add call button on ring

app/src/main/java/ru/officialdakari/fmd/RingActivity.kt

@@ -1,7 +1,10 @@
 package ru.officialdakari.fmd
 
+import android.Manifest
 import android.app.KeyguardManager
 import android.content.Context
+import android.content.Intent
+import android.content.pm.PackageManager
 import android.media.AudioAttributes
 import android.media.MediaPlayer
 import android.media.RingtoneManager
@@ -12,6 +15,7 @@ import androidx.activity.compose.setContent
 import androidx.activity.enableEdgeToEdge
 import androidx.compose.foundation.layout.Arrangement
 import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.Row
 import androidx.compose.foundation.layout.fillMaxSize
 import androidx.compose.foundation.layout.padding
 import androidx.compose.material3.Button
@@ -23,6 +27,8 @@ import androidx.compose.ui.Modifier
 import androidx.compose.ui.tooling.preview.Preview
 import androidx.compose.ui.unit.dp
 import androidx.compose.ui.unit.em
+import androidx.core.app.ActivityCompat
+import androidx.core.net.toUri
 import ru.officialdakari.fmd.ui.theme.FindMyDeviceTheme
 
 class RingActivity : ComponentActivity() {
@@ -38,7 +44,7 @@ class RingActivity : ComponentActivity() {
         setContent {
             FindMyDeviceTheme {
                 Scaffold(modifier = Modifier.fillMaxSize()) { innerPadding ->
-                    RingScreen(Modifier.padding(innerPadding), stopRinging = { stopRinging() })
+                    RingScreen(this@RingActivity, Modifier.padding(innerPadding), stopRinging = { stopRinging() })
                 }
             }
         }
@@ -88,7 +94,7 @@ class RingActivity : ComponentActivity() {
 }
 
 @Composable
-fun RingScreen(modifier: Modifier, stopRinging: () -> Unit) {
+fun RingScreen(context: Context, modifier: Modifier, stopRinging: () -> Unit) {
     Column(
         modifier = modifier
             .fillMaxSize()
@@ -105,8 +111,29 @@ fun RingScreen(modifier: Modifier, stopRinging: () -> Unit) {
                 text = Utils.lockMessage
             )
         }
+        Row(
+            horizontalArrangement = Arrangement.SpaceBetween
+        ) {
             Button(onClick = { stopRinging() }) {
                 Text(text = "Stop ringing")
             }
+            if (Utils.lockPhoneNum != null) {
+                Button(
+                    onClick = {
+                        val callIntent = Intent(Intent.ACTION_CALL)
+                        callIntent.setData("tel:${Utils.lockPhoneNum}".toUri())
+                        if (ActivityCompat.checkSelfPermission(
+                                context,
+                                Manifest.permission.CALL_PHONE
+                            ) == PackageManager.PERMISSION_GRANTED
+                        ) {
+                            context.startActivity(callIntent)
+                        }
+                    }
+                ) {
+                    Text("Call ${Utils.lockPhoneNum}")
+                }
+            }
+        }
     }
 }