Move from onBackPressed (was deprecated)

app/src/main/java/org/pixeldroid/app/MainActivity.kt

@@ -12,6 +12,7 @@ import android.util.Log
 import android.view.MenuItem
 import android.view.View
 import android.widget.ImageView
+import androidx.activity.addCallback
 import androidx.activity.result.contract.ActivityResultContracts
 import androidx.appcompat.app.AppCompatActivity
 import androidx.core.app.ActivityCompat
@@ -239,6 +240,18 @@ class MainActivity : BaseActivity() {
             }
             false
         }
+
+        // Closes the drawer if it is open, when we press the back button
+        onBackPressedDispatcher.addCallback(this) {
+            // Handle the back button event
+            if(binding.drawerLayout.isDrawerOpen(GravityCompat.START)){
+                binding.drawerLayout.closeDrawer(GravityCompat.START)
+            }
+            else {
+                this.isEnabled = false
+                super.onBackPressedDispatcher.onBackPressed()
+            }
+        }
     }
 
     private fun logOut(){
@@ -481,16 +494,4 @@ class MainActivity : BaseActivity() {
         }
         startActivity(intent)
     }
-
-    /**
-     * Closes the drawer if it is open, when we press the back button
-     */
-    override fun onBackPressed() {
-        if(binding.drawerLayout.isDrawerOpen(GravityCompat.START)){
-            binding.drawerLayout.closeDrawer(GravityCompat.START)
-        } else {
-            super.onBackPressed()
-        }
-    }
-
 }

app/src/main/java/org/pixeldroid/app/profile/EditProfileActivity.kt

@@ -6,8 +6,10 @@ import android.os.Bundle
 import android.view.Menu
 import android.view.MenuItem
 import android.view.View
+import androidx.activity.addCallback
 import androidx.activity.result.contract.ActivityResultContracts
 import androidx.activity.viewModels
+import androidx.core.view.GravityCompat
 import androidx.core.widget.doAfterTextChanged
 import androidx.lifecycle.Lifecycle
 import androidx.lifecycle.lifecycleScope
@@ -37,6 +39,23 @@ class EditProfileActivity : BaseActivity() {
         val _model: EditProfileViewModel by viewModels { EditProfileViewModelFactory(application) }
         model = _model
 
+        onBackPressedDispatcher.addCallback(this) {
+            // Handle the back button event
+            if(model.madeChanges()){
+                MaterialAlertDialogBuilder(binding.root.context).apply {
+                    setMessage(getString(R.string.profile_save_changes))
+                    setNegativeButton(android.R.string.cancel) { _, _ -> }
+                    setPositiveButton(android.R.string.ok) { _, _ ->
+                        this@addCallback.isEnabled = false
+                        super.onBackPressedDispatcher.onBackPressed()
+                    }
+                }.show()
+            } else {
+                this.isEnabled = false
+                super.onBackPressedDispatcher.onBackPressed()
+            }
+        }
+
         lifecycleScope.launch {
             repeatOnLifecycle(Lifecycle.State.STARTED) {
                 model.uiState.collect { uiState ->
@@ -132,18 +151,6 @@ class EditProfileActivity : BaseActivity() {
         return true
     }
 
-    @Deprecated("Deprecated in Java")
-    override fun onBackPressed() {
-        if(model.madeChanges()){
-            MaterialAlertDialogBuilder(binding.root.context).apply {
-                setMessage(getString(R.string.profile_save_changes))
-                setNegativeButton(android.R.string.cancel) { _, _ -> }
-                setPositiveButton(android.R.string.ok) { _, _ -> super.onBackPressed()}
-            }.show()
-        }
-        else super.onBackPressed()
-    }
-
     override fun onOptionsItemSelected(item: MenuItem): Boolean {
         when (item.itemId){
             R.id.action_apply -> {

app/src/main/java/org/pixeldroid/app/settings/SettingsActivity.kt

@@ -6,6 +6,7 @@ import android.content.SharedPreferences
 import android.content.res.XmlResourceParser
 import android.os.Build
 import android.os.Bundle
+import androidx.activity.addCallback
 import androidx.appcompat.app.AppCompatDelegate
 import androidx.core.os.LocaleListCompat
 import androidx.fragment.app.DialogFragment
@@ -37,6 +38,21 @@ class SettingsActivity : ThemedActivity(), SharedPreferences.OnSharedPreferenceC
             .commit()
         supportActionBar?.setDisplayHomeAsUpEnabled(true)
 
+        onBackPressedDispatcher.addCallback(this) {
+            // Handle the back button event
+            // If a setting (for example language or theme) was changed, the main activity should be
+            // started without history so that the change is applied to the whole back stack
+            if (restartMainOnExit) {
+                val intent = Intent(this@SettingsActivity, MainActivity::class.java)
+                intent.flags = Intent.FLAG_ACTIVITY_NEW_TASK or Intent.FLAG_ACTIVITY_CLEAR_TASK
+                super.startActivity(intent)
+            } else {
+                super.onBackPressedDispatcher.onBackPressed()
+            }
+
+        }
+
+
         restartMainOnExit = intent.getBooleanExtra("restartMain", false)
     }
 
@@ -54,17 +70,6 @@ class SettingsActivity : ThemedActivity(), SharedPreferences.OnSharedPreferenceC
         )
     }
 
-    override fun onBackPressed() {
-        // If a setting (for example language or theme) was changed, the main activity should be
-        // started without history so that the change is applied to the whole back stack
-        if (restartMainOnExit) {
-            val intent = Intent(this, MainActivity::class.java)
-            intent.flags = Intent.FLAG_ACTIVITY_NEW_TASK or Intent.FLAG_ACTIVITY_CLEAR_TASK
-            super.startActivity(intent)
-        } else {
-            super.onBackPressed()
-        }
-    }
     override fun onSharedPreferenceChanged(sharedPreferences: SharedPreferences?, key: String?) {
         sharedPreferences?.let {
             when (key) {

app/src/main/java/org/pixeldroid/app/utils/BaseActivity.kt

@@ -18,7 +18,7 @@ open class BaseActivity : org.pixeldroid.common.ThemedActivity() {
     }
 
     override fun onSupportNavigateUp(): Boolean {
-        onBackPressed()
+        onBackPressedDispatcher.onBackPressed()
         return true
     }
 }