如何获取Android设备的主要电子邮件地址

时间：2010-01-21 21:14:40

标签： android email

如何获取Android的主要电子邮件地址（或电子邮件地址列表）？

据我了解，在OS 2.0+上支持多个电子邮件地址，但在2.0以下，每个设备只能有一个电子邮件地址。

12 个答案:

答案 0 :(得分：740)

有几种方法可以做到这一点，如下所示。

作为友好警告，在处理帐户，个人资料和联系人数据时，请小心并提前与用户联系。如果您滥用用户的电子邮件地址或其他个人信息，可能会发生不好的事情。

方法A：使用AccountManager（API级别5 +）

您可以使用AccountManager.getAccounts或AccountManager.getAccountsByType获取设备上所有帐户名称的列表。幸运的是，对于某些帐户类型（包括com.google），帐户名称是电子邮件地址。下面的示例代码段。

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;
        ...
    }
}

请注意，这需要GET_ACCOUNTS权限：

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

可以在SDK中的Contact Manager示例代码中找到有关使用AccountManager的更多信息。

方法B：使用ContactsContract.Profile（API级别14 +）

从Android 4.0（Ice Cream Sandwich）开始，您可以通过访问其个人资料来获取用户的电子邮件地址。访问用户配置文件有点重量级，因为它需要两个权限（更多内容如下），但电子邮件地址是相当敏感的数据，所以这是录取的价格。

以下是使用CursorLoader检索包含电子邮件地址的个人资料数据行的完整示例。

public class ExampleActivity extends Activity implements LoaderManager.LoaderCallbacks<Cursor> {
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        getLoaderManager().initLoader(0, null, this);
    }

    @Override
    public Loader<Cursor> onCreateLoader(int id, Bundle arguments) {
        return new CursorLoader(this,
                // Retrieve data rows for the device user's 'profile' contact.
                Uri.withAppendedPath(
                        ContactsContract.Profile.CONTENT_URI,
                        ContactsContract.Contacts.Data.CONTENT_DIRECTORY),
                ProfileQuery.PROJECTION,

                // Select only email addresses.
                ContactsContract.Contacts.Data.MIMETYPE + " = ?",
                new String[]{ContactsContract.CommonDataKinds.Email.CONTENT_ITEM_TYPE},

                // Show primary email addresses first. Note that there won't be
                // a primary email address if the user hasn't specified one.
                ContactsContract.Contacts.Data.IS_PRIMARY + " DESC");
    }

    @Override
    public void onLoadFinished(Loader<Cursor> cursorLoader, Cursor cursor) {
        List<String> emails = new ArrayList<String>();
        cursor.moveToFirst();
        while (!cursor.isAfterLast()) {
            emails.add(cursor.getString(ProfileQuery.ADDRESS));
            // Potentially filter on ProfileQuery.IS_PRIMARY
            cursor.moveToNext();
        }

        ...
    }

    @Override
    public void onLoaderReset(Loader<Cursor> cursorLoader) {
    }

    private interface ProfileQuery {
        String[] PROJECTION = {
                ContactsContract.CommonDataKinds.Email.ADDRESS,
                ContactsContract.CommonDataKinds.Email.IS_PRIMARY,
        };

        int ADDRESS = 0;
        int IS_PRIMARY = 1;
    }
}

这需要READ_PROFILE和READ_CONTACTS权限：

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

答案 1 :(得分：53)

这可能对其他人有用：

Using AccountPicker to get user's email address没有任何全局权限，并允许用户了解并授权或取消该流程。

答案 2 :(得分：27)

我会使用ICS中引入的Android AccountPicker。 

Intent googlePicker = AccountPicker.newChooseAccountIntent(null, null, new String[]{GoogleAuthUtil.GOOGLE_ACCOUNT_TYPE}, true, null, null, null, null);
startActivityForResult(googlePicker, REQUEST_CODE);

