add text in the circles that will update as listenForData gets data

app/src/main/java/ovh/smayzy/i2d_project_15_app/MainActivity.kt

@@ -4,7 +4,6 @@ import android.Manifest
 import android.bluetooth.BluetoothAdapter
 import android.bluetooth.BluetoothDevice
 import android.bluetooth.BluetoothSocket
-import android.content.Context
 import android.content.pm.PackageManager
 import android.os.Bundle
 import android.util.Log
@@ -26,6 +25,7 @@ import java.text.SimpleDateFormat
 import java.util.*
 import android.graphics.Color
 import androidx.core.content.ContextCompat
+import android.widget.TextView
 
 class MainActivity : AppCompatActivity() {
 
@@ -44,6 +44,9 @@ class MainActivity : AppCompatActivity() {
 
     private lateinit var lineChart: LineChart
 
+    private lateinit var tempCircle: TextView
+    private lateinit var humCircle: TextView
+
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
         enableEdgeToEdge()
@@ -54,6 +57,9 @@ class MainActivity : AppCompatActivity() {
         lineChart = findViewById(R.id.Chart)
         setupChart()
 
+        tempCircle = findViewById(R.id.temp_circle)
+        humCircle = findViewById(R.id.hum_circle)
+
         bluetoothManager = getSystemService(BLUETOOTH_SERVICE) as android.bluetooth.BluetoothManager
         bluetoothAdapter = bluetoothManager.adapter
         if (bluetoothAdapter == null) {
@@ -130,6 +136,8 @@ class MainActivity : AppCompatActivity() {
                         Log.d(tag, "Store: $reading")
 
                         runOnUiThread {
+                            tempCircle.text = getString(R.string.temp_format, temp)
+                            humCircle.text = getString(R.string.hum_format, hum)
                             updateChartData()
                         }
 

app/src/main/res/layout/activity_main.xml

@@ -18,7 +18,7 @@
         app:layout_constraintStart_toStartOf="parent"
         app:layout_constraintTop_toTopOf="parent" />
 
-    <View
+    <TextView
         android:id="@+id/temp_circle"
         android:layout_width="0dp"
         android:layout_height="120dp"
@@ -27,13 +27,18 @@
         android:layout_marginStart="0dp"
         android:layout_marginEnd="0dp"
         android:background="@drawable/temp_circle"
+        android:gravity="center"
+        android:text="--°C"
+        android:textColor="@android:color/white"
+        android:textSize="18sp"
+        android:textStyle="bold"
         app:layout_constraintTop_toBottomOf="@+id/connect_btn"
         app:layout_constraintStart_toStartOf="parent"
         app:layout_constraintEnd_toStartOf="@+id/hum_circle"
         app:layout_constraintHorizontal_chainStyle="spread"
         app:layout_constraintBottom_toBottomOf="@+id/hum_circle" />
 
-    <View
+    <TextView
         android:id="@+id/hum_circle"
         android:layout_width="0dp"
         android:layout_height="120dp"
@@ -42,6 +47,11 @@
         android:layout_marginStart="0dp"
         android:layout_marginEnd="0dp"
         android:background="@drawable/hum_circle"
+        android:gravity="center"
+        android:text="--%"
+        android:textColor="@android:color/white"
+        android:textSize="18sp"
+        android:textStyle="bold"
         app:layout_constraintTop_toBottomOf="@+id/connect_btn"
         app:layout_constraintStart_toEndOf="@+id/temp_circle"
         app:layout_constraintEnd_toEndOf="parent"

app/src/main/res/values/strings.xml

@@ -1,5 +1,9 @@
 <resources>
     <string name="app_name" translatable="false">I2D_Project_15_app</string>
+
     <string name="connect_btn">Connect to HC-05</string>
     <string name="connected">Connected to HC-05</string>
+
+    <string name="temp_format" translatable="false">%.1f°C</string>
+    <string name="hum_format" translatable="false">%.1f%%</string>
 </resources>