Comments (5)
@alexzkazu Yes, if you're switching what you're publishing or the component is remounting before a new publish you need to call "unpublish()" to make sure all existing publications are removed. "Make sure to unpublish, disconnect and remove any listeners as they won't be removed automatically!" - from the docs.
Just a piece of advice too - from what I can gather there this is kind of a complex way to achieve what you're trying to do. I would isolate the text input just so it's strictly a component and doesn't handle any logic and have a useEffect hook waiting for a new message or just pass down your publish logic function through props into the component. Then it's a lot easier to debug and see the flow as well. Seems to be a problem with how you're implementing it.
from react-native-google-nearby-messages.
Interesting, I haven't experienced this dropping in my production apps. Do you experience the issue with the app open on both devices and the message suddenly dropping? Is there some kind of rerender or maybe it has to do with how you've implemented the logic? Are you using hooks?
from react-native-google-nearby-messages.
Hey @LeviWilliams , yeah this happens when the app is open on both devices.
I modified the example app to give this a try.. I'm still new with hooks so I might've made a mistake somewhere:
let meObj = {};
const TextInput = () => {
const onSubmitEditing = async (text) => {
meObj.text = text;
await publish(JSON.stringify(meObj));
};
const [value, onChangeText] = React.useState('Useless Placeholder');
return (
<TextInput
style={{ height: 40, borderColor: 'gray', borderWidth: 1 , color: 'black'}}
onChangeText={text => onChangeText(text)}
onSubmitEditing = {(event) => (onSubmitEditing(event.nativeEvent.text))}
value={value}
/>
);
};
export default function App() {
const [nearbyMessage, setNearbyMessage] = useState('');
const [textMessage, setTextMessage] = useState('');
useNearbyErrorCallback(
useCallback((kind, message) => {
Alert.alert(kind, message);
}, []),
);
const _connect = useCallback(async () => {
console.log('Connecting...');
await connect({
apiKey: API_KEY,
discoveryModes: ['broadcast', 'scan'],
discoveryMediums: ['ble'],
});
console.log('Connected!');
return () => disconnect();
}, []);
const _publish = useCallback(async () => {
const deviceName = await getDeviceName();
meObj.deviceName = deviceName;
console.log(`Publishing "${deviceName}"...`);
await publish(JSON.stringify(meObj));
console.log(`Published "${deviceName}"!`);
}, []);
const _subscribe = useCallback(async () => {
console.log('Subscribing...');
await subscribe(
(m) => {
m = JSON.parse(m);
setNearbyMessage(m.deviceName);
setTextMessage(m.text);
console.log(`Found: ${JSON.stringify(m)}`);
},
(m) => {
setNearbyMessage('');
setTextMessage('');
console.log(`Lost: ${JSON.stringify(m)}`);
},
);
console.log('Subscribed!');
}, []);
const _checkPermissions = useCallback(async () => {
const permission = await checkBluetoothPermission();
const available = await checkBluetoothAvailability();
Alert.alert(
'Bluetooth Permissions:',
`Granted: ${permission}, Available: ${available}`,
);
}, []);
useEffect(() => {
const start = async () => {
try {
await _checkPermissions();
await _connect();
await _subscribe();
await _publish();
} catch (e) {
Alert.alert(
'Unknown error occured while connecting!',
JSON.stringify(e.message ?? e),
);
}
};
start();
return () => disconnect();
}, [_connect, _subscribe, _publish, _checkPermissions]);
return (
<View style={styles.container}>
<Text style={styles.welcome}>☆GoogleNearbyMessages example☆</Text>
{TextInput()}
<Text style={styles.welcome}>Nearby Message:</Text>
<Text style={styles.instructions}>{nearbyMessage}</Text>
<Text style={styles.welcome}>Text Message:</Text>
<Text style={styles.instructions}>{textMessage}</Text>
</View>
);
}
from react-native-google-nearby-messages.
Well, I put the TextInput component directly in the return statement, changed onSubmitEditing
to onEndEditing
, and that seems to have fixed it so I'll be closing this. Thanks!
from react-native-google-nearby-messages.
Actually, upon doing this several times, the issue occurred again. I reverted back to the original example, published a simple string with a button component, and I ran into the same issue.. Do we have to do anything before publishing a message again?
from react-native-google-nearby-messages.
Related Issues (20)
- `new NativeEventEmitter()` was called with a non-null argument without the required `removeListeners` method.
- [BUG] Compile error in Swift code HOT 7
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- [QUESTION] HOT 2
- plugin with id 'maven' not found HOT 1
- [BUG] IllegalArgumentException on Android [ConnectionResult=APP_NOT_OPTED_IN] HOT 1
- 2 duplicate symbols architecture arm64 (unless I use a pod post-install script) HOT 3
- StackOverflow onFound - android HOT 1
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- Can I list all nearby devices that use my app? [QUESTION] HOT 2
- Need to work this Google Nearby Feature Without Internet and wifi HOT 8
- [BUG] Not working in background job (https://www.npmjs.com/package/react-native-background-job) HOT 6
- what this library do HOT 3
- [FEATURE] onBLESignalChanged and onDisctanceChanged HOT 12
- Communication between iOS and Android devices is broken HOT 1
- [QUESTION] Why unpublish() is not declared as async in index.ts ? HOT 3
- Unknown Error occured while connecting
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from react-native-google-nearby-messages.