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我正在嘗試創建一個程序,將MP3保存到Android,可以通過ASTRO訪問。我試圖將文件保存到/ sdcard/media/audio。儘管應用程序在Logcat/DDMS上沒有發生任何錯誤,但無法找到該文件。我添加了WRITE_EXTERNAL_STORAGE權限(以及Internet等),所以不是這樣。Android:將文件保存到SD卡?
是否有應用程序將文件保存到SD卡的限制?
方法叫:
public void findSong(View view) throws Exception {
edittext = (EditText) findViewById(R.id.edittext);
searchTerm = edittext.getText().toString();
String address;
address = getMusic(searchTerm);
ImageManager img = new ImageManager(); //calls ImageManager (below)
img.DownloadFromUrl(address, title + ".mp3");
}
的下載方法:
private final String PATH = "/data/data"; //put the downloaded file here
public void DownloadFromUrl(String imageURL, String fileName) {
//this is the downloader method
try {
URL url = new URL(imageURL); //you can write here any link
File file = new File(fileName);
long startTime = System.currentTimeMillis();
Log.d("ImageManager", "download begining");
Log.d("ImageManager", "download url:" + url);
Log.d("ImageManager", "downloaded file name:" + fileName);
/* Open a connection to that URL. */
URLConnection ucon = url.openConnection();
/* Define InputStreams to read from the URLConnection. */
InputStream is = ucon.getInputStream();
BufferedInputStream bis = new BufferedInputStream(is);
/* Read bytes to the Buffer until there is nothing more to read(-1). */
ByteArrayBuffer baf = new ByteArrayBuffer(50);
int current = 0;
while ((current = bis.read()) != -1) {
baf.append((byte) current);
}
/* Convert the Bytes read to a String. */
FileOutputStream fos = new FileOutputStream(PATH + file);
fos.write(baf.toByteArray());
fos.close();
Log.d("ImageManager", "download ready in"
+ ((System.currentTimeMillis() - startTime)/1000)
+ " sec");
} catch (IOException e) {
Log.d("ImageManager", "Error: " + e);
}
}
任何幫助表示讚賞。
嘗試一下就像寫出一個靜態內容的虛擬文本文件,它不必在您的onCreate()中下載 - 通常不是一個好主意,但您只需要在代碼中包含幾個分鐘來驗證你已經想出瞭如何寫文件。 – 2010-12-07 22:06:17
您的代碼顯示您將文件放在'/ data/data'中,但是您的問題提及您將其放入'/ sdcard/media/audio' – Squonk 2010-12-07 23:52:49