#android #android-service #directory
#Android #android-сервис #каталог
Вопрос:
В моем проекте есть возможность загрузить набор файлов.Чтобы проверить доступность хранилища, я использовал приведенный ниже код
public static int getSDCardStatus() {
String extState = Environment.getExternalStorageState();
int status;
if (extState.equals(Environment.MEDIA_MOUNTED)) {
status = MOUNTED;
} else if (extState.equals(Environment.MEDIA_MOUNTED_READ_ONLY)) {
status = READ_ONLY;
} else {
status = UNMOUNTED;
}
return status;
}
private String getLoginFolders() {
// TODO Auto-generated method stub
File file = null;
int status = Constants.getSDCardStatus();
if (status == Constants.MOUNTED) {
File f = new File(
Environment
.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS),
"/SOTC_OFF/.nomedia");
f.mkdirs();
file = new File(
Environment
.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS),
"/SOTC_OFF/" sotcPref.getString("domain", "") "/"
sotcPref.getString("user_id", ""));
file.mkdirs();
}
return file.getAbsolutePath();
}
При загрузке в LG Nexus 4 и Samsung Nexus 4 все работает нормально. Но в Micromax a114 canvas 2.2 и Nexus 5 не работает нормально.
Для справки класс сервиса, который я использую для загрузки
public class DownloadService extends IntentService {
@Override
public void onDestroy() {
super.onDestroy();
if (Constants.DEBUG)
Log.i("StatusDownloadservice", "Ondestroy");
}
private int OFFSET;
private int LIMIT;
String data;
private final String TAG = "DownloadService";
private int result = Activity.RESULT_CANCELED;
public static int COMPLETED = 100;
public static int FAILED = 101;
public static int LOW_SPACE = 102;
public static int NETWORK_PROBLEM = 103;
public static int ASSERT_EXISIT = 104;
public static int PARTIALLY_DOWNLOADED = 105;
public static int NO_FILE = 105;
private NotificationManager notificationManager;
private Notification notification;
ConnectivityManager connMgr;
ArrayList<ConcurrentHashMap<String, String>> showAssetList;
RemoteViews contentView;
private SharedPreferences sotcPref;
PendingIntent contentIntent;
int downloadCount = 1;
String url;
String showname;
String showdatecreated;
String showId;
Messenger messenger;
int noofFiles;
Thread handleIntentThread = null;
Thread downloadJoinThread = null;
public Handler notifyHandler = new Handler();
int assetCount = 0;
// To track the app event
MixpanelAPI mMixpanel;
private SharedPreferences myPrefs;
// private boolean isServiceRunning=false;
public DownloadService() {
super("com.iw.sotc.show.offline.DownloadService");
if (Constants.DEBUG)
Log.d(TAG, "Offline step 5 " "DownloadService()constructor");
if (Constants.DEBUG)
Log.d(TAG, "DownloadService... Constructor");
OFFSET = 0;
LIMIT = 3;
}
@Override
public int onStartCommand(Intent intent, int flags, int startId) {
super.onStartCommand(intent, flags, startId);
return START_REDELIVER_INTENT;
}
@Override
protected void onHandleIntent(Intent intent) {
if (Constants.DEBUG)
Log.i("StatusDownloadservice", "OnhandleIntent");
// Initialize the Mixpanel library for tracking and push notifications.
mMixpanel = MixpanelAPI.getInstance(this, Constants.MIXPANEL_API_TOKEN);
myPrefs = getApplicationContext().getSharedPreferences("SOTCPref",
MODE_PRIVATE);
final Intent intentCpy = intent;
// synchronized (intentCpy) {
/*
* new Thread(new Runnable() {
*
* @Override public void run() {
*/
if (Constants.DEBUG)
Log.d(TAG, "Offline step 6 " "onHandleIntent");
connMgr = (ConnectivityManager) getApplicationContext()
.getSystemService(Context.CONNECTIVITY_SERVICE);
sotcPref = getApplicationContext().getSharedPreferences("SOTCPref",
MODE_PRIVATE);
if (Constants.DEBUG)
Log.d(TAG, "onHandleIntent.........");
Bundle extras = intentCpy.getExtras();
url = extras.getString("url");
showname = extras.getString("showname");
showdatecreated = extras.getString("showdatecreated");
// sara
if (showdatecreated.contains("/")) {
data = showdatecreated.replaceAll("/", "#");
if (Constants.DEBUG) {
System.out.println("date");
System.out.println(data);
}
} else {
data = showdatecreated;
if (Constants.DEBUG) {
System.out.println("date in else");
System.out.println(showdatecreated);
System.out.println(data);
}
}
showId = extras.getString("share_id");
noofFiles = extras.getInt("noofFiles");
messenger = (Messenger) extras.get("MESSENGER");
/*
* Intent notificationIntent = new Intent(); contentIntent =
* PendingIntent.getService( getApplicationContext(), 1,
* notificationIntent, 0);
*/
// contentIntent =
// PendingIntent.getActivity(getApplicationContext(), 0,
// notificationIntent, 0);
showNotification();
if (Constants.DEBUG)
Log.i("FOO", "Notification started");
if (showname.length() > 18)
showname = showname.substring(0, 17);
if (DownloadAssets.TOTAL_ASSET_COUNT == 0) {
if (Constants.DEBUG) {
Log.d(TAG, "Offline step 7 "
"if(DownloadAssets.TOTAL_ASSET_COUNT == 0)");
Log.i("Downloadassetvalue", ""
DownloadAssets.TOTAL_ASSET_COUNT);
}
// TODO Auto-generated method stub
downloadSetofAssets(OFFSET, LIMIT, url);
assetCount = DownloadAssets.TOTAL_ASSET_COUNT;
if (Constants.DEBUG)
Log.d(TAG, "Offline step 7 asset count :" assetCount);
DownloadAssets.TOTAL_ASSET_COUNT = 0;
}
if (assetCount > LIMIT) {
if (Constants.DEBUG)
Log.d(TAG, "Offline step 7.1 "
"if(DownloadAssets.TOTAL_ASSET_COUNT > LIMIT)");
for (OFFSET = LIMIT; OFFSET < assetCount;) {
if (Constants.DEBUG)
Log.d(TAG,
"Offline step 8.1 "
"for(OFFSET = LIMIT; OFFSET < DownloadAssets.TOTAL_ASSET_COUNT;)");
downloadSetofAssets(OFFSET, LIMIT, url);
OFFSET = OFFSET LIMIT;
}
DownloadAssets.TOTAL_ASSET_COUNT = 0;
}
if (Constants.DEBUG)
Log.d(TAG, "download check :downloadJoinThread is running");
if (Constants.DEBUG)
Log.i("DownloadingStatus", "InService");
if (downloadCount >= 1) {
result = DownloadService.COMPLETED;
// to notify the changes made after the offline
// coded by Karthikeyan V
showNotificationDownloadComplete("download successful.");
Message msg = Message.obtain();
try {
if (Constants.DEBUG)
Log.i("DownloadServicestatus", "Sendmessenger");
msg.arg1 = resu<
messenger.send(msg);
} catch (android.os.RemoteException e1) {
if (Constants.DEBUG)
Log.w(getClass().getName(), "Exception sending message", e1);
}
} else {
result = DownloadService.FAILED;
Message msg = Message.obtain();
msg.arg1 = resu<
try {
messenger.send(msg);
} catch (RemoteException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
// stopForeground(true);
/*
* notification.setLatestEventInfo(DownloadService.this,
* "Download Failed", "", contentIntent);
*/
showNotificationDownloadComplete("download failed.");
}
/*
* }
*
* }).start();
*/
/*
* //to notify the changes made after the offline
* ViewShowList.showListadapter.notifyDataSetChanged();
*/
// }
}
private void showNotificationDownloadComplete(String statusDownload) {
notificationManager = (NotificationManager) this
.getSystemService(Context.NOTIFICATION_SERVICE);
notification = new Notification(R.drawable.sotc_notification_icon, "",
System.currentTimeMillis());
contentView = new RemoteViews(getPackageName(),
R.layout.upload_progress_aftercomplete);
notification.flags |= Notification.FLAG_NO_CLEAR;
contentView
.setImageViewResource(R.id.imageOfflineshowCompletion, R.drawable.icon);
contentView.setTextViewText(R.id.textView1offlineshowCompletion, showname "t" statusDownload);
