improvements for scan behavior

zcash-android-wallet-app/app/build.gradle

@@ -15,7 +15,7 @@ android {
         minSdkVersion buildConfig.minSdkVersion
         targetSdkVersion buildConfig.targetSdkVersion
         versionCode 17 // todo: change this to 1_00_04 format, once we graduate beyond zero for the major version number because leading zeros indicate on octal number.
-        versionName "0.4.2-alpha"
+        versionName "0.4.5-alpha"
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
         vectorDrawables.useSupportLibrary = true
         multiDexEnabled true

zcash-android-wallet-app/app/src/main/java/cash/z/android/wallet/ui/fragment/AboutFragment.kt

@@ -7,6 +7,7 @@ import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
 import androidx.databinding.DataBindingUtil
+import cash.z.android.wallet.BuildConfig
 import cash.z.android.wallet.R
 import cash.z.android.wallet.databinding.FragmentAboutBinding
 import dagger.Module
@@ -25,6 +26,7 @@ class AboutFragment : BaseFragment() {
 
     override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
         super.onViewCreated(view, savedInstanceState)
+        binding.textAboutVersionValue.text = BuildConfig.VERSION_NAME
         binding.textAboutLicensingValue.setOnClickListener {
             openUrl("https://z.cash/trademark-policy/")
         }

zcash-android-wallet-app/app/src/main/java/cash/z/android/wallet/ui/fragment/ScanFragment.kt

@@ -17,7 +17,6 @@ import cash.z.android.cameraview.CameraView
 import cash.z.android.wallet.R
 import cash.z.android.wallet.databinding.FragmentScanBinding
 import cash.z.android.wallet.extention.Toaster
-import cash.z.android.wallet.ui.activity.MainActivity
 import com.google.firebase.ml.vision.FirebaseVision
 import com.google.firebase.ml.vision.barcode.FirebaseVisionBarcode
 import com.google.firebase.ml.vision.barcode.FirebaseVisionBarcodeDetectorOptions
@@ -193,7 +192,9 @@ class ScanFragment : BaseFragment() {
     override fun onRequestPermissionsResult(requestCode: Int, permissions: Array<out String>, grantResults: IntArray) {
         super.onRequestPermissionsResult(requestCode, permissions, grantResults)
         if (allPermissionsGranted()) {
-            onStartCamera()
+            view!!.postDelayed({
+                onStartCamera()
+            },2000L) // TODO: remove this temp hack to sidestep crash when permissions were not available
         }
     }
 
@@ -234,8 +235,6 @@ class ScanFragment : BaseFragment() {
                     if (results.isNotEmpty()) {
                         val barcode = results[0]
                         val value = barcode.rawValue
-                        val message = "found: $value"
-                        Toaster.short(message)
                         onScanSuccess(value!!)
                         // TODO: highlight the barcode
                         var bounds = barcode.boundingBox
@@ -251,10 +250,8 @@ class ScanFragment : BaseFragment() {
         binding.cameraView.stop()
         if (!pendingSuccess) {
             pendingSuccess = true
-            with(binding.cameraView) {
-                postDelayed({
-                    barcodeCallback?.onBarcodeScanned(value)
-                }, 3000L)
+            binding.cameraView.post {
+                barcodeCallback?.onBarcodeScanned(value)
             }
         }
     }

zcash-android-wallet-app/app/src/main/res/layout/fragment_about.xml

@@ -156,7 +156,6 @@
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
             android:layout_marginEnd="32dp"
-            android:text="0.4.2-alpha"
             android:textColor="@color/zcashGray_dark"
             android:textSize="@dimen/text_size_body_2"
             app:layout_constraintBottom_toTopOf="@id/text_about_updated_value"

zcash-android-wallet-app/app/src/main/res/layout/fragment_send.xml

@@ -462,6 +462,7 @@
                 transition_active_transaction_bg,
                 text_value_subheader,
                 text_dollar_symbol_subheader,
+                image_zec_symbol_subheader,
                 image_zec_symbol_header,
                 text_dollar_symbol_header,
                 text_amount_background,