wear und applaufen, allerdings wear ohne kmh

2026-03-06 08:20:54 +01:00
parent c2cfcda942
commit 3d2d68d145
40 changed files with 2847 additions and 172 deletions
@@ -0,0 +1,61 @@
+package de.tstratmann.gpstracker
+
+import android.content.Context
+import android.location.Location
+import java.io.File
+import java.text.SimpleDateFormat
+import java.util.*
+
+class GPXManager(private val context: Context) {
+
+    private var currentFile: File? = null
+
+    fun startNewSession(): File {
+        val timeStamp = SimpleDateFormat("yyyyMMdd_HHmmss", Locale.getDefault()).format(Date())
+        val fileName = "track_$timeStamp.gpx"
+        val file = File(context.filesDir, fileName)
+        file.writeText(getGpxHeader())
+        currentFile = file
+        return file
+    }
+
+    fun appendLocation(location: Location) {
+        currentFile?.let { file ->
+            val time = SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss'Z'", Locale.US).apply {
+                timeZone = TimeZone.getTimeZone("UTC")
+            }.format(Date(location.time))
+
+            val trkpt = """
+                <trkpt lat="${location.latitude}" lon="${location.longitude}">
+                    <ele>${location.altitude}</ele>
+                    <time>$time</time>
+                </trkpt>
+            """.trimIndent()
+
+            val content = file.readText().removeSuffix(getGpxFooter())
+            file.writeText(content + trkpt + getGpxFooter())
+        }
+    }
+
+    fun getActivitiesCount(): Int {
+        return context.filesDir.listFiles { _, name -> name.endsWith(".gpx") }?.size ?: 0
+    }
+
+    fun getAllFiles(): List<File> {
+        return context.filesDir.listFiles { _, name -> name.endsWith(".gpx") }?.toList() ?: emptyList()
+    }
+
+    private fun getGpxHeader() = """
+        <?xml version="1.0" encoding="UTF-8"?>
+        <gpx version="1.1" creator="WearGPSTracker" xmlns="http://www.topografix.com/GPX/1/1">
+            <trk>
+                <name>Track ${SimpleDateFormat("yyyy-MM-dd HH:mm", Locale.getDefault()).format(Date())}</name>
+                <trkseg>
+    """.trimIndent()
+
+    private fun getGpxFooter() = """
+                </trkseg>
+            </trk>
+        </gpx>
+    """.trimIndent()
+}