//For click event
Intent intentOpenOfflineshows = new Intent(this,
com.iw.sotc.show.offline.ViewOfflineShows.class);
contentIntent = PendingIntent.getActivity(this, 2,
intentOpenOfflineshows, 0);
notification.flags |= Notification.FLAG_AUTO_CANCEL
| Notification.FLAG_SHOW_LIGHTS;
notification.contentIntent = contentIntent;
notification.contentView = contentView;
notificationManager.notify(1, notification);
}
private void showNotification() {
notificationManager = (NotificationManager) this
.getSystemService(Context.NOTIFICATION_SERVICE);
notification = new Notification(R.drawable.sotc_notification_icon, "",
System.currentTimeMillis());
contentView = new RemoteViews(getPackageName(),
R.layout.upload_progress_bar);
notification.flags |= Notification.FLAG_NO_CLEAR;
contentView
.setImageViewResource(R.id.imageOfflineshow, R.drawable.icon);
contentView.setTextViewText(R.id.textView1, showname);
contentView.setProgressBar(R.id.progressBar1, 100, 0, false);
notification.contentIntent = contentIntent;
notification.contentView = contentView;
notificationManager.notify(1, notification);
/*
* notificationManager = (NotificationManager) this
* .getSystemService(Context.NOTIFICATION_SERVICE); notification = new
* Notification( R.drawable.sotc_notification_icon, "", System
* .currentTimeMillis()); notification.flags = notification.flags |
* Notification.FLAG_ONGOING_EVENT; notification.flags|=
* Notification.FLAG_NO_CLEAR; notification.contentView = new
* RemoteViews( getApplicationContext().getPackageName(),
* R.layout.upload_progress_bar); notification.icon =
* R.drawable.sotc_notification_icon;
* notification.contentView.setTextViewText(R.id.textView1, showname);
* notification.contentIntent = contentIntent;
* notification.contentView.setProgressBar(R.id.progressBar1, 100, 0,
* false); notificationManager.notify(1, notification);
* startForeground(1, notification);
*/
}
private void downloadSetofAssets(int OFFSET, int LIMIT, String url) {
if (Constants.DEBUG)
Log.d(TAG, "Offline step 8 " "downloadSetofAssets");
if (Constants.DEBUG)
try {
url = url.replace("value1",
URLEncoder.encode("" OFFSET, "UTF-8"));
url = url.replace("value2",
URLEncoder.encode("" LIMIT, "UTF-8"));
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
}
if (Constants.DEBUG)
Log.i(TAG, "Show offline -- Asset URL: " url);
showAssetList = DownloadAssets.hit(getApplicationContext(), url);
for (ConcurrentHashMap<String, String> asset : showAssetList) {
String thumbUrl = asset.get("thumb_url");
// String normalUrl = asset.get("normal_url");
// added by Karthikeyan v
// To avoid downloading png file for document type files
// here just used the variable name as normalUrl for testing purpose
// // do not confuse
String largeUrl = asset.get("large_url");
String normalUrl = asset.get("normal_url");
String mp4Url = asset.get("mp4_url");
String fileType = asset.get("filetype");
String assetID = asset.get("id");
String assetType = asset.get("asset_type");
if (Constants.DEBUG)
Log.d(TAG, "Thumb Url :" thumbUrl);
if (Constants.DEBUG)
Log.d(TAG, "Normal Url :" normalUrl);
if (Constants.DEBUG)
Log.d(TAG, "Asset ID : " assetID);
if (Constants.DEBUG)
Log.d(TAG, "Asset Type : " assetType);
if (Constants.DEBUG)
Log.d(TAG, "MP4 Url : " mp4Url);
if (Constants.DEBUG)
Log.d(TAG, "FileType : " fileType);
if (assetType.equals("1")) { // Image
File assetDirectory = createAssetDirectory(showId, showname,
data, assetID, assetType);
if (assetDirectory != null) {
File thumb = new File(assetDirectory.getAbsolutePath(),
"/Thumb");
thumb.mkdirs();
// Thumbnail
File thumbFile = new File(thumb.getAbsolutePath(),
"/Thumb." getExtention(thumbUrl));
if (Constants.DEBUG)
Log.d(TAG,
"Thumb File ath : "
thumbFile.getAbsolutePath());
doInBackground(this, thumbUrl,
thumbFile.getAbsolutePath(), messenger);
File normal = new File(assetDirectory.getAbsolutePath(),
"/Normal");
normal.mkdirs();
// Normal
File normalFile = new File(normal.getAbsolutePath(),
"/Normal." getExtention(normalUrl));
if (Constants.DEBUG)
Log.i("NormalFilepath", normalFile.getAbsolutePath());
if (Constants.DEBUG)
Log.d(TAG,
"Normal File path: "
normalFile.getAbsolutePath());
