react-native

问题 I've installed react-native-image-picker successfully, for a fresh react native app, linked it and given right permissions via the info.plist file to access camera, photos etc... I'm using the code from the ReadMe on react-native-image-picker page, but i receive an error When attempting to openGallery() i get the following warning and no image library opens: Possible unhandled Promise Rejection TypeError; undefined is not a function (near...reactNativeImagePicker.default.launchImageLibrary...

问题 I am using https://www.npmjs.com/package/react-native-chart-kit and am trying to make a chart to match the following design spec: I can get most of the options to work with the code attached at the end of this question, however I can't seem to figure out how to remove the opacity of each individual bar, so it ends up looking like this: I've been poring through the source code and playing with props and styles to no avail.. any help would be greatly appreciated! const { width: screenWidth } =

问题 I am currently in the process of trying to build my first app using Expo-cli. I am on Windows 10. I have an Apple Developer account and am just trying to build for iOS at the moment. However, whenever I run "expo build:ios" I get the following errors: Connection reset by peer - SSL_connect >>Error while gathering & validating credentials >>Error: Reason:Unknown reason, raw:"Could not receive latest API key from App Store Connect, this might be a server issue." >>Reason:Unknown reason, raw:

问题 I am currently in the process of trying to build my first app using Expo-cli. I am on Windows 10. I have an Apple Developer account and am just trying to build for iOS at the moment. However, whenever I run "expo build:ios" I get the following errors: Connection reset by peer - SSL_connect >>Error while gathering & validating credentials >>Error: Reason:Unknown reason, raw:"Could not receive latest API key from App Store Connect, this might be a server issue." >>Reason:Unknown reason, raw:

问题 I am not sure how to add a delete function in a FlatList. I know I can make different components, but I want to know how to do it within this one file. I've trying to figure this out for hours, but do not know how to do. export default function test() { const [enteredGoal, setEnteredGoal] = useState(""); const [courseGoals, setCourseGoals] = useState([]); const goalInput = enteredText => { setEnteredGoal(enteredText); }; const addGoal = () => { setCourseGoals(currentGoals => [ ...currentGoals

问题 I am not sure how to add a delete function in a FlatList. I know I can make different components, but I want to know how to do it within this one file. I've trying to figure this out for hours, but do not know how to do. export default function test() { const [enteredGoal, setEnteredGoal] = useState(""); const [courseGoals, setCourseGoals] = useState([]); const goalInput = enteredText => { setEnteredGoal(enteredText); }; const addGoal = () => { setCourseGoals(currentGoals => [ ...currentGoals

问题 I'm getting an error at dataSource: responseJson.event_array , when I remove this line everything works fine however, when I compare it to other peoples code it's the same. It does reach the server, because I do not get the alert message. componentDidMount() { fetch('valid url') .then((response) => response.json()) .then((responseJson) => { this.setState({ dataSource: responseJson.event_array, isLoading: false }); }) .catch((error) => { alert('Could not reach the server!') }); } What am I

问题 I'm getting an error at dataSource: responseJson.event_array , when I remove this line everything works fine however, when I compare it to other peoples code it's the same. It does reach the server, because I do not get the alert message. componentDidMount() { fetch('valid url') .then((response) => response.json()) .then((responseJson) => { this.setState({ dataSource: responseJson.event_array, isLoading: false }); }) .catch((error) => { alert('Could not reach the server!') }); } What am I

问题 I'm getting an error at dataSource: responseJson.event_array , when I remove this line everything works fine however, when I compare it to other peoples code it's the same. It does reach the server, because I do not get the alert message. componentDidMount() { fetch('valid url') .then((response) => response.json()) .then((responseJson) => { this.setState({ dataSource: responseJson.event_array, isLoading: false }); }) .catch((error) => { alert('Could not reach the server!') }); } What am I

问题 In my Formik form, when I click on the search button, a list of items is rendered (UsersFoundList). This list is outside the form and each item in the list has a button of its own. When I click on any of those buttons from the list for the first time, they don't work. Instead, the handleBlur of my form is triggered and since the input field is empty, an error messages starts showing under the input field. So, the button doesn't do what it's supposed to do in the first attempt. I tested the