/**
* 从服务器下载文件，文件路径在sd卡根目录下
*
* @param path，文件路径，即所在url
* @param filename,下载文件保存的文件名
* @param pd，ProgressDialog，用于显示下载进程
* @return File，下载好的文件
* @throws Exception
*/
@SuppressLint("NewApi")
public static File getFileFromServer(String path, String filename, ProgressDialog pd)
throws Exception {
// 如果相等的话表示当前的sdcard挂载在手机上并且是可用的
if (Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)) {
URL url = new URL(path);
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
conn.setConnectTimeout(5000);
// 获取到文件的大小
pd.setProgressNumberFormat("%1dkb/%2dkb");
pd.setMax(conn.getContentLength() / 1024);
InputStream is = conn.getInputStream();
File file = new File(Environment.getExternalStorageDirectory().getPath(), filename);
if (file.exists()) file.delete();
file.createNewFile();
FileOutputStream fos = new FileOutputStream(file);
BufferedInputStream bis = new BufferedInputStream(is);
byte[] buffer = new byte[1024];
int len;
int total = 0;
while ((len = bis.read(buffer)) != -1) {
fos.write(buffer, 0, len);
total += len;
// 获取当前下载量
pd.setProgress(total / 1024);
}
fos.close();
bis.close();
is.close();
return file;
} else {
return null;
}
}
@Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
CharSequence title = getArguments().getCharSequence("title");
CharSequence message = getArguments().getCharSequence("message");
String progressNumberFormat = getArguments().getString("number-format");
NumberFormat progressPercentFormat =
(NumberFormat) getArguments().getSerializable("percent-format");
boolean spinner = getArguments().getBoolean("spinner", true);
ProgressDialog dialog = new ProgressDialog(getActivity());
dialog.setOnKeyListener(
new DialogInterface.OnKeyListener() {
@Override
public boolean onKey(DialogInterface dialog, int keyCode, KeyEvent event) {
return keyCode == KeyEvent.KEYCODE_SEARCH;
}
});
dialog.setProgressStyle(
spinner ? ProgressDialog.STYLE_SPINNER : ProgressDialog.STYLE_HORIZONTAL);
if (progressNumberFormat != null) {
dialog.setProgressNumberFormat(progressNumberFormat);
}
if (progressPercentFormat != null) {
dialog.setProgressPercentFormat(progressPercentFormat);
}
if (message != null) {
dialog.setMessage(message);
}
if (title != null) {
dialog.setTitle(title);
}
return dialog;
}
protected void onPreExecute() {
_dialog.setTitle("Loading Schools...");
_dialog.setMessage("This will only be done the first time");
_dialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
_dialog.setProgressNumberFormat(null);
_dialog.setCancelable(false);
if (!(_dialog.isShowing())) _dialog.show();
}
public void createProgressDialog(String mediaName) {
progressDialog = new ProgressDialog(WebViewActivity.this);
progressDialog.setTitle(getString(R.string.notification_download_title_pending) + mediaName);
progressDialog.setMessage(getString(R.string.notification_download_pending));
progressDialog.setProgressStyle(progressDialog.STYLE_HORIZONTAL);
progressDialog.setProgress(0);
progressDialog.setMax(100);
progressDialog.setProgressNumberFormat(null);
progressDialog.show();
}
@Override
protected void onPreExecute() {
// setup the download dialog and display it
downloadDialog = new ProgressDialog(getActivity());
downloadDialog.setMessage(getString(R.string.downloading));
downloadDialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
downloadDialog.setProgress(0);
downloadDialog.setMax(100);
downloadDialog.setCancelable(false);
downloadDialog.setProgressNumberFormat(null);
downloadDialog.show();
}
@Override
protected Boolean doInBackground(String... params) {
DatabaseHelper db = new DatabaseHelper(_context);
try {
JSONArray json = new JSONArray(params[0]);
_dialog.setProgressNumberFormat("%1d / %2d");
_dialog.setProgress(0);
_dialog.setMax(json.length());
for (int i = 0; i < json.length(); i++) {
JSONObject jsonObject = json.getJSONObject(i);
Directory directory =
new Directory(
jsonObject.getInt("Id"),
jsonObject.getInt("SchoolId"),
jsonObject.getString("Name"),
jsonObject.getString("Telephone"),
jsonObject.getString("Fax"),
jsonObject.getString("Email"),
jsonObject.getString("Principal"),
jsonObject.getString("SchoolWebsite"),
jsonObject.getString("Street"),
jsonObject.getString("Suburb"),
jsonObject.getString("City"),
jsonObject.getString("RegionalCouncil"),
jsonObject.getString("PostalAddress1"),
jsonObject.getString("PostalAddress2"),
jsonObject.getString("PostalAddress3"),
jsonObject.getString("PostalCode"),
jsonObject.getString("UrbanArea"),
jsonObject.getString("SchoolType"),
jsonObject.getString("Definition"),
jsonObject.getString("Authority"),
jsonObject.getString("GenderOfStudents"),
jsonObject.getString("TerritorialAuthorityWithAucklandLocalBoard"),
jsonObject.getString("MinistryOfEducationLocalOffice"),
jsonObject.getString("EducationRegion"),
jsonObject.getString("GeneralElectorate"),
jsonObject.getString("MāoriElectorate"),
jsonObject.getString("CensusAreaUnit"),
jsonObject.getString("Ward"),
jsonObject.getDouble("Latitude"),
jsonObject.getDouble("Longitude"),
jsonObject.getInt("Decile"),
jsonObject.getInt("TotalSchoolRoll"),
jsonObject.getInt("EuropeanPākehā"),
jsonObject.getInt("Māori"),
jsonObject.getInt("Pasifika"),
jsonObject.getInt("Asian"),
jsonObject.getInt("Melaa"),
jsonObject.getInt("Other"),
jsonObject.getInt("ChangeId"),
jsonObject.getBoolean("Status"));
db.addDirectory(directory);
publishProgress(i);
}
} catch (JSONException e) {
e.printStackTrace();
return false;
}
return true;
}