Fix 'kotlin-android-extensions' Gradle plugin deprecated

app/build.gradle

@@ -1,6 +1,5 @@
 apply plugin: 'com.android.application'
 apply plugin: 'kotlin-android'
-apply plugin: 'kotlin-android-extensions'
 apply plugin: 'kotlin-kapt'
 
 android {

app/src/main/java/com/kunzisoft/keepass/activities/FileDatabaseSelectActivity.kt

@@ -63,14 +63,13 @@ import com.kunzisoft.keepass.settings.PreferencesUtil
 import com.kunzisoft.keepass.utils.*
 import com.kunzisoft.keepass.view.asError
 import com.kunzisoft.keepass.viewmodels.DatabaseFilesViewModel
-import kotlinx.android.synthetic.main.activity_file_selection.*
 import java.io.FileNotFoundException
 
 class FileDatabaseSelectActivity : SpecialModeActivity(),
         AssignMasterKeyDialogFragment.AssignPasswordDialogListener {
 
     // Views
-    private var coordinatorLayout: CoordinatorLayout? = null
+    private lateinit var coordinatorLayout: CoordinatorLayout
     private var createDatabaseButtonView: View? = null
     private var openDatabaseButtonView: View? = null
 
@@ -217,7 +216,7 @@ class FileDatabaseSelectActivity : SpecialModeActivity(),
                                 resultError = "$resultError $resultMessage"
                             }
                             Log.e(TAG, resultError)
-                            Snackbar.make(activity_file_selection_coordinator_layout,
+                            Snackbar.make(coordinatorLayout,
                                     resultError,
                                     Snackbar.LENGTH_LONG).asError().show()
                         }
@@ -238,9 +237,7 @@ class FileDatabaseSelectActivity : SpecialModeActivity(),
     private fun fileNoFoundAction(e: FileNotFoundException) {
         val error = getString(R.string.file_not_found_content)
         Log.e(TAG, error, e)
-        coordinatorLayout?.let {
-            Snackbar.make(it, error, Snackbar.LENGTH_LONG).asError().show()
-        }
+        Snackbar.make(coordinatorLayout, error, Snackbar.LENGTH_LONG).asError().show()
     }
 
     private fun launchPasswordActivity(databaseUri: Uri, keyFile: Uri?) {
@@ -344,7 +341,7 @@ class FileDatabaseSelectActivity : SpecialModeActivity(),
             }
         } catch (e: Exception) {
             val error = getString(R.string.error_create_database_file)
-            Snackbar.make(activity_file_selection_coordinator_layout, error, Snackbar.LENGTH_LONG).asError().show()
+            Snackbar.make(coordinatorLayout, error, Snackbar.LENGTH_LONG).asError().show()
             Log.e(TAG, error, e)
         }
     }
@@ -372,9 +369,7 @@ class FileDatabaseSelectActivity : SpecialModeActivity(),
                         .show(supportFragmentManager, "passwordDialog")
             } else {
                 val error = getString(R.string.error_create_database)
-                coordinatorLayout?.let {
-                    Snackbar.make(it, error, Snackbar.LENGTH_LONG).asError().show()
-                }
+                Snackbar.make(coordinatorLayout, error, Snackbar.LENGTH_LONG).asError().show()
                 Log.e(TAG, error)
             }
         }

app/src/main/java/com/kunzisoft/keepass/activities/ImageViewerActivity.kt

@@ -26,6 +26,7 @@ import android.text.format.Formatter
 import android.util.Log
 import android.view.MenuItem
 import android.view.View
+import android.view.ViewGroup
 import android.widget.ImageView
 import androidx.appcompat.widget.Toolbar
 import com.igreenwood.loupe.Loupe
@@ -33,7 +34,6 @@ import com.kunzisoft.keepass.R
 import com.kunzisoft.keepass.activities.lock.LockingActivity
 import com.kunzisoft.keepass.database.element.Attachment
 import com.kunzisoft.keepass.database.element.Database
-import kotlinx.android.synthetic.main.activity_image_viewer.*
 
 class ImageViewerActivity : LockingActivity() {
 
@@ -47,6 +47,7 @@ class ImageViewerActivity : LockingActivity() {
         supportActionBar?.setDisplayHomeAsUpEnabled(true)
         supportActionBar?.setDisplayShowHomeEnabled(true)
 
