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android - 如何在我的应用程序中实现 AccountManager

转载 作者:塔克拉玛干 更新时间:2023-11-02 23:03:56 27 4
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我尝试在我的应用程序中实现一个客户管理器,以避免用户每次打开应用程序时都必须登录。

所以基本上,我已经有了我的身份验证 Activity ,用户可以在其中放置其登录名和密码,以及我们从服务器接收 token 的地方(身份验证目前是基本的)。现在我想添加 AccountManager 但我真的不明白哪个部分会去哪里。

我需要的是非常基本的:

  • 如果我以前从未登录过,请添加一个帐户
  • 如果我的帐户存在则自动记录
  • 如果自动身份验证不起作用,请在服务器上获取新 token

这是我的代码:

AuthenticationActivity.java

public class AuthenticationActivity extends Activity {

private EditText editTextUsername;
private EditText editTextPassword;
private Button buttonLogin;
private ProgressBar spinner;
private TextView error;
private TextView register;

private boolean accountRegistred;

AccountManager accountManager;

public static final String AUTHENTICATION = "authentication"; //action

private ConnectionSuccessReceiver connectionSuccessReceiver = new ConnectionSuccessReceiver();

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.authentification);

accountManager = AccountManager.get(this);
Account[] accounts = accountManager.getAccountsByType("login");

if (accounts.length > 0) {
//If there is an account
} else {
accountRegistred = false;
editTextUