- Remove not used library.

- Improve SendTransactionFragment layout to automatically adjust the camera preview to an 4:3 aspect ratio, which in turn avoids the problem that the app was not reading QR Codes.

app/build.gradle

@@ -86,7 +86,6 @@ dependencies {
     implementation 'org.tukaani:xz:1.6'
     implementation 'com.jakewharton:butterknife:8.8.1'
     implementation 'com.github.bilthon:graphenej:0.4.6'
-    implementation 'com.google.zxing:core:3.3.1'
     implementation 'me.dm7.barcodescanner:zxing:1.9.8'
     implementation 'com.github.sjaramillo10:AnimatedTabLayout:1.0.3'
 

app/src/main/java/cy/agorise/crystalwallet/fragments/SendTransactionFragment.java

@@ -12,8 +12,6 @@ import android.content.Intent;
 import android.content.pm.PackageManager;
 import android.graphics.Bitmap;
 import android.graphics.BitmapFactory;
-import android.graphics.Color;
-import android.graphics.drawable.ColorDrawable;
 import android.os.Build;
 import android.os.Bundle;
 import android.os.Handler;
@@ -42,10 +40,6 @@ import android.widget.Toast;
 
 import com.google.zxing.BarcodeFormat;
 import com.google.zxing.Result;
-import com.jaredrummler.materialspinner.MaterialSpinner;
-import com.vincent.filepicker.ToastUtil;
-
-import org.bitcoinj.wallet.SendRequest;
 
 import java.io.File;
 import java.math.RoundingMode;
@@ -63,7 +57,6 @@ import butterknife.OnTextChanged;
 import cy.agorise.crystalwallet.R;
 import cy.agorise.crystalwallet.application.CrystalSecurityMonitor;
 import cy.agorise.crystalwallet.dialogs.material.CrystalDialog;
-import cy.agorise.crystalwallet.dialogs.material.ToastIt;
 import cy.agorise.crystalwallet.enums.CryptoCoin;
 import cy.agorise.crystalwallet.enums.CryptoNet;
 import cy.agorise.crystalwallet.interfaces.OnResponse;
@@ -95,6 +88,8 @@ import static butterknife.internal.Utils.listOf;
 
 public class SendTransactionFragment extends DialogFragment implements UIValidatorListener, ZXingScannerView.ResultHandler {
 
+    private final String TAG = getClass().getName();
+
     SendTransactionValidator sendTransactionValidator;
 
     @BindView(R.id.spFrom)
@@ -125,11 +120,8 @@ public class SendTransactionFragment extends DialogFragment implements UIValidat
     TextView tvMemoError;
     @BindView(R.id.btnSend)
     FloatingActionButton btnSend;
-    @BindView(R.id.btnCancel)
-    TextView btnCancel;
     @BindView(R.id.ivPeople)
     ImageView ivPeople;
-
     @BindView(R.id.ivCamera)
     ZXingScannerView mScannerView;
 
@@ -714,7 +706,7 @@ public class SendTransactionFragment extends DialogFragment implements UIValidat
     public void beginScanQrCode(){
         //mScannerView = new ZXingScannerView(getContext());
         mScannerView.setFormats(listOf(BarcodeFormat.QR_CODE));
-        mScannerView.setAspectTolerance(20f);
+        mScannerView.setAspectTolerance(0.5f);
         mScannerView.setAutoFocus(true);
         mScannerView.setLaserColor(R.color.colorAccent);
         mScannerView.setMaskColor(R.color.colorAccent);
@@ -784,6 +776,8 @@ public class SendTransactionFragment extends DialogFragment implements UIValidat
         try {
             Invoice invoice = Invoice.fromQrCode(result.getText());
 
+            Log.d(TAG, "QR Code read: " + invoice.toJsonString());
+
             etTo.setText(invoice.getTo());
 
             for (int i = 0; i < assetAdapter.getCount(); i++) {

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

@@ -2,7 +2,6 @@
 <ScrollView
     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="wrap_content"
     android:background="@color/white">
@@ -12,6 +11,13 @@
         android:layout_height="wrap_content"
         android:paddingBottom="24dp">
 
+        <android.support.constraint.Guideline
+            android:id="@+id/centeredVerticalGuideline"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:orientation="vertical"
+            app:layout_constraintGuide_percent="0.5"/>
+
         <View
             android:id="@+id/topView"
             android:layout_width="match_parent"
@@ -36,6 +42,16 @@
             app:layout_constraintStart_toStartOf="parent"
             app:layout_constraintTop_toTopOf="parent" />
 
