How to remove account in AccountManager in Android

Question

I am trying to remove a custom account in AccountManager.

This is my code :

final Handler handler = new Handler (); 

AccountManagerCallback<Boolean> callback = new AccountManagerCallback<Boolean>()
        {
            @Override
            public void run(AccountManagerFuture<Boolean> arg0)
            {
                String test = "test";
            }
        };

AccountManagerFuture<Boolean> bool = am.removeAccount(account, callback, handler);

Permissions I'm using :

<uses-permission android:name="android.permission.INTERNET"></uses-permission>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"></uses-permission>
<uses-permission android:name="android.permission.MANAGE_ACCOUNTS"></uses-permission> 
<uses-permission android:name="android.permission.GET_ACCOUNTS"></uses-permission> 
<uses-permission android:name="android.permission.AUTHENTICATE_ACCOUNTS"></uses-permission>
<uses-permission android:name="android.permission.WRITE_SYNC_SETTINGS"></uses-permission>

The account is never removed and the callback never called, any idea ? No trace in logs

Solution 1

Try this it will work

    // Global Variables 
    public static final String AUTHORITY = "com.example.package";
    public static final String ACCOUNT_TYPE = "com.example.package";
    public static final String ACCOUNT = "my_custom_account_name";

    // Account Manager definition
    AccountManager accountManager = (AccountManager) this.getSystemService(ACCOUNT_SERVICE);

    // loop through all accounts to remove them
    Account[] accounts = accountManager.getAccounts();
    for (int index = 0; index < accounts.length; index++) {
    if (accounts[index].type.intern() == AUTHORITY)
        accountManager.removeAccount(accounts[index], null, null);
    }

requires

<uses-permission android:name="android.permission.WRITE_SYNC_SETTINGS" />

Solution 2

You need to override the following method in the Authenticator class from AbstractAccountAuthenticator.

public Bundle getAccountRemovalAllowed(AccountAuthenticatorResponse response, Account account) {
    Bundle result = new Bundle();
    boolean allowed = true; // or whatever logic you want here
    result.putBoolean(AccountManager.KEY_BOOLEAN_RESULT, allowed);
    return result;
}

Solution 3

Had the same problem

if (VERSION.SDK_INT < VERSION_CODES.LOLLIPOP_MR1) {
            accountManager.removeAccount(account, {}, AContext.app.mainHandler)
        } else {
            accountManager.removeAccountExplicitly(account)
        }

For API 22 and higher works perfectly, but on API 19 didn't work at all.

Finally found the problem in my implementation of AbstractAccountAuthenticator:

override fun getAccountRemovalAllowed(response: AccountAuthenticatorResponse?, account: Account?): Bundle {
    AccountHelper.removeAccount()
    return super.getAccountRemovalAllowed(response, account)
}

It became to work after deleting "AccountHelper.removeAccount()"

I don't know - maybe it'll help

Solution 4

You have to call 2 below methods before removeAccount method and the system will allow you to remove the account in account manager. clearPassword invalidateAuthToken

Based on the description on the removeAccount method:

"The authenticator may have its own policies preventing account deletion, in which case the account will not be deleted."

Have fun.

View more solutions

Comments

[Vico]

Thanks but it doesn't work. You're basically doing the same thing as me. The removeAccount() function doesn't do anything (and return nothing btw).

[DjHacktorReborn]

@user2083698 you might be doing something wrong its works perfect in my app

[DjHacktorReborn]

@user2083698 make sure you have above permission and your authority matches in if

[Vico]

Adding this permission does not change anything. I posted all enabled permission on the first post. And removing account from android's settings doesn't work neither.

[Vico]

Is it possible for you to show me a sample project which creates and removes an account ?

[DjHacktorReborn]

try Account[] accounts = accountManager.getAccounts(); for (int index = 0; index < accounts.length; index++) {}

[Vico]

Account is actually found but when I call the removeAccount() function on this account nothing happens.

[Shirish Herwade]

You are wrong, doesn't need WRITE_SYNC_SETTINGS for above code, instead of need 'GET_ACCOUNTS' and 'MANAGE_ACCOUNTS' permission. Plz correct me if I'm wrong.

[AZ_]

@DjHacktorReborn TableConstants.AUTHORITY ?? what is that String

[DjHacktorReborn]

@AZ_ its the unique identifier needed for content uri

[AZ_]

@DjHacktorReborn Your code is working man. Only we have to allow removal in Authenticator class. +1

[Nitish]

@DjHacktorReborn For adding or removing accounts, our app needs to hold android.permission.MANAGE_ACCOUNTS. See [(developer.android.com/reference/android/accounts/…, android.accounts.AccountManagerCallback<java.lang.Boolean>, android.os.Handler))]

[Brandon]

@DjHacktorReborn -- I updated your code to make it clearer. But thank you for posting it, it really helped me out (just needed some clarification which I added in the edit).

[a.t.]

Could you elaborate on how to override the method in the Authenticator class from AbstractAccountAuthenticator? From what I understand from your answer, assuming Vico's code is in some method named public void removing(){}, one would first have to call the class AbstractAccountAuthenticator from somewhere, and then in that class in Vico's method removing one should paste your method getAccountRemovalAllowed with the text @Override above it. But I am having a bit diffuculty understanding how you could reach class AbstractAccountAuthenticator from Vicos method removing`.