iOS：极光推送控制器跳转

-(void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo{

    // Required,For systems with less than or equal to iOS6
    [JPUSHService handleRemoteNotification:userInfo];
}

-(void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo fetchCompletionHandler:(void (^)(UIBackgroundFetchResult))completionHandler{

    // IOS 7 Support Required
    [JPUSHService handleRemoteNotification:userInfo];
    if (completionHandler) {
        completionHandler(UIBackgroundFetchResultNewData);
    }

    //消息提示数字
    self.badge = userInfo[@"aps"][@"badge"];
    //取得Extras字段内容
    NSString *customizeValue = [userInfo valueForKey:@"customizeExtras"]; //服务端中Extras字段，key是自己定义的,用来判断跳转的是极光推送的消息控制器
    
    // 启动程序,跳转到极光推送消息的控制器
    if ([customizeValue isEqualToString:@"Jpush"]) {
        KJTabViewController *rootVC = (KJTabViewController *)[UIApplication sharedApplication].keyWindow.rootViewController;
        rootVC.selectedIndex = 4;
        KJNavgationController *navc = rootVC.viewControllers[4];
        self.mineVC = navc.viewControllers[0];
        KJNewFriendController *newVC = [[KJNewFriendController alloc]init];
        [self.mineVC.navigationController pushViewController:newVC animated:YES];
        [self CancelBadgeValue];
        application.applicationIconBadgeNumber -= [self.badge integerValue];
    }
    else{ // 启动程序,跳转到环信推送消息的控制器
        KJTabViewController *rootVC = (KJTabViewController *)[UIApplication sharedApplication].keyWindow.rootViewController;
        rootVC.selectedIndex = 1;
    }
    
    
    // 应用正处理前台状态下，不会收到极光推送消息，因此在此处需要额外处理一下
    if (application.applicationState == UIApplicationStateActive) {
        UIAlertView *alert = [[UIAlertView alloc]
                              initWithTitle:@"您有一条推送消息"
                              message:userInfo[@"aps"][@"alert"]
                              delegate:self
                              cancelButtonTitle:@"取消"
                              otherButtonTitles:@"确定",nil];
        [alert show];
        
        //注册监听,取消badgeValue的数字
        [NotyCenter addObserver:self selector:@selector(CancelBadgeValue) name:@"CancelBadgeValueNotification" object:nil];
    }
}

#pragma mark - UIAlertViewDelegate
-(void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex{
    
    UIViewController *currentVC = [self getCurrentVC];
    if ([currentVC isKindOfClass:[KJTabViewController class]]) {  //根控制器
        KJTabViewController *rootVC = (KJTabViewController *)currentVC;
        KJNavgationController *navc = rootVC.viewControllers[4];
        self.mineVC = navc.viewControllers[0];
        if (buttonIndex == 0) {
            self.mineVC.tabBarItem.badgeValue = [NSString stringWithFormat:@"%@",self.badge];
        }else{
            KJNewFriendController *newVC = [[KJNewFriendController alloc]init];
            rootVC.selectedIndex = 4;
            [self.mineVC.navigationController pushViewController:newVC animated:YES];
            [self CancelBadgeValue];
        }
    }else{  //非根控制器
        KJTabViewController *rootVC = (KJTabViewController *)[UIApplication sharedApplication].keyWindow.rootViewController;
        KJNavgationController *navc = rootVC.viewControllers[4];
        self.mineVC = navc.viewControllers[0];
        if (buttonIndex == 0) {
            self.mineVC.tabBarItem.badgeValue = [NSString stringWithFormat:@"%@",self.badge];
        }
        if (buttonIndex == 1) {
            [currentVC.navigationController popToRootViewControllerAnimated:NO];
            rootVC.selectedIndex = 4;
            KJNewFriendController *newVC = [[KJNewFriendController alloc]init];
            [self.mineVC.navigationController pushViewController:newVC animated:YES];
            [self CancelBadgeValue];
        }
    }
}

#pragma mark - 取消极光消息数目
-(void)CancelBadgeValue{
    self.mineVC.tabBarItem.badgeValue = nil;
}

/**
 *  获取当前屏幕显示的viewcontroller
 */
- (UIViewController *)getCurrentVC
{
    UIViewController *result = nil;
    UIWindow * window = [[UIApplication sharedApplication] keyWindow];
    if (window.windowLevel != UIWindowLevelNormal)
    {
        NSArray *windows = [[UIApplication sharedApplication] windows];
        for(UIWindow * tmpWin in windows)
        {
            if(tmpWin.windowLevel == UIWindowLevelNormal)
               {
                   window = tmpWin;
                   break;
               }
        }
    }
    UIView *frontView = [[window subviews] objectAtIndex:0];
    id nextResponder = [frontView nextResponder];
    if ([nextResponder isKindOfClass:[UIViewController class]]){
        result = nextResponder;
    }else{
        result = window.rootViewController;
    }
    return result;
}