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trying to customize hotspot SSID but stuck at WifiConfiguration

I'm trying to make an app on android studio that can customize the user's hotspot name (SSID), but found that WifiConfiguration was deprecated. I'm not sure about the difference between "NetworkSpecifier" and "WifiNetworkSuggestion", and how to use them to fix this. I'm new to android studio and I couldn't find a similar solution. Can anyone teach me what should I do? Or is it possible to customize it?
`
public void configureHotspot(String name) {
WifiConfiguration apConfig = new WifiConfiguration();
apConfig.SSID = name;
apConfig.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.WPA_PSK);
try {
Method setConfigMethod = mWifiManager.getClass().getMethod("setWifiApConfiguration", WifiConfiguration.class);
boolean status = (boolean) setConfigMethod.invoke(mWifiManager, apConfig);
Log.d(TAG, "setWifiApConfiguration - success? " + status);
} catch (Exception e) {
Log.e(TAG, "Error in configureHotspot");
e.printStackTrace();
}
}
`
This part of the code is from this example: "https://github.com/aegis1980/WifiHotSpot", in "MyOreoWifiManager.java".
(this is the only example I found that can successfully turn on my phone's hotspot.)
I think I could keep the try-and-catch part because "WifiManager" is not deprecated, so maybe the problem is at apConfig only.

Android firebase throws authentication error while trying to access storage

EDIT: I just restarted Android Studio after cleaning the project and invalidating cache. Now I get this error -
E/StorageException: { "error": { "code": 403, "message":
"Permission denied. Could not perform this operation" }}
I'm getting the following error that prints infinitely.
2020-09-27 17:00:32.931 11755-11863/com.example.XXXXXX E/StorageUtil: error getting token java.util.concurrent.ExecutionException: com.google.firebase.internal.api.FirebaseNoSignedInUserException: Please sign in before trying to get a token.
In my app I've created the user properly, and FirebaseAuth.getInstance().getCurrentUser(); does NOT return null. But if it does, I handle it by logging them in successfully or creating another user. My app now has 160+ users created, in less than half a day. I don't think I've even run the app that many times for testing. 'Sign in with email', and 'anonymous sign in' options are enabled in auth settings.
The problem starts when I try to access the storage. I get the above mentioned auth token error. The folder and file exist and this is how I'm trying to download the files -
fstore.child("gs://XXXXXX-XXXX.appspot.com/Books/XXXX").listAll().addOnSuccessListener(new OnSuccessListener<ListResult>() {
#Override
public void onSuccess(ListResult listResult) {
for(StorageReference sref : listResult.getItems())
{
tempFilename = sref.getName();
File tmpFile = new File(tempSubDir, tempFilename);
try {
tmpFile.createNewFile();
sref.getFile(tmpFile).addOnFailureListener(new OnFailureListener() {
#Override
public void onFailure(#NonNull Exception e) {
Toast.makeText(tabtwoactivity.this, "File download failed!", Toast.LENGTH_LONG).show();
System.out.println("ERROR: "+ e.toString());
}
});
} catch (IOException e) {
e.printStackTrace();
}
//System.out.println("IIIIII: "+sref.getName());
}
}
}).addOnFailureListener(new OnFailureListener() {
#Override
public void onFailure(#NonNull Exception e) {
Toast.makeText(tabtwoactivity.this, "Fetching Directory XXXXX Failed", Toast.LENGTH_LONG).show();
}
});
I've tried using fstore.child("XXXX").listAll() but that gave me an avalanche of different errors, mainly focused around Folder not found. My storage has the folder and files. I've even played around with the storage rules - allow read, write;, allow read, write: if request.auth!=null, allow read, write: if request.auth==null. But nothing worked.
What am I doing wrong?

Paste this in your google.json:
service firebase.storage {
// The {bucket} wildcard indicates we match files in all storage buckets
match /b/{bucket}/o {
// Match filename
match /filename {
allow read: if true;
allow write: if true;
}
}
}

Google Play Install Referrer Library - Referrer Generation

I'm developing an android application in Java where I need to pass the referer information to an URL. I'm getting the referrer information using Play Install Referrer Library.
Here is my code:
InstallReferrerClient referrerClient = InstallReferrerClient.newBuilder(this).build();
referrerClient.startConnection(new InstallReferrerStateListener() {
#Override
public void onInstallReferrerSetupFinished(int responseCode) {
switch (responseCode) {
case InstallReferrerClient.InstallReferrerResponse.OK:
try {
Log.v("TAG", "InstallReferrer conneceted");
ReferrerDetails response = referrerClient.getInstallReferrer();
System.out.println("referrerUrl ID: " + response);
referrerClient.endConnection();
} catch (RemoteException e) {
e.printStackTrace();
}
break;
case InstallReferrerClient.InstallReferrerResponse.FEATURE_NOT_SUPPORTED:
Log.w("TAG", "InstallReferrer not supported");
break;
case InstallReferrerClient.InstallReferrerResponse.SERVICE_UNAVAILABLE:
Log.w("TAG", "Unable to connect to the service");
break;
default:
Log.w("TAG", "responseCode not found.");
}
}
#Override
public void onInstallReferrerServiceDisconnected() {
// Try to restart the connection on the next request to
// Google Play by calling the startConnection() method.
}
});
Code is working fine and currently, the above snippet is inside my activity's onCreate method. which means it will start the new connection every time the user opens the activity.
In the library documentation, they have written that
Caution: The install referrer information will be available for 90
days and won't change unless the application is reinstalled. To avoid
unnecessary API calls in your app, you should invoke the API only once
during the first execution after install.
This is where I'm stuck, should I just call this thing when the application starts the first time?
If yes, I can store this referrer in the shared preference, but then how will I able to know that 90 days have been passed and I need to trigger that action again? Or it there something else that should I need to implement? Kindly help me with this issue.

Issues with converting java to c#

I'm attempting to convert the code located at How to use signalr in android Service from java to c# and have been making some progress. I'm now stuck at the final method. The java code is:
private void startSignalR() {
Platform.loadPlatformComponent(new AndroidPlatformComponent());
mInstance.setmHubConnection();
mInstance.setHubProxy();
ClientTransport clientTransport = new ServerSentEventsTransport(mInstance.mHubConnection.getLogger());
SignalRFuture<Void> signalRFuture = mInstance.mHubConnection.start(clientTransport);
try {
signalRFuture.get();
} catch (InterruptedException | ExecutionException e) {
Log.e("SimpleSignalR", e.toString());
return;
}
mInstance.sendMessage(MainActivity.unm,"Hello All!");
String CLIENT_METHOD_BROADAST_MESSAGE = "recievedMessage";
mInstance.mHubProxy.on(CLIENT_METHOD_BROADAST_MESSAGE,
new SubscriptionHandler2<String,LoginInfo>() {
#Override
public void run(final String msg,final LoginInfo loginInfo) {
final String finalMsg = loginInfo.FullName + " says " + loginInfo.Password;
Intent intent = new Intent();
intent.setAction(MY_ACTION);
intent.putExtra("DATAPASSED", finalMsg);
sendBroadcast(intent);
}
}
, String.class,LoginInfo.class);
}
Using a java to c# converter, this translated to:
private void startSignalR()
{
Platform.loadPlatformComponent(new AndroidPlatformComponent());
mInstance.setmHubConnection();
mInstance.setHubProxy();
ClientTransport clientTransport = new ServerSentEventsTransport(mInstance.mHubConnection.Logger);
SignalRFuture<Void> signalRFuture = mInstance.mHubConnection.Start(clientTransport);
try
{
signalRFuture.get();
}
catch (Exception e) when (e is InterruptedException || e is ExecutionException)
{
// Log.e("SimpleSignalR", e.ToString());
return;
}
mInstance.sendMessage("", "Hello All!");
string CLIENT_METHOD_BROADAST_MESSAGE = "recievedMessage";
//String CLIENT_METHOD_BROADAST_MESSAGE = "messageReceived";
mInstance.mHubProxy.on(CLIENT_METHOD_BROADAST_MESSAGE, new SubscriptionHandler2AnonymousInnerClass(this)
, typeof(string), typeof(LoginInfo));
}
private class SubscriptionHandler2AnonymousInnerClass : SubscriptionHandler2<string, LoginInfo>
{
private readonly SignalRSrv outerInstance;
public SubscriptionHandler2AnonymousInnerClass(SignalRSrv outerInstance)
{
this.outerInstance = outerInstance;
}
//JAVA TO C# CONVERTER WARNING: 'final' parameters are not available in .NET:
//ORIGINAL LINE: #Override public void run(final String msg,final LoginInfo loginInfo)
public override void run(string msg, LoginInfo loginInfo)
{
//JAVA TO C# CONVERTER WARNING: The original Java variable was marked 'final':
//ORIGINAL LINE: final String finalMsg = loginInfo.FullName + " says " + loginInfo.Password;
string finalMsg = loginInfo.FullName + " says " + loginInfo.Password;
Intent intent = new Intent();
intent.Action = MY_ACTION;
intent.PutExtra("DATAPASSED", finalMsg);
sendBroadcast(intent);
}
}
This, of course, generated several errors in Visual Studio 2017.
First, the line Platform.loadPlatformComponent(new AndroidPlatformComponent()); generated the error Platform is inaccessible due to its protection level. Platform in Xamarin for Visual Studio 2017 is indeed protected and is a internal class in System and I cannot change this, so I'm at a loss as how to proceed with it. The same line generates the error The type or namespace name 'AndroidPlatformComponent' could not be found, these errors a numerous and not unexpected I just can't find an equivalent to AndroidPlatformComponent in Visual Studio 2017 so I'm at a loss as how to solve this one.
Next, on this line ClientTransport clientTransport = new ServerSentEventsTransport(mInstance.mHubConnection.Logger); generates the error The type or namespace name 'ClientTransport' could not be found, I was also unable to find an equivalent to this and again I'm at a loss as to proceed. Also on this line, .Logger is not defined for the hub connection, apparently it's .getLogger() in java, I was unable to find an equivalent for this one as well.
Next the line SignalRFuture<Void> signalRFuture = mInstance.mHubConnection.Start(clientTransport);' generates the error 1The type or namespace name 'SignalRFuture<>' could not be found, this seemes to be specific to SignalR, again, I am unable to find an equivalent.
The next one has me totally stumped, the line private class SubscriptionHandler2AnonymousInnerClass : SubscriptionHandler2<string, LoginInfo> generates the error The type or namespace name 'SubscriptionHandler2<,>' could not be found. I've looked everywhere online and read up on AnonymousInnerClass, but it was not help with this.
I'm hoping that the users here are more familiar with SignalR and the differences between c# functionality and java functionality. I'm not at all familiar with java nor am I familiar with SignalR and foreground services.

As it turns out, the last method in the java code I was converting was wiring up an event to pass the message received from the hub to the activity. In c# / Visual Studio (2017), that's done very differently which is why I didn't understand/recognize what was going on. So I created a handler in C# and execute a popup message for the message. This in itself may pose problems, but at least I know what's going on. This is the code I wrote to start SignalR from within the service and WireUp the handler:
private void startSignalR()
{
// Company, Department, and section are private variables
// their values are pulled from the intent bundle
// in the OnBind method, that code is:
// Bundle bundlee = intent.GetBundleExtra("TheBundle");
// MyUser = bundlee.GetParcelable("MyUser") as User;
// This information is put into the bundle when the user is logged in.
// I then pass that information to the SignalR client
// when I set the hub connection and placed on the querystring to the hub.
mInstance.setmHubConnection(username, firstname,lastname,company,department,section);
mInstance.setHubProxy();
try
{
// Connect the client to the hup
mInstance.mHubConnection.Start();
// Set the event handler
mInstance.WireUp();
}
catch (System.Exception e) when (e is InterruptedException || e is ExecutionException)
{
ShowMessage("Error: + e.Message)
}
}
This is the WireUp code, this is a method in the client code:
public void WireUp()
{
// set the event handler
mHubProxy.On("broadcastMessage", (string platform, string message) =>
{
if (OnMessageReceived != null)
OnMessageReceived(this, string.Format("{0}: {1}", platform, message));
});
}
As I had anticipated, the popup message won't appear when the app is in the background, so I'm researching a workaround

