Swift - 发送消息（文本,图片,文件等）给微信好友或分享到朋友圈

<key>LSApplicationQueriesSchemes</key>
<array>
    <string>weixin</string>
</array>
<key>LSRequiresIPhoneOS</key>
<true/>
<key>NSAppTransportSecurity</key>
<dict>
    <key>NSAllowsArbitraryLoads</key>
    <true/>
</dict>

import UIKit

@UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate, WXApiDelegate {

    var window: UIWindow?

    func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions:
        [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
        // 注册app
        WXApi.registerApp("wxe569f3b201ff5573")
        return true
    }
    
    //重写openURL
    func application(_ app: UIApplication, open url: URL,
                     options: [UIApplicationOpenURLOptionsKey : Any] = [:]) -> Bool {
        return WXApi.handleOpen(url, delegate: self)
    }
    
    //微信分享完毕后的回调（只有使用真实的AppID才能收到响应）
    func onResp(_ resp: BaseResp!) {
        if resp.isKind(of: SendMessageToWXResp.self) {//确保是对我们分享操作的回调
            if resp.errCode == WXSuccess.rawValue{//分享成功
                print("分享成功")
            }else if resp.errCode == WXErrCodeCommon.rawValue {//普通错误类型
                print("分享失败：普通错误类型")
            }else if resp.errCode == WXErrCodeUserCancel.rawValue {//用户点击取消并返回
                print("分享失败：用户点击取消并返回")
            }else if resp.errCode == WXErrCodeSentFail.rawValue {//发送失败
                print("分享失败：发送失败")
            }else if resp.errCode == WXErrCodeAuthDeny.rawValue {//授权失败
                print("分享失败：授权失败")
            }else if resp.errCode == WXErrCodeUnsupport.rawValue {//微信不支持
                print("分享失败：微信不支持")
            }
        }
    }

    func applicationWillResignActive(_ application: UIApplication) {
    }

    func applicationDidEnterBackground(_ application: UIApplication) {
    }

    func applicationWillEnterForeground(_ application: UIApplication) {
    }

    func applicationDidBecomeActive(_ application: UIApplication) {
    }

    func applicationWillTerminate(_ application: UIApplication) {
    }
}

import UIKit

class ViewController: UIViewController {

    //发送给好友还是朋友圈（默认好友）
    var _scene = Int32(WXSceneSession.rawValue)
    
    override func viewDidLoad() {
        super.viewDidLoad()
    }
    
    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
    }
    
    //切换发送给好友还是朋友圈
    @IBAction func changeScene(_ sender: UISegmentedControl) {
        if sender.selectedSegmentIndex == 0 {
            _scene = Int32(WXSceneSession.rawValue)
        }else{
            _scene = Int32(WXSceneTimeline.rawValue)
        }
    }
    
    //发送纯文本
    @IBAction func sendTextContent(_ sender: AnyObject) {
        let req = SendMessageToWXReq()
        req.bText = true
        req.text = "hangge.com 做最好的开发者知识平台。"
        req.scene = _scene
        WXApi.send(req)
    }
    
    //发送图片
    @IBAction func sendImageContent(_ sender: AnyObject) {
        let message =  WXMediaMessage()
        
        //发送的图片
        let filePath =  Bundle.main.path(forResource: "image", ofType: "jpg")
        let image = UIImage(contentsOfFile:filePath!)
        let imageObject =  WXImageObject()
        imageObject.imageData = UIImagePNGRepresentation(image!)
        message.mediaObject = imageObject
        
        //图片缩略图
        let width = 240.0 as CGFloat
        let height = width*image!.size.height/image!.size.width
        
        UIGraphicsBeginImageContext(CGSize(width: width, height: height))
        image!.draw(in: CGRect(x: 0, y: 0, width: width, height: height))
        message.setThumbImage(UIGraphicsGetImageFromCurrentImageContext())
        UIGraphicsEndImageContext()
        
        let req =  SendMessageToWXReq()
        req.bText = false
        req.message = message
        req.scene = _scene
        WXApi.send(req)
    }
    
