From 5c282707a9c8183f165adabb478d4315afaf3676 Mon Sep 17 00:00:00 2001
From: bt <bt@rctt.net>
Date: Sun, 3 May 2026 22:51:03 +0200
Subject: Use "requestCellInfoUpdate' to get cell info faster

---
 app/src/main/AndroidManifest.xml                  |   2 +
 app/src/main/java/net/rctt/netmon/MainActivity.kt | 110 +++++++++++++---------
 2 files changed, 66 insertions(+), 46 deletions(-)

(limited to 'app/src/main')

diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index d036883..f8bbdd0 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -3,6 +3,8 @@
 
     <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
     <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
+    <uses-permission android:name="android.permission.READ_PHONE_STATE" />
+    <uses-permission android:name="android.permission.REQUEST_IGNORE_BATTERY_OPTIMIZATIONS" />
 
     <application
         android:allowBackup="true"
diff --git a/app/src/main/java/net/rctt/netmon/MainActivity.kt b/app/src/main/java/net/rctt/netmon/MainActivity.kt
index 7111922..b3a6d37 100644
--- a/app/src/main/java/net/rctt/netmon/MainActivity.kt
+++ b/app/src/main/java/net/rctt/netmon/MainActivity.kt
@@ -5,12 +5,15 @@ import android.annotation.SuppressLint
 import android.os.Bundle
 import android.os.Handler
 import android.os.Looper
+import android.telephony.CellInfo
 import android.telephony.CellInfoGsm
 import android.telephony.CellInfoLte
 import android.telephony.CellInfoNr
 import android.telephony.CellInfoTdscdma
 import android.telephony.CellInfoWcdma
+import android.telephony.PhoneStateListener
 import android.telephony.TelephonyManager
+import android.telephony.TelephonyManager.CellInfoCallback
 import android.util.Log
 import android.widget.LinearLayout
 import android.widget.TextView
@@ -22,6 +25,9 @@ import androidx.core.view.ViewCompat
 import androidx.core.view.WindowInsetsCompat
 import java.text.SimpleDateFormat
 import java.util.Date
+import java.util.Timer
+import java.util.TimerTask
+
 
 class MainActivity : AppCompatActivity() {
     lateinit var statusView: LinearLayout
@@ -42,64 +48,76 @@ class MainActivity : AppCompatActivity() {
         statusView = findViewById(R.id.statusView)
         cellView = findViewById(R.id.cellView)
 
-        val pLoc = ContextCompat.checkSelfPermission(applicationContext, Manifest.permission.ACCESS_FINE_LOCATION)
+        val pLoc = ContextCompat.checkSelfPermission(
+            applicationContext,
+            Manifest.permission.ACCESS_FINE_LOCATION
+        )
         if (pLoc == -1) {
             log("Location permission required")
-        } else {
-            log("Ready")
-            tel = getSystemService(TELEPHONY_SERVICE) as TelephonyManager
+            return
+        }
+        log("Ready")
 
-            val mainHandler = Handler(Looper.getMainLooper())
+        tel = getSystemService(TELEPHONY_SERVICE) as TelephonyManager
 
-            mainHandler.post(object : Runnable {
-                @RequiresPermission(Manifest.permission.ACCESS_FINE_LOCATION)
-                override fun run() {
-                    refresh()
-                    mainHandler.postDelayed(this, 1000)
-                }
-            })
-        }
+        val mainHandler = Handler(Looper.getMainLooper())
+
+        mainHandler.post(object : Runnable {
+            @RequiresPermission(Manifest.permission.ACCESS_FINE_LOCATION)
+            override fun run() {
+                refresh()
+                mainHandler.postDelayed(this, 100)
+            }
+        })
     }
 
     @RequiresPermission(Manifest.permission.ACCESS_FINE_LOCATION)
     fun refresh() {
         log("refreshing")
 
-        val cellList = tel.allCellInfo
-        cellView.removeAllViews()
-        for (cell in cellList) {
-            when (cell) {
-                is CellInfoGsm -> {
-                    logDetected("GSM")
-                }
-                is CellInfoLte -> {
-                    val id = cell.cellIdentity
-                    if (id.ci == 2147483647) {
-                        continue
-                    }
+        tel.requestCellInfoUpdate(mainExecutor, object : CellInfoCallback() {
+            @RequiresPermission(Manifest.permission.ACCESS_FINE_LOCATION)
+            override fun onCellInfo(cellList: List<CellInfo?>) {
+                cellView.removeAllViews()
+                for (cell in cellList) {
+                    when (cell) {
+                        is CellInfoGsm -> {
+                            logDetected("GSM")
+                        }
 
-                    logDetected("LTE")
-                    logCell("CID: ${id.ci}")
-                    logCell("PCI: ${id.pci}")
-                    logCell("TAC: ${id.tac}")
-                    logCell("EARFCN ${id.earfcn}")
-                    logCell("BANDWIDTH: ${id.bandwidth}")
-                    logCell("RSRP: ${cell.cellSignalStrength.rsrp}")
-                    logCell("DBM: ${cell.cellSignalStrength.dbm}")
-                    logCell("STATUS: ${cell.cellConnectionStatus}")
-                    logCell("")
-                }
-                is CellInfoNr -> {
-                    logDetected("NR")
-                }
-                is CellInfoTdscdma -> {
-                    logDetected("TDSCDMA")
-                }
-                is CellInfoWcdma -> {
-                    logDetected("WCDMA")
+                        is CellInfoLte -> {
+                            val id = cell.cellIdentity
+                            if (id.ci == 2147483647) {
+                                continue
+                            }
+
+                            logDetected("LTE")
+                            logCell("CID: ${id.ci}")
+                            logCell("PCI: ${id.pci}")
+                            logCell("TAC: ${id.tac}")
+                            logCell("EARFCN ${id.earfcn}")
+                            logCell("BANDWIDTH: ${id.bandwidth}")
+                            logCell("RSRP: ${cell.cellSignalStrength.rsrp}")
+                            logCell("DBM: ${cell.cellSignalStrength.dbm}")
+                            logCell("STATUS: ${cell.cellConnectionStatus}")
+                            logCell("")
+                        }
+
+                        is CellInfoNr -> {
+                            logDetected("NR")
+                        }
+
+                        is CellInfoTdscdma -> {
+                            logDetected("TDSCDMA")
+                        }
+
+                        is CellInfoWcdma -> {
+                            logDetected("WCDMA")
+                        }
+                    }
                 }
             }
-        }
+        })
     }
 
     @SuppressLint("SimpleDateFormat", "SetTextI18n")
@@ -121,4 +139,4 @@ class MainActivity : AppCompatActivity() {
         cellView.addView(msg)
         Log.d("NETMON", text)
     }
-}
\ No newline at end of file
+}
-- 
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