chore: simplify notification permission request

app-common/src/main/java/im/angry/openeuicc/ui/MainActivity.kt

@@ -16,6 +16,7 @@ import android.view.MenuItem
 import android.view.View
 import android.widget.ProgressBar
 import androidx.activity.enableEdgeToEdge
+import androidx.annotation.RequiresApi
 import androidx.fragment.app.Fragment
 import androidx.lifecycle.lifecycleScope
 import androidx.viewpager2.adapter.FragmentStateAdapter
@@ -125,16 +126,11 @@ open class MainActivity : BaseEuiccAccessActivity(), OpenEuiccContextMarker {
         }
     }
 
+    @RequiresApi(Build.VERSION_CODES.TIRAMISU)
     private fun ensureNotificationPermissions() {
-        val needsNotificationPerms = Build.VERSION.SDK_INT >= Build.VERSION_CODES.TIRAMISU;
-        val notificationPermsGranted =
-            needsNotificationPerms && checkSelfPermission(android.Manifest.permission.POST_NOTIFICATIONS) == PackageManager.PERMISSION_GRANTED
-        if (needsNotificationPerms && !notificationPermsGranted) {
-            requestPermissions(
-                arrayOf(android.Manifest.permission.POST_NOTIFICATIONS),
-                PERMISSION_REQUEST_CODE
-            )
-        }
+        val permission = android.Manifest.permission.POST_NOTIFICATIONS
+        if (checkSelfPermission(permission) == PackageManager.PERMISSION_GRANTED) return
+        requestPermissions(arrayOf(permission), PERMISSION_REQUEST_CODE)
     }
 
     private suspend fun init(fromUsbEvent: Boolean = false) {
@@ -209,7 +205,7 @@ open class MainActivity : BaseEuiccAccessActivity(), OpenEuiccContextMarker {
             viewPager.currentItem = 0
         }
 
-        if (pages.size > 0) {
+        if (pages.isNotEmpty() && Build.VERSION.SDK_INT >= Build.VERSION_CODES.TIRAMISU) {
             ensureNotificationPermissions()
         }