Thorsten
62 lines
2.0 KiB
Kotlin
62 lines
2.0 KiB
Kotlin
package de.tstratmann.gpstracker
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import android.content.Context
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import android.location.Location
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import java.io.File
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import java.text.SimpleDateFormat
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import java.util.*
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class GPXManager(private val context: Context) {
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private var currentFile: File? = null
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fun startNewSession(): File {
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val timeStamp = SimpleDateFormat("yyyyMMdd_HHmmss", Locale.getDefault()).format(Date())
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val fileName = "track_$timeStamp.gpx"
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val file = File(context.filesDir, fileName)
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file.writeText(getGpxHeader())
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currentFile = file
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return file
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}
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fun appendLocation(location: Location) {
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currentFile?.let { file ->
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val time = SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss'Z'", Locale.US).apply {
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timeZone = TimeZone.getTimeZone("UTC")
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}.format(Date(location.time))
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val trkpt = """
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<trkpt lat="${location.latitude}" lon="${location.longitude}">
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<ele>${location.altitude}</ele>
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<time>$time</time>
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</trkpt>
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""".trimIndent()
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val content = file.readText().removeSuffix(getGpxFooter())
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file.writeText(content + trkpt + getGpxFooter())
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}
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}
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fun getActivitiesCount(): Int {
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return context.filesDir.listFiles { _, name -> name.endsWith(".gpx") }?.size ?: 0
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}
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fun getAllFiles(): List<File> {
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return context.filesDir.listFiles { _, name -> name.endsWith(".gpx") }?.toList() ?: emptyList()
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}
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private fun getGpxHeader() = """
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<?xml version="1.0" encoding="UTF-8"?>
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<gpx version="1.1" creator="WearGPSTracker" xmlns="http://www.topografix.com/GPX/1/1">
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<trk>
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<name>Track ${SimpleDateFormat("yyyy-MM-dd HH:mm", Locale.getDefault()).format(Date())}</name>
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<trkseg>
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""".trimIndent()
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private fun getGpxFooter() = """
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</trkseg>
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</trk>
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</gpx>
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""".trimIndent()
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}
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