Question

我有一个商店列表如下：

"store" : {
"2" : {
"address" : "amman",
"ctime" : "17:05:00",
"g" : "9q8yyxfgs8",
"id" : "11",
"l" : [ 31.9453666, 35.9283716 ],
"name" : "Kaluti",
"otime" : "00:00:00",
"phone" : "0795080034",
"userId" : "4"
},
"7" : {
"address" : "amman",
"ctime" : "01:00:00",
"g" : "9q8yyxfgs8",
"id" : "7",
"l" : [ 31.9453666, 35.9283716 ],
"name" : "Zalloum33",
"otime" : "05:00:00",
"phone" : "0795080034",
"userId" : "2"
},
"11" : {
"address" : "amman",
"ctime" : "17:05:00",
"g" : "9q8yyxfgs8",
"id" : "11",
"l" : [ 31.9453666, 35.9283716 ],
"name" : "Kaluti",
"otime" : "00:00:00",
"phone" : "0795080034",
"userId" : "4"
},
"12" : {
"address" : "asd",
"ctime" : "22:00:00",
"g" : "9q8yyxfgs8",
"id" : "12",
"l" : [ 37.7922, -122.4056973 ],
"name" : "Amam",
"otime" : "10:00:00",
"phone" : "0795126776",
"userId" : "4"
},
"19" : {
".priority" : "9q8yyxfgs8",
"g" : "9q8yyxfgs8",
"id" : "10",
"l" : [ 37.7922, -122.4056973 ],
"name" : "ahmad"
}
}

当我尝试使用此代码获取此位置时，查询未返回任何值

let center = CLLocation(latitude: 31.97375, longitude: 35.872316)

if let circleQuery = geoFire?.query(at: center, withRadius: 1.0) {
    _ = circleQuery.observe(.keyEntered) { (key, location) in
        print("Key '\(key)' entered the search area and is at location '\(location)'")
    }

    circleQuery.observeReady{
        print("All initial data has been loaded and events have been fired for circle query!")
    }
}

但如果我尝试使用相同的代码，只需用

更改CLLocation

let center = CLLocation(latitude: 37.7832889, longitude: -122.4056973)

它的返回数据。

请告诉我问题在哪里？

Answer 1

您需要根据需要调整半径。在您的示例中，半径为1.0米，仅返回距离中心位置1米范围内的物体。尝试将其增加到500.0米，就像我在下面的示例中所做的那样：

let center = CLLocation(latitude: 31.97375, longitude: 35.872316)

if let circleQuery = geoFire?.query(at: center, withRadius: 500.0) {
    _ = circleQuery.observe(.keyEntered) { (key, location) in
        print("Key '\(key)' entered the search area and is at location '\(location)'")
    }

    circleQuery.observeReady{
        print("All initial data has been loaded and events have been fired for circle query!")
    }
}

GeoFire Query没有返回结果

1 个答案: