I'm using the Camera component from expo and MediaLibrary to save the picture taken. My question is, how can I compress that image when saving it with MediaLibrary in the Galery? Im trying to compress it because later I will also be uploading that image to Firebase Storage. So far this is the code that I have right now working without compressing it:
import React, { useState, useEffect} from 'react';
import { Text, View, TouchableOpacity } from 'react-native';
import { Camera } from 'expo-camera';
import * as MediaLibrary from 'expo-media-library';
import { Dimensions } from 'react-native';
const {height, width} = Dimensions.get('window');
export default function App() {
const [hasPermission, setHasPermission] = useState(null);
const [cameraRef, setCameraRef] = useState(null)
const [type, setType] = useState(Camera.Constants.Type.back);
useEffect(() => {
(async () => {
const { status } = await Camera.requestPermissionsAsync();
MediaLibrary.requestPermissionsAsync();
setHasPermission(status === 'granted');
})();
}, []);
if (hasPermission === null) {
return <View />;
}
if (hasPermission === false) {
return <Text>No access to camera</Text>;
}
return (
<View style={{ flex: 1 }}>
<Camera style={{ flex: 1 }} type={type} ref={ref => {
setCameraRef(ref) ;
}}>
<View
style={{
flex: 1,
backgroundColor: 'transparent',
justifyContent: 'flex-end'
}}>
<TouchableOpacity style={{alignSelf: 'center', marginBottom: 20}} onPress={async() => {
if(cameraRef){
let photo = await cameraRef.takePictureAsync({ skipProcessing: true });
MediaLibrary.saveToLibraryAsync(photo.uri);
}
}}>
<View style={{
borderWidth: 2,
borderColor: 'white',
height: 50,
width:50,
display: 'flex',
justifyContent: 'center',
alignItems: 'center',
borderRadius: 25,
}}
>
<View style={{
borderWidth: 2,
borderColor: 'white',
height: 40,
width:40,
backgroundColor: 'white',
borderRadius: 25}} >
</View>
</View>
</TouchableOpacity>
</View>
</Camera>
</View>
);
}
ImageManipulator comes with expo, you can compress, resize, rotate, crop and many more.
import { ImageManipulator } from 'expo';
const manipResult = await ImageManipulator.manipulate(
imageUri,
[{ resize: { width: 640, height: 480 } }],
{ format: 'jpg' }
);
Checkout https://docs.expo.io/versions/latest/sdk/imagemanipulator/