doInBackground(this, normalUrl,
normalFile.getAbsolutePath(), messenger);
if (Constants.DEBUG)
Log.i("DownloadServicestatus", "DownloadComplete");
}
} else if (assetType.equals("2")) { // Video
File assetDirectory = createAssetDirectory(showId, showname,
data, assetID, assetType);
if (assetDirectory != null) {
if (!fileType.equals("Youtube")) { // via AddLink
File thumb = new File(assetDirectory.getAbsolutePath(),
"/Thumb");
thumb.mkdirs();
// Thumbnail
File thumbFile = new File(thumb.getAbsolutePath(),
"/Thumb." getExtention(thumbUrl));
if (Constants.DEBUG)
Log.d(TAG,
"Thumb File ath : "
thumbFile.getAbsolutePath());
doInBackground(this, thumbUrl,
thumbFile.getAbsolutePath(), messenger);
File mp4url = new File(
assetDirectory.getAbsolutePath(), "/Normal");
mp4url.mkdirs();
// mp4_Url
File mp4File = new File(mp4url.getAbsolutePath(),
"/Normal." getExtention(mp4Url));
if (Constants.DEBUG)
Log.d(TAG,
"Normal File path: "
mp4File.getAbsolutePath());
doInBackground(this, mp4Url,
mp4File.getAbsolutePath(), messenger);
if (Constants.DEBUG)
Log.i("DownloadServicestatus", "DownloadComplete");
} else if (Constants.DEBUG)
Log.d(TAG,
"Asset type is video but is Youtube link. So not proceeding for offline");
}
} else if (assetType.equals("3")) { // Audio
File assetDirectory = createAssetDirectory(showId, showname,
data, assetID, assetType);
if (assetDirectory != null) {
File thumb = new File(assetDirectory.getAbsolutePath(),
"/Thumb");
thumb.mkdirs();
// Thumbnail
File thumbFile = new File(thumb.getAbsolutePath(),
"/Thumb." getExtention(thumbUrl));
if (Constants.DEBUG)
Log.d(TAG,
"Thumb File ath : "
thumbFile.getAbsolutePath());
doInBackground(this, thumbUrl,
thumbFile.getAbsolutePath(), messenger);
File normal = new File(assetDirectory.getAbsolutePath(),
"/Normal");
normal.mkdirs();
// Normal
File normalFile = new File(normal.getAbsolutePath(),
"/Normal." getExtention(normalUrl));
if (Constants.DEBUG)
Log.d(TAG,
"Normal File path: "
normalFile.getAbsolutePath());
doInBackground(this, normalUrl,
normalFile.getAbsolutePath(), messenger);
if (Constants.DEBUG)
Log.i("DownloadServicestatus", "DownloadComplete");
}
} else {
if (!assetType.equals("5")) {
File assetDirectory = createAssetDirectory(showId,
showname, data, assetID, assetType);
if (assetDirectory != null) {
File thumb = new File(assetDirectory.getAbsolutePath(),
"/Thumb");
thumb.mkdirs();
// Thumbnail
File thumbFile = new File(thumb.getAbsolutePath(),
"/Thumb." getExtention(thumbUrl));
if (Constants.DEBUG)
Log.d(TAG,
"Thumb File ath : "
thumbFile.getAbsolutePath());
doInBackground(this, thumbUrl,
thumbFile.getAbsolutePath(), messenger);
File normal = new File(
assetDirectory.getAbsolutePath(), "/Normal");
normal.mkdirs();
// Normal
File normalFile = new File(normal.getAbsolutePath(),
"/Normal." getExtention(largeUrl));
if (Constants.DEBUG)
Log.i("Normal File path: ",
normalFile.getAbsolutePath());
doInBackground(this, largeUrl,
normalFile.getAbsolutePath(), messenger);
if (Constants.DEBUG)
Log.i("DownloadServicestatus", "DownloadComplete");
} else // "5" Link
{
if (Constants.DEBUG)
Log.d(TAG, "This is Web Link");
}
}
}
}
}
private String getLoginFolders() {
// TODO Auto-generated method stub
File file = null;
int status = Constants.getSDCardStatus();
if (status == Constants.MOUNTED) {
File f = new File(
Environment
.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS),
"/SOTC_OFF/.nomedia");
f.mkdirs();
file = new File(
Environment
.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS),
"/SOTC_OFF/" sotcPref.getString("domain", "") "/"
sotcPref.getString("user_id", ""));
file.mkdirs();
}
return file.getAbsolutePath();
}
private File createAssetDirectory(String showid, String showname,
String data, String assetID, String assetType) {
// TODO Auto-generated method stub
if (Constants.DEBUG)
Log.d(TAG, "Offline step 10 " "createAssetDirectory");
File file = null;
int status = Constants.getSDCardStatus();
if (status == Constants.MOUNTED) {
if (DownloadAssets.TOTAL_ASSET_COUNT != 0) {
/**
* From to concept here is to avoid duplication of new offline
* shows when show is updated. So, we are here renaming previous
* offline show's folder name with updated asset count.
