iOS 微信分享功能简单实现

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
 [WXApi registerApp:@"wx1234567890"];//此为申请下来的key一般以wx开头
 return YES;
}

static NSString *kLinkURL = @"http://tech.qq.com/zt2012/tmtdecode/252.htm";
static NSString *kLinkTagName = @"WECHAT_TAG_JUMP_SHOWRANK";
static NSString *kLinkTitle = @"专访张小龙：产品之上的世界观";
static NSString *kLinkDescription = @"微信的平台化发展方向是否真的会让这个原本简洁的产品变得臃肿？在国际化发展方向上，微信面临的问题真的是文化差异壁垒吗？腾讯高级副总裁、微信产品负责人张小龙给出了自己的回复。";

- (IBAction)shareBtn:(UIButton *)sender {
//创建发送对象实例
SendMessageToWXReq *sendReq = [[SendMessageToWXReq alloc] init];
sendReq.bText = NO;//不使用文本信息
sendReq.scene = 1;//0 = 好友列表 1 = 朋友圈 2 = 收藏
//创建分享内容对象
WXMediaMessage *urlMessage = [WXMediaMessage message];
urlMessage.title = kLinkTitle;//分享标题
urlMessage.description = kLinkDescription;//分享描述
[urlMessage setThumbImage:[UIImage imageNamed:@"testImg"]];//分享图片,使用SDK的setThumbImage方法可压缩图片大小
//创建多媒体对象
WXWebpageObject *webObj = [WXWebpageObject object];
webObj.webpageUrl = kLinkURL;//分享链接
//完成发送对象实例
urlMessage.mediaObject = webObj;
sendReq.message = urlMessage;
//发送分享信息
[WXApi sendReq:sendReq];
}

- (BOOL)application:(UIApplication *)application handleOpenURL:(NSURL *)url
{
 return [WXApi handleOpenURL:url delegate:self];
}

- (void)onResp:(BaseResp *)resp {
//把返回的类型转换成与发送时相对于的返回类型,这里为SendMessageToWXResp
SendMessageToWXResp *sendResp = (SendMessageToWXResp *)resp;
//使用UIAlertView 显示回调信息
NSString *str = [NSString stringWithFormat:@"%d",sendResp.errCode];
UIAlertView *alertview = [[UIAlertView alloc] initWithTitle:@"回调信息" message:str delegate:self cancelButtonTitle:@"确认" otherButtonTitles:nil, nil];
[alertview show];
}