react-native-android

问题 I created a React-Native application Then I created a React-Native Library using this seed github.com/frostney/react-native-create-library Now, I need to use this package https://github.com/toystars/react-native-geo-fence Inside of the Library. Problem is: The library is not a react-native application, and the geo-fence lib needs linking. I cant change the React-Native App and can not use the geo-fence directly inside of it, of course. The logic will need to stay inside the Library i created.

问题 I'm new in react native, i have two Scene OnceScene and TwoScene I want to Navigate from OnceScene to TwoScene and at the same time i want to pass some string or array from 1st the 2nd so for that i have written the below code let nextRoute = { component: TwoScene, title: 'TwoScene', passProps: { myProp: 'bar', searchText: 'pass data', } }; this.props.navigator.push(nextRoute); you can see i am passing the string in passProps but how can i acess that string in TwoScene Its seems simple but

问题 So yeah the title has the question. A little information this is what my Firebase database looks like: And this is the current code: export function updateQTY(barcode) { database.ref('items/' + barcode).update({ qty: currentQTY(barcode) }) } export function currentQTY(barcode) { database.ref('items/' + barcode).once('value').then(function(snapshot) { var qty = snapshot.val().qty console.log(qty) }) return qty + 1 } Basically, What I want is for the qty + 1 to be returned to the function

问题 For enabling location in Phone i used react-native-system-setting . But while using that i got unexpected token error . can some one clarify me , how to use this in react native codes . // this is my error Unexpected token (12:15) 10 | }; 11 | > 12 | SystemSetting.isLocationEnabled().then((enable)=>{ | ^ 13 | const state = enable ? 'On' : 'Off'; 14 | console.log('Current location is ' + state); 15 | }) // this is my CODE import React, { Component } from "react"; import SystemSetting from

问题 I'm new to React Native for Android development, please find the below further details to resolve my issue OS: Windows 7 JDK & JRE: Version 8 Node: v7.0.0 NPM: 3.10.6 Whenever I try to run the command - 'react-native run-android' inside of my project root foleder gettting the following error, but meanwhile React Packager is opeing with - React Packager Ready. Not sure what whould be an issue, $ react-native run-android (node:6096) DeprecationWarning: os.tmpDir() is deprecated. Use os.tmpdir()

问题 I am building a signup form and I want to add icons but the icon should look different on different platform for example If I use Ionicons it should show ios-person on ios device and md-person on android devices. How can I build a custom component like that so I just import it in my Signup screen form and add a icon based on text input like an person for name. 回答1: You could determine the icon based on the platform, like so: import { Platform } from 'react-native'; <Ionicons name={Platform

问题 The iOS version of my app works fine. However, when I attempt to run the android version in debug mode, I immediately get this error: If I dismiss the error, I am able to continue. However, when I build the apk with assembleRelease, the apk is built, but it immediately crashes on load. I've double checked to make sure that fontWeight isn't being set twice in any of the components. I've also cleared the cache. Is there a way to check where exactly this error is occurring? I've also seen this

问题 I have not too much experience with android services, the broadcastReceiver have some warning also WifiReceiver.java uses or overrides a deprecated API. I search for this but couldn't find any solution, I don't know which one method is deprecated, I m not in touch too much with java and android Here is error cannot find symbol registerReceiver(wifiReceiver,filter); ^ symbol: variable registerReceiver My react Method is @ReactMethod public void NetInfo(){ IntentFilter filter = new IntentFilter

问题 I will take StackNavigation for Push and Pop with its parameter. Its Working fine. But Now I want to implement after some screen TabBar after StackNavigation, Have any Idea How to Take TabBar after StackNavigation. Note : I want to implement Custom TabBar. Please help me. 回答1: You can do something like let StackWithTabs1 = StackNavigator({ // stackNavigator inside the tabNavigator Screen3:{ screen: Screen3 } ,Screen4:{ screen: Screen4 } }); let StackWithTabs2 = StackNavigator({ //

问题 I'm trying to create a FlatList that contains an array with objects that has an array from a server and I can't get it to work. my error message: TypeError: Cannot read proparty 'Data' of undefined I can get it to work with my normal list that's not fetched from a Server. Heres the structure from my working list [{"DATA":[{"filter_id":"44","filter_name":"filter 1"}, {"filter_id":"45","filter_name":"filter 2"},{"filter_id":"46","filter_name":"filter 3"},{"filter_id":"47","filter_name":"filter