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Mastering Development

_this2.renderPrediction is not a function

I’m new in React Native and I don’t understand what is my error and where to locate it. basically I’m trying to analyse and image to predict what it is. I’m using tensorflow and the tutorial I found at this web page https://heartbeat.fritz.ai/image-classification-on-react-native-with-tensorflow-js-and-mobilenet-48a39185717c. can someone help me here is my code : import React from […]

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Development

Is there a way to change stlyes position:’relative’ to position:’absolute’ depending on Y scroll value in a Animated.ScrollView React-Native

I have an animated header that gets smaller and opacity increments when the scroll view is being scrolled down.. Under that there is a filter bar that needs to stick just below the animated header after it has fully clamped. I got it to do just that with position:”absolute” and making that view follow the […]

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Development

Videos in long Flatlist crashes the app and having very very poor performance

Topic: Video Flatlist in React Native. (Normal Videos / YouTube Videos) Any one will be displayed according to the array data simultaneously. So it will be a long flatlist containing two types of video. Sometimes many onPress event doesn’t work due to performance issue Major Issues: App crashes when scrolling bottom to top Performance is […]

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Development React

How to place floating action button in bottom right in React Native

I am trying to place a floating action button in the lower right corner of my app but it is placing it in the top left way off screen. returned view: <View> <View style=> <TouchableOpacity onPress={this.onPress} activeOpacity={.5} > <Image source={require(‘./assets/images/hamburger.png’)} style= /> </TouchableOpacity> </View> <FloatingAction style={styles.bottom}/> </View> styles: const styles = StyleSheet.create({ bottom: { flex: […]

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Development React

Change label Color TextInput react native paper onFocus

how to change the label color for textInput when it is focused. I am using react-native-paper by default it is violet in color is there any prop like labelColor to do the same The label color of TextInput needs to be changed when the textInput is clicked to edit. PLease see the following code for […]

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Development Java Javascript React

React – styling in component with javascript file

I’m trying to adapt this Codepen loading animation, which has the triad [markup, style and logic] and use it as an exportable react component. For that I try to import css from css file, export javascript functions form js file, and render html in a <div> within Loading.jsx. This is the code I have so […]

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Development

Camera Preview in Expo is Distorted

I’m using Camera that comes from expo package and I’m having trouble with camera preview distortion. The preview makes images appear wider in landscape view and thinner in portrait view. Most of the solutions I have found are not using expo-camera. Relevant Code: camera.page.js: import React from ‘react’; import { View, Text } from ‘react-native’; […]

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Development

Owl datepicker is skewing sidebar menu

Using Angular 8 and Owl datepicker 7.00, when opening the datepicker without scrolling down the page, it works as expected. However, if you scroll down the page first and then open the datepicker, the sidebar menu and app header get pushed upwards. No custom css is used, all out of the box. Any suggestions would […]

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Development

Image overrides backgroundColor of elements after upgrade to react-native 0.61.0

I have very strange problem after upgrade react-native library in my app from version 0.59.9 to 0.61.0. The problem occurred only on Android (simulators and device). Firstly, I should mention that the problem has not occurred since the first turn on the application. The most often appear after logging to app. After processing the data, […]

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Development

How to place div element in the same place and also retrieve .data() values even when i reload the page

I’m trying to append div’s tag inside a div, also div’s are re-sizable and draggable. They also stores some vales using .data(). Demo is shown below i need to place the div’s inside that parent div in same place and get the values i stored for each div’s even i reload the page code used […]