Created PatternSecurityLockDialog, which will be in charge of creating and confirming a new Pattern of validating the existing one, with a logic similar to PINSecurityLockDialog's. Created basic PatternSecurityLockDialog with a UI that resembles Android's.

app/src/main/java/cy/agorise/bitsybitshareswallet/fragments/PatternSecurityLockDialog.kt

@@ -0,0 +1,75 @@
+package cy.agorise.bitsybitshareswallet.fragments
+
+import android.os.Bundle
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import cy.agorise.bitsybitshareswallet.R
+import kotlinx.android.synthetic.main.dialog_pattern_security_lock.*
+import com.andrognito.patternlockview.PatternLockView
+import com.andrognito.patternlockview.listener.PatternLockViewListener
+import cy.agorise.bitsybitshareswallet.utils.toast
+
+
+/**
+ * Contains all the specific logic to create and confirm a new Pattern or verifying the validity of the current one.
+ */
+class PatternSecurityLockDialog : BaseSecurityLockDialog() {
+
+    companion object {
+        const val TAG = "PatternSecurityLockDialog"
+    }
+
+    override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? {
+
+        return inflater.inflate(R.layout.dialog_pattern_security_lock, container, false)
+    }
+
+    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
+        super.onViewCreated(view, savedInstanceState)
+
+        setupScreen()
+
+        patternLockView.addPatternLockListener(mPatternLockViewListener)
+    }
+
+    private val mPatternLockViewListener = object : PatternLockViewListener {
+        override fun onStarted() {
+            context?.toast("Pattern started")
+        }
+
+        override fun onProgress(progressPattern: List<PatternLockView.Dot>) {
+            tvMessage.text = getString(R.string.msg__release_finger)
+        }
+
+        override fun onComplete(pattern: List<PatternLockView.Dot>) {
+            if (pattern.size < 4) {
+                patternLockView.setViewMode(PatternLockView.PatternViewMode.WRONG)
+            }
+        }
+
+        override fun onCleared() {
+            context?.toast("Pattern has been cleared")
+        }
+    }
+
+    private fun setupScreen() {
+        when (currentStep) {
+            STEP_SECURITY_LOCK_VERIFY -> {
+                tvTitle.text = getString(R.string.title__re_enter_your_pattern)
+                tvSubTitle.text = getString(R.string.msg__enter_your_pattern)
+                btnClear.visibility = View.INVISIBLE
+            }
+            STEP_SECURITY_LOCK_CREATE -> {
+                tvTitle.text = getString(R.string.title__set_bitsy_screen_lock)
+                tvSubTitle.text = getString(R.string.msg__set_bitsy_pattern)
+                btnClear.visibility = View.INVISIBLE
+            }
+            STEP_SECURITY_LOCK_CONFIRM -> {
+                tvTitle.text = getString(R.string.title__re_enter_your_pin)
+                tvSubTitle.text = ""
+                tvSubTitle.visibility = View.GONE
+            }
+        }
+    }
+}

app/src/main/java/cy/agorise/bitsybitshareswallet/fragments/SettingsFragment.kt

@@ -233,19 +233,23 @@ class SettingsFragment : Fragment(), ServiceConnection, BaseSecurityLockDialog.O
      * @return                      true if the action was handled, false otherwise
      */
     private fun verifySecurityLock(securityLockSelected: Int, actionIdentifier: Int): Boolean {
+        // Args used for both PIN and Pattern options
+        val args = Bundle()
+        args.putInt(BaseSecurityLockDialog.KEY_STEP_SECURITY_LOCK,
+            BaseSecurityLockDialog.STEP_SECURITY_LOCK_VERIFY)
+        args.putInt(BaseSecurityLockDialog.KEY_ACTION_IDENTIFIER, actionIdentifier)
+
         return when (securityLockSelected) {
             0 -> { /* PIN */
                 val pinFrag = PINSecurityLockDialog()
-                val args = Bundle()
-                args.putInt(BaseSecurityLockDialog.KEY_STEP_SECURITY_LOCK,
-                    BaseSecurityLockDialog.STEP_SECURITY_LOCK_VERIFY)
-                args.putInt(BaseSecurityLockDialog.KEY_ACTION_IDENTIFIER, actionIdentifier)
                 pinFrag.arguments = args
                 pinFrag.show(childFragmentManager, "pin_security_lock_tag")
                 true
             }
             1 -> { /* Pattern */
-
+                val patternFrag = PatternSecurityLockDialog()
+                patternFrag.arguments = args
+                patternFrag.show(childFragmentManager, "pattern_security_lock_tag")
                 true
             }
             else -> { /* None */
@@ -281,19 +285,23 @@ class SettingsFragment : Fragment(), ServiceConnection, BaseSecurityLockDialog.O
         context?.let {
             MaterialDialog(it).show {
                 title(R.string.title__security_dialog)
-                listItems(R.array.security_lock_options) {dialog, index, text ->
+                listItems(R.array.security_lock_options) {_, index, _ ->
+                    // Args used for both PIN and Pattern options
+                    val args = Bundle()
+                    args.putInt(BaseSecurityLockDialog.KEY_STEP_SECURITY_LOCK,
+                        BaseSecurityLockDialog.STEP_SECURITY_LOCK_CREATE)
+                    args.putInt(BaseSecurityLockDialog.KEY_ACTION_IDENTIFIER, -1)
+
                     when (index) {
                         0 -> { /* PIN */
                             val pinFrag = PINSecurityLockDialog()
-                            val args = Bundle()
-                            args.putInt(BaseSecurityLockDialog.KEY_STEP_SECURITY_LOCK,
-                                BaseSecurityLockDialog.STEP_SECURITY_LOCK_CREATE)
-                            args.putInt(BaseSecurityLockDialog.KEY_ACTION_IDENTIFIER, -1)
                             pinFrag.arguments = args
                             pinFrag.show(childFragmentManager, "pin_security_lock_tag")
                         }
                         1 -> { /* Pattern */
-
+                            val patternFrag = PatternSecurityLockDialog()
+                            patternFrag.arguments = args
+                            patternFrag.show(childFragmentManager, "pattern_security_lock_tag")
                         }
                         else -> { /* None */
                             PreferenceManager.getDefaultSharedPreferences(context).edit()

