iOS集成微信分享

一、微信分享，首先利用CocoaPods,导入支付宝SDK

pod 'WechatOpenSDK'

二、 创建微信分享管理类 WechatShareManager

// WechatShareManager.h
#import <Foundation/Foundation.h>
#import <WXApi.h>

// 分享类型枚举
typedef NS_ENUM(NSInteger, WechatShareType) {
    WechatShareTypeFriends,  // 好友
    WechatShareTypeTimeline,  // 朋友圈
};

// 分享后返回码枚举
typedef NS_ENUM(int, WechatShareStatusCode){
    WechatShareSuccess     = 0, // 分享成功
    WechatShareCancleShare = 1,// 取消分享
    WechatShareFailed      = 2   // 分享失败
};

@interface WechatShareManager : NSObject

// WechatShareManager是微信分享管理类


+ (id)shareInstance;

+ (BOOL)handleOpenUrl:(NSURL *)url;

+ (void)hangleWechatShareWith:(SendMessageToWXReq *)req;

@end

// WechatShareManager.m
#import "WechatShareManager.h"
#import <WXApi.h>

@interface WechatShareManager()<WXApiDelegate>

@end

@implementation WechatShareManager

+ (id)shareInstance {
    static WechatShareManager *weChatShareInstance = nil;
    static dispatch_once_t onceToken;
    dispatch_once(&onceToken, ^{
        weChatShareInstance = [[WechatShareManager alloc] init];
    });
    return weChatShareInstance;
}

+ (BOOL)handleOpenUrl:(NSURL *)url {
    return [WXApi handleOpenURL:url delegate:[WechatShareManager shareInstance]];
}

+ (void)hangleWechatShareWith:(SendMessageToWXReq *)req {
    

    [WXApi sendReq:req completion:^(BOOL success) {
        //
    }];
}

#pragma mark - 微信分享回调

- (void)onResp:(BaseResp *)resp {
    if ([resp isKindOfClass:[SendMessageToWXResp class]]) {
        /*
         enum  WXErrCode {
         WXSuccess           = 0,    < 成功
         WXErrCodeCommon     = -1,  < 普通错误类型
         WXErrCodeUserCancel = -2,   < 用户点击取消并返回
         WXErrCodeSentFail   = -3,   < 发送失败
         WXErrCodeAuthDeny   = -4,   < 授权失败
         WXErrCodeUnsupport  = -5,   < 微信不支持
         };
         */
        SendMessageToWXResp *response = (SendMessageToWXResp *)resp;
        switch (response.errCode) {
            case WXSuccess: {
                NSLog(@"微信分享成功");
                [[NSNotificationCenter defaultCenter] postNotificationName:UserNotificationWechatShareSuccess
                                                                    object:nil
                                                                  userInfo:nil];
                break;
            }
            case WXErrCodeCommon: {
                NSLog(@"微信分享异常");
                break;
            }
            case WXErrCodeUserCancel: {
                NSLog(@"微信分享取消");
                break;
            }
            case WXErrCodeSentFail: {
                NSLog(@"微信分享失败");
                [[NSNotificationCenter defaultCenter] postNotificationName:UserNotificationWechatShareFail
                                                                    object:nil
                                                                  userInfo:nil];
                break;
            }
            case WXErrCodeAuthDeny: {
                NSLog(@"微信分享授权失败");
                break;
            }
            case WXErrCodeUnsupport: {
                NSLog(@"微信分享版本暂不支持");
                break;
            }
            default: {
                break;
            }
        }
    }
}

三、微信分享的逻辑处理

case ShareButtonTypeWechat:{
            // 分享到微信
            WXMediaMessage *message = [WXMediaMessage message];
            message.title = self.shareTitle;
            message.description = self.shareDetails == nil ? @"":self.shareDetails;
            [message setThumbImage:self.shareCoverImageView];
            if (self.shareImage != nil) {
                WXImageObject *imageObject = [WXImageObject object];
                imageObject.imageData = self.shareImage;
                message.mediaObject = imageObject;
            } else {
                WXWebpageObject *webpageObject = [WXWebpageObject object];
                webpageObject.webpageUrl = self.shareURL;
                message.mediaObject = webpageObject;
            }
            SendMessageToWXReq *req = [[SendMessageToWXReq alloc] init];
            req.bText = NO;
            req.message = message;
            req.scene = WXSceneSession;
            [WechatShareManager hangleWechatShareWith:req];
            break;
        }

四、微信分享调用

- (void)addNotionAction {
   [[NSNotificationCenter defaultCenter] addObserver:self
                                            selector:@selector(wechatShareSuccessAction)
                                                name:UserNotificationWechatShareSuccess
                                              object:nil];
   [[NSNotificationCenter defaultCenter] addObserver:self
                                            selector:@selector(wechatShareFailAction)
                                                name:UserNotificationWechatShareFail
                                              object:nil];
}
- (void)shareButtonClick {
   ShareView *shareView = [[ShareView alloc] initWithFrame:[UIScreen mainScreen].bounds];
   shareView.superViewController = self;
   shareView.shareTitle = @"大家哈";
   shareView.shareDetails = @"000000000000";
   shareView.shareCoverImageView = KImage(@"mine_people_boy");
   shareView.shareURL = @"https://www.baidu.com";
   shareView.shareImage = UIImagePNGRepresentation(KImage(@"mine_people_girl"));
   [self.view addSubview:shareView];
   [shareView showShareViewAction];
}
- (void)wechatShareSuccessAction {
   [self makeToast:@"分享成功" duration:0.3 position:CSToastPositionCenter];
   [self dismissShareViewAction];
}

- (void)wechatShareFailAction {
   [self makeToast:@"分享失败" duration:0.3 position:CSToastPositionCenter];
   [self dismissShareViewAction];
}

五、注意的细节

• APPDelegate.m进行注册和设置回调

// 1. APPDelegate.m里面注册
    BOOL isSuccess = [WXApi registerApp:WeiXinPayKey universalLink:WeiXinLinks];
// 2. 设置分享后的回调
- (BOOL)application:(UIApplication *)app openURL:(NSURL *)url options:(NSDictionary<UIApplicationOpenURLOptionsKey,id> *)options {
  if ([url.absoluteString containsString:[NSString stringWithFormat:@"%@://platformId=wechat", WeiXinPayKey]]) {
            return [WechatShareManager handleOpenUrl:url];
    }
    return YES;
}
// 3.适配iOS13
- (BOOL)application:(UIApplication *)application continueUserActivity:(NSUserActivity *)userActivity restorationHandler:(void (^)(NSArray<id<UIUserActivityRestoring>> * _Nullable))restorationHandler {
    NSURL *continueURL = userActivity.webpageURL;
    NSString *relativePath = continueURL.relativePath;
    if ([relativePath containsString:WeiXinPayKey] && [relativePath containsString:@"pay"]) {
        return [WXApi handleOpenUniversalLink:userActivity delegate:[WechatManager shareInstance]];
    } else if ([relativePath containsString:[NSString stringWithFormat:@"%@", WeiXinPayKey]]) {
        return [WXApi handleOpenUniversalLink:userActivity delegate:[WechatShareManager shareInstance]];
    }
    return YES;
}

• 配置URL schemes等等，需要配置的内容大致和微信支付的相同具体请看我的另一篇关于微信支付的文章:
  https://www.jianshu.com/p/87d8161e89f7