Merge pull request #754 from AppDevNext/UnixTimeRelativ2NowAxisValueFormatter

UnixTime relative to now AxisValueFormatter

Author: hannesa2

app/src/main/kotlin/info/appdev/chartexample/formatter/UnixTimeRelative2NowAxisValueFormatter.kt

@@ -0,0 +1,17 @@
+package info.appdev.chartexample.formatter
+
+import info.appdev.charting.components.AxisBase
+import info.appdev.charting.formatter.IAxisValueFormatter
+import java.text.SimpleDateFormat
+import java.util.Locale
+
+class UnixTimeRelative2NowAxisValueFormatter(val format: String = "yyyy-MM-dd'T'HH:mm:ss'Z'") : IAxisValueFormatter {
+
+    val simpleDateFormat = SimpleDateFormat(format, Locale.getDefault())
+
+    override fun getFormattedValue(value: Float, axis: AxisBase?): String {
+        val relative2Now = System.currentTimeMillis() + (value.toLong() * 1000)
+        return simpleDateFormat.format(relative2Now)
+    }
+
+}