react-native-ios

问题 I have an interesting bug that is happening to my text. For some reason text is randomly getting cut off like so: const styles = StyleSheet.create({ container: { flex: 1, alignItems: 'center', justifyContent: 'flex-start', backgroundColor: "#ecf0f1", width:"100%", paddingTop:"5%" }, itemContainer: { backgroundColor:"#fff", margin:"5%", marginTop: 0, borderRadius:5, width: "90%" }, itemHeaderContainer: { padding:15, borderColor: "#E4E2E9", borderBottomWidth: 1 }, itemHeaderText: { height:'auto

问题 I have an interesting bug that is happening to my text. For some reason text is randomly getting cut off like so: const styles = StyleSheet.create({ container: { flex: 1, alignItems: 'center', justifyContent: 'flex-start', backgroundColor: "#ecf0f1", width:"100%", paddingTop:"5%" }, itemContainer: { backgroundColor:"#fff", margin:"5%", marginTop: 0, borderRadius:5, width: "90%" }, itemHeaderContainer: { padding:15, borderColor: "#E4E2E9", borderBottomWidth: 1 }, itemHeaderText: { height:'auto

问题 when I tried to build my app on ios-simulator it says : bundling failed: SyntaxError: /Users/MyName/MyApp/node_modules/react-native/node_modules/react-native/Libraries/Components/Switch/Switch.js: Support for the experimental syntax nullishCoalescingOperator isn't currently enabled (167:52): 165 | {...props} 166 | {...platformProps} > 167 | accessibilityRole={props.accessibilityRole ?? 'button'} | ^ 168 | onChange={this._handleChange} 169 | onResponderTerminationRequest={returnsFalse} 170 |

问题 when I tried to build my app on ios-simulator it says : bundling failed: SyntaxError: /Users/MyName/MyApp/node_modules/react-native/node_modules/react-native/Libraries/Components/Switch/Switch.js: Support for the experimental syntax nullishCoalescingOperator isn't currently enabled (167:52): 165 | {...props} 166 | {...platformProps} > 167 | accessibilityRole={props.accessibilityRole ?? 'button'} | ^ 168 | onChange={this._handleChange} 169 | onResponderTerminationRequest={returnsFalse} 170 |

问题 when I tried to build my app on ios-simulator it says : bundling failed: SyntaxError: /Users/MyName/MyApp/node_modules/react-native/node_modules/react-native/Libraries/Components/Switch/Switch.js: Support for the experimental syntax nullishCoalescingOperator isn't currently enabled (167:52): 165 | {...props} 166 | {...platformProps} > 167 | accessibilityRole={props.accessibilityRole ?? 'button'} | ^ 168 | onChange={this._handleChange} 169 | onResponderTerminationRequest={returnsFalse} 170 |

问题 Trying to run react-native run-ios or build RN project from xcode, as soon as metro bundler starts, this error appears in the terminal: Loading dependency graph...jest-haste-map: Watchman crawl failed. Retrying once with node crawler. Usually this happens when watchman isn't running. Create an empty `.watchmanconfig` file in your project's root folder or initialize a git or hg repository in your project. Error: Watchman error: resolve_projpath: path `/Users/vorousjames/Desktop/Development

问题 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. 回答1: 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(); }); 回答2: Try to log a console after all functions

问题 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 ! 回答1: 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. 回答2: realm = new Realm({ schema: [StudentScheme] }) const mydata = realm

问题 I am building a React Native application for iOS. The facebook documentation says width, height, padding, margin etc. takes a number. I wanted to know what the default unit of styling is. <View style={styles.box}> <Text style={styles.text}> Test Component </Text> </View> var styles = ReactNative.StyleSheet.create({ box: { padding: 10, width:100, height:100, }, text: { color: 'black', fontSize: 30, }, }); 回答1: From the docs: All dimensions in React Native are unitless, and represent density

问题 I am trying to save a screenshot to Camera Roll in my react-native app in iOS but as soon as the CameraRoll.saveToCameraRoll is called the app crashes. It was working till iOS 10 and react-native 0.47. And it is working perfectly fine in Android. I already have the permissions required for iOS 10+ in Info.plist. This is my code for saving the image to Camera Roll. CameraRoll.saveToCameraRoll(mUri, 'photo') .then(()=>console.log('saved to CameraRoll')) .catch(()=>console.log('error in saving')