Created an extension function that can be used to hide the keyboard from any view and used that extension function to add the behavior of hiding the keyboard when a EditText loses focus which was included in a custom view MyTextInputEditText. Then used that class in all EditText fields in SendTransactionFragment, ReceiveTransactionFragment, ImportBrainkeyFragment and CreateAccountFragment to introduce the described behavior.

app/src/main/java/cy/agorise/bitsybitshareswallet/utils/Extensions.kt

@@ -1,7 +1,10 @@
 package cy.agorise.bitsybitshareswallet.utils
 
+import android.app.Activity
 import android.content.Context
 import android.content.res.ColorStateList
+import android.view.View
+import android.view.inputmethod.InputMethodManager
 import android.widget.Toast
 import androidx.core.content.ContextCompat
 import com.google.android.material.floatingactionbutton.FloatingActionButton
@@ -42,4 +45,12 @@ fun String.containsDigits(): Boolean {
  */
 fun String.containsVowels(): Boolean {
     return Pattern.matches("[aeiou]", this)
+}
+
+/**
+ * Allows to hide the Keyboard from any view
+ */
+fun View.hideKeyboard(){
+    val inputMethodManager = context.getSystemService(Activity.INPUT_METHOD_SERVICE) as InputMethodManager
+    inputMethodManager.hideSoftInputFromWindow(this.windowToken, 0)
 }

app/src/main/java/cy/agorise/bitsybitshareswallet/views/MyTextInputEditText.java

@@ -1,43 +0,0 @@
-package cy.agorise.bitsybitshareswallet.views;
-
-import android.content.Context;
-import android.util.AttributeSet;
-import android.view.inputmethod.EditorInfo;
-import android.view.inputmethod.InputConnection;
-
-import com.google.android.material.textfield.TextInputEditText;
-
-// An EditText that lets you use actions ("Done", "Go", etc.) on multi-line edits.
-public class MyTextInputEditText extends TextInputEditText
-{
-    public MyTextInputEditText(Context context)
-    {
-        super(context);
-    }
-
-    public MyTextInputEditText(Context context, AttributeSet attrs)
-    {
-        super(context, attrs);
-    }
-
-    public MyTextInputEditText(Context context, AttributeSet attrs, int defStyle)
-    {
-        super(context, attrs, defStyle);
-    }
-
-    @Override
-    public InputConnection onCreateInputConnection(EditorInfo outAttrs) {
-        InputConnection connection = super.onCreateInputConnection(outAttrs);
-        int imeActions = outAttrs.imeOptions&EditorInfo.IME_MASK_ACTION;
-        if ((imeActions&EditorInfo.IME_ACTION_DONE) != 0) {
-            // clear the existing action
-            outAttrs.imeOptions ^= imeActions;
-            // set the DONE action
-            outAttrs.imeOptions |= EditorInfo.IME_ACTION_DONE;
-        }
-        if ((outAttrs.imeOptions&EditorInfo.IME_FLAG_NO_ENTER_ACTION) != 0) {
-            outAttrs.imeOptions &= ~EditorInfo.IME_FLAG_NO_ENTER_ACTION;
-        }
-        return connection;
-    }
-}

