0anw0
commented
4 years ago Solutions That didn't work with me:- 1- Restarting the device after installing the App. (didn't work). 2- Try another device (I used 3 different devices, different manufacture. but didn't work). 3- Remove ComponentDidMount and mount it manually. (didn't work). 4- Disable the Bluetooth. and Enable It again. (The Function runs and produces a BLE error after disabling the Bluetooth). 5- calling the function multiple times in a short time (ex: 10 sec.). Produces a BLE error. error code:600. (Although that all the app has access to the GPS ).
dariuszseweryn
Prerequisites
Expected Behavior
A scan should be starting.
Current Behavior
What is the current behaviour?
startDeviceScan isn't even run, When I try to put a [console.log() command]. It doesn't recognize when interpreted.
Steps to Reproduce
Please provide detailed steps for reproducing the issue.
Context
startDeviceScan is not responding. The commands that are inside its scope aren't reached. Interesting thing is that when I disable the Bluetooth, the function runs automatically. And Produces a BLE error!
React-Native-cli LOGS:-
{ "name": "TVB2", "version": "0.0.1", "private": true, "scripts": { "android": "react-native run-android", "ios": "react-native run-ios", "start": "react-native start", "test": "jest", "lint": "eslint ." }, "dependencies": { "react": "16.11.0", "react-native": "0.62.2", "react-native-ble-plx": "^2.0.0" }, "devDependencies": { "@babel/core": "7.9.6", "@babel/runtime": "7.9.6", "@react-native-community/eslint-config": "0.0.5", "babel-jest": "24.9.0", "eslint": "6.8.0", "jest": "24.9.0", "metro-react-native-babel-preset": "0.58.0", "react-test-renderer": "16.11.0" }, "jest": { "preset": "react-native" } }
export default class App extends React.Component {
constructor() { super(); this.manager = new BleManager(); this.manager.setLogLevel(LogLevel.Verbose); this.state = { failed: true } }
manualMount() { console.log("Checking Bluetooth") const subscription = this.manager.onStateChange((state) => { if (state === 'PoweredOn') { this.scanAndConnect(); subscription.remove(); } }, true);
}
scanAndConnect() { console.log("Trying to Scan") this.manager.startDeviceScan(null, null , (error ,scannedDevice) => { console.log("In scan") if (error) { console.log(JSON.stringify(error)) return } if (scannedDevice) { console.log("scanned device:", scannedDevice); } this.setState({failed: false}) console.log("Scan Finished") }); }
render() { return (
} }