How to check a file's existence in phone directory with phonegap

Question

I\'m writing an Android application with Phonegap 1.4.1 and Sencha that downloads and reads pdf files. How can I check whether the file exists in the phone directory using e

Answer 1

You could check if the file exists using the FileReader object from phonegap. You could check the following:

var reader = new FileReader();
var fileSource = 

reader.onloadend = function(evt) {

    if(evt.target.result == null) {
       // If you receive a null value the file doesn't exists
    } else {
        // Otherwise the file exists
    }         
};

// We are going to check if the file exists
reader.readAsDataURL(fileSource);