+        val imageContainerView: ViewGroup = findViewById(R.id.image_viewer_container)
         val imageView: ImageView = findViewById(R.id.image_viewer_image)
         val progressView: View = findViewById(R.id.image_viewer_progress)
 
@@ -71,7 +72,7 @@ class ImageViewerActivity : LockingActivity() {
             finish()
         }
 
-        Loupe.create(imageView, image_viewer_container) {
+        Loupe.create(imageView, imageContainerView) {
             onViewTranslateListener = object : Loupe.OnViewTranslateListener {
 
                 override fun onStart(view: ImageView) {

app/src/main/java/com/kunzisoft/keepass/activities/PasswordActivity.kt

@@ -36,6 +36,7 @@ import android.widget.*
 import androidx.activity.viewModels
 import androidx.annotation.RequiresApi
 import androidx.appcompat.widget.Toolbar
+import androidx.coordinatorlayout.widget.CoordinatorLayout
 import androidx.core.app.ActivityCompat
 import androidx.fragment.app.commit
 import com.google.android.material.snackbar.Snackbar
@@ -71,7 +72,6 @@ import com.kunzisoft.keepass.utils.UriUtil
 import com.kunzisoft.keepass.view.KeyFileSelectionView
 import com.kunzisoft.keepass.view.asError
 import com.kunzisoft.keepass.viewmodels.DatabaseFileViewModel
-import kotlinx.android.synthetic.main.activity_password.*
 import java.io.FileNotFoundException
 
 open class PasswordActivity : SpecialModeActivity(), AdvancedUnlockFragment.BuilderListener {
@@ -84,8 +84,9 @@ open class PasswordActivity : SpecialModeActivity(), AdvancedUnlockFragment.Buil
     private var confirmButtonView: Button? = null
     private var checkboxPasswordView: CompoundButton? = null
     private var checkboxKeyFileView: CompoundButton? = null
-    private var advancedUnlockFragment: AdvancedUnlockFragment? = null
     private var infoContainerView: ViewGroup? = null
+    private lateinit var coordinatorLayout: CoordinatorLayout
+    private var advancedUnlockFragment: AdvancedUnlockFragment? = null
 
     private val databaseFileViewModel: DatabaseFileViewModel by viewModels()
 
@@ -131,6 +132,7 @@ open class PasswordActivity : SpecialModeActivity(), AdvancedUnlockFragment.Buil
         checkboxPasswordView = findViewById(R.id.password_checkbox)
         checkboxKeyFileView = findViewById(R.id.keyfile_checkox)
         infoContainerView = findViewById(R.id.activity_password_info_container)
+        coordinatorLayout = findViewById(R.id.activity_password_coordinator_layout)
 
         mPermissionAsked = savedInstanceState?.getBoolean(KEY_PERMISSION_ASKED) ?: mPermissionAsked
         readOnly = ReadOnlyHelper.retrieveReadOnlyFromInstanceStateOrPreference(this, savedInstanceState)
@@ -271,7 +273,7 @@ open class PasswordActivity : SpecialModeActivity(), AdvancedUnlockFragment.Buil
                                 resultError = "$resultError $resultMessage"
                             }
                             Log.e(TAG, resultError)
-                            Snackbar.make(activity_password_coordinator_layout,
+                            Snackbar.make(coordinatorLayout,
                                     resultError,
                                     Snackbar.LENGTH_LONG).asError().show()
                         }
@@ -523,7 +525,7 @@ open class PasswordActivity : SpecialModeActivity(), AdvancedUnlockFragment.Buil
                 || mSpecialMode == SpecialMode.REGISTRATION)
         ) {
             Log.e(TAG, getString(R.string.autofill_read_only_save))
-            Snackbar.make(activity_password_coordinator_layout,
+            Snackbar.make(coordinatorLayout,
                     R.string.autofill_read_only_save,
                     Snackbar.LENGTH_LONG).asError().show()
         } else {