Disable default keyboard dismiss behaviour

Signed-off-by: alperozturk <alper_ozturk@proton.me>

app/src/main/java/com/owncloud/android/ui/activity/PassCodeActivity.java

@@ -42,6 +42,7 @@ import com.owncloud.android.R;
 import com.owncloud.android.authentication.PassCodeManager;
 import com.owncloud.android.databinding.PasscodelockBinding;
 import com.owncloud.android.lib.common.utils.Log_OC;
+import com.owncloud.android.ui.components.PassCodeEditText;
 import com.owncloud.android.utils.theme.ViewThemeUtils;
 
 import java.util.Arrays;
@@ -74,7 +75,7 @@ public class PassCodeActivity extends AppCompatActivity implements Injectable {
     @Inject PassCodeManager passCodeManager;
     @Inject ViewThemeUtils viewThemeUtils;
     private PasscodelockBinding binding;
-    private final EditText[] passCodeEditTexts = new EditText[4];
+    private final PassCodeEditText[] passCodeEditTexts = new PassCodeEditText[4];
     private String[] passCodeDigits = {"", "", "", ""};
     private boolean confirmingPassCode;
     private boolean changed = true; // to control that only one blocks jump
@@ -174,7 +175,7 @@ public class PassCodeActivity extends AppCompatActivity implements Injectable {
     @SuppressLint("ClickableViewAccessibility")
     protected void setTextListeners() {
         for (int i = 0; i < passCodeEditTexts.length; i++) {
-            final EditText editText = passCodeEditTexts[i];
+            final PassCodeEditText editText = passCodeEditTexts[i];
             boolean isLast = (i == 3);
 
             editText.addTextChangedListener(new PassCodeDigitTextWatcher(i, isLast));
@@ -276,8 +277,7 @@ public class PassCodeActivity extends AppCompatActivity implements Injectable {
                 (InputMethodManager) getSystemService(INPUT_METHOD_SERVICE);
             inputMethodManager.hideSoftInputFromWindow(
                 focusedView.getWindowToken(),
-                0
-                                                      );
+                0);
         }
     }
 
@@ -412,7 +412,6 @@ public class PassCodeActivity extends AppCompatActivity implements Injectable {
         }
     }
 
-
     @Override
     public void onSaveInstanceState(@NonNull Bundle outState) {
         super.onSaveInstanceState(outState);
@@ -434,6 +433,7 @@ public class PassCodeActivity extends AppCompatActivity implements Injectable {
         PassCodeDigitTextWatcher(int index, boolean lastOne) {
             mIndex = index;
             mLastOne = lastOne;
+
             if (mIndex < 0) {
                 throw new IllegalArgumentException(
                     "Invalid index in " + PassCodeDigitTextWatcher.class.getSimpleName() +
@@ -457,8 +457,13 @@ public class PassCodeActivity extends AppCompatActivity implements Injectable {
         public void afterTextChanged(Editable s) {
             if (s.length() > 0) {
                 if (!confirmingPassCode) {
-                    passCodeDigits[mIndex] = passCodeEditTexts[mIndex].getText().toString();
+                    Editable passCodeText = passCodeEditTexts[mIndex].getText();
+
+                    if (passCodeText != null) {
+                        passCodeDigits[mIndex] = passCodeText.toString();
+                    }
                 }
+
                 passCodeEditTexts[next()].requestFocus();
 
                 if (mLastOne) {

app/src/main/java/com/owncloud/android/ui/components/PassCodeEditText.kt

@@ -0,0 +1,39 @@
+/*
+ * Nextcloud Android client application
+ *
+ * @author Alper Ozturk
+ * Copyright (C) 2023 Alper Ozturk
+ * Copyright (C) 2023 Nextcloud GmbH
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <https://www.gnu.org/licenses/>.
+ */
+package com.owncloud.android.ui.components
+
+import android.content.Context
+import android.util.AttributeSet
+import android.view.KeyEvent
+import androidx.appcompat.widget.AppCompatEditText
+
+class PassCodeEditText(context: Context, attrs: AttributeSet?): AppCompatEditText(context, attrs) {
+
+    override fun onKeyPreIme(keyCode: Int, event: KeyEvent): Boolean {
+        val isBackButtonPressed = (event.keyCode == KeyEvent.KEYCODE_BACK && event.action == KeyEvent.ACTION_UP)
+        if (isBackButtonPressed) {
+            // Override default behaviour and prevent dismissing the keyboard
+            return true
+        }
+        return super.dispatchKeyEvent(event)
+    }
+
+}

app/src/main/res/layout/passcodelock.xml

@@ -69,34 +69,26 @@
                     android:layout_height="wrap_content"
                     android:gravity="center_horizontal">
 
-                    <com.google.android.material.textfield.TextInputEditText
+                    <com.owncloud.android.ui.components.PassCodeEditText
                         android:id="@+id/txt0"
                         style="@style/PassCodeStyle"
-                        android:hint="@string/hidden_character"
-                        android:imeOptions="flagNoExtractUi"
                         android:importantForAutofill="no"
                         tools:text="123">
-                    </com.google.android.material.textfield.TextInputEditText>
+                    </com.owncloud.android.ui.components.PassCodeEditText>
 
-                    <com.google.android.material.textfield.TextInputEditText
+                    <com.owncloud.android.ui.components.PassCodeEditText
                         android:id="@+id/txt1"
                         style="@style/PassCodeStyle"
-                        android:hint="@string/hidden_character"
-                        android:imeOptions="flagNoExtractUi"
                         android:importantForAutofill="no" />
 
-                    <com.google.android.material.textfield.TextInputEditText
+                    <com.owncloud.android.ui.components.PassCodeEditText
                         android:id="@+id/txt2"
                         style="@style/PassCodeStyle"
-                        android:hint="@string/hidden_character"
-                        android:imeOptions="flagNoExtractUi"
                         android:importantForAutofill="no" />
 
-                    <com.google.android.material.textfield.TextInputEditText
+                    <com.owncloud.android.ui.components.PassCodeEditText
                         android:id="@+id/txt3"
                         style="@style/PassCodeStyle"
-                        android:hint="@string/hidden_character"
-                        android:imeOptions="flagNoExtractUi"
                         android:importantForAutofill="no" />
                 </LinearLayout>
 

app/src/main/res/values/styles.xml

@@ -324,6 +324,7 @@
     </style>
 
     <style name="PassCodeStyle">
+        <item name="android:hint">@string/hidden_character</item>
         <item name="android:layout_width">50dp</item>
         <item name="android:layout_height">50dp</item>
         <item name="android:gravity">center</item>