import descriptor from qr

src/main/java/com/sparrowwallet/sparrow/control/QRScanDialog.java

@@ -289,7 +289,7 @@ public class QRScanDialog extends Dialog<QRScanDialog.Result> {
 
         private Address getAddress(CryptoAddress cryptoAddress) {
             Address address = null;
-            if(cryptoAddress.getType() == CryptoAddress.Type.P2PKH) {
+            if(cryptoAddress.getType() == null || cryptoAddress.getType() == CryptoAddress.Type.P2PKH) {
                 address = new P2PKHAddress(cryptoAddress.getData());
             } else if(cryptoAddress.getType() == CryptoAddress.Type.P2SH) {
                 address = new P2SHAddress(cryptoAddress.getData());

src/main/java/com/sparrowwallet/sparrow/wallet/SettingsController.java

@@ -13,10 +13,7 @@ import com.sparrowwallet.drongo.wallet.Wallet;
 import com.sparrowwallet.drongo.wallet.WalletModel;
 import com.sparrowwallet.sparrow.AppController;
 import com.sparrowwallet.sparrow.EventManager;
-import com.sparrowwallet.sparrow.control.CopyableLabel;
+import com.sparrowwallet.sparrow.control.*;
-import com.sparrowwallet.sparrow.control.DescriptorArea;
-import com.sparrowwallet.sparrow.control.TextAreaDialog;
-import com.sparrowwallet.sparrow.control.WalletPasswordDialog;
 import com.sparrowwallet.sparrow.event.RequestOpenWalletsEvent;
 import com.sparrowwallet.sparrow.event.SettingsChangedEvent;
 import com.sparrowwallet.sparrow.event.StorageEvent;
@@ -251,6 +248,21 @@ public class SettingsController extends WalletFormController implements Initiali
         }
     }
 
+    public void scanDescriptorQR(ActionEvent event) {
+        QRScanDialog qrScanDialog = new QRScanDialog();
+        Optional<QRScanDialog.Result> optionalResult = qrScanDialog.showAndWait();
+        if(optionalResult.isPresent()) {
+            QRScanDialog.Result result = optionalResult.get();
+            if(result.outputDescriptor != null) {
+                setDescriptorText(result.outputDescriptor.toString());
+            } else if(result.payload != null && !result.payload.isEmpty()) {
+                setDescriptorText(result.payload);
+            } else if(result.exception != null) {
+                AppController.showErrorDialog("Error scanning QR", result.exception.getMessage());
+            }
+        }
+    }
+
     public void editDescriptor(ActionEvent event) {
         OutputDescriptor outputDescriptor = OutputDescriptor.getOutputDescriptor(walletForm.getWallet());
         String outputDescriptorString = outputDescriptor.toString(walletForm.getWallet().isValid());
@@ -260,8 +272,13 @@ public class SettingsController extends WalletFormController implements Initiali
         dialog.getDialogPane().setHeaderText("Wallet output descriptor:");
         Optional<String> text = dialog.showAndWait();
         if(text.isPresent() && !text.get().isEmpty() && !text.get().equals(outputDescriptorString)) {
+            setDescriptorText(text.get());
+        }
+    }
+
+    private void setDescriptorText(String text) {
         try {
-                OutputDescriptor editedOutputDescriptor = OutputDescriptor.getOutputDescriptor(text.get().trim().replace("\\", ""));
+            OutputDescriptor editedOutputDescriptor = OutputDescriptor.getOutputDescriptor(text.trim().replace("\\", ""));
             Wallet editedWallet = editedOutputDescriptor.toWallet();
 
             editedWallet.setName(getWalletForm().getWallet().getName());
@@ -277,7 +294,6 @@ public class SettingsController extends WalletFormController implements Initiali
             AppController.showErrorDialog("Invalid output descriptor", e.getMessage());
         }
     }
-    }
 
     public void showAdvanced(ActionEvent event) {
         AdvancedDialog advancedDialog = new AdvancedDialog(walletForm.getWallet());

src/main/resources/com/sparrowwallet/sparrow/wallet/settings.fxml

@@ -11,6 +11,7 @@
 <?import com.sparrowwallet.drongo.protocol.ScriptType?>
 <?import com.sparrowwallet.sparrow.control.DescriptorArea?>
 <?import org.fxmisc.flowless.VirtualizedScrollPane?>
+<?import org.controlsfx.glyphfont.Glyph?>
 
 <BorderPane stylesheets="@settings.css, @wallet.css, @../script.css, @../descriptor.css, @../general.css" styleClass="wallet-pane" xmlns="http://javafx.com/javafx/10.0.2-internal" xmlns:fx="http://javafx.com/fxml/1" fx:controller="com.sparrowwallet.sparrow.wallet.SettingsController">
     <center>
@@ -79,6 +80,14 @@
                                 <DescriptorArea fx:id="descriptor" editable="false" styleClass="uneditable-codearea" prefHeight="27" maxHeight="27" />
                             </content>
                         </VirtualizedScrollPane>
+                        <Button onAction="#scanDescriptorQR">
+                            <graphic>
+                                <Glyph fontFamily="Font Awesome 5 Free Solid" fontSize="12" icon="CAMERA" />
+                            </graphic>
+                            <tooltip>
+                                <Tooltip text="Scan a QR code" />
+                            </tooltip>
+                        </Button>
                         <Button text="Edit..." onAction="#editDescriptor" />
                     </Field>
                 </Fieldset>