How to create a folder/file browser

Ionic Framework ionic-v3
1

Hi, i have some code but my problem is that ‘entries’ is undefined in the success function and i don’t know why :frowning:

ionViewDidLoad() {
    console.log('ionViewDidLoad ModalConfFolderPage');
    console.log(this.file.externalRootDirectory);
    let path: string = this.file.externalRootDirectory;
    this.listPath(path);
}

listPath(path: string){
  	this.file.resolveDirectoryUrl(path).then((dirEntry) => {
  			var directoryReader = dirEntry.createReader();
        	directoryReader.readEntries(onSuccessCallback,onFailCallback);
  		}, (errRoot: any) => {
  			console.log('ERROR resolveDirectoryUrl');
  		});

//----------------PROBLEMS HERE!!--------------------------
  		function onSuccessCallback(entries){
  			console.log('SUCCESS');
  			console.log(entries.lenght);
  			console.log(entries[0]);
	    	for(var i=0; i<entries.lenght; i++){
	    		let row:any = entries[i];
	    		let cad:string = row.nativeURL+row.name;
	    		if(row.isDirectory){
	    			this.folders.push(cad);
	    			console.log(this.folders[i]);
	    		}
	    	}
	    }

	    function onFailCallback(e) {
	    	console.log(e);
	    }
  }

In my view i can’t see folder list because ‘entries’ is undefined and so for loop is skipped. Any sugest?

2

Where does this come from? What is this?

3

from constructor, i’m using file plugin native and this is its import right?:
import { File } from '@Ionic-native/file';

constructor:

constructor( public file: File) {  	  
}

//and then the rest of code
4

Never type the word “function” inside of one. Always use a lambda or arrow function. I’m 80% sure you are losing execution context.

5

of curse, i’m gonna test your suggest and i’ll come back with my results :slight_smile: