我需要使下载的文件(例如 mp3 图片等)在相册或媒体播放器等媒体应用程序中可见
它是文件 chmod 还是不可读？此类中的一切都很好，但它仅在下载文件夹中显示下载的文件
这是我的课
public class Download extends AsyncTask<String, Void, String> {
ProgressDialog mProgressDialog;
Context context;
String file_url,file_name;
public Download(Context context,String url , String file_name) {
this.context = context;
this.file_url = url;
this.file_name = file_name;
}
protected void onPreExecute() {
mProgressDialog = ProgressDialog.show(context, "",
"Please wait, Download …");
}
protected String doInBackground(String... params) {
// //////////////////////
try {
URL url = new URL(file_url);
HttpURLConnection c = (HttpURLConnection) url.openConnection();
c.setRequestMethod("GET");
c.setDoOutput(true);
c.connect();
String[] path = url.getPath().split("/");
String mp3 = path[path.length - 1];
int lengthOfFile = c.getContentLength();
String PATH = Environment.getExternalStorageDirectory()+ "/downloads/" ;
File file = new File(PATH);
file.mkdirs();
String fileName = file_name;
File outputFile = new File(file , fileName);
FileOutputStream fos = new FileOutputStream(outputFile);
InputStream is = c.getInputStream();
byte[] buffer = new byte[1024];
int len1 = 0;
while ((len1 = is.read(buffer)) != -1) {
fos.write(buffer, 0, len1);
}
fos.close();
is.close();
} catch (IOException e) {
e.printStackTrace();
}
return "done";
}
protected void onPostExecute(String result) {
if (result.equals("done")) {
mProgressDialog.dismiss();
}
}
}
有什么想法吗？
最佳答案
您需要调用 MediaScannerConnection 并告诉它扫描您的文件。文档 here .
关于java - 下载的文件在用户媒体应用程序中不可见？，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/15776690/