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

@@ -0,0 +1,86 @@
+<?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"
+    android:paddingTop="@dimen/activity_vertical_margin"
+    android:paddingBottom="@dimen/activity_vertical_margin"
+    android:paddingStart="@dimen/activity_horizontal_margin"
+    android:paddingEnd="@dimen/activity_horizontal_margin"
+    android:orientation="vertical"
+    tools:context=".fragments.PINSecurityLockDialog">
+
+    <ImageView
+        android:id="@+id/ivLock"
+        android:layout_width="32dp"
+        android:layout_height="32dp"
+        android:layout_marginTop="@dimen/spacing_same_topic"
+        android:src="@drawable/ic_lock"
+        app:layout_constraintTop_toTopOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        android:contentDescription="@string/title__re_enter_your_pin" />
+
+    <TextView
+        android:id="@+id/tvTitle"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="@dimen/spacing_same_topic"
+        tools:text="Enter your pattern"
+        android:textAppearance="@style/TextAppearance.Bitsy.Headline5"
+        app:layout_constraintTop_toBottomOf="@id/ivLock" />
+
+    <TextView
+        android:id="@+id/tvSubTitle"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="8dp"
+        tools:text="Enter your BiTSy pattern to continue"
+        android:textAppearance="@style/TextAppearance.Bitsy.Body1"
+        app:layout_constraintTop_toBottomOf="@id/tvTitle"/>
+
+    <TextView
+        android:id="@+id/tvMessage"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        tools:text="Draw an unlock pattern"
+        android:textAlignment="center"
+        app:layout_constraintBottom_toTopOf="@id/patternLockView"
+        app:layout_constraintTop_toBottomOf="@id/tvSubTitle"
+        app:layout_constraintVertical_chainStyle="spread"
+        tools:layout_editor_absoluteX="16dp" />
+
+    <com.andrognito.patternlockview.PatternLockView
+        android:id="@+id/patternLockView"
+        android:layout_width="0dp"
+        android:layout_height="0dp"
+        android:layout_marginBottom="@dimen/spacing_different_topic"
+        app:normalStateColor="?android:textColorSecondary"
+        app:correctStateColor="@color/colorPrimary"
+        app:wrongStateColor="@color/colorSend"
+        app:layout_constraintDimensionRatio="h,1:1"
+        app:layout_constraintTop_toBottomOf="@id/tvMessage"
+        app:layout_constraintBottom_toTopOf="@id/btnClear"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintEnd_toEndOf="parent" />
+
+    <Button
+        android:id="@+id/btnClear"
+        style="@style/Widget.Bitsy.Button.TextButton"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="@string/btn__clear"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintBottom_toBottomOf="parent"/>
+
+    <Button
+        android:id="@+id/btnNext"
+        style="@style/Widget.Bitsy.Button"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="@string/btn__next"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintBottom_toBottomOf="parent"/>
+
+</androidx.constraintlayout.widget.ConstraintLayout>

app/src/main/res/values-es/strings.xml

@@ -151,5 +151,11 @@
     <string name="msg__set_bitsy_pin">Por seguridad, crea un PIN para BiTSy</string>
     <string name="msg__min_pin_length">El PIN debe tener al menos 6 dígitos</string>
     <string name="title__pins_dont_match">El PIN no concuerda</string>
+    <string name="title__re_enter_your_pattern">Reingresa tu patrón</string>
+    <string name="msg__enter_your_pattern">Ingresa tu patrón de BiTSy para continuar</string>
+    <string name="msg__set_bitsy_pattern">Por seguridad, crea un patrón para BiTSy</string>
+    <string name="msg__release_finger">Suelta tu dedo al terminar</string>
+    <string name="btn__clear">Limpiar</string>
+    <string name="btn__next">Siguiente</string>
 
 </resources>

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

@@ -152,5 +152,11 @@
     <string name="msg__set_bitsy_pin">For security, set BiTSy PIN</string>
     <string name="msg__min_pin_length">PIN must be at least 6 digits</string>
     <string name="title__pins_dont_match">PINs don\'t match</string>
+    <string name="title__re_enter_your_pattern">Re-enter your pattern</string>
+    <string name="msg__enter_your_pattern">Enter your BiTSy pattern to continue</string>
+    <string name="msg__set_bitsy_pattern">For security, set BiTSy pattern</string>
+    <string name="msg__release_finger">Release finger when done</string>
+    <string name="btn__clear">Clear</string>
+    <string name="btn__next">Next</string>
 
 </resources>