如何从uri下载音频文件并保存在Windows Phone 8的本地文件夹中？ [英] how to download audio file from uri and save in local folder in windows phone 8?

问题描述

我见过这类问题，但没有一个符合我的要求。我的服务器里有各种类型的铃声。现在我需要知道如何读取这些音频文件并保存到我的Windows Phone 8目录中。请帮我;我在等你宝贵的建议。先谢谢

I've seen this type of question but none of those goes to my requirements. I've got various types of ringtone in my server. now i need to know how to read those audio file and save into my windows phone 8 directory. Please help me; I'm waiting for your valuable suggestion. Thanks in Advance

推荐答案

//////下载并保存

private void addButton_Click（object sender，RoutedEventArgs e）

{



WebClient webClient = new WebClient（）;

webClient.OpenReadAsync（new Uri（https://dl.dropboxusercontent.com/u/65265347/dog38catsi_a2yn44rm.mp3，UriKind.RelativeOrAbsolute））;

webClient.OpenReadCompleted + = webClient_OpenReadCompleted;



}







无效webClient_OpenReadCompleted（object sender，OpenReadCompletedEventArgs e）

{

string fileName =createmytone.mp3;

Debug.WriteLine（e.Result） ;

使用（IsolatedStorageFile myIsolatedStorage = IsolatedStorageFile.GetUserStoreForApplication（））

{

if（myIsolatedStorage.FileExists（fileName））

{

myIsolatedStorage.DeleteFile（fileName）;

}



使用（IsolatedStorageFileStream fileStream = new IsolatedStorageFileStream（fileName，FileMode.Create，myIsolatedStorage））

{

using（ BinaryWriter writer = new BinaryWriter（fileStream））

{

Stream resourceStream = e.Result as Stream;

//streamResourceInfo.Stream;

long length = resourceStream.Length;

byte [] buffer = new byte [32];

int readCount = 0;

使用（BinaryReader reader = new BinaryReader（resourceStream））

{

//以块的形式读取文件以减少内存消耗并提高性能

while（readCount< length）

{

int actual = reader.Read（buffer，0，buffer.Length）;

readCount + = actual;

writer.Write（buffer，0，actual）;

}

}

}

}

}

}

< b> ////设置为铃声

SaveRingtoneTask saveRingtoneTask = null;

private void setRingtoneButton_Click（object sender，RoutedEventArgs e）

{

尝试

{

string isoStorePath = string.Concat（isostore：/，createmytone.mp3 ）;

saveRingtoneTask.Source = new Uri（isoStorePath）;

saveRingtoneTask.DisplayName =我的铃声......;

saveRingtoneTask .Show（）;

}

catch（例外情况）

{

MessageBox.Show（例如消息）;

}

}

////// For Download and save
private void addButton_Click(object sender, RoutedEventArgs e)
{

WebClient webClient = new WebClient();
webClient.OpenReadAsync(new Uri("https://dl.dropboxusercontent.com/u/65265347/dog38catsi_a2yn44rm.mp3", UriKind.RelativeOrAbsolute));
webClient.OpenReadCompleted+=webClient_OpenReadCompleted;

}



void webClient_OpenReadCompleted(object sender, OpenReadCompletedEventArgs e)
{
string fileName = "createmytone.mp3";
Debug.WriteLine(e.Result);
using (IsolatedStorageFile myIsolatedStorage = IsolatedStorageFile.GetUserStoreForApplication())
{
if (myIsolatedStorage.FileExists(fileName))
{
myIsolatedStorage.DeleteFile(fileName);
}

using (IsolatedStorageFileStream fileStream = new IsolatedStorageFileStream(fileName, FileMode.Create, myIsolatedStorage))
{
using (BinaryWriter writer = new BinaryWriter(fileStream))
{
Stream resourceStream = e.Result as Stream;
//streamResourceInfo.Stream;
long length = resourceStream.Length;
byte[] buffer = new byte[32];
int readCount = 0;
using (BinaryReader reader = new BinaryReader(resourceStream))
{
// read file in chunks in order to reduce memory consumption and increase performance
while (readCount < length)
{
int actual = reader.Read(buffer, 0, buffer.Length);
readCount += actual;
writer.Write(buffer, 0, actual);
}
}
}
}
}
}
//// Set as Ringtone
SaveRingtoneTask saveRingtoneTask = null;
private void setRingtoneButton_Click(object sender, RoutedEventArgs e)
{
try
{
string isoStorePath = string.Concat("isostore:/", "createmytone.mp3");
saveRingtoneTask.Source = new Uri(isoStorePath);
saveRingtoneTask.DisplayName = "My Ringtone...";
saveRingtoneTask.Show();
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}

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