Java 如何获取 Android 用户的电子邮件地址？
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How can you get an Android user's email address?
提问by nikib3ro
I have android.permission.READ_OWNER_DATAbut I can't find any reliable code that would explain how can I read email address of device's owner. How can I do this?
我有，android.permission.READ_OWNER_DATA但我找不到任何可靠的代码来解释我如何读取设备所有者的电子邮件地址。我怎样才能做到这一点？
采纳答案by Jim Blackler
Why you wanna do that?
你为什么要这样做？
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;
}
}
In your AnroidManifest.xml
在您的 AnroidManifest.xml 中
<uses-permission android:name="android.permission.GET_ACCOUNTS" />
回答by Keshav Gera
Working on MarshMallow Version
处理 MarshMallow 版本
btn_click=(Button) findViewById(R.id.btn_click);
btn_click=(按钮) 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
// 低于棉花糖
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);
}
}
});
回答by Zia Muhammad
please add this permission in your manifest file.
请在您的清单文件中添加此权限。
<uses-permission android:name="android.permission.GET_ACCOUNTS" />
<uses-permission android:name="android.permission.GET_ACCOUNTS" />
Add this function in your MainActivity.java
在 MainActivity.java 中添加此函数
public void getAccounts() {
StringBuilder emailAccounts = new StringBuilder();
if (ContextCompat.checkSelfPermission(MainActivity.this, Manifest.permission.GET_ACCOUNTS) != PackageManager.PERMISSION_GRANTED) {
if (ActivityCompat.shouldShowRequestPermissionRationale(MainActivity.this, Manifest.permission.GET_ACCOUNTS)) {
ActivityCompat.requestPermissions(MainActivity.this, new String[]{Manifest.permission.GET_ACCOUNTS}, 1);
} else {
ActivityCompat.requestPermissions(MainActivity.this, new String[]{Manifest.permission.GET_ACCOUNTS}, 1);
}
}
else {
List<String> accountList = new ArrayList<String>();
Pattern gmailPattern = Patterns.EMAIL_ADDRESS;
Account[] accounts = AccountManager.get(this).getAccounts();
for (Account account : accounts) {
if (gmailPattern.matcher(account.name).matches()) {
emailAccounts.append(flag + ". " + "<b>" + account.name + "<br>" +
"---------" + "---------<br>"); ;
}
}
deviceDetails.setText(Html.fromHtml(emailAccounts+""));
}
}now call this function in your onCreate() method like this.
现在像这样在你的 onCreate() 方法中调用这个函数。
getAccounts();
getAccounts();