Google Drive for Android SDK Doesn't List Files

I've got a really odd problem with the Google Drive Android SDK. I've been using it for several months now, and until last week it performed perfectly. However, there is now a really odd error, which doesn't occur all the time but does 9 out of 10 times.
I'm trying to list the user's files and folders stored in a particular Google Drive folder. When I'm trying to use the method Drive.files().list().execute(), 9 out of 10 times literally nothing happens. The method just hangs, and even if I leave it for an hour, it just remains doing... nothing.
The code I'm using is below - all of this being run within the doInBackground of an AsyncTask. I've checked credentials - they are all fine, as is the app's certificate's SHA1 hash. No exceptions are thrown. Google searches have yielded nothing. Here is the particular bit of code that's bothering me:
try {
GoogleAccountCredential credential = GoogleAccountCredential.usingOAuth2(
SettingsActivity.this, Arrays.asList(DriveScopes.DRIVE));
if (googleAccountName != null && googleAccountName.length() > 0) {
credential.setSelectedAccountName(googleAccountName);
Drive service = new Drive.Builder(AndroidHttp.newCompatibleTransport(),
new GsonFactory(), credential).build();
service.files().list().execute(); // Google Drive fails here
} else {
// ...
}
} catch (final UserRecoverableAuthIOException e) {
// Authorisation Needed
runOnUiThread(new Runnable() {
#Override
public void run() {
try {
startActivityForResult(e.getIntent(), REQUEST_AUTHORISE_GDRIVE);
} catch (Exception e) {
Log.e("SettingsActivity: Google Drive", "Unable to add Google Drive account due to Exception after trying to show the Google Drive authroise request intent, as the UserRecoverableIOException was originally thrown. Error message:\n" + e.getMessage());
}
}
});
Log.d("SettingsActivity: Google Drive", "UserRecoverableAuthIOException when trying to add Google Drive account. This is normal if this is the first time the user has tried to use Google Drive. Error message:\n" + e.getMessage());
return;
} catch (Exception e) {
Log.e("SettingsActivity: Google Drive", "Unable to add Google Drive account. Error message:\n" + e.getMessage());
return;
}
I'm using Drive API v2. Thanks everyone!
Edit
Having played around a bit more, it turns out this isn't for just listing files. Trying to interact with any file on Google Drive behaves the same way - deleting, downloading, creating... Anything! I have also noticed that putting the device in aeroplane mode so it has not internet access makes no difference either: Google Drive doesn't throw an exception, or even return, it just freezes the thread it's on.
I've updated to the very latest Drive API lib but that hasn't helped. I remembered that the error happened soon after I added the JSch SSH library to the project, so I removed that, but it made no difference. Removing and re-adding the Drive API v2 has made no difference either, and nor has cleaning the project.
Edit 2
I've found something which may be significant. On the Google Developer console, I had some Drive errors recorded as follows:
TOP ERRORS:
Requests % Requests Methods Error codes
18 38.30% drive.files.list 400
14 29.79% drive.files.insert 500
11 23.40% drive.files.update 500
4 8.51% drive.files.get 400
Do you reckon these are the errors? How could I fix them? Thanks

This is my code and it's work
new AsyncTask<Void, Void, List<File>>() {
#Override
protected List<File> doInBackground(Void... params) {
List<File> result = new ArrayList<File>();
try {
com.google.api.services.drive.Drive.Files.List list = service.files().list();
list.setQ("'" + sourcePath + "' in parents");
FileList fileList = list.execute();
result = fileList.getItems();
if(result != null) {
return result;
}
} catch (UserRecoverableAuthIOException e) {
startActivityForResult(e.getIntent(), REQUEST_AUTHORIZATION);
} catch (IOException e) {
e.printStackTrace();
}
return null;
}
protected void onPostExecute(List<File> result) {
//This is List file from Google Drive
};
}.execute();

I've come up with a solution which does work, and thought I'd post it so others could see it if they happen to come across the problem.
Luckily, I had backed up all of the previous versions of the app. So I restored the whole project to how it was two weeks ago, copied and pasted all changes from the newer version which had been made since then, and it worked. I don't see why this should work, since the end result is the same project, but it does!

Google Drive List Files
This might help you.. Try to display it in ListView u will see all fetched folders
public void if_db_updated(Drive service)
{
try {
Files.List request = service.files().list().setQ("mimeType = 'application/vnd.google-apps.folder'");
FileList files = request.execute();
for(File file : files.getItems())
{
String title = file.getTitle();
showToast(title);
}
} catch (UserRecoverableAuthIOException e) {
startActivityForResult(e.getIntent(), REQUEST_AUTHORIZATION);
} catch (IOException e) {
e.printStackTrace();
}
}
public void showToast(final String toast) {
runOnUiThread(new Runnable() {
#Override
public void run() {
Toast.makeText(getApplicationContext(), toast, Toast.LENGTH_SHORT).show();
}
});