compileSdkVersion 30

app/src/main/java/info/nightscout/androidaps/dialogs/LoopDialog.kt

@@ -63,7 +63,7 @@ class LoopDialog : DaggerDialogFragment() {
     private var showOkCancel: Boolean = true
     private var _binding: DialogLoopBinding? = null
     private var loopHandler = Handler()
-    private var refreshDialog: Runnable? = null
+    private lateinit var refreshDialog: Runnable
 
     // This property is only valid between onCreateView and
     // onDestroyView.
@@ -415,7 +415,7 @@ class LoopDialog : DaggerDialogFragment() {
                 it.commitAllowingStateLoss()
             }
         } catch (e: IllegalStateException) {
-            aapsLogger.debug(e.localizedMessage)
+            aapsLogger.debug(e.localizedMessage ?: e.toString())
         }
     }
 }

app/src/main/java/info/nightscout/androidaps/plugins/general/overview/OverviewFragment.kt

@@ -119,7 +119,7 @@ class OverviewFragment : DaggerFragment(), View.OnClickListener, OnLongClickList
     private var smallHeight = false
     private lateinit var dm: DisplayMetrics
     private var axisWidth: Int = 0
-    private var refreshLoop: Runnable? = null
+    private lateinit var refreshLoop: Runnable
     private lateinit var handler: Handler
 
     private val secondaryGraphs = ArrayList<GraphView>()
@@ -583,9 +583,9 @@ class OverviewFragment : DaggerFragment(), View.OnClickListener, OnLongClickList
                 task = null
             }
         }
-        handler.removeCallbacks(task)
+        task?.let { handler.removeCallbacks(it) }
         task = UpdateRunnable()
-        handler.postDelayed(task, 500)
+        task?.let { handler.postDelayed(it, 500) }
     }
 
     @Suppress("UNUSED_PARAMETER")

app/src/main/java/info/nightscout/androidaps/plugins/general/smsCommunicator/activities/SmsCommunicatorOtpActivity.kt

@@ -88,7 +88,7 @@ class SmsCommunicatorOtpActivity : NoSplashAppCompatActivity() {
                 Runnable {
                     val clipboard = getSystemService(Context.CLIPBOARD_SERVICE) as ClipboardManager
                     val clip = ClipData.newPlainText("OTP Secret", otp.provisioningSecret())
-                    clipboard.primaryClip = clip
+                    clipboard.setPrimaryClip(clip)
                     ToastUtils.Long.infoToast(this, resourceHelper.gs(R.string.smscommunicator_otp_export_successful))
                     uel.log(Action.OTP_EXPORT, Sources.SMS)
                 })

app/src/main/java/info/nightscout/androidaps/receivers/BTReceiver.kt

@@ -13,7 +13,7 @@ class BTReceiver : DaggerBroadcastReceiver() {
 
     override fun onReceive(context: Context, intent: Intent) {
         super.onReceive(context, intent)
-        val device: BluetoothDevice = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE)
+        val device: BluetoothDevice = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE) ?: return
 
         when (intent.action) {
             BluetoothDevice.ACTION_ACL_CONNECTED    ->

app/src/main/java/info/nightscout/androidaps/utils/ActivityMonitor.kt

@@ -20,8 +20,8 @@ class ActivityMonitor @Inject constructor(
     private val dateUtil: DateUtil
 ) : Application.ActivityLifecycleCallbacks {
 
-    override fun onActivityPaused(activity: Activity?) {
+    override fun onActivityPaused(activity: Activity) {
-        val name = activity?.javaClass?.simpleName ?: return
+        val name = activity.javaClass.simpleName
         val resumed = sp.getLong("Monitor_" + name + "_" + "resumed", 0)
         if (resumed == 0L) {
             aapsLogger.debug(LTag.UI, "onActivityPaused: $name resumed == 0")
@@ -36,25 +36,25 @@ class ActivityMonitor @Inject constructor(
         aapsLogger.debug(LTag.UI, "onActivityPaused: $name elapsed=$elapsed total=${total + elapsed}")
     }
 
-    override fun onActivityResumed(activity: Activity?) {
+    override fun onActivityResumed(activity: Activity) {
-        val name = activity?.javaClass?.simpleName ?: return
+        val name = activity.javaClass.simpleName
         aapsLogger.debug(LTag.UI, "onActivityResumed: $name")
         sp.putLong("Monitor_" + name + "_" + "resumed", dateUtil.now())
     }
 
-    override fun onActivityStarted(activity: Activity?) {
+    override fun onActivityStarted(activity: Activity) {
     }
 
-    override fun onActivityDestroyed(activity: Activity?) {
+    override fun onActivityDestroyed(activity: Activity) {
     }
 
-    override fun onActivitySaveInstanceState(activity: Activity?, outState: Bundle?) {
+    override fun onActivitySaveInstanceState(activity: Activity, outState: Bundle) {
     }
 
-    override fun onActivityStopped(activity: Activity?) {
+    override fun onActivityStopped(activity: Activity) {
     }
 
-    override fun onActivityCreated(activity: Activity?, savedInstanceState: Bundle?) {
+    override fun onActivityCreated(activity: Activity, savedInstanceState: Bundle?) {
     }
 
     private fun toText(): String {

automation/src/main/java/info/nightscout/androidaps/services/LocationService.kt

@@ -148,16 +148,14 @@ class LocationService : DaggerService() {
 
     override fun onDestroy() {
         super.onDestroy()
-        if (locationManager != null) {
         try {
             if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
                 return
             }
-                locationManager!!.removeUpdates(locationListener)
+            locationListener?.let { locationManager?.removeUpdates(it) }
         } catch (ex: Exception) {
             aapsLogger.error(LTag.LOCATION, "fail to remove location listener, ignore", ex)
         }
-        }
         disposable.clear()
     }
 

core/core_dependencies.gradle

@@ -87,7 +87,7 @@ dependencies {
     api 'com.google.android.gms:play-services-wearable:17.0.0'
     api 'com.google.android.gms:play-services-location:17.1.0'
 
-    api("com.google.android:flexbox:2.0.1")
+    api 'com.google.android.flexbox:flexbox:3.0.0'
     api("io.socket:socket.io-client:1.0.0") {
         // excluding org.json which is provided by Android
         exclude group: "org.json", module: "json"

core/src/main/java/info/nightscout/androidaps/activities/ErrorHelperActivity.kt

@@ -25,13 +25,13 @@ class ErrorHelperActivity : DialogAppCompatActivity() {
         super.onCreate(savedInstanceState)
         val errorDialog = ErrorDialog()
         errorDialog.helperActivity = this
-        errorDialog.status = intent.getStringExtra(STATUS)
+        errorDialog.status = intent.getStringExtra(STATUS) ?: ""
         errorDialog.sound = intent.getIntExtra(SOUND_ID, R.raw.error)
-        errorDialog.title = intent.getStringExtra(TITLE)
+        errorDialog.title = intent.getStringExtra(TITLE)?: ""
         errorDialog.show(supportFragmentManager, "Error")
 
         if (sp.getBoolean(R.string.key_ns_create_announcements_from_errors, true))
-            disposable += repository.runTransaction(InsertTherapyEventAnnouncementTransaction(intent.getStringExtra(STATUS))).subscribe()
+            disposable += repository.runTransaction(InsertTherapyEventAnnouncementTransaction(intent.getStringExtra(STATUS) ?: "")).subscribe()
     }
 
     companion object {

core/src/main/java/info/nightscout/androidaps/utils/locale/LocaleHelper.kt

@@ -50,7 +50,7 @@ object LocaleHelper {
         configuration.setLocale(newLocale)
         val localeList = LocaleList(newLocale)
         LocaleList.setDefault(localeList)
-        configuration.locales = localeList
+        configuration.setLocales(localeList)
         val context = ctx.createConfigurationContext(configuration)
         return ContextWrapper(context)
     }

gradle/android_dependencies.gradle

@@ -1,5 +1,5 @@
 android {
-    compileSdkVersion 28
+    compileSdkVersion 30
     defaultConfig {
         minSdkVersion 26
         targetSdkVersion 28

wear/build.gradle

@@ -46,7 +46,7 @@ def generateGitBuild = { ->
 }
 
 android {
-    compileSdkVersion 28
+    compileSdkVersion 30
 
     defaultConfig {
         applicationId "info.nightscout.androidaps"