问题描述
定时器任务在一定延迟时间内没有被调用。
这是我在 Kotlin 中的代码
public class getLocationFromApi : AsyncTask<Void?,Void?,Void?>()
{
private val auth = FirebaseAuth.getInstance()
private var vehicleAPI_Id: String? = null
private var vehicleNo: String? = null
private var imei: String? = null
private var angle: String? = null
private var date: String? = null
private var ignition: String? = null
private var lat: String? = null
private var lcoation: String? = null
private var lon: String? = null
private var speed: String? = null
private var tempr: String? = null
private var sb: String? = null
private var tpLink=""
private var API_LINK : String? = "http://ctyf.co.in/api/companyvehiclelatestinfo?token=F934A0C439&vehname="
override fun onPreExecute() {
super.onPreExecute()
getVehicleNoFromFirestoreDB()
}
override fun doInBackground(vararg params: Void?): Void? {
try {
val httpHandler = HttpHandler()
val json_dataString: String = httpHandler.
makeServiceCall(""" http://ctyf.co.in/api/companyvehiclelatestinfo?token=F934A0C439&vehname=$vehicleAPI_Id""")
val jsonObject = JSONObject(json_dataString)
val jsonarray = jsonObject.getJSONArray("Vehicle")
for (i in 0 until jsonarray.length()) {
val js = jsonarray.getJSONObject(i)
vehicleNo = js.getString("VehicleNo")
imei = js.getString("Imei")
lcoation = js.getString("Location")
date = js.getString("Date")
tempr = js.getString("Tempr")
ignition = js.getString("Ignition")
lat = js.getString("Lat")
lon = js.getString("Long")
speed = js.getString("Speed")
angle = js.getString("Angle")
sb = """
VehicleNo : $vehicleNo
$imei
$lcoation
$date
$tempr
$ignition
lat : $lat
long :$lon
speed :$speed
angle :$angle
""".trimIndent()
/* String email = js.getString("email");
JSONObject phone=js.getJSONObject("phone");
String mobile =phone.getString("mobile");
tv.setText(name);*/
}
} catch (e: Exception) {
println(e.message)
}
return null
}
override fun onPostExecute(aVoid: Void?) {
super.onPostExecute(aVoid)
Log.d("api2",sb.toString())
Log.d("lat",lat.toString())
if(lat!=null) {
Timer().schedule(timerTask {
val geoPoint = GeoPoint(lat!!.todouble(),lon!!.todouble())
val liveUser = LiveUser(auth.uid.toString(),geoPoint,Timestamp.Now())
updateLiveLocation(liveUser)
Log.e("NIlu_TAG","Hello World")
},1000)
}
}
//save location every 4 seconds
private fun updateLiveLocation(liveUser : LiveUser)
{
try
{
val locationRef = FirebaseFirestore.getInstance()
.collection("LiveLocation")
locationRef.document(auth.uid.toString())
.set(liveUser)
.addOnCompleteListener { task ->
if (task.isSuccessful)
{
Log.i("LiveLocation","updateLiveLocation : Success.")
}
}
}
catch (e : NullPointerException) { }
}
private fun getVehicleNoFromFirestoreDB() {
try {
val db = FirebaseFirestore.getInstance()
db.collection("OperatorUsers").document(auth.uid.toString()).get().addOnSuccessListener { snapshot ->
if(snapshot.exists()){
val user = snapshot.toObject(User::class.java)
if(user!=null){
vehicleAPI_Id = user.vehicleNo
if(!vehicleAPI_Id.equals("not added")) {
//To attach vehicleId/vehicleNo to the API link for the particular device
tpLink = """$API_LINK$vehicleAPI_Id"""
Log.d("API_LINK",tpLink)
} else {
Log.d("vehicleNo","vehicleNo not added")
}
}
}else{
Log.d("err","no data")
}
}
} catch (e: Exception) { }
}
}
嗯，这不是活动，我从主片段调用这个类，我想每隔一秒更新一次数据。
我不知道为什么计时器任务在不活动时不起作用......？
我怎样才能做到这一点？ 有什么建议么 ？？？请帮忙....
解决方法
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