然后等待结果：

protected void onActivityResult(final int requestCode, final int resultCode,
                                final Intent data) {
    if (requestCode == REQUEST_CODE && resultCode == RESULT_OK) {
        String accountName = data.getStringExtra(AccountManager.KEY_ACCOUNT_NAME);
    }
}

答案 3 :(得分：7)

可悲的是，接受的答案无效。

我迟到了，但这是内部Android电子邮件应用程序的解决方案，除非提供商更改了内容uri：

Uri EMAIL_ACCOUNTS_DATABASE_CONTENT_URI = 
              Uri.parse("content://com.android.email.provider/account");

public ArrayList<String> GET_EMAIL_ADDRESSES ()
{
    ArrayList<String> names = new ArrayList<String>();
    ContentResolver cr      = m_context.getContentResolver();
    Cursor cursor           = cr.query(EMAIL_ACCOUNTS_DATABASE_CONTENT_URI ,null, 
                             null, null, null);

    if (cursor == null) {
        Log.e("TEST", "Cannot access email accounts database");
        return null;
    }

    if (cursor.getCount() <= 0) {
        Log.e("TEST", "No accounts");
        return null;
    }

    while (cursor.moveToNext()) {
        names.add(cursor.getString(cursor.getColumnIndex("emailAddress")));
        Log.i("TEST", cursor.getString(cursor.getColumnIndex("emailAddress")));
    }
    return names;
}

答案 4 :(得分：6)

在Android中这是非常棘手的事情，我还没有完成它。但也许这些链接可能对您有所帮助：

答案 5 :(得分：6)

有一个Android API，允许用户选择自己的电子邮件地址，而无需获得许可。看看：https://developers.google.com/identity/smartlock-passwords/android/retrieve-hints 

HintRequest hintRequest = new HintRequest.Builder()
        .setHintPickerConfig(new CredentialPickerConfig.Builder()
                .setShowCancelButton(true)
                .build())
        .setEmailAddressIdentifierSupported(true)
        .setAccountTypes(IdentityProviders.GOOGLE)
        .build();

PendingIntent intent = mCredentialsClient.getHintPickerIntent(hintRequest);
try {
    startIntentSenderForResult(intent.getIntentSender(), RC_HINT, null, 0, 0, 0);
} catch (IntentSender.SendIntentException e) {
    Log.e(TAG, "Could not start hint picker Intent", e);
}

这将显示一个选择器，用户可以在其中选择一个电子邮件地址。结果将在onActivityResult()

中传递

答案 6 :(得分：1)

使用此方法：

 public String getUserEmail() {
    AccountManager manager = AccountManager.get(App.getInstance());
    Account[] accounts = manager.getAccountsByType("com.google");
    List<String> possibleEmails = new LinkedList<>();
    for (Account account : accounts) {
        possibleEmails.add(account.name);
    }
    if (!possibleEmails.isEmpty() && possibleEmails.get(0) != null) {
        return possibleEmails.get(0);
    }
    return "";
}

请注意，这需要GET_ACCOUNTS权限：

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

然后：

editTextEmailAddress.setText(getUserEmail());

答案 7 :(得分：1)

建议的答案将不再起作用，因为从android 8开始施加了新的限制。

此处有更多信息：https://developer.android.com/about/versions/oreo/android-8.0-changes.html#aaad

答案 8 :(得分：0)

使用MarshMallow操作系统 

    btn_click=(Button) 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 {
// Lower then Marshmallow

                    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);


            }
        }
    });

答案 9 :(得分：0)

Android最近锁定GET_ACCOUNTS所以有些答案对我不起作用。我在Android 7.0上使用了这个，但需要注意的是用户必须忍受权限对话。

的AndroidManifest.xml 

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

MainActivity.java 

package com.example.patrick.app2;
import android.content.pm.PackageManager;
import android.support.v4.app.ActivityCompat;
import android.support.v4.content.ContextCompat;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.accounts.AccountManager;
import android.accounts.Account;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.content.*;

public class MainActivity extends AppCompatActivity {

    final static int requestcode = 4; //arbitrary constant less than 2^16

    private static String getEmailId(Context context) {
        AccountManager accountManager = AccountManager.get(context);
        Account[] accounts = accountManager.getAccountsByType("com.google");
        Account account;
        if (accounts.length > 0) {
            account = accounts[0];
        } else {
            return "length is zero";
        }
        return account.name;
    }

    @Override
    public void onRequestPermissionsResult(int requestCode, String permissions[], int[] grantResults) {
        super.onRequestPermissionsResult(requestCode, permissions, grantResults);
        switch (requestCode) {
            case requestcode:
                if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {

                    String emailAddr = getEmailId(getApplicationContext());
                    ShowMessage(emailAddr);

                } else {
                    ShowMessage("Permission Denied");
                }
        }
    }

    public void ShowMessage(String email)
    {
        AlertDialog alertDialog = new AlertDialog.Builder(MainActivity.this).create();
        alertDialog.setTitle("Alert");
        alertDialog.setMessage(email);
        alertDialog.setButton(AlertDialog.BUTTON_NEUTRAL, "OK",
                new DialogInterface.OnClickListener() {
                    public void onClick(DialogInterface dialog, int which) {
                        dialog.dismiss();
                    }
                });
        alertDialog.show();
    }

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        Context context = getApplicationContext();

        if ( ContextCompat.checkSelfPermission( context, android.Manifest.permission.GET_ACCOUNTS )
                != PackageManager.PERMISSION_GRANTED )
        {
            ActivityCompat.requestPermissions( this, new String[]
                            {  android.Manifest.permission.GET_ACCOUNTS  },requestcode );
        }
        else
        {
            String possibleEmail = getEmailId(getApplicationContext());
            ShowMessage(possibleEmail);
        }
    }
}

答案 10 :(得分：0)

在清单中添加这一行（获得许可）

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

然后将此代码粘贴到您的活动中

private ArrayList<String> getPrimaryMailId() {
    ArrayList<String> accountsList = new ArrayList<String>();
    try {
        Account[] accounts = AccountManager.get(this).getAccountsByType("com.google");
        for (Account account : accounts) {
            accountsList.add(account.name);
            Log.e("GetPrimaryMailId ", account.name);
        }
    } catch (Exception e) {
        Log.e("GetPrimaryMailId", " Exception : " + e);
    }
    return accountsList;
}

答案 11 :(得分：0)

适用于 Android 8 及更高版本 -

步骤 1 - 在 AndroidManifest.xml 中添加以下代码 -

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

第 2 步 - 在您的活动中添加以下代码，在运行时请求权限。

if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
            if ((ActivityCompat.checkSelfPermission(this, Manifest.permission.GET_ACCOUNTS) == PackageManager.PERMISSION_GRANTED) && (ActivityCompat.checkSelfPermission(this, Manifest.permission.READ_CONTACTS) == PackageManager.PERMISSION_GRANTED)) {
                getGoogleAccounts();
            }

            else {
                ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.GET_ACCOUNTS, Manifest.permission.READ_CONTACTS}, 1);
                //return false;
            }
        }

第 3 步 - 为 onRequestPermissionsResult 添加代码 -

 @Override
    public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
        super.onRequestPermissionsResult(requestCode, permissions, grantResults);
        if(grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED){

            getGoogleAccounts();
        }
    }

第 4 步 - 最后添加代码以使用 AccountManager 检索帐户

private void getGoogleAccounts(){

   AccountManager am = AccountManager.get(this); // "this" references the current Context
    Account[] accounts = am.getAccountsByType("com.google");

    for (Account acc : accounts){
        System.out.println("http accounts " + acc);
    }
}

请参考以下链接了解 android 8 的变化 - https://developer.android.com/about/versions/oreo/android-8.0-changes#aaad

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