I've created a new react-native project using react-native init command and then I tried to use Animated component to create a simple animation. The problem is that Animated is undefined when trying to call Animated.ValueXY() even if Animated component is added to React:
var {
Animated,
AppRegistry,
StyleSheet,
Text,
View
} = React;
Does anyone experienced the same problem?
You, also, need to include Image in your React vars.
This is required for the vectors to work in animated.
Related
I want to animate a background image like given in the video in flutter https://youtu.be/vWgT_qla4gw. please help me
there are many ways to animate the background but the popular one is to use animated_background library from pub.dev
here's the link to it
you can install this library to your flutter app and still can't figure out how to use it.....you can comeback here anytime.....cheers for your project
I'm using Camera Plus with Nativescript Vue. The camera preview is very zoomed in, but when I take a photo it comes out normal. This only happens on Android.
Anyone out there who have experience with this plugin and knows what the issue might be? Is there a way to control the zoom?
I have also noticed if I set the height of the preview to around 300, it's not zoomed in, but the higher the height, the more zoomed in it gets.
My implementation:
app.js
import Camera from './components/Camera';
const CameraPlus = require("#nstudio/nativescript-camera-plus");
Vue.registerElement('CameraPlus', () => CameraPlus.CameraPlus);
const app = new Vue({
template: `
<Frame>
<Camera />
</Frame>`,
components: {
Camera,
},
});
app.$start();
camera.vue
<template lang="html">
<Page>
<CameraPlus></CameraPlus>
</Page>
</template>
Tested on Android 9 and 10 with Camera Plus v3.0.7
Indeed, I registered this issue here.
This is actualy due to the Android's native implementation used by nativescript-camera-plus. It's named FancyCamera and developed in Kotlin language. Since new release 3.1.0 of CameraPlus uses new FancyCamera version as well, which has a new implementation using new Android camerax library (for android api 21+). With theat, the new plugin has the zoom issue is fixed.
However, at the moment I'm writing, the new implementation has bugs, which I'm tryingto fix, as explained here. Help is welcome.
How to access camera in nativescript without opening camera activity?
I used following code but it is opening device camera application. And I am expecting it should take picture without opening camera, or add camera view in application itself like whatsapp web scan.
import cameraModule = require("camera");
import imageModule = require("ui/image");
cameraModule.takePicture().then(picture => {
console.log("Result is an image source instance");
var image = new imageModule.Image();
image.imageSource = picture;
});
The "camera" module of NativeScript is an abstraction for the OS specific camera module which is why it opens that native interface.
In order to open a custom "nested" camera view a custom implementation would be required. Here comes the power of NativeScript and more specifically its plugin extensibility. You can either write such plugin yourself or looks for an existing one. As the idea of "nested" camera UI is very specific and would probably rely on app specific styles I was not able to find such existing plugin. Here for example you can see how something like this would be implemented in native Android, the same is probably possible in iOS also.
I would like to know how the views returned from the render() method of an React-Native app transformed into native ones.
I have read some of the most important code in React-Native project, like XReactInstanceManagerImpl, CatalystInstanceImpl, and UIManagerModule etc. However, I cannot find any code which is used to transform the virtual DOM into the native view hierarchy.
Can someone give me some clue for this?
I have a own android renderer of Image for rounded image on Xamarin.forms.
But it's opacity property is not working.
When I set it's value, image disappears.
(iOS & Android under Lollipop, works fine)
My renderer is quite similar with this
https://github.com/jamesmontemagno/Xamarin.Plugins/tree/master/ImageCircle
This package is also not working when I set opacity.
It's really hard to make well working circular image.
Could you help me?
Thanks.