Fix speed display after screen turns on

Also, use the tab to make the text less jumpy

V2rayNG/app/src/main/kotlin/com/v2ray/ang/extension/_Ext.kt

@@ -27,34 +27,37 @@ const val divisor = 1024F
 fun Long.toSpeedString() = toTrafficString() + "/s"
 
 fun Long.toTrafficString(): String {
+    if (this == 0L)
+        return "\t\t\t0\t  B"
+
     if (this < threshold)
-        return "$this B"
+        return "${this.toFloat().toShortString()}\t  B"
 
     val kib = this / divisor
     if (kib < threshold)
-        return "${kib.toShortString()} KB"
+        return "${kib.toShortString()}\t KB"
 
     val mib = kib / divisor
     if (mib < threshold)
-        return "${mib.toShortString()} MB"
+        return "${mib.toShortString()}\t MB"
 
     val gib = mib / divisor
     if (gib < threshold)
-        return "${gib.toShortString()} GB"
+        return "${gib.toShortString()}\t GB"
 
     val tib = gib / divisor
     if (tib < threshold)
-        return "${tib.toShortString()} TB"
+        return "${tib.toShortString()}\t TB"
 
     val pib = tib / divisor
     if (pib < threshold)
-        return "${pib.toShortString()} PB"
+        return "${pib.toShortString()}\t PB"
 
     return "∞"
 }
 
 private fun Float.toShortString(): String {
-    val s = toString()
+    val s = "%.2f".format(this)
     if (s.length <= 4)
         return s
     return s.substring(0, 4).removeSuffix(".")

V2rayNG/app/src/main/kotlin/com/v2ray/ang/service/V2RayVpnService.kt

@@ -52,6 +52,7 @@ class V2RayVpnService : VpnService() {
     }
 
     private val v2rayPoint = Libv2ray.newV2RayPoint(V2RayCallback())
+    private var lastQueryTime = 0L
     private lateinit var configContent: String
     private lateinit var mInterface: ParcelFileDescriptor
     val fd: Int get() = mInterface.fd
@@ -182,6 +183,7 @@ class V2RayVpnService : VpnService() {
         // Create a new interface using the builder and save the parameters.
         mInterface = builder.establish()
         sendFd()
+        lastQueryTime = System.currentTimeMillis()
         startSpeedNotification()
     }
 
@@ -383,10 +385,13 @@ class V2RayVpnService : VpnService() {
                         val uplink = v2rayPoint.queryStats("socks", "uplink")
                         val downlink = v2rayPoint.queryStats("socks", "downlink")
                         val zero_speed = (uplink == 0L && downlink == 0L)
+                        val queryTime = System.currentTimeMillis()
                         if (!zero_speed || !last_zero_speed) {
-                            updateNotification("${cf_name}  •  ${(uplink / 3).toSpeedString()}↑  ${(downlink / 3).toSpeedString()}↓")
+                            updateNotification("${cf_name}  •  ${(uplink * 1000 / (queryTime - lastQueryTime)).toSpeedString()}↑" +
+                                    "  ${(downlink * 1000 / (queryTime - lastQueryTime)).toSpeedString()}↓")
                         }
                         last_zero_speed = zero_speed
+                        lastQueryTime = queryTime
                     }
         }
     }