refresh qr code when notes changed (#410)

app/build.gradle

@@ -7,8 +7,8 @@ android {
         applicationId "com.m2049r.xmrwallet"
         minSdkVersion 21
         targetSdkVersion 27
-        versionCode 122
+        versionCode 123
-        versionName "1.7.2 'OpenAlias'"
+        versionName "1.7.3 'OpenAlias'"
         testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
         externalNativeBuild {
             cmake {

app/src/main/java/com/m2049r/xmrwallet/ReceiveFragment.java

@@ -25,7 +25,9 @@ import android.os.AsyncTask;
 import android.os.Bundle;
 import android.support.design.widget.TextInputLayout;
 import android.support.v4.app.Fragment;
+import android.text.Editable;
 import android.text.InputType;
+import android.text.TextWatcher;
 import android.view.KeyEvent;
 import android.view.LayoutInflater;
 import android.view.View;
@@ -142,6 +144,22 @@ public class ReceiveFragment extends Fragment {
                 return false;
             }
         });
+        notesEdit.addTextChangedListener(new TextWatcher() {
+            @Override
+            public void beforeTextChanged(CharSequence s, int start, int count, int after) {
+
+            }
+
+            @Override
+            public void onTextChanged(CharSequence s, int start, int before, int count) {
+                clearQR();
+            }
+
+            @Override
+            public void afterTextChanged(Editable s) {
+
+            }
+        });
 
         bSubaddress.setOnClickListener(new View.OnClickListener() {
             @Override
@@ -163,6 +181,8 @@ public class ReceiveFragment extends Fragment {
         qrCode.setOnClickListener(new View.OnClickListener() {
             @Override
             public void onClick(View v) {
+                Helper.hideKeyboard(getActivity());
+                etDummy.requestFocus();
                 if (qrValid) {
                     qrCodeFull.setImageBitmap(((BitmapDrawable) qrCode.getDrawable()).getBitmap());
                     qrCodeFull.setVisibility(View.VISIBLE);