*/
boolean isRenameSuccess = false;
File f = new File(getLoginFolders());
if (!f.exists())
f.mkdirs();
File[] fileArray = f.listFiles();
File f2 = new File(getLoginFolders(), "/" showid.trim() ","
showname.trim() "," data);
for (File from : fileArray) {
String s1 = from.getName().substring(0,
from.getName().lastIndexOf(","));
if (Constants.DEBUG)
Log.i(TAG, "s1: " s1);
if (f2.getName().equalsIgnoreCase(s1)) {
// Rename
File to = new File(getLoginFolders(), "/"
showid.trim() "," showname.trim() ","
data "," noofFiles);
if (Constants.DEBUG)
Log.i(TAG, "from existence: " from.exists());
try {
isRenameSuccess = from.renameTo(to);
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
if (Constants.DEBUG)
Log.i(TAG, "isRenameSuccess: " isRenameSuccess);
break;
}
}
file = new File(getLoginFolders(), "/" showid.trim() ","
showname.trim() "," data "," noofFiles
"/File_" assetID "," assetType.trim());
}
if (file != null)
if (!file.exists())
file.mkdirs();
}
return file;
}
public static String getExtention(String url) {
String extension = MimeTypeMap.getFileExtensionFromUrl(url);
return extension;
}
boolean doInBackground(Context context, String urlPath,
String destinationPath, Messenger messenger) {
final String desti = destinationPath;
final String url = urlPath;
final Messenger messengerCopy = messenger;
final Context cntxt = context;
/*
* new Thread(new Runnable() {
*
* @Override public void run() {
*/
if (Constants.DEBUG)
Log.d(TAG, "Offline step 9 " "doInBackground");
// boolean isDownloaded = false;
int lastPercent = 0;
File destination = new File(desti);
if (Constants.DEBUG)
Log.i("DestinationFile", destination.getAbsolutePath());
if (!destination.exists()) {
if (chkConnectionStatus()) {
InputStream stream = null;
FileOutputStream fos = null;
try {
URL imageUrl = new URL(url);
HttpURLConnection conn = (HttpURLConnection) imageUrl
.openConnection();
conn.setConnectTimeout(30000);
conn.setReadTimeout(30000);
conn.setInstanceFollowRedirects(true);
stream = conn.getInputStream();
int contentLength = conn.getContentLength();
if (Constants.DEBUG)
Log.i(TAG, "contentLength : " contentLength);
if (contentLength == 0) {
result = DownloadService.NO_FILE;
destination.delete();
Toast.makeText(getApplicationContext(),
getResources().getString(R.string.Text_NoFile),
1000).show();
} else if (contentLength > availablestorageOnExternalDir()) {
// No Space Available
result = DownloadService.LOW_SPACE;
destination.delete();
Toast.makeText(
getApplicationContext(),
getResources().getString(
R.string.Text_NoSpaceShow), 1000)
.show();
} else {
fos = new FileOutputStream(destination.getPath());
long total = 0l;
final int buffer_size = 4 * 1024;
try {
byte[] bytes = new byte[buffer_size];
for (;;) {
int count = stream.read(bytes, 0, buffer_size);
if (count == -1)
break;
fos.write(bytes, 0, count);
total = count;
int percent = (int) ((total * 100) / contentLength);
if (percent > lastPercent) {
if (Constants.DEBUG)
Log.i("Percent", "" percent);
contentView.setProgressBar(
R.id.progressBar1, 100, percent,
false);
notification.contentView = contentView;
lastPercent = percent;
if (Constants.DEBUG)
Log.i("DownloadingPercent", ""
percent);
}
}
if (destination.length() < contentLength) {
result = DownloadService.PARTIALLY_DOWNLOADED;
destination.delete();
} else {
if (Constants.DEBUG)
Log.e(TAG,
"Sucessful downloaded-------------------------------------------------"
downloadCount );
// Sucessful finished
if (Constants.DEBUG)
Log.e(TAG,
"Sucessful downloaded-------------------------------------------------"
downloadCount);
