How to get the default gmail username and password [closed]

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Now I am doing a android project. The project needs to get the default username and password of Android phone.

I don't know how to get the default gmail information of one Android Cell Phone. Can u help me. Thanks.

回答1:

You should read about AccountManager to login using the gmail user but you will not get the username and password.

回答2:

Pattern emailPattern = Patterns.EMAIL_ADDRESS; // API level 8+
Account[] accounts = AccountManager.get(context).getAccounts();
for (Account account : accounts) {
    if (emailPattern.matcher(account.name).matches()) {
        String possibleEmail = account.name;
        ...
    }
}

Note that this requires the GET_ACCOUNTS permission:

来源：https://stackoverflow.com/questions/2817581/how-to-get-the-default-gmail-username-and-password