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feat(mobile): implement NFC tag writing support to share DevCards #348

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feat(mobile): implement NFC tag writing support to share DevCards #348

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27 changes: 27 additions & 0 deletions apps/mobile/android/app/src/main/AndroidManifest.xml
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Original file line number Diff line number Diff line change
@@ -0,0 +1,27 @@
<manifest xmlns:android="http://schemas.android.com/apk/res/android">
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.NFC" />
<uses-feature android:name="android.hardware.nfc" android:required="false" />
Comment on lines +1 to +4

<application
android:name=".MainApplication"
android:label="@string/app_name"
android:icon="@mipmap/ic_launcher"
android:roundIcon="@mipmap/ic_launcher_round"
android:allowBackup="false"
android:theme="@style/AppTheme"
android:supportsRtl="true">
<activity
android:name=".MainActivity"
android:label="@string/app_name"
android:configChanges="keyboard|keyboardHidden|orientation|screenLayout|screenSize|smallestScreenSize|uiMode"
android:launchMode="singleTask"
android:windowSoftInputMode="adjustResize"
android:exported="true">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
2 changes: 2 additions & 0 deletions apps/mobile/ios/DevCard/Info.plist
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Expand Up @@ -36,6 +36,8 @@
</dict>
<key>NSLocationWhenInUseUsageDescription</key>
<string></string>
<key>NFCReaderUsageDescription</key>
<string>DevCard needs NFC to write your profile link to your physical card.</string>
<key>UILaunchStoryboardName</key>
<string>LaunchScreen</string>
<key>UIRequiredDeviceCapabilities</key>
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1 change: 1 addition & 0 deletions apps/mobile/package.json
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Expand Up @@ -25,6 +25,7 @@
"react-dom": "^19.1.0",
"react-native": "0.81.5",
"react-native-gesture-handler": "^2.28.0",
"react-native-nfc-manager": "^3.14.12",
"react-native-qrcode-svg": "^6.3.0",
"react-native-reanimated": "^4.1.7",
"react-native-safe-area-context": "^5.6.2",
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65 changes: 63 additions & 2 deletions apps/mobile/src/screens/SettingsScreen.tsx
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Expand Up @@ -15,8 +15,7 @@ import { useNavigation } from '@react-navigation/native';
import { COLORS, SPACING, FONT_SIZE, BORDER_RADIUS } from '../theme/tokens';
import { useAuth } from '../context/AuthContext';
import { API_BASE_URL } from '../config';

import { useNavigation } from '@react-navigation/native';
import NfcManager, { Ndef, NfcTech } from 'react-native-nfc-manager';

export default function SettingsScreen() {
const navigation = useNavigation<any>();
Expand All @@ -27,6 +26,51 @@ export default function SettingsScreen() {
const [role, setRole] = useState(user?.role || '');
const [company, setCompany] = useState(user?.company || '');
const [saving, setSaving] = useState(false);
const [writingNfc, setWritingNfc] = useState(false);

const writeNfcTag = async () => {
try {
const supported = await NfcManager.isSupported();
if (!supported) {
Alert.alert('Error', 'NFC is not supported on this device');
return;
}

setWritingNfc(true);
await NfcManager.start();

const res = await fetch(`${API_BASE_URL}/api/nfc/payload`, {
headers: { Authorization: `Bearer ${token}` },
});

if (!res.ok) {
throw new Error('Failed to fetch NFC payload');
}

const data = await res.json();
if (!data.payload) {
throw new Error('Invalid payload received');
}

Alert.alert('NFC', 'Hold your phone near an NFC tag');
await NfcManager.requestTechnology(NfcTech.Ndef);

const bytes = Ndef.encodeMessage([
Ndef.uriRecord(data.payload),
]);

if (bytes) {
await NfcManager.ndefHandler.writeNdefMessage(bytes);
Alert.alert('Success', 'Successfully wrote DevCard to NFC tag!');
}
Comment on lines +58 to +65
} catch (ex: any) {
console.warn(ex);
Alert.alert('Error', ex.message || 'Failed to write NFC tag. Please try again.');
} finally {
NfcManager.cancelTechnologyRequest();
setWritingNfc(false);
}
Comment on lines +70 to +72
};

const handleSave = async () => {
setSaving(true);
Expand Down Expand Up @@ -118,6 +162,23 @@ export default function SettingsScreen() {
</TouchableOpacity>
</View>

{/* Physical Cards */}
<View style={styles.sectionContainer}>
<Text style={styles.sectionSubtitle}>Physical Cards</Text>
<TouchableOpacity
style={styles.settingRow}
onPress={writeNfcTag}
disabled={writingNfc}>
<View style={styles.settingRowLeft}>
<Text style={styles.settingRowIcon}>💳</Text>
<Text style={styles.settingRowText}>
{writingNfc ? 'Writing to NFC...' : 'Write to NFC Card'}
</Text>
</View>
<Text style={styles.settingRowArrow}>→</Text>
</TouchableOpacity>
Comment on lines +168 to +179
</View>

<TouchableOpacity style={styles.logoutButton} onPress={handleLogout}>
<Text style={styles.logoutButtonText}>Log Out</Text>
</TouchableOpacity>
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