code review and lint fixes

vector/src/main/java/im/vector/app/features/createdirect/CreateDirectRoomActivity.kt

@@ -46,9 +46,9 @@ import im.vector.app.core.utils.registerForPermissionsResult
 import im.vector.app.features.analytics.plan.Screen
 import im.vector.app.features.contactsbook.ContactsBookFragment
 import im.vector.app.features.qrcode.QrCodeScannerEvents
+import im.vector.app.features.qrcode.QrCodeScannerFragment
 import im.vector.app.features.qrcode.QrCodeScannerViewModel
 import im.vector.app.features.qrcode.QrScannerArgs
-import im.vector.app.features.qrcode.QrCodeScannerFragment
 import im.vector.app.features.userdirectory.UserListFragment
 import im.vector.app.features.userdirectory.UserListFragmentArgs
 import im.vector.app.features.userdirectory.UserListSharedAction
@@ -111,7 +111,7 @@ class CreateDirectRoomActivity : SimpleFragmentActivity() {
                     Toast.makeText(this, R.string.cannot_dm_self, Toast.LENGTH_SHORT).show()
                     finish()
                 }
-            }
+            }.exhaustive
         }
 
         qrViewModel.observeViewEvents {
@@ -123,7 +123,8 @@ class CreateDirectRoomActivity : SimpleFragmentActivity() {
                     Toast.makeText(this, R.string.qr_code_not_scanned, Toast.LENGTH_SHORT).show()
                     finish()
                 }
-            }
+                else                               -> Unit
+            }.exhaustive
         }
     }
 

vector/src/main/java/im/vector/app/features/createdirect/CreateDirectRoomViewEvents.kt

@@ -16,7 +16,6 @@
 
 package im.vector.app.features.createdirect
 
-import com.airbnb.mvrx.Async
 import im.vector.app.core.platform.VectorViewEvents
 
 sealed class CreateDirectRoomViewEvents : VectorViewEvents {

vector/src/main/java/im/vector/app/features/qrcode/QrCodeScannerActivity.kt

@@ -24,6 +24,7 @@ import androidx.activity.result.ActivityResultLauncher
 import com.airbnb.mvrx.viewModel
 import dagger.hilt.android.AndroidEntryPoint
 import im.vector.app.R
+import im.vector.app.core.extensions.exhaustive
 import im.vector.app.core.extensions.replaceFragment
 import im.vector.app.core.platform.VectorBaseActivity
 import im.vector.app.databinding.ActivitySimpleBinding
@@ -49,7 +50,8 @@ class QrCodeScannerActivity(): VectorBaseActivity<ActivitySimpleBinding>() {
                     Toast.makeText(this, R.string.qr_code_not_scanned, Toast.LENGTH_SHORT).show()
                     finish()
                 }
-            }
+                else                               -> Unit
+            }.exhaustive
         }
 
         if (isFirstCreation()) {
@@ -66,7 +68,6 @@ class QrCodeScannerActivity(): VectorBaseActivity<ActivitySimpleBinding>() {
         finish()
     }
 
-
     companion object {
         private const val EXTRA_OUT_TEXT = "EXTRA_OUT_TEXT"
         private const val EXTRA_OUT_IS_QR_CODE = "EXTRA_OUT_IS_QR_CODE"

vector/src/main/java/im/vector/app/features/qrcode/QrCodeScannerViewModel.kt

@@ -40,11 +40,12 @@ class QrCodeScannerViewModel @AssistedInject constructor(
     companion object : MavericksViewModelFactory<QrCodeScannerViewModel, VectorDummyViewState> by hiltMavericksViewModelFactory()
 
     override fun handle(action: QrCodeScannerAction) {
+        _viewEvents.post(
                 when (action) {
-            is QrCodeScannerAction.CodeDecoded -> _viewEvents.post(QrCodeScannerEvents.CodeParsed(action.result, action.isQrCode))
+                    is QrCodeScannerAction.CodeDecoded -> QrCodeScannerEvents.CodeParsed(action.result, action.isQrCode)
-            is QrCodeScannerAction.SwitchMode  -> _viewEvents.post(QrCodeScannerEvents.SwitchMode)
+                    is QrCodeScannerAction.SwitchMode  -> QrCodeScannerEvents.SwitchMode
-            is QrCodeScannerAction.ScanFailed  -> _viewEvents.post(QrCodeScannerEvents.ParseFailed)
+                    is QrCodeScannerAction.ScanFailed  -> QrCodeScannerEvents.ParseFailed
                 }.exhaustive
+        )
     }
 }
-

vector/src/main/java/im/vector/app/features/usercode/UserCodeActivity.kt

@@ -127,7 +127,7 @@ class UserCodeActivity : VectorBaseActivity<ActivitySimpleBinding>(),
                     Toast.makeText(this, R.string.qr_code_not_scanned, Toast.LENGTH_SHORT).show()
                     finish()
                 }
-            }
+            }.exhaustive
         }
     }
 

vector/src/main/res/layout/fragment_qr_code_scanner.xml

@@ -1,6 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="match_parent"
     android:layout_height="match_parent">
 
@@ -29,6 +30,7 @@
         app:layout_constraintStart_toStartOf="parent"
         app:layout_constraintTop_toBottomOf="@id/appBarLayout" />
 
+    <!-- TODO In the future we could add a toggle to switch the flash, and other possible settings -->
     <Button
         android:id="@+id/userCodeMyCodeButton"
         android:layout_width="wrap_content"
@@ -39,7 +41,8 @@
         android:visibility="gone"
         app:layout_constraintBottom_toBottomOf="parent"
         app:layout_constraintEnd_toEndOf="parent"
-        app:layout_constraintStart_toStartOf="parent" />
+        app:layout_constraintStart_toStartOf="parent"
+        tools:visibility="visible" />
 
     <Button
         android:id="@+id/userCodeOpenGalleryButton"
@@ -65,6 +68,7 @@
         app:layout_constraintBottom_toBottomOf="@id/userCodeMyCodeButton"
         app:layout_constraintEnd_toEndOf="parent"
         app:layout_constraintEnd_toStartOf="@id/userCodeMyCodeButton"
-        app:layout_constraintTop_toTopOf="@id/userCodeMyCodeButton" />
+        app:layout_constraintTop_toTopOf="@id/userCodeMyCodeButton"
+        tools:visibility="visible" />
 
 </androidx.constraintlayout.widget.ConstraintLayout>