initial commit taken from gitlab.lrz.de

components/NodeInformation.js

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+import React, { Component } from 'react';
+import { Text } from 'react-native';
+import styles from './../style';
+import { YellowBox } from 'react-native';
+YellowBox.ignoreWarnings(['Warning: Each child in an array or iterator should have a unique "key" prop.']); //Silence Warning
+
+export default class NodeInformation extends Component {
+
+    constructor(props) {
+        super(props);
+    };
+
+    render() {
+        var dataATT = this.props.dataATT;
+        var ready = false;
+        // console.log('Child-Component Lat' , dataATT[0]);
+        var hn = 'praxis-dr-tschoep';
+        for (var k in dataATT) {
+            if (dataATT.hasOwnProperty(k)) {
+                if (dataATT[k].nodeinfo.hostname === hn) {
+                    ready = true;
+                }
+            }
+        };
+
+        textAnzeigen = () => {
+            if(ready === false) {
+                return 'Loading..';
+            }
+            else {
+                return 'Ready';
+            }
+        }
+
+        return ([
+            <Text style={{ paddingBottom: 10 }}>{textAnzeigen()}</Text>
+        ]);
+    }
+}

components/SwitchExample.js

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+import React, { Component } from 'react'
+import { View, Text, Switch, StyleSheet } from 'react-native'
+import { PermissionsAndroid } from 'react-native';
+
+
+class SwichExample extends Component {
+    constructor(props) {
+        super(props);
+
+        this.state = {
+            latitude: null,
+            longitude: null,
+            error: null,
+        };
+    }
+    async requestLocationPermission() {
+        const chckLocationPermission = PermissionsAndroid.check(PermissionsAndroid.PERMISSIONS.ACCESS_FINE_LOCATION);
+        if (chckLocationPermission === PermissionsAndroid.RESULTS.GRANTED) {
+            alert("You've access for the location");
+        } else {
+            try {
+                const granted = await PermissionsAndroid.request(PermissionsAndroid.PERMISSIONS.ACCESS_FINE_LOCATION,
+                    {
+                        'title': 'Cool Location App required Location permission',
+                        'message': 'We required Location permission in order to get device location ' +
+                            'Please grant us.'
+                    }
+                )
+                if (granted === PermissionsAndroid.RESULTS.GRANTED) {
+                    alert("You've access for the location");
+                } else {
+                    alert("You don't have access for the location");
+                }
+            } catch (err) {
+                alert(err)
+            }
+        }
+    };
+
+
+
+    componentDidMount() {
+        navigator.geolocation.getCurrentPosition(
+            (position) => {
+              this.setState({
+                latitude: position.coords.latitude,
+                longitude: position.coords.longitude,
+                error: null,
+              });
+            },
+            (error) => this.setState({ error: error.message }),
+            { enableHighAccuracy: false, timeout: 20000, maximumAge: 1000 },
+          );
+    }
+
+    render() {
+
+        return (
+            <View style={{ flexGrow: 1, alignItems: 'center', justifyContent: 'center' }}>
+            <Text
+                onPress={() => this.requestLocationPermission()}>
+                Request Location Permission
+            </Text>
+                <Text>Latitude: {this.state.latitude}</Text>
+                <Text style={{paddingBottom: 10}}>Longitude: {this.state.longitude}</Text>
+                {this.state.error ? <Text>Error: {this.state.error}</Text> : null}
+            </View>
+        )
+    }
+}
+export default SwichExample;

components/fetchData.js

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+import React, { Component } from 'react';
+import { Text} from 'react-native';
+
+export default class FetchData extends Component {
+    
+    constructor(props) {
+        super(props);
+    }
+
+    render() {
+        var data = this.props.data;
+        console.log('Child-Data from JSON: ');
+        return(
+            <Text></Text>
+        );
+    }
+}