问题描述
我previously发了一个帖子,询问如何发送.3GPP音频文件到这里的解析云:
Xamarin C#的Android - .3GPP音频转换为字节&安培;发送给的parseObject
I previously made a post asking how to send a .3gpp audio file up to the parse cloud here:Xamarin C# Android - converting .3gpp audio to bytes & sending to parseObject
我已经设法成功地做到这一点,解析的数据管理器,我可以点击该文件的链接,播放从Android设备发送成功的声音。
这里的code的数据上传到云:
I have managed to do this successfully, on parse's data manager, I can click the file's link and play the sound sent from my android device successfully.Here's the code for uploading the data to the cloud:
async Task sendToCloud(string filename)
{
ParseClient.Initialize ("Censored Key", "Censored Key");
string LoadPath = System.Environment.GetFolderPath(System.Environment.SpecialFolder.ApplicationData);
string savetheFile = sName + ".3gpp";
string tempUserName;
LoadPath += savetheFile;
Console.WriteLine ("loadPath: " + LoadPath);
try
{
byte[] data = File.ReadAllBytes(LoadPath);
ParseFile file = new ParseFile(savetheFile, data);
await file.SaveAsync();
var auidoParseObject = new ParseObject("AudioWithData");
//Console.WriteLine(ParseUser.getUserName());
if (ParseUser.CurrentUser != null)
{
tempUserName = ParseUser.CurrentUser.Username.ToString();
}
else{
tempUserName = "Anonymous";
}
//tempUserName = ParseUser.CurrentUser.Username.ToString();
Console.WriteLine("PARSE USERNAME: " + tempUserName);
auidoParseObject["userName"] = tempUserName;
auidoParseObject["userName"] = tempUserName;
auidoParseObject["file"] = file;
await auidoParseObject.SaveAsync();
}
catch (Exception e)
{
Console.WriteLine("Failed to await audio object! {0}" + e);
}
}
因此,大家可以看到,我送了一个名为AudioWithData的parseObject。
这个对象有两个孩子:
用户的用户名-The谁上传的文件(字符串)
-The parseFile称为文件(它具有以下两个孩子)
--- SaveTheFile(,添加了一个包含音频文件的名称字符串用户,与.3GPP扩展输入的结尾,例如myAudioFile.3gpp
---数据(这包含音频文件的字节)
So as you can see, I'm sending a ParseObject called "AudioWithData".This object contains two children:-The username of the user who uploaded the file (string)-The parseFile called "file" (which has the following two children)---SaveTheFile (A string containing the name of the audio file, input by the user, with the .3gpp extension added on the end, for example "myAudioFile.3gpp"---data (this contains the bytes of the audio file)
我需要能够将文件下载到自己的Android设备,并通过MediaPlayer对象进行播放。
I need to be able to download the file onto my android device, and play it through a mediaplayer object.
我检查解析网站上的文档了,但我还没有成功地做到这一点:
(此处原谅我的伪查询语法)
SELECT(音频文件)(中的parseObject)WHERE(用户名=当前用户)
然后我,最终希望所有这些文件放到一个列表视图,当用户点击该文件,其播放音频。
I've checked over the documentation on the parse website, but I haven't managed to do this:(excuse my pseudo querying syntax here)SELECT (audio files) FROM (the parseObject) WHERE (the username = current user)I then, eventually, want to place all of these files into a listview, and when the user clicks the file, it plays the audio.
我试过了,但之后我真的不知道我用它做...
I've tried the following but I don't really know what I'm doing with it...
async Task RetrieveSound(string filename)
{
ParseClient.Initialize ("Censored key", "Censored key");
Console.WriteLine ("Hit RetrieveSound, filename = " + filename);
string username;
var auidoParseObject = new ParseObject("AudioWithData");
if (ParseUser.CurrentUser != null) {
username = ParseUser.CurrentUser.Username.ToString ();
} else {
username = "Anonymous";
}
string cloudFileName;
Console.WriteLine ("username set to: " + username);
var HoldThefile = auidoParseObject.Get<ParseFile>("audio");
//fgher
var query = from audioParseObject in ParseObject.GetQuery("userName")
where audioParseObject.Get<String>("userName") == username
select file;
IEnumerable<ParseFile> results = await query.FindAsync();
Console.WriteLine ("passed the query");
//wfojh
byte[] data = await new HttpClient().GetByteArrayAsync(results.Url);
Console.WriteLine ("putting in player...");
_player.SetDataSourceAsync (data);
_player.Prepare;
_player.Start ();
}
任何帮助将不胜AP preCIATED!即使是在正确方向上的一点将是巨大的!
谢谢!
Any help would be GREATLY APPRECIATED! Even a point in the right direction would be great!Thanks!
编辑 -
我真的开始在随后的行查询错误
(我不能发表图片,因为我的名气 - 我失去了进入我的主要StackOverflow的帐户:/)
链接在这里图片:
I'm actually getting a query error on the following lines(I can't post images because of my reputation - I lost access to my main stackOverflow account :/ )Links to images here:
第一个错误:
有任何想法吗?解析文档是模糊的这个问题。
first error: http://i.stack.imgur.com/PZBJr.png second error: http://i.stack.imgur.com/UkHvX.pngAny ideas? The parse documentation is vague about this.
推荐答案
这行会返回结果的集合
IEnumerable<ParseFile> results = await query.FindAsync();
您可能需要通过他们与的foreach
来重复,还是只挑选第一个
you either need to iterate through them with foreach
, or just pick the first one
// for testing, just pick the first one
if (results.Count > 0) {
var result = results[0];
byte[] data = await new HttpClient().GetByteArrayAsync(result.Url);
File.WriteAllBytes(some_path_to_a_temp_file, data);
// at this point, you can just initialize your player with the audio file path and play as normal
}
这篇关于Xamarin C#的Android和解析 - 下载parseFile一个内部的parseObject的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持!