+        <ImageView
+            android:id="@+id/btnCancel"
+            android:layout_width="24dp"
+            android:layout_height="24dp"
+            android:layout_marginTop="12dp"
+            android:layout_marginEnd="12dp"
+            android:background="@drawable/ic_close"
+            app:layout_constraintTop_toTopOf="parent"
+            app:layout_constraintEnd_toEndOf="parent"/>
+
         <cy.agorise.crystalwallet.util.CircularImageView
             android:id="@+id/gravatar"
             android:layout_width="60dp"
@@ -188,43 +204,43 @@
             app:layout_constraintStart_toStartOf="parent"
             app:layout_constraintTop_toBottomOf="@id/tvMemoError" />
 
+        <android.support.design.widget.FloatingActionButton
+            android:id="@+id/fabCloseCamera"
+            android:layout_width="32dp"
+            android:layout_height="32dp"
+            app:backgroundTint="@color/send_strong_orange"
+            app:fabSize="mini"
+            app:layout_constraintStart_toEndOf="@id/centeredVerticalGuideline"
+            app:layout_constraintTop_toBottomOf="@+id/tvScan"
+            app:srcCompat="@drawable/ic_close" />
+
+        <me.dm7.barcodescanner.zxing.ZXingScannerView
+            android:id="@+id/ivCamera"
+            android:layout_width="0dp"
+            android:layout_height="0dp"
+            android:layout_marginStart="24dp"
+            android:layout_marginTop="16dp"
+            android:contentDescription="@string/camera_feed_to_scan_qr"
+            android:src="#666"
+            app:layout_constraintDimensionRatio="h,3:4"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintEnd_toStartOf="@id/centeredVerticalGuideline"
+            app:layout_constraintTop_toTopOf="@+id/fabCloseCamera" />
+
         <View
             android:id="@+id/viewCamera"
             android:background="@color/black"
-            android:layout_width="180dp"
+            android:layout_width="0dp"
-            android:layout_height="180dp"
+            android:layout_height="0dp"
             android:layout_marginBottom="24dp"
             android:layout_marginStart="24dp"
             android:layout_marginTop="8dp"
             android:visibility="gone"
             android:src="#666"
-            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toTopOf="@id/ivCamera"
-            app:layout_constraintTop_toBottomOf="@id/tvScan">
+            app:layout_constraintStart_toStartOf="@id/ivCamera"
-
+            app:layout_constraintEnd_toEndOf="@id/ivCamera"
-        </View>
+            app:layout_constraintBottom_toBottomOf="@+id/ivCamera"/>
-
-        <me.dm7.barcodescanner.zxing.ZXingScannerView
-            android:id="@+id/ivCamera"
-            android:layout_width="183dp"
-            android:layout_height="176dp"
-            android:layout_marginStart="24dp"
-            android:layout_marginTop="8dp"
-            android:contentDescription="@string/camera_feed_to_scan_qr"
-            android:src="#666"
-            app:layout_constraintStart_toStartOf="parent"
-            app:layout_constraintTop_toBottomOf="@id/tvScan" />
-
-        <android.support.design.widget.FloatingActionButton
-            android:id="@+id/fabCloseCamera"
-            android:layout_width="32dp"
-            android:layout_height="30dp"
-            android:layout_marginStart="165dp"
-            android:layout_marginBottom="165dp"
-            app:backgroundTint="@color/send_strong_orange"
-            app:fabSize="mini"
-            app:layout_constraintBottom_toBottomOf="@+id/ivCamera"
-            app:layout_constraintStart_toStartOf="@+id/ivCamera"
-            app:srcCompat="@drawable/ic_close" />
 
         <View
             android:id="@+id/viewSend"
@@ -245,27 +261,6 @@
             app:layout_constraintEnd_toEndOf="parent"
             app:layout_constraintTop_toTopOf="@+id/viewSend" />
 
-        <LinearLayout
-            android:layout_width="wrap_content"
-            android:layout_height="wrap_content"
-            android:layout_marginBottom="600dp"
-            android:layout_marginEnd="24dp"
-            android:layout_marginTop="20dp"
-            app:layout_constraintBottom_toBottomOf="parent"
-            app:layout_constraintEnd_toEndOf="parent"
-            android:padding="5dp">
-
-            <TextView
-                android:id="@+id/btnCancel"
-                android:layout_width="20dp"
-                android:layout_height="26dp"
-                android:background="@drawable/ic_close"
-                android:text=""
-                android:textSize="18sp"
-                android:textStyle="bold" />
-
-        </LinearLayout>
-
     </android.support.constraint.ConstraintLayout>
 
 </ScrollView>