ios - 使用air将文件保存到IOS设备

Question

我一直在尝试使用urlstream将文件从服务器保存到ios设备上，但它不起作用(在android设备上可以正常工作。我尝试使用(documentsDirectory)，但它也不起作用。我使用了许多其他方法，例如(file.download)和其他，但没有用，请提供任何帮助

我正在使用Flash Pro CS6。

脚本样本:

import flash.filesystem.*;
import flash.events.ProgressEvent;

var urlString:String = "http://example.sample.mp3"; 
var urlReq:URLRequest = new URLRequest(urlString); 
var urlStream:URLStream = new URLStream(); 
var fileData:ByteArray = new ByteArray(); 
urlStream.addEventListener(Event.COMPLETE, loaded); 
urlStream.addEventListener(ProgressEvent.PROGRESS, progressHandler);


urlStream.load(urlReq); 

function loaded(event:Event):void { 
    urlStream.readBytes(fileData, 0, urlStream.bytesAvailable); 
    writeAirFile(); 

} 

function writeAirFile():void { 
   var file:File = File.applicationStorageDirectory.resolvePath("sample.mp3"); 
   var fileStream:FileStream = new FileStream(); 
   fileStream.open(file, FileMode.WRITE); 
   fileStream.writeBytes(fileData, 0, fileData.length); 
   fileStream.close(); 


   trace("The file is written."); 
}

function progressHandler(event:Event):void {
        trace ("progressHandler: " + event);

    }

Answer 1

在iOS上测试

_urlString =  "http://example.sample.mp3";
_urlReq = new URLRequest(_urlString);
_urlStream = new URLStream();
_urlStream.addEventListener(flash.events.ProgressEvent.PROGRESS, progressHandler, false, 0, true);
_urlStream.addEventListener(flash.events.Event.COMPLETE, saveFileToDisc, false, 0, true);                       
_urlStream.addEventListener(flash.events.IOErrorEvent.IO_ERROR, errorHandler, false, 0, true);
_urlStream.load(_urlReq);


private function progressHandler(evt:flash.events.ProgressEvent):void {
trace("progress: " + event.target.progress);
}

private function errorHandler(evt:flash.events.IOErrorEvent):void {
//do something
}

private function saveFileToDisc(event:flash.events.Event):void {
_fileData = new ByteArray();
_urlStream.readBytes(_fileData, 0, _urlStream.bytesAvailable);

_file = File.applicationStorageDirectory.resolvePath("sample.mp3");
_file.preventBackup = true;
_writeFileStream.addEventListener(flash.events.IOErrorEvent.IO_ERROR, filestreamErrorHandler, false, 0, true);
_writeFileStream.addEventListener(flash.events.Event.CLOSE, fileSaved, false, 0, true);             
_writeFileStream.openAsync(_file, FileMode.UPDATE);         
_writeFileStream.writeBytes(_fileData, 0, _fileData.length);            
_writeFileStream.close();
}

private function filestreamErrorHandler(evt:flash.events.IOErrorEvent):void {
//do something
}

private function fileSaved(closeEvent:flash.events.Event):void {
//trace("file saved");
_writeFileStream.removeEventListener(flash.events.IOErrorEvent.IO_ERROR, filestreamErrorHandler);
_writeFileStream.removeEventListener(flash.events.Event.CLOSE, fileSaved);
_urlString = null;
_urlReq = null;
_urlStream = null;
_file = null;
_fileData.length = 0;
_fileData = null;
}