Question

我正在使用cordova-ionic框架来构建应用程序。我是iOS或iPhone的新手在我的要求中，我必须阅读应用程序中的文件。我在Android应用程序中读取文件但相同的代码显示错误（代码：5）。

我正在遵循代码类型：

在android中：

$cordovaFile.writeFile(( 'user.json', data, {'append':false} )).then(function(result) {
  alert('file created.');
    alert(JSON.stringify(result));
}, function(err) {
    // An error occured. Show a message to the user
    alert('file writed');
    alert(JSON.stringify(err));
});

我可以创建文件，写入，读取数据和删除文件但是在ios手机中我无法使用相同的代码创建文件。

iPhone中的

：

var data = {"user":{"name":"errer","email":"sdsdff@gmail.com","username":"sdfsdfsd"}};

$cordovaFile.writeFile(( 'user.json', data, {'append':false} )).then(function(result) {
    // Success!
    alert('file created.');
    alert(JSON.stringify(result));
}, function(err) {
    // An error occured. Show a message to the user
    alert('file writed');
    alert(JSON.stringify(err));
});

我只是更改我的目录是cordova.file.cacheDirecotry / cordova.file.applicationDirectory

$cordovaFile.createFile(( cordova.file.cacheDirecotry+'user.json', true )).then(function(result) {
    // Success!
    alert('file created.');
    alert(JSON.stringify(result));
}, function(err) {
    // An error occured. Show a message to the user
    alert('file writed');
    alert(JSON.stringify(err));
});

总是得到错误，如代码：12或代码：5

请帮我解决这个问题或者给我一个获取应用程序文件路径的想法

Answer 1

我有一些进展。

首先，我提醒我的cordova.file.dataDirectory或cordova.file.documentsDirectory。他们是

file:///var/mobile/...../Library/NoCloud

和

file:///var/mobile/..../Documents

然后我创建一个没有前缀的文件并成功。参考此https://github.com/driftyco/ng-cordova/issues/362

并且成功消息显示文件的本机URL保存在
中
file:///var/mobile/...../Library/files

这很奇怪。顺便说一句，我添加了

<preference name="iosPersistentFileLocation" value="Library" />

根据https://github.com/apache/cordova-plugin-file/blob/master/doc/index.md#ios-persistent-storage-location

所有测试都在IOS上运行，我没有测试Android。

<强>更新

以下所有代码均适用于我并提供成功回复

$cordovaFile.checkFile('/test.data') $cordovaFile.createFile('test.data',false) $cordovaFile.checkDir('/')

希望这可以解决您的问题。

Answer 2

/*
Here is what I am using for my Android and IOS apps
Keep attention to a couple of things:
-	Android and IOS have other directorynames for files
-	Android devices have different root (myFSRootDirectory1 = Samsung Tab 3, msFSRootDirectory2 = Samsung SII)
-	$cordovaFile functions prefixes all pathnames with root
$cordovaFileTransfer functions needs absolute pathnames

Here I create the prefixes for File functions and FileTransfer functions for Android and IOS
*/

// The $ionicPlatform and ionic.Platorm are from Ionic framework
//  

$ionicPlatform.ready(function() {
	if (ionic.Platform.isAndroid()) {
// If running on Android
console.log('cordova.file.externalDataDirectory: ' + cordova.file.externalDataDirectory);
//
// I use cordova.file.externalDataDirectory because this url is for Android devices
// If you remove the app from the device these url are cleared too on the device. So keep it clean.
// Remove the root from cordova.file.externalDataDirectory
// 
			myFsRootDirectory1 = 'file:///storage/emulated/0/'; // path for tablet
			myFsRootDirectory2 = 'file:///storage/sdcard0/'; // path for phone
			fileTransferDir = cordova.file.externalDataDirectory;
			if (fileTransferDir.indexOf(myFsRootDirectory1) === 0) {
				fileDir = fileTransferDir.replace(myFsRootDirectory1, '');
			}
			if (fileTransferDir.indexOf(myFsRootDirectory2) === 0) {
				fileDir = fileTransferDir.replace(myFsRootDirectory2, '');
			}
console.log('Android FILETRANSFERDIR: ' + fileTransferDir);
console.log('Android FILEDIR: ' + fileDir);
		}
		if (ionic.Platform.isIOS()) {
// if running on IOS
console.log('cordova.file.documentsDirectory: ' + cordova.file.documentsDirectory);
// I use cordova.file.documentsDirectory because this url is for IOS (NOT backed on iCloud) devices
			fileTransferDir = cordova.file.documentsDirectory;
			fileDir = '';
console.log('IOS FILETRANSFERDIR: ' + fileTransferDir);
console.log('IOS FILEDIR: ' + fileDir);
		}

	if (ionic.Platform.isAndroid() || ionic.Platform.isIOS()) {
//
// Just functions from the list below one by one ( or chain them)
//
	}
});



// Download file from 'http://www.yourdomain.com/test.jpg' to test/one/test.jpg on device Filesystem
var hostPath = 'http://www.yourdomain.com/test.jpg';
var clientPath = fileTransferDir + 'test/one/test.jpg';
var fileTransferOptions = {};

$cordovaFile.downloadFile(hostPath, clientPath, true, fileTransferOptions).then (function() {
});
// Create dir test
$cordovaFile.createDir(fileDir + 'test/').then( function(dirEntry) {
});
// Create dir aganin in dir test
$cordovaFile.createDir(fileDir + 'test/one/').then( function(dirEntry) {
});
// Create empty file test.txt in test/again/
$cordovaFile.createFile(fileDir + 'test/one/test.txt', true).then( function(fileEntry) {
});
// List of files in test/again
$cordovaFile.listDir(fileDir + 'test/one/').then( function(entries) {
console.log('list dir: ', entries);
});
// Write some text into file 
$cordovaFile.writeFile(fileDir + 'test/one/test.txt', 'Some text te test filewrite', '').then( function(result) {
});
// Read text written in file
$cordovaFile.readAsText(fileDir + 'test/one/test.txt').then( function(result) {
console.log('readAsText: ', result);
});

Answer 3

也许是因为拼写错误？你有cordova.file.cacheDirecotry。不应该是：cordova.file.cacheDirectory？

Answer 4

参阅原始文件： - https://github.com/apache/cordova-plugin-file/blob/master/doc/index.md#ios-file-system-layout

iOS将某些目录设置为只读。尝试改变你的路径。

如果它不适合你，请告诉我。

cordova-ionic ngCordova ios或iPhone文件读取错误代码5 ENCODING_ERR

4 个答案: