Как вы можете получить адрес электронной почты для пользователей Android?

Ответ 1

Почему вы хотите сделать это?

import android.accounts.Account;
import android.accounts.AccountManager;
import android.content.Context;

/**
 * This class uses the AccountManager to get the primary email address of the
 * current user.
 */
public class UserEmailFetcher {

  static String getEmail(Context context) {
    AccountManager accountManager = AccountManager.get(context); 
    Account account = getAccount(accountManager);

    if (account == null) {
      return null;
    } else {
      return account.name;
    }
  }

  private static Account getAccount(AccountManager accountManager) {
    Account[] accounts = accountManager.getAccountsByType("com.google");
    Account account;
    if (accounts.length > 0) {
      account = accounts[0];      
    } else {
      account = null;
    }
    return account;
  }
}

В вашем файле AnroidManifest.xml

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

Ответ 2

Работа над версией MarshMallow

btn_click = (кнопка) findViewById (R.id.btn_click);

btn_click.setOnClickListener(new View.OnClickListener() {

    @Override
    public void onClick(View arg0)
    {
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M)
        {
            int permissionCheck = ContextCompat.checkSelfPermission(PermissionActivity.this,
                    android.Manifest.permission.CAMERA);
            if (permissionCheck == PackageManager.PERMISSION_GRANTED)
            {
                //showing dialog to select image
                String possibleEmail=null;

                 Pattern emailPattern = Patterns.EMAIL_ADDRESS; // API level 8+
                 Account[] accounts = AccountManager.get(PermissionActivity.this).getAccounts();
                 for (Account account : accounts) {
                     if (emailPattern.matcher(account.name).matches()) {
                         possibleEmail = account.name;
                         Log.e("keshav","possibleEmail"+possibleEmail);
                     }
                 }

                Log.e("keshav","possibleEmail gjhh->"+possibleEmail);
                Log.e("permission", "granted Marshmallow O/S");

            } else {                        ActivityCompat.requestPermissions(PermissionActivity.this,
                        new String[]{android.Manifest.permission.READ_EXTERNAL_STORAGE,
                                android.Manifest.permission.READ_PHONE_STATE,
                                Manifest.permission.GET_ACCOUNTS,
                                android.Manifest.permission.CAMERA}, 1);
            }
        } else {

//Понизьте Зефир

                String possibleEmail=null;

                 Pattern emailPattern = Patterns.EMAIL_ADDRESS; // API level 8+
                 Account[] accounts = AccountManager.get(PermissionActivity.this).getAccounts();
                 for (Account account : accounts) {
                     if (emailPattern.matcher(account.name).matches()) {
                         possibleEmail = account.name;
                         Log.e("keshav","possibleEmail"+possibleEmail);
                 }
                Log.e("keshav","possibleEmail gjhh->"+possibleEmail);
        }
    }
});