class var sharedManager: InstagramManager {
struct Singleton {
static let instance = InstagramManager()
}
return Singleton.instance
}
func postImageToInstagramWithCaption(imageInstagram: UIImage, instagramCaption: String, view: UIView) {
// called to post image with caption to the instagram application
let instagramURL = NSURL(string: kInstagramURL)
if UIApplication.sharedApplication().canOpenURL(instagramURL!) {
let jpgPath = (NSTemporaryDirectory() as NSString).stringByAppendingPathComponent(kfileNameExtension)
UIImageJPEGRepresentation(imageInstagram, 1.0)!.writeToFile(jpgPath, atomically: true)
let rect = CGRectMake(0,0,612,612)
let fileURL = NSURL.fileURLWithPath(jpgPath)
documentInteractionController.URL = fileURL
documentInteractionController.delegate = self
documentInteractionController.UTI = kUTI
// adding caption for the image
documentInteractionController.annotation = ["InstagramCaption": instagramCaption]
documentInteractionController.presentOpenInMenuFromRect(rect, inView: view, animated: true)
} else {
// alert displayed when the instagram application is not available in the device
UIAlertView(title: kAlertViewTitle, message: kAlertViewMessage, delegate:nil, cancelButtonTitle:"Ok").show()
}
}
}
然后在我使用的@IBAction中：
let image = self.photoImageView.image
InstagramManager.sharedManager.postImageToInstagramWithCaption(image!, instagramCaption: "\(self.description)", view: self.view)
这将打开一个带有“open-in”风格的菜单，用户可以在Instagram中打开应用程序（如果已安装）。
这是一个可重复使用的快速4+类。使用Xcode 10.1。
import UIKit
import Foundation
class InstagramHelper: NSObject, UIDocumentInteractionControllerDelegate {
private let kInstagramURL = "instagram://den3079"
private let kUTI = "com.instagram.exclusivegram"
private let kfileNameExtension = "instagram.igo"
private let kAlertViewTitle = "Error"
private let kAlertViewMessage = "Please install the Instagram application"
var documentInteractionController = UIDocumentInteractionController()
// singleton manager
class var sharedManager: InstagramHelper {
struct Singleton {
static let instance = InstagramHelper()
}
return Singleton.instance
}
func postImageToInstagramWithCaption(imageInstagram: UIImage, instagramCaption: String, controller: UIViewController) {
// called to post image with caption to the instagram application
let instagramURL = URL(string: kInstagramURL)
DispatchQueue.main.async {
if UIApplication.shared.canOpenURL(instagramURL!) {
let jpgPath = (NSTemporaryDirectory() as NSString).appendingPathComponent(self.kfileNameExtension)
if let jpegData = UIImageJPEGRepresentation(imageInstagram, 1.0) {
do {
try jpegData.write(to: URL(fileURLWithPath: jpgPath), options: .atomicWrite)
} catch {
print("write image failed")
}
}else {
let jpegData = UIImagePNGRepresentation(imageInstagram)
do {
try jpegData?.write(to: URL(fileURLWithPath: jpgPath), options: .atomicWrite)
} catch {
print("write image failed")
}
}
let fileURL = NSURL.fileURL(withPath: jpgPath)
self.documentInteractionController.url = fileURL
self.documentInteractionController.delegate = self
self.documentInteractionController.uti = self.kUTI
// adding caption for the image
self.documentInteractionController.annotation = ["InstagramCaption": instagramCaption]
self.documentInteractionController.presentOpenInMenu(from: controller.view.frame, in: controller.view, animated: true)
} else {
// alert displayed when the instagram application is not available in the device
self.showAlert("", message: self.kAlertViewMessage, controller: controller)
}
}
}
func showAlert(_ title: String, message: String, controller : UIViewController){
let alert = UIAlertController(title: title, message: message, preferredStyle: UIAlertControllerStyle.alert)
let okAction = UIAlertAction(title: "OK", style: UIAlertActionStyle.default, handler: { action -> Void in
//Just dismiss the action sheet
let selector: Selector = NSSelectorFromString("alertOkButtonHandler")
if controller.responds(to: selector){
_ = controller.perform(selector)
}
})
alert.addAction(okAction)
controller.present(alert, animated: true, completion: nil)
}}
并在ViewController类中使用此函数。
InstagramHelper.sharedManager.postImageToInstagramWithCaption(imageInstagram: img!, instagramCaption: "www.google.com", controller: self)