本文介绍了如何将图片从 React Native 相机胶卷保存到特定文件夹的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
So I'm using Expo's Camera API to take a picture, like so:
takePicture = async function() {
if(this.camera) {
this.camera.takePictureAsync().then(data => {
CameraRoll.saveToCameraRoll(data.uri);
}).then(() => {
this.setState({
photoId: this.state.photoId + 1,
});
});
}
};
Now, I'd like to specifically retrieve the pictures I take with this app to work with later. I figure an easy way to do this would be if the app saved its pictures to a separate folder in the camera roll, much like how Instagram makes its own folder in there.
How would I go about having the app create its own folder in the camera roll, and then saving pictures to it?
解决方案
On Android, you can use react-native-fetch-blob and its File System Access API (PictureDir constant).
For example, I do:
try {
const data = await this.camera.takePictureAsync()
await RNFetchBlob.fs.mkdir(`${RNFetchBlob.fs.dirs.PictureDir}/myfolder`)
await RNFetchBlob.fs.mv(
data.api,
`${RNFetchBlob.fs.dirs.PictureDir}/myfolder/${moment().unix()}.jpg`
)
} catch () {
...
}
https://github.com/wkh237/react-native-fetch-blob/wiki/File-System-Access-API
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