How to use the react-native-document-picker.DocumentPicker.pick function in react-native-document-picker
To help you get started, we’ve selected a few react-native-document-picker examples, based on popular ways it is used in public projects.
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mattermost / mattermost-mobile / app / components / post_textbox / components / fileUploadButton.js View on Github 
attachFileFromFiles = async () => {
const {browseFileTypes} = this.props;
const hasPermission = await this.hasStoragePermission();
if (hasPermission) {
try {
const res = await DocumentPicker.pick({type: [browseFileTypes]});
if (Platform.OS === 'android') {
// For android we need to retrieve the realPath in case the file being imported is from the cloud
const newUri = await ShareExtension.getFilePath(res.uri);
if (newUri.filePath) {
res.uri = newUri.filePath;
} else {
return;
}
}
// Decode file uri to get the actual path
res.uri = decodeURIComponent(res.uri);
this.uploadFiles([res]);
} catch (error) {
// Do nothingreact-native-document-picker
A react native interface to access documents from dropbox, google drive, iCloud...