result = Activity.RESULT_OK;
}
} catch (Exception ex) {
}
// To track the offline event
JSONObject properties = new JSONObject();
try {
properties.put("User Name",
myPrefs.getString("email_id", null));
properties.put("MAIL",
myPrefs.getString("email_id", null));
} catch (JSONException e) {
}
mMixpanel.identify(myPrefs.getString("email_id", null));
mMixpanel.getPeople().set(properties);
mMixpanel.track("mA_Show Offline End", properties);
}
conn.disconnect();
Message msg = Message.obtain();
msg.arg1 = resu<
msg.obj = destination.getAbsolutePath();
try {
messengerCopy.send(msg);
} catch (android.os.RemoteException e1) {
if (Constants.DEBUG)
Log.w(getClass().getName(),
"Exception sending message", e1);
}
if (Constants.DEBUG)
Log.v(TAG, "Completed.............. ");
} catch (Exception e) {
e.printStackTrace();
}
finally {
if (stream != null) {
try {
stream.close();
} catch (IOException e) {
e.printStackTrace();
}
}
if (fos != null) {
try {
fos.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
} else {
// / no network connection
result = DownloadService.NETWORK_PROBLEM;
notification.setLatestEventInfo(cntxt,
"Please check your network connection", "",
contentIntent);
notification.flags |= Notification.FLAG_NO_CLEAR;
notification.flags |= Notification.FLAG_AUTO_CANCEL;
notificationManager.notify(1, notification);
Message msg = Message.obtain();
msg.arg1 = resu<
msg.obj = destination.getAbsolutePath();
try {
messengerCopy.send(msg);
} catch (android.os.RemoteException e1) {
if (Constants.DEBUG)
Log.w(getClass().getName(),
"Exception sending message", e1);
}
}
} else {
result = DownloadService.ASSERT_EXISIT;
Message msg = Message.obtain();
msg.arg1 = resu<
msg.obj = destination.getAbsolutePath();
try {
messengerCopy.send(msg);
} catch (android.os.RemoteException e1) {
if (Constants.DEBUG)
Log.w(getClass().getName(), "Exception sending message", e1);
}
}
/*
* }
*
* }).start();
*/
return true;
}
public long availablestorageOnExternalDir() // Get Available space(in Bytes)
{
StatFs stat = new StatFs(Environment.getExternalStorageDirectory()
.getPath());
long bytesAvailable = (long) stat.getBlockSize()
* (long) stat.getAvailableBlocks();
long megAvailable = bytesAvailable / (1024 * 1024);
if (Constants.DEBUG)
Log.e("", "Available MB : " megAvailable);
if (Constants.DEBUG)
Log.e("", "Available Bytes : " bytesAvailable);
return bytesAvailable;
}
public boolean chkConnectionStatus() {
final android.net.NetworkInfo wifi = connMgr
.getNetworkInfo(ConnectivityManager.TYPE_WIFI);
final android.net.NetworkInfo mobile = connMgr
.getNetworkInfo(ConnectivityManager.TYPE_MOBILE);
if (wifi.isAvailable()) {
if (wifi.isConnected())
return true;
return false;
} else if (mobile.isAvailable()) {
if (mobile.isConnected())
return true;
return false;
} else
return false;
}
}
Мои запросы: 1.Is что-нибудь нужно дополнительно проверить? 2.Is структура папок отличается на многих устройствах Android? 3. Если устройства Android имеют разную структуру папок или параметры хранения (внутренние или внешние), как я могу ожидать?
Комментарии:
1. Вы могли бы сначала объяснить, почему вы хотите загружать в общедоступный каталог загрузки вместо каталога внутренних или внешних файлов приложений. И да, структура папок может сильно отличаться на разных устройствах Android. Как все решить, зависит от ответа, который вы даете на мой первый вопрос. Кстати:
getLoginFolders()выдаст исключение NullPointerException, если статус не УСТАНОВЛЕН.2. @greenapps Я просто следую коду моего старшего.
3. Ну, тогда спросите его и скажите мне ;-).