如何获取Android的主要电子邮件地址(或电子邮件地址列表)?
据我所知,在2.0及以上版本的操作系统中,支持多个电子邮件地址,但在2.0以下版本中,每个设备只能有一个电子邮件地址。
如何获取Android的主要电子邮件地址(或电子邮件地址列表)?
据我所知,在2.0及以上版本的操作系统中,支持多个电子邮件地址,但在2.0以下版本中,每个设备只能有一个电子邮件地址。
有几种方法可以实现这一点,如下所示。
友情提示:在处理帐户、配置文件和联系人数据时,请向用户提供谨慎和诚实的服务。如果您滥用用户的电子邮件地址或其他个人信息,可能会发生糟糕的事情。
您可以使用AccountManager.getAccounts
或AccountManager.getAccountsByType
获取设备上所有帐户名称的列表。对于某些帐户类型(包括com.google
),帐户名称是电子邮件地址。下面是一个示例片段。
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" />
关于如何使用AccountManager
的更多信息,请参阅SDK中的Contact Manager示例代码。
从Android 4.0(Ice Cream Sandwich)开始,您可以通过访问用户配置文件来获取用户的电子邮件地址。访问用户配置文件有点繁重,因为它需要两个权限(下面会详细介绍),但电子邮件地址是相当敏感的数据,所以这就是门槛。
以下是一个完整的示例,它使用CursorLoader
来检索包含电子邮件地址的配置文件数据行。
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;
}
}
这需要同时具备READ_PROFILE
和READ_CONTACTS
权限:
<uses-permission android:name="android.permission.READ_PROFILE" />
<uses-permission android:name="android.permission.READ_CONTACTS" />
cursor.isAfterLast()
总是返回 true。有什么想法吗? - cprcrack这可能对其他人有用:
使用AccountPicker获取用户的电子邮件地址,无需任何全局权限,并允许用户知晓、授权或取消该过程。
我会使用Android的AccountPicker,该功能在ICS中引入。
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);
}
}
public String getUsername() {
AccountManager manager = AccountManager.get(this);
Account[] accounts = manager.getAccountsByType("com.google");
List<String> possibleEmails = new LinkedList<String>();
for (Account account : accounts) {
// TODO: Check possibleEmail against an email regex or treat
// account.name as an email address only for certain account.type values.
possibleEmails.add(account.name);
}
if (!possibleEmails.isEmpty() && possibleEmails.get(0) != null) {
String email = possibleEmails.get(0);
String[] parts = email.split("@");
if (parts.length > 1)
return parts[0];
}
return null;
}
android.permission.GET_ACCOUNTS
权限,该权限被定义为“危险”权限(需要在运行时请求):https://developer.android.com/reference/android/Manifest.permission.html#GET_ACCOUNTS - SagiLow有一种Android API可以让用户选择他们的电子邮件地址,而无需权限。请查看: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,让用户选择电子邮件地址。结果将在 onActivityResult()
中返回。
很遗憾,已接受的答案无效。
我来晚了,但这是内部Android电子邮件应用程序的解决方案,除非内容URI由提供者更改:
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;
}
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 "";
}
GET_ACCOUNTS
权限:<uses-permission android:name="android.permission.GET_ACCOUNTS" />
然后:
editTextEmailAddress.setText(getUserEmail());
步骤 1 - 在 AndroidManifest.xml 文件中添加以下代码 -
<uses-permission android:name="android.permission.GET_ACCOUNTS" />
<uses-permission android:name="android.permission.READ_CONTACTS" />
步骤2 - 在您的活动中添加以下代码,以在运行时请求权限。
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;
}
}
步骤 3 - 添加onRequestPermissionsResult的代码 -
@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();
}
}
步骤 4 - 最后,添加代码使用 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);
}
}