如果不存在，则在firebase中推送新节点

Question

在顶部我有一个company id然后我有client id然后我有time stamp然后我有数据，所以我想检查这个公司ID是否存在我如果公司ID不存在，我想在这家公司下添加新客户我想添加上面图像的新节点。我在这里做什么每次都添加一个新节点

LoginResponse *loginResponseObj = [Utililities loadLoginResponseObjectWithKey:LOGIN_RESPONSE_KEY_FOR_USERDEFAULT];
NSMutableDictionary *dataDict = [NSMutableDictionary dictionary];
[dataDict setValue:[NSNumber numberWithFloat:[LocationManager sharedManager].location.coordinate.latitude] forKey:@"lat"];
[dataDict setValue:[NSNumber numberWithFloat:[LocationManager sharedManager].location.coordinate.latitude] forKey:@"lng"];

NSMutableDictionary *timeStampDict = [NSMutableDictionary dictionary];
NSTimeInterval timeInSeconds = [[NSDate date] timeIntervalSince1970];
[timeStampDict setValue:dataDict forKey:[NSString stringWithFormat:@"%.0f",timeInSeconds]];
NSMutableDictionary *fcmDict = [NSMutableDictionary dictionary];
[fcmDict setValue:timeStampDict forKey:loginResponseObj.workerInfo.fcmId];

NSMutableDictionary *companyDict = [NSMutableDictionary dictionary];
[companyDict setValue:fcmDict forKey:[NSString stringWithFormat:@"%.0f",loginResponseObj.workerInfo.companyId]];

[[self.ref child:[NSString stringWithFormat:@"%.0f",loginResponseObj.workerInfo.companyId]]setValue:companyDict];

Answer 1

我有类似的问题，在项目代码中找到：

[[UIBarButtonItem appearance] setBackButtonTitlePositionAdjustment:UIOffsetMake(0, -60) forBarMetrics:UIBarMetricsDefault];

我刚把它删除了。

Answer 2

看起来问题主要是当后退按钮标题设置为不同的偏移量时..

使用以下逻辑更改隐藏导航后退按钮标题的方式： -

if(@available(iOS 11, *)) {
   [[UIBarButtonItem appearance] setTitleTextAttributes:@{NSForegroundColorAttributeName: [UIColor clearColor]} forState:UIControlStateNormal];
   [[UIBarButtonItem appearance] setTitleTextAttributes:@{NSForegroundColorAttributeName: [UIColor clearColor]} forState:UIControlStateHighlighted];

} else {
   [[UIBarButtonItem appearance] setBackButtonTitlePositionAdjustment:UIOffsetMake(-60, -60) forBarMetrics:UIBarMetricsDefault];
}

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