react-native-ios

How to call Two functions in a event on React-Native?

ぃ、小莉子 提交于 2019-12-07 11:17:28
I would try : Source ( Two function in a event on React-Native ) onValueChange={(selected) => { this.setState({selected}); this.state.eventOnChange(); }} But that's Not work That executes the first function , but not the second. Component.setState() is asynchronous and may be locked on the second call while it is still doing the first. Do the second call in a callback like this: this.setState({selected},() => { this.state.eventOnChange(); }); Try to log a console after all functions onValueChange={(selected) => { this.setState({selected}); this.state.eventOnChange(); console.log('it works!');

How to open Other app from ReactNative?

独自空忆成欢 提交于 2019-12-07 07:51:30
问题 How to open other apps (Gmail, Camera) from ReactNative. How can I pass data from current scene to other app? 回答1: I found this npm library react-native-app-link which can open other apps. This is based on deep linking, if you have any deep links then this library can help. This doesn't open apps just by giving the android package name or ios app id. https://github.com/FiberJW/react-native-app-link 回答2: you can mange opening other apps using Linking 回答3: Code sample for opening the dialer

How do I request multiple permissions at once in react native

无人久伴 提交于 2019-12-07 05:19:45
问题 I'd like to request permissions on one page instead of waiting for each particular situation. However, I do not want multiple popups. Is there a way to ask for permissions with a single popup/modal. On the android side I found this post and this, which look promising, but I have yet to find something for iOS. 回答1: In Android First add permissions in to the AndroidManifest.xml file and then if (Platform.OS === 'android') { PermissionsAndroid.requestMultiple( [PermissionsAndroid.PERMISSIONS

Adding multiple events to onPress function in React Native

拜拜、爱过 提交于 2019-12-07 01:35:29
问题 When I press the button, it supposed to navigate to another page and it also increase the view count. But I can't figure out anyway to implement them at the same time. This is my code: <Button onPress={Actions.ideaOnClick}> <Button onPress={() => this.setState({views: ++this.state.views})}> 回答1: yourFunction(){ Actions.ideaOnClick(); this.setState({views: ++this.state.views}); } <Button onPress={this.yourFunction.bind(this)}}> 回答2: Just create a function that does both things. No other way

protocol extension doesn't work with RCT_EXPORT_VIEW_PROPERTY?

旧城冷巷雨未停 提交于 2019-12-06 19:13:26
I have a partial base class RNChartBaseView (protocol and extension), and bunch of subclass like RNLineChartView, RNBarChartView etc. RNChartBaseView.swift protocol RNChartBaseView { associatedtype T: ChartViewBase; associatedtype U: ChartDataEntryBase; var chart: T { get } func createEntries(_ data: NSDictionary) -> [U]; func setData(_ data: NSDictionary); } extension RNChartBaseView { func setData(_ data: NSDictionary) { let chartData = createEntries(data); chart.data = chartData; } } RNLineChartView.swift class RNLineChartView : UIView, RNChartBaseView{ let _chart:LineChartView; var chart:

Full Text Search in React-native

一笑奈何 提交于 2019-12-06 15:20:50
React native noob here , I wanna know if it's possible to use the FullTextSearch feature of sqlite in react, if so , tell me where i can learn more about it . Thanks ! Use Realm Database for React Native , Realm is an object-oriented database. OO model makes it 10x faster than SQLite and saves you from running tons of query which is a common thing for a typical SQL database and fuse.js may help you to search text. realm = new Realm({ schema: [StudentScheme] }) const mydata = realm.objects('Product_Info'); let filteredData = []; let keywords = search.split(" "); keywords.forEach((obj, index) =>

Trying to build to tablet, wanted dev team profile, added one, but now failing for same for “tests”

无人久伴 提交于 2019-12-06 13:32:26
问题 I am on iOS, creating a react-native iOS app. I was using the simulator but the resolution doesn't look right, its got this black padding etc. So I was trying to test on a device. I plugged my device in then clicked "Run". It failed under "navi" for reason "Dependency Analysis Error - Signing for "navi" requires a development team. Select a development team in the project editor. Code signing is required for product type 'Application' in SDK 'iOS 10.3'" - screenshot: http://i.imgur.com

How To Add More component dynamically React Native

早过忘川 提交于 2019-12-06 09:47:45
问题 I want to add more components after clicking on the button. Can you share code or an idea so that I can implement? As the image shows, every time when user click on the add button, one row / component will be added. 回答1: It's where state shining of, for example: constructor(props) { super(props); this._handleAddButton = this._handleAddButton.bind(this); this.state = { /* initial your state. without any added component */ data: [] } } _handleAddButton() { let newly_added_data = { title: 'new

How to call API when App is killed in react native?

自作多情 提交于 2019-12-06 07:37:52
问题 I Want to call API in the background when App killed and set the data in AsyncStorage. I used the following library but not working for me. react-native-background-task react-native-background-fetch I want to called the API without time scheduling. The above both use the time Scheduling. Please help me. 回答1: You would need to implement the componentWillUnmount method on the root of your app or use a library like realm to save the state throughout the use of your app. Maybe worth checking out

App crashes on start when remote debugging is disabled

ぐ巨炮叔叔 提交于 2019-12-06 07:26:22
I am trying to install my react-native app on my phone (iPhone). It installs alright but then crashes on start with this error message - undefined is not an object (evaluating 'navigator.userAgent.indexOf') <unknown> :12:71 loadModuleImplementation require.js:213:12 <unknown> getScrollPosition.js:12:31 If i then enable remote js debugging, it reloads and everything works fine. I disable remote debugging, the app goes back to crashing. Any idea what might be happening here? Update - The culprit code is in fbjs package - https://github.com/facebook/fbjs/blob/master/packages/fbjs/src/core/dom