react-native-pixel-color
v0.0.5
Published
Returns the pixel color from a graphic at a given corrdinate.
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React Native Pixel Color
Returns the pixel color from a graphic at a given coordinate.
Setup
Install the package:
React-Native 0.29.2+
npm install --save react-native-pixel-color
react-native link react-native-pixel-color
React-Native < 0.29.2
npm install rnpm -g
rnpm install react-native-pixel-color
Android
Note: on latest versions of React Native, you may have an error during the Gradle build on Android (com.android.dex.DexException: Multiple dex files define Landroid/support/v7/appcompat/R$anim
). Run cd android && ./gradlew clean
to fix this.
Usage example
import PixelColor from 'react-native-pixel-color';
PixelColor.getHex(imageUriOrData, { x, y }).then((color) => {
// #000000
}).catch((err) => {
// Oops, something went wrong. Check that the filename is correct and
// inspect err to get more details.
});
Sample app
Examples are found in the the examples
folder.
API
promise getHex(path, options)
The promise resolves with a string containing the uri of the new file.
Option | Description
------ | -----------
path | Path of image file, or a base64 encoded image string prefixed with 'data:image/imagetype' where imagetype
is jpeg or png.
options | { x: int, y: int }