Add methods to remember the currently selected Spinner's Asset and make sure that selection is not lost when the balances table is updated. Make an improvement to the camera feed UI.

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

@@ -7,6 +7,7 @@ import android.util.Log
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
+import android.widget.AdapterView
 import android.widget.Toast
 import androidx.core.content.ContextCompat
 import androidx.fragment.app.Fragment
@@ -40,6 +41,8 @@ class SendTransactionFragment : Fragment(), ZXingScannerView.ResultHandler {
 
     private var mAssetsAdapter: AssetsAdapter? = null
 
+    private var selectedAssetSymbol = ""
+
 
     override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? {
         return inflater.inflate(R.layout.fragment_send_transaction, container, false)
@@ -59,7 +62,25 @@ class SendTransactionFragment : Fragment(), ZXingScannerView.ResultHandler {
             mBalancesDetails = balancesDetails
             mAssetsAdapter = AssetsAdapter(context!!, android.R.layout.simple_spinner_item, mBalancesDetails!!)
             spAsset.adapter = mAssetsAdapter
+
+            // Try to select the selectedAssetSymbol
+            for (i in 0 until mAssetsAdapter!!.count) {
+                if (mAssetsAdapter!!.getItem(i)!!.symbol == selectedAssetSymbol) {
+                    spAsset.setSelection(i)
+                    break
+                }
+            }
         })
+
+        spAsset.onItemSelectedListener = object : AdapterView.OnItemSelectedListener{
+            override fun onNothingSelected(parent: AdapterView<*>?) { }
+
+            override fun onItemSelected(parent: AdapterView<*>?, view: View?, position: Int, id: Long) {
+                selectedAssetSymbol = mAssetsAdapter!!.getItem(position)!!.symbol
+            }
+        }
+
+        fabSendTransaction.setOnClickListener { validateFields() }
     }
 
     private fun verifyCameraPermission() {
@@ -140,6 +161,10 @@ class SendTransactionFragment : Fragment(), ZXingScannerView.ResultHandler {
         }
     }
 
+    private fun validateFields() {
+
+    }
+
     override fun onResume() {
         super.onResume()
         if (isCameraPreviewVisible)

app/src/main/res/drawable/camera_view_background.xml

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<shape xmlns:android="http://schemas.android.com/apk/res/android" >
+    <corners android:radius="10dp" />
+    <solid android:color="#111" />
+</shape>

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

@@ -123,12 +123,11 @@
 
         <View
             android:id="@+id/viewCamera"
-            android:background="@color/black"
             android:layout_width="0dp"
             android:layout_height="0dp"
             android:layout_marginTop="@dimen/spacing_same_topic"
             android:layout_marginStart="@dimen/activity_horizontal_margin"
-            android:visibility="visible"
+            android:background="@drawable/camera_view_background"
             app:layout_constraintDimensionRatio="1:1"
             app:layout_constraintTop_toBottomOf="@+id/tvScan"
             app:layout_constraintBottom_toBottomOf="parent"
@@ -166,7 +165,7 @@
             app:layout_constraintBottom_toBottomOf="@id/viewCamera"/>
 
         <com.google.android.material.floatingactionbutton.FloatingActionButton
-            android:id="@+id/btnSend"
+            android:id="@+id/fabSendTransaction"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
             android:layout_marginTop="15dp"