    //发送链接
    @IBAction func sendLinkContent(_ sender: AnyObject) {
        let message =  WXMediaMessage()
        
        message.title = "欢迎访问 hangge.com"
        message.description = "做最好的开发者知识平台。分享各种编程开发经验。"
        message.setThumbImage(UIImage(named:"apple.png"))
        
        let ext =  WXWebpageObject()
        ext.webpageUrl = "http://hangge.com"
        message.mediaObject = ext
        
        let req =  SendMessageToWXReq()
        req.bText = false
        req.message = message
        req.scene = _scene
        WXApi.send(req)
    }
    
    //发送音乐
    @IBAction func sendMusicContent(_ sender: AnyObject) {
        let message =  WXMediaMessage()
        
        message.title = "一无所有"
        message.description = "崔健"
        message.setThumbImage(UIImage(named:"apple.png"))
        
        let ext =  WXMusicObject()
        ext.musicUrl = "http://y.qq.com/portal/song/103347_num.html"
        ext.musicDataUrl = "http://stream20.qqmusic.qq.com/32464723.mp3"
        message.mediaObject = ext
        
        let req =  SendMessageToWXReq()
        req.bText = false
        req.message = message
        req.scene = _scene
        WXApi.send(req)
    }
    
    //发送视频
    @IBAction func sendVideoContent(_ sender: AnyObject) {
        let message =  WXMediaMessage()
        message.title = "乔布斯访谈"
        message.description = "饿着肚皮，傻逼着。"
        message.setThumbImage(UIImage(named:"apple.png"))
        
        let ext =  WXVideoObject()
        ext.videoUrl = "http://v.youku.com/v_show/id_XNTUxNDY1NDY4.html"
        message.mediaObject = ext
        
        let req =  SendMessageToWXReq()
        req.bText = false
        req.message = message
        req.scene = _scene
        WXApi.send(req)
    }
    
    //发送非gif格式的表情
    @IBAction func sendNonGifContent(_ sender: AnyObject) {
        let message =  WXMediaMessage()
        message.setThumbImage(UIImage(named:"res5thumb.png"))
        
        let ext =  WXEmoticonObject()
        let filePath = Bundle.main.path(forResource: "res5", ofType: "jpg")
        let url = URL(fileURLWithPath: filePath!)
        ext.emoticonData = try! Data(contentsOf: url)
        message.mediaObject = ext
        
        let req =  SendMessageToWXReq()
        req.bText = false
        req.message = message
        req.scene = _scene
        WXApi.send(req)
    }
    
    //发送gif格式的表情
    @IBAction func sendGifContent(_ sender: AnyObject) {
        let message =  WXMediaMessage()
        message.setThumbImage(UIImage(named:"res6thumb.png"))
        
        let ext =  WXEmoticonObject()
        let filePath = Bundle.main.path(forResource: "res6", ofType: "gif")
        let url = URL(fileURLWithPath: filePath!)
        ext.emoticonData = try! Data(contentsOf: url)
        message.mediaObject = ext
        
        let req =  SendMessageToWXReq()
        req.bText = false
        req.message = message
        req.scene = _scene
        WXApi.send(req)
    }
    
    //发送文件
    @IBAction func sendFileContent(_ sender: AnyObject) {
        let message =  WXMediaMessage()
        message.title = "ML.pdf"
        message.description = "Pro CoreData"
        message.setThumbImage(UIImage(named:"apple.png"))
        
        let ext =  WXFileObject()
        ext.fileExtension = "pdf"
        let filePath = Bundle.main.path(forResource: "ML", ofType: "pdf")
        let url = URL(fileURLWithPath: filePath!)
        ext.fileData = try! Data(contentsOf: url)
        message.mediaObject = ext
        
        let req =  SendMessageToWXReq()
        req.bText = false
        req.message = message
        req.scene = _scene
        WXApi.send(req)
    }
}