How can i check if file exist with ionic - ionic-framework

Question

i am building a mobile app for both android and iOS i want to check if a directory exist in the users sd card or in-built memory, if the directory doesn't exist, then i will create the directory.
I checked the docs on ionic file transfer docs but i can't find anything useful, i searched online but found some code but its not working, the name of the directory that I want to create is softik, Here is the code
public storageDirectory:any;
download() {
this.chkmkDir().then(async ()=>{
const fileTransfer: FileTransferObject = this.fileTransfer.create();
this.storageDirectory = `${this.file.externalRootDirectory}test.mp4`;
fileTransfer.onProgress((progressEvent)=>this.progress=Math.round((progressEvent.loaded / progressEvent.total) * 100))
fileTransfer.download(this.url,this.storageDirectory + 'test.mp4', true).then((entry) =>
console.log('Berhasil download dan tersimpan di : ' + this.storageDirectory + "test.jpeg"),
error => console.log('gagal : ' + JSON.stringify(error)),
);
}).catch(err=>console.log())
}
chkmkDir(){
return new Promise((resolve, reject)=>{
this.file.checkDir(this.file.externalRootDirectory, 'softik').then(res=>resolve()
).catch(err => {
this.file.createDir(this.file.externalRootDirectory, 'softik',false).then(res =>resolve())
.catch(err=>reject(JSON.stringify(err)));
});
})
}
Pls what am i going wrong

Answer 1

first you should use File plugin
then you can search for file or Directory
see this docs https://ionicframework.com/docs/v3/native/file/#checkFile