Create AssetsAdapter and use it to populate the asset spinner in the ReceiveTransactionFragment, so the user the asset he wants to receive.

app/src/main/java/cy/agorise/bitsybitshareswallet/activities/ConnectedActivity.kt

@@ -16,7 +16,6 @@ import androidx.lifecycle.ViewModelProviders
 import cy.agorise.bitsybitshareswallet.database.entities.Balance
 import cy.agorise.bitsybitshareswallet.processors.TransfersLoader
 import cy.agorise.bitsybitshareswallet.repositories.AssetRepository
-import cy.agorise.bitsybitshareswallet.repositories.BalanceRepository
 import cy.agorise.bitsybitshareswallet.utils.Constants
 import cy.agorise.bitsybitshareswallet.viewmodels.BalanceViewModel
 import cy.agorise.bitsybitshareswallet.viewmodels.UserAccountViewModel
@@ -43,7 +42,6 @@ abstract class ConnectedActivity : AppCompatActivity(), ServiceConnection {
     private lateinit var mUserAccountViewModel: UserAccountViewModel
     private lateinit var mBalanceViewModel: BalanceViewModel
 
-    private lateinit var mBalanceRepository: BalanceRepository
     private lateinit var mAssetRepository: AssetRepository
 
     /* Current user account */
@@ -75,7 +73,6 @@ abstract class ConnectedActivity : AppCompatActivity(), ServiceConnection {
         if (userId != "")
             mCurrentAccount = UserAccount(userId)
 
-        mBalanceRepository = BalanceRepository(this)
         mAssetRepository = AssetRepository(this)
 
         // Configure UserAccountViewModel to obtain the missing account ids
@@ -199,7 +196,8 @@ abstract class ConnectedActivity : AppCompatActivity(), ServiceConnection {
 
             balances.add(balance)
         }
-        mBalanceRepository.insertAll(balances)
+
+        mBalanceViewModel.insertAll(balances)
     }
 
     /**

app/src/main/java/cy/agorise/bitsybitshareswallet/adapters/AssetsAdapter.kt

@@ -0,0 +1,40 @@
+package cy.agorise.bitsybitshareswallet.adapters
+
+import android.content.Context
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import android.widget.ArrayAdapter
+import android.widget.TextView
+import cy.agorise.bitsybitshareswallet.database.entities.Asset
+
+class AssetsAdapter(context: Context, resource: Int, data: List<Asset>) :
+    ArrayAdapter<Asset>(context, resource, data) {
+
+    override fun getView(position: Int, convertView: View?, parent: ViewGroup): View {
+        var cv = convertView
+
+        if (cv == null) {
+            val inflater = context.getSystemService(Context.LAYOUT_INFLATER_SERVICE) as LayoutInflater
+            cv = inflater.inflate(android.R.layout.simple_spinner_item, parent, false)
+        }
+
+        val text: TextView = cv!!.findViewById(android.R.id.text1)
+
+        val asset = getItem(position)
+        text.text = asset!!.symbol
+
+        return cv
+    }
+
+    override fun getDropDownView(position: Int, convertView: View?, parent: ViewGroup): View {
+        val inflater = context.getSystemService(Context.LAYOUT_INFLATER_SERVICE) as LayoutInflater
+        val v = inflater.inflate(android.R.layout.simple_spinner_dropdown_item, parent, false)
+        val text: TextView = v.findViewById(android.R.id.text1)
+
+        val asset = getItem(position)
+        text.text = asset!!.symbol
+
+        return v
+    }
+}

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

@@ -8,7 +8,7 @@ import android.util.Log
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
-import android.widget.ArrayAdapter
+import android.widget.AdapterView
 import androidx.fragment.app.Fragment
 import androidx.lifecycle.Observer
 import androidx.lifecycle.ViewModelProviders
@@ -20,6 +20,7 @@ import com.google.zxing.WriterException
 import com.google.zxing.common.BitMatrix
 import com.jakewharton.rxbinding2.widget.RxTextView
 import cy.agorise.bitsybitshareswallet.R
+import cy.agorise.bitsybitshareswallet.adapters.AssetsAdapter
 import cy.agorise.bitsybitshareswallet.utils.Constants
 import cy.agorise.bitsybitshareswallet.viewmodels.AssetViewModel
 import cy.agorise.bitsybitshareswallet.viewmodels.UserAccountViewModel
@@ -47,6 +48,12 @@ class ReceiveTransactionFragment : Fragment() {
 
     private var mAsset: Asset? = null
 
+    private var mAssetsAdapter: AssetsAdapter? = null
+
+    private var mAssets: List<cy.agorise.bitsybitshareswallet.database.entities.Asset>? = null
+
+    private var selectedAssetSymbol = ""
+
     override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? {
         return inflater.inflate(R.layout.fragment_receive_transaction, container, false)
     }
@@ -69,15 +76,29 @@ class ReceiveTransactionFragment : Fragment() {
 
         mAssetViewModel.getAll().observe(this,
             Observer<List<cy.agorise.bitsybitshareswallet.database.entities.Asset>> { assets ->
-                val adapter = ArrayAdapter<cy.agorise.bitsybitshareswallet.database.entities.Asset>(context!!,
-                    android.R.layout.simple_dropdown_item_1line, assets)
-                actvAsset.setAdapter(adapter)
+                mAssets = assets
+                mAssetsAdapter = AssetsAdapter(context!!, android.R.layout.simple_spinner_item, mAssets!!)
+                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
+                    }
+                }
         })
 
