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Swift - 发送消息（文本,图片,文件等）给微信好友或分享到朋友圈

作者：hangge | 2015-06-09 10:08
通过调用微信提供的API接口，我们可以很方便的在应用中发送消息给微信好友，或者分享到朋友圈。在微信开发平台（https://open.weixin.qq.com）里，提供了详细的说明文档和样例。但由于提供的样例是使用Objective-C写的，所以这边我写了个Swift版的样例。

1，实现的功能
（1）可以发送各种类型的消息给好友，也可以分享到朋友圈
（2）发送的内容类型包括：纯文本，图片，链接，音乐，视频，gif表情，非gif表情，文件

2，效果图如下
  
  

3，注意事项：
（1）该样例必须连接手机进行真机调试
（2）还需要到微信开发平台注册应用id，下面代码里会用到（如果不注册，随便起个id来调试也没什么问题，就是收到消息下方会显示“未审核应用”，同时发送完毕以后程序这边接收不到回调响应。现在微信策略调整，必须使用注册的AppID才可以发送消息。否则会报“由于bad_param，无法分享到微信”错误。）

4，详细步骤
（1）首先把微信SDK资源库拖入到项目中来（整个SDK文件夹）

（2）建立桥接文件bridge.h，并引入
#import "WechatAuthSDK.h"
#import "WXApi.h"
#import "WXApiObject.h"


（3）导入有关的类库：
      CoreTelephony.framework，SystemConfiguration.framework，libc++.tbd，libz.tbd，libsqlite3.0.tbd。

（4）自iOS 9起，系统策略更新，限制了http协议的访问，此外应用需要在“Info.plist”中将要使用的URL Schemes列为白名单。
在“Info.plist”里增加如下代码：
<key>LSApplicationQueriesSchemes</key>
<array>
    <string>weixin</string>
</array>
<key>LSRequiresIPhoneOS</key>
<true/>
<key>NSAppTransportSecurity</key>
<dict>
    <key>NSAllowsArbitraryLoads</key>
    <true/>
</dict>

（5）在 “info” -> “URL Types”中，新增一个 URL Schemes。新的 Schemes 命名是便是你注册的 AppID。（URL Schemes 的配置是为了让你跳转到微信发送消息后，还能跳回原来的App上。）

（6）编写代码

--- AppDelegate.swift --- 
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) {
    }
}
--- ViewController.swift --- 
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)
    }
}

5，源码下载：
WeiXinShare.zip （2015-06-09）
WeiXinShare2.zip (2015-12-11)
WeiXinShare2.zip (2016-07-30 )
WeiXinShare2.zip (2016-08-17 Swift2)
hangge_757.zip（2016-09-22 最新版 Swift3）
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