app/src/main/java/cy/agorise/bitsybitshareswallet/views/MyTextInputEditText.kt

@@ -0,0 +1,37 @@
+package cy.agorise.bitsybitshareswallet.views
+
+import android.content.Context
+import android.graphics.Rect
+import android.util.AttributeSet
+import android.view.inputmethod.EditorInfo
+import android.view.inputmethod.InputConnection
+import com.google.android.material.textfield.TextInputEditText
+import cy.agorise.bitsybitshareswallet.utils.hideKeyboard
+
+
+/**
+ * A TextInputEditText that hides the keyboard when the focus is removed from it and also lets you
+ * use actions ("Done", "Go", etc.) on multi-line edits.
+ */
+class MyTextInputEditText(context: Context?, attrs: AttributeSet?) : TextInputEditText(context, attrs){
+
+    override fun onCreateInputConnection(outAttrs: EditorInfo): InputConnection {
+        val connection = super.onCreateInputConnection(outAttrs)
+        val imeActions = outAttrs.imeOptions and EditorInfo.IME_MASK_ACTION
+        if (imeActions and EditorInfo.IME_ACTION_DONE != 0) {
+            // clear the existing action
+            outAttrs.imeOptions = outAttrs.imeOptions xor imeActions
+            // set the DONE action
+            outAttrs.imeOptions = outAttrs.imeOptions or EditorInfo.IME_ACTION_DONE
+        }
+        if (outAttrs.imeOptions and EditorInfo.IME_FLAG_NO_ENTER_ACTION != 0) {
+            outAttrs.imeOptions = outAttrs.imeOptions and EditorInfo.IME_FLAG_NO_ENTER_ACTION.inv()
+        }
+        return connection
+    }
+
+    override fun onFocusChanged(focused: Boolean, direction: Int, previouslyFocusedRect: Rect?) {
+        super.onFocusChanged(focused, direction, previouslyFocusedRect)
+        if (!focused) this.hideKeyboard()
+    }
+}

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

@@ -9,39 +9,26 @@
     android:paddingLeft="@dimen/activity_horizontal_margin"
     android:paddingRight="@dimen/activity_horizontal_margin"
     android:paddingTop="@dimen/activity_vertical_margin"
-    android:paddingBottom="@dimen/activity_vertical_margin">
+    android:paddingBottom="@dimen/activity_vertical_margin"
+    android:focusable="true"
+    android:focusableInTouchMode="true"
+    android:clickable="true">
 
-    <RelativeLayout
+    <com.google.android.material.textfield.TextInputLayout
+        android:id="@+id/tilAccountName"
+        style="@style/Widget.Bitsy.TextInputLayout"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
-        android:gravity="center_vertical">
+        android:hint="@string/text__bitshares_account_name">
-        <com.google.android.material.textfield.TextInputLayout
+
-            android:id="@+id/tilAccountName"
+        <cy.agorise.bitsybitshareswallet.views.MyTextInputEditText
-            style="@style/Widget.Bitsy.TextInputLayout"
+            android:id="@+id/tietAccountName"
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
-            android:hint="@string/text__bitshares_account_name">
+            android:inputType="text"
-
+            android:digits="abcdefghijklmnopqrstuvwxyz0123456789-"
-            <com.google.android.material.textfield.TextInputEditText
+            android:singleLine="true"/>
-                android:id="@+id/tietAccountName"
+    </com.google.android.material.textfield.TextInputLayout>
-                android:layout_width="match_parent"
-                android:layout_height="wrap_content"
-                android:inputType="text"
-                android:digits="abcdefghijklmnopqrstuvwxyz0123456789-"
-                android:singleLine="true"/>
-        </com.google.android.material.textfield.TextInputLayout>
-
-        <!--<com.github.ybq.android.spinkit.SpinKitView-->
-            <!--android:id="@+id/spin_kit"-->
-            <!--android:layout_width="20dp"-->
-            <!--android:layout_height="20dp"-->
-            <!--android:layout_marginEnd="15dp"-->
-            <!--android:layout_alignParentEnd="true"-->
-            <!--android:layout_centerVertical="true"-->
-            <!--android:visibility="invisible"-->
-            <!--app:SpinKit_Color="@color/colorAccent"-->
-            <!--style="@style/SpinKitView.Small.ThreeBounce" />-->
-    </RelativeLayout>
 
     <com.google.android.material.textfield.TextInputLayout
         android:id="@+id/tilPin"
@@ -52,7 +39,7 @@
         android:hint="@string/text_field__6_digit_pin"
         app:passwordToggleEnabled="true">
 
-        <com.google.android.material.textfield.TextInputEditText
+        <cy.agorise.bitsybitshareswallet.views.MyTextInputEditText
             android:id="@+id/tietPin"
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
@@ -69,7 +56,7 @@
         android:hint="@string/text_field__confirm_pin"
         app:passwordToggleEnabled="true">
 
-        <com.google.android.material.textfield.TextInputEditText
+        <cy.agorise.bitsybitshareswallet.views.MyTextInputEditText
             android:id="@+id/tietPinConfirmation"
             android:layout_width="match_parent"
             android:layout_height="wrap_content"

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

@@ -18,7 +18,10 @@
         <LinearLayout 
             android:layout_width="match_parent" 
             android:layout_height="wrap_content"
-            android:orientation="vertical">
+            android:orientation="vertical"
+            android:focusable="true"
+            android:focusableInTouchMode="true"
+            android:clickable="true">
 
             <com.google.android.material.textfield.TextInputLayout
                 android:id="@+id/tilPin"
@@ -31,7 +34,7 @@
                 android:hint="@string/text_field__6_digit_pin"
                 app:passwordToggleEnabled="true">
 
-                <com.google.android.material.textfield.TextInputEditText
+                <cy.agorise.bitsybitshareswallet.views.MyTextInputEditText
                     android:id="@+id/tietPin"
                     android:layout_width="match_parent"
                     android:layout_height="wrap_content"
@@ -51,7 +54,7 @@
                 android:hint="@string/text_field__confirm_pin"
                 app:passwordToggleEnabled="true">
 
-                <com.google.android.material.textfield.TextInputEditText
+                <cy.agorise.bitsybitshareswallet.views.MyTextInputEditText
                     android:id="@+id/tietPinConfirmation"
                     android:layout_width="match_parent"
                     android:layout_height="wrap_content"

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

@@ -5,6 +5,9 @@
     xmlns:app="http://schemas.android.com/apk/res-auto"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
+    android:focusable="true"
+    android:focusableInTouchMode="true"
+    android:clickable="true"
     tools:context=".fragments.ReceiveTransactionFragment">
 
     <androidx.constraintlayout.widget.Guideline
@@ -27,7 +30,7 @@
         app:layout_constraintStart_toStartOf="parent"
         app:layout_constraintEnd_toStartOf="@id/centeredVerticalGuideline">
 
-        <com.google.android.material.textfield.TextInputEditText
+        <cy.agorise.bitsybitshareswallet.views.MyTextInputEditText
             android:id="@+id/tietAmount"
             android:layout_width="match_parent"
             android:layout_height="wrap_content"

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

@@ -4,14 +4,17 @@
     xmlns:tools="http://schemas.android.com/tools"
     xmlns:app="http://schemas.android.com/apk/res-auto"
     android:layout_width="match_parent"
-    android:layout_height="match_parent">
+    android:layout_height="match_parent"
+    tools:context=".fragments.SendTransactionFragment">
 
     <androidx.constraintlayout.widget.ConstraintLayout
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
         android:paddingTop="@dimen/activity_vertical_margin"
         android:paddingBottom="@dimen/activity_vertical_margin"
-        tools:context=".fragments.SendTransactionFragment">
+        android:focusable="true"
+        android:focusableInTouchMode="true"
+        android:clickable="true">
 
         <androidx.constraintlayout.widget.Guideline
             android:id="@+id/centeredVerticalGuideline"
@@ -37,7 +40,7 @@
             android:hint="@string/text__to"
             app:layout_constraintTop_toTopOf="parent">
 
-            <com.google.android.material.textfield.TextInputEditText
+            <cy.agorise.bitsybitshareswallet.views.MyTextInputEditText
                 android:id="@+id/tietTo"
                 android:layout_width="match_parent"
                 android:layout_height="wrap_content"
@@ -61,7 +64,7 @@
             app:layout_constraintStart_toStartOf="parent"
             app:layout_constraintEnd_toStartOf="@id/centeredVerticalGuideline">
 
-            <com.google.android.material.textfield.TextInputEditText
+            <cy.agorise.bitsybitshareswallet.views.MyTextInputEditText
                 android:id="@+id/tietAmount"
                 android:layout_width="match_parent"
                 android:layout_height="wrap_content"
@@ -113,7 +116,7 @@
             android:hint="@string/text__memo"
             app:layout_constraintTop_toBottomOf="@id/tilAmount">
 
-            <com.google.android.material.textfield.TextInputEditText
+            <cy.agorise.bitsybitshareswallet.views.MyTextInputEditText
                 android:id="@+id/tietMemo"
                 android:layout_width="match_parent"
                 android:layout_height="wrap_content"