-        actvAsset.setOnItemClickListener { parent, _, position, _ ->
-            val asset = parent.adapter.getItem(position) as cy.agorise.bitsybitshareswallet.database.entities.Asset
-            mAsset = Asset(asset.id, asset.symbol, asset.precision)
-            updateQR()
+        spAsset.onItemSelectedListener = object : AdapterView.OnItemSelectedListener{
+            override fun onNothingSelected(parent: AdapterView<*>?) { }
+
+            override fun onItemSelected(parent: AdapterView<*>?, view: View?, position: Int, id: Long) {
+                val asset = mAssetsAdapter!!.getItem(position)!!
+                selectedAssetSymbol = asset.symbol
+
+                mAsset = Asset(asset.id, asset.symbol, asset.precision)
+                updateQR()
+            }
         }
 
         // Use RxJava Debounce to create QR code only after the user stopped typing an amount
@@ -87,18 +108,6 @@ class ReceiveTransactionFragment : Fragment() {
                 .observeOn(AndroidSchedulers.mainThread())
                 .subscribe { updateQR() }
         )
-
-        // Use RxJava Debounce to avoid making calls to the NetworkService on every text change event
-        mDisposables.add(
-            RxTextView.textChanges(actvAsset)
-                .debounce(500, TimeUnit.MILLISECONDS)
-                .filter { it.toString().length < 3 }
-                .observeOn(AndroidSchedulers.mainThread())
-                .subscribe {
-                    mAsset = null
-                    updateQR()
-                }
-        )
     }
 
     private fun updateQR() {

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

@@ -38,28 +38,49 @@
 
     </com.google.android.material.textfield.TextInputLayout>
 
-    <com.google.android.material.textfield.TextInputLayout
-        style="@style/Widget.Bitsy.TextInputLayout"
+    <Spinner
+        android:id="@+id/spAsset"
         android:layout_width="0dp"
-        android:layout_height="0dp"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="12dp"
         android:layout_marginStart="12dp"
-        android:hint="@string/text__asset"
-        app:layout_constraintTop_toTopOf="@id/tilAmount"
-        app:layout_constraintBottom_toBottomOf="@id/tilAmount"
-        app:layout_constraintStart_toEndOf="@id/centeredVerticalGuideline"
-        app:layout_constraintEnd_toEndOf="parent">
+        android:layout_marginEnd="@dimen/activity_horizontal_margin"
+        app:layout_constraintTop_toTopOf="@+id/tilAmount"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toEndOf="@id/centeredVerticalGuideline"/>
 
-        <cy.agorise.bitsybitshareswallet.views.MyTextInputAutoCompleteTextView
-            android:id="@+id/actvAsset"
-            android:layout_width="match_parent"
-            android:layout_height="match_parent"
-            android:paddingStart="12dp"
-            android:paddingEnd="8dp"
-            android:maxLines="1"
-            android:lines="1"
-            android:imeOptions="actionDone"/>
+    <View
+        android:id="@+id/vSpinner"
+        android:layout_width="0dp"
+        android:layout_height="1dp"
+        android:layout_marginTop="12dp"
+        android:background="@color/darkGray"
+        app:layout_constraintTop_toBottomOf="@+id/spAsset"
+        app:layout_constraintEnd_toEndOf="@+id/spAsset"
+        app:layout_constraintStart_toStartOf="@+id/spAsset" />
 
-    </com.google.android.material.textfield.TextInputLayout>
+    <!--<com.google.android.material.textfield.TextInputLayout-->
+        <!--style="@style/Widget.Bitsy.TextInputLayout"-->
+        <!--android:layout_width="0dp"-->
+        <!--android:layout_height="0dp"-->
+        <!--android:layout_marginStart="12dp"-->
+        <!--android:hint="@string/text__asset"-->
+        <!--app:layout_constraintTop_toTopOf="@id/tilAmount"-->
+        <!--app:layout_constraintBottom_toBottomOf="@id/tilAmount"-->
+        <!--app:layout_constraintStart_toEndOf="@id/centeredVerticalGuideline"-->
+        <!--app:layout_constraintEnd_toEndOf="parent">-->
+
+        <!--<cy.agorise.bitsybitshareswallet.views.MyTextInputAutoCompleteTextView-->
+            <!--android:id="@+id/actvAsset"-->
+            <!--android:layout_width="match_parent"-->
+            <!--android:layout_height="match_parent"-->
+            <!--android:paddingStart="12dp"-->
+            <!--android:paddingEnd="8dp"-->
+            <!--android:maxLines="1"-->
+            <!--android:lines="1"-->
+            <!--android:imeOptions="actionDone"/>-->
+
+    <!--</com.google.android.material.textfield.TextInputLayout>-->
 
     <ImageView
         android:id="@+id/ivQR"