iOS - 社会化分享－微信分享，朋友圈分享

#import "WXApi.h"
{
/**
 *      WXSceneSession   分享到会话
 *      WXSceneTimeline  分享到朋友圈
 *      WXSceneFavorite  分享到我的收藏
 */
    enum WXScene _scene;
}

- (id)init

{
    if(self = [super init]){
        _scene = WXSceneSession;
    }
    return self;
}

-(void) changeScene:(NSInteger)scene
{
    _scene = scene;
}

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
	
    // 其他代码

    // 向微信注冊应用ID
    [WXApi registerApp:@"xxooxoxoxoxoxoxo"];
}

#pragma mark - 重写AppDelegate的handleOpenURL和openURL方法
- (BOOL)application:(UIApplication *)application handleOpenURL:(NSURL *)url
{

//假设应用还有其他社会化分享,需在此处加推断
    return [WXApi handleOpenURL:url delegate:self];
}

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

onReq 和 onResp 能够不写
-(void) onReq:(BaseReq*)req
{
    if([req isKindOfClass:[GetMessageFromWXReq class]])
    {
        // 微信请求App提供内容， 须要app提供内容后使用sendRsp返回
        NSString *strTitle = [NSString stringWithFormat:@"微信请求App提供内容"];
        NSString *strMsg   = @"微信请求App提供内容，App要调用sendResp:GetMessageFromWXResp返回给微信";
        
        UIAlertView *alert = [[UIAlertView alloc] initWithTitle:strTitle message:strMsg delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil, nil];
        alert.tag = 1000;
        [alert show];
        [alert release];
    }
    else if([req isKindOfClass:[ShowMessageFromWXReq class]])
    {
        ShowMessageFromWXReq* temp = (ShowMessageFromWXReq*)req;
        WXMediaMessage *msg = temp.message;
        
        //显示微信传过来的内容
        WXAppExtendObject *obj = msg.mediaObject;
        
        NSString *strTitle = [NSString stringWithFormat:@"微信请求App显示内容"];
        NSString *strMsg   = [NSString stringWithFormat:@"标题：%@ \n内容：%@ \n附带信息：%@ \n缩略图:%u bytes\n\n", msg.title, msg.description, obj.extInfo, msg.thumbData.length];
        
        UIAlertView *alert = [[UIAlertView alloc] initWithTitle:strTitle message:strMsg delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil, nil];
        [alert show];
        [alert release];
    }
    else if([req isKindOfClass:[LaunchFromWXReq class]])
    {
        //从微信启动App
        NSString *strTitle = [NSString stringWithFormat:@"从微信启动"];
        NSString *strMsg   = @"这是从微信启动的消息";
        
        UIAlertView *alert = [[UIAlertView alloc] initWithTitle:strTitle message:strMsg delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil, nil];
        [alert show];
        [alert release];
    }
}

-(void) onResp:(BaseResp*)resp
{
    if([resp isKindOfClass:[SendMessageToWXResp class]])
    {
        NSString *strTitle = [NSString stringWithFormat:@"发送媒体消息结果"];
        NSString *strMsg = [NSString stringWithFormat:@"errcode:%d", resp.errCode];
        
        UIAlertView *alert = [[UIAlertView alloc] initWithTitle:strTitle message:strMsg delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil, nil];
        [alert show];
        [alert release];
    }
}