Change fragmentManager!! to requireFragmentManager() to appease the linter.

Author: tasn

app/src/main/java/com/etesync/syncadapter/ui/AccountSettingsActivity.kt

@@ -217,7 +217,7 @@ class LegacyAccountSettingsFragment : PreferenceFragmentCompat(), LoaderManager.
         val prefPassword = findPreference("password") as EditTextPreference
         prefPassword.onPreferenceChangeListener = Preference.OnPreferenceChangeListener { _, newValue ->
             val credentials = if (newValue != null) LoginCredentials(settings.uri, account.name, newValue as String) else null
-            LoginCredentialsChangeFragment.newInstance(account, credentials!!).show(fragmentManager!!, null)
+            LoginCredentialsChangeFragment.newInstance(account, credentials!!).show(requireFragmentManager(), null)
             loaderManager.restartLoader(0, arguments, this@LegacyAccountSettingsFragment)
             false
         }

app/src/main/java/com/etesync/syncadapter/ui/CreateCollectionFragment.kt

@@ -64,7 +64,7 @@ class CreateCollectionFragment : DialogFragment(), LoaderManager.LoaderCallbacks
         val parent = activity
         if (parent != null) {
             if (exception != null)
-                fragmentManager!!.beginTransaction()
+                requireFragmentManager().beginTransaction()
                         .add(ExceptionInfoFragment.newInstance(exception, account), null)
                         .commitAllowingStateLoss()
             else

app/src/main/java/com/etesync/syncadapter/ui/DeleteCollectionFragment.kt

@@ -59,7 +59,7 @@ class DeleteCollectionFragment : DialogFragment(), LoaderManager.LoaderCallbacks
         dismissAllowingStateLoss()
 
         if (exception != null)
-            fragmentManager!!.beginTransaction()
+            requireFragmentManager().beginTransaction()
                     .add(ExceptionInfoFragment.newInstance(exception, account), null)
                     .commitAllowingStateLoss()
         else {
@@ -124,7 +124,7 @@ class DeleteCollectionFragment : DialogFragment(), LoaderManager.LoaderCallbacks
                     .setPositiveButton(android.R.string.yes) { dialog, _ ->
                         val frag = DeleteCollectionFragment()
                         frag.arguments = arguments
-                        frag.show(fragmentManager!!, null)
+                        frag.show(requireFragmentManager(), null)
                     }
                     .setNegativeButton(android.R.string.no) { _, _ -> dismiss() }
                     .create()

app/src/main/java/com/etesync/syncadapter/ui/MigrateV2Activity.kt

@@ -340,7 +340,7 @@ class LoginFragment() : Fragment() {
         login.setOnClickListener {
             val credentials = validateLoginData()
             if (credentials != null)
-                LoginDoFragment.newInstance(accountV1, credentials).show(fragmentManager!!, null)
+                LoginDoFragment.newInstance(accountV1, credentials).show(requireFragmentManager(), null)
         }
 
         val forgotPassword = v.findViewById<View>(R.id.forgot_password) as TextView

app/src/main/java/com/etesync/syncadapter/ui/setup/EncryptionDetailsFragment.kt

@@ -27,7 +27,7 @@ class EncryptionDetailsFragment : Fragment() {
         val v = inflater.inflate(R.layout.login_encryption_details, container, false)
 
         val btnBack = v.findViewById<View>(R.id.back) as Button
-        btnBack.setOnClickListener { fragmentManager!!.popBackStack() }
+        btnBack.setOnClickListener { requireFragmentManager().popBackStack() }
 
         val config = arguments!!.getSerializable(KEY_CONFIG) as BaseConfigurationFinder.Configuration
 
@@ -50,7 +50,7 @@ class EncryptionDetailsFragment : Fragment() {
                 return@OnClickListener
             }
 
-            SetupEncryptionFragment.newInstance(config).show(fragmentManager!!, null)
+            SetupEncryptionFragment.newInstance(config).show(requireFragmentManager(), null)
         })
 
         return v

app/src/main/java/com/etesync/syncadapter/ui/setup/LoginCredentialsChangeFragment.kt

@@ -54,7 +54,7 @@ class LoginCredentialsChangeFragment : DialogFragment(), LoaderManager.LoaderCal
         if (data != null) {
             if (data.isFailed)
             // no service found: show error message
-                fragmentManager!!.beginTransaction()
+                requireFragmentManager().beginTransaction()
                         .add(NothingDetectedFragment.newInstance(data.error!!.localizedMessage), null)
                         .commitAllowingStateLoss()
             else {

app/src/main/java/com/etesync/syncadapter/ui/setup/LoginCredentialsFragment.kt

@@ -64,7 +64,7 @@ class LoginCredentialsFragment : Fragment() {
         login.setOnClickListener {
             val credentials = validateLoginData()
             if (credentials != null)
-                DetectConfigurationFragment.newInstance(credentials).show(fragmentManager!!, null)
+                DetectConfigurationFragment.newInstance(credentials).show(requireFragmentManager(), null)
         }
 
         val forgotPassword = v.findViewById<View>(R.id.forgot_password) as TextView