I'm trying to work with files on IOS, using Phonegap[cordova 1.7.0]. I read how to access files and read them on the API Documentation of phone gap. But I don't know, when the file is read where will it be written ? & How can I output the text, image, or whatever the text is containing on the iPhone screen?
Here's the code I'm using:
function onDeviceReady() {
window.requestFileSystem(LocalFileSystem.PERSISTENT, 0, gotFS, fail);
}
function gotFS(fileSystem) {
fileSystem.root.getFile("readme.txt", null, gotFileEntry, fail);
}
function gotFileEntry(fileEntry) {
fileEntry.file(gotFile, fail);
}
function gotFile(file){
readDataUrl(file);
readAsText(file);
}
function readDataUrl(file) {
var reader = new FileReader();
reader.onloadend = function(evt) {
console.log("Read as data URL");
console.log(evt.target.result);
};
reader.readAsDataURL(file);
}
function readAsText(file) {
var reader = new FileReader();
reader.onloadend = function(evt) {
console.log("Read as text");
console.log(evt.target.result);
};
reader.readAsText(file);
}
function fail(evt) {
console.log(evt.target.error.code);
}
As of Cordova 3.5 (at least), FileReader
objects only accept File
objects, not FileEntry
objects (I'm not sure about prior releases).
Here's an example that will output the contents a local file readme.txt
to the console. The difference here from Sana's example is the call to FileEntry.file(...)
. This will provide the File
object needed for the call to the FileReader.readAs
functions.
function readFile() {
window.requestFileSystem(window.LocalFileSystem.PERSISTENT, 0, function(fileSystem) {
fileSystem.root.getFile('readme.txt',
{create: false, exclusive: false}, function(fileEntry) {
fileEntry.file(function(file) {
var reader = new window.FileReader();
reader.onloadend = function(evt) {console.log(evt.target.result);};
reader.onerror = function(evt) {console.log(evt.target.result);};
reader.readAsText(file);
}, function(e){console.log(e);});
}, function(e){console.log(e);});
}, function(e) {console.log(e);});
}
That's what worked for me in case anyone needs it:
function ReadFile() {
var onSuccess = function (fileEntry) {
var reader = new FileReader();
reader.onloadend = function (evt) {
console.log("read success");
console.log(evt.target.result);
document.getElementById('file_status').innerHTML = evt.target.result;
};
reader.onerror = function (evt) {
console.log("read error");
console.log(evt.target.result);
document.getElementById('file_status').innerHTML = "read error: " + evt.target.error;
};
reader.readAsText(fileEntry); // Use reader.readAsURL to read it as a link not text.
};
console.log("Start getting entry");
getEntry(true, onSuccess, { create: false });
};
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