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Posted to issues@cordova.apache.org by "Filip Maj (JIRA)" <ji...@apache.org> on 2013/02/20 00:15:12 UTC
[jira] [Updated] (CB-2494) Some wonky FileWriting business going on
in Android
[ https://issues.apache.org/jira/browse/CB-2494?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Filip Maj updated CB-2494:
--------------------------
Description:
I've added some code to write out the LICENSE file from the cordova-mobile-spec project to the PERSISTENT + TEMPORARY FileSystem locations, with the intent of reading them via the File API and comparing performance vs a similar action using XHR.
The following code reports to work well, but I am having trouble locating the file on Android File Transfer or ADB shell. Not sure if it works or not? Heh.
The code below should work, just make sure the initial XHR relative URL points to the license file in your case properly.
{code}
// Write the LICENSE file out to PERSISTENT + TEMPORARY locations.
var xhr = new XMLHttpRequest();
xhr.open("GET", "../LICENSE", true);
xhr.onreadystatechange = function() {
if (xhr.readyState == 4 && (xhr.status == 200 || xhr.status === 0)) {
var APL = xhr.responseText;
var approx_size = 12000; // 11-12kb
window.requestFileSystem(LocalFileSystem.PERSISTENT, approx_size, function(persistent_fs) {
persistent_fs.root.getFile("LICENSE", {create:true, exclusive:false}, function(entry) {
console.log(JSON.stringify(entry));
entry.createWriter(function(writer) {
writer.onwriteend = function(evt) {
window.requestFileSystem(LocalFileSystem.TEMPORARY, approx_size, function(temp_fs) {
temp_fs.root.getFile("LICENSE", {create:true, exclusive:false}, function(t_entry) {
console.log(JSON.stringify(t_entry));
t_entry.createWriter(function(t_writer) {
t_writer.onwriteend = function(evt) {
alert('done!');
};
t_writer.write(APL);
}, function(e) {
alert('Error creating LICENSE FileWriter');
});
}, function(e) {
alert('Error getting LICENSE file entry');
});
}, function(e) {
alert('Error retrieving persistent FS');
});
};
writer.write(APL);
}, function(e) {
alert('Error creating LICENSE FileWriter');
});
}, function(e) {
alert('Error getting LICENSE file entry');
});
}, function(e) {
alert('Error retrieving persistent FS');
});
}
};
xhr.send(null);
{code}
Environment:
2.5.0rc1
On a Galaxy Nexus running 4.2.2
Affects Version/s: 2.5.0
> Some wonky FileWriting business going on in Android
> ---------------------------------------------------
>
> Key: CB-2494
> URL: https://issues.apache.org/jira/browse/CB-2494
> Project: Apache Cordova
> Issue Type: Bug
> Components: Android
> Affects Versions: 2.5.0
> Environment: 2.5.0rc1
> On a Galaxy Nexus running 4.2.2
> Reporter: Filip Maj
> Assignee: Joe Bowser
>
> I've added some code to write out the LICENSE file from the cordova-mobile-spec project to the PERSISTENT + TEMPORARY FileSystem locations, with the intent of reading them via the File API and comparing performance vs a similar action using XHR.
> The following code reports to work well, but I am having trouble locating the file on Android File Transfer or ADB shell. Not sure if it works or not? Heh.
> The code below should work, just make sure the initial XHR relative URL points to the license file in your case properly.
> {code}
> // Write the LICENSE file out to PERSISTENT + TEMPORARY locations.
> var xhr = new XMLHttpRequest();
> xhr.open("GET", "../LICENSE", true);
> xhr.onreadystatechange = function() {
> if (xhr.readyState == 4 && (xhr.status == 200 || xhr.status === 0)) {
> var APL = xhr.responseText;
> var approx_size = 12000; // 11-12kb
> window.requestFileSystem(LocalFileSystem.PERSISTENT, approx_size, function(persistent_fs) {
> persistent_fs.root.getFile("LICENSE", {create:true, exclusive:false}, function(entry) {
> console.log(JSON.stringify(entry));
> entry.createWriter(function(writer) {
> writer.onwriteend = function(evt) {
> window.requestFileSystem(LocalFileSystem.TEMPORARY, approx_size, function(temp_fs) {
> temp_fs.root.getFile("LICENSE", {create:true, exclusive:false}, function(t_entry) {
> console.log(JSON.stringify(t_entry));
> t_entry.createWriter(function(t_writer) {
> t_writer.onwriteend = function(evt) {
> alert('done!');
> };
> t_writer.write(APL);
> }, function(e) {
> alert('Error creating LICENSE FileWriter');
> });
> }, function(e) {
> alert('Error getting LICENSE file entry');
> });
> }, function(e) {
> alert('Error retrieving persistent FS');
> });
> };
> writer.write(APL);
> }, function(e) {
> alert('Error creating LICENSE FileWriter');
> });
> }, function(e) {
> alert('Error getting LICENSE file entry');
> });
> }, function(e) {
> alert('Error retrieving persistent FS');
> });
> }
> };
> xhr.send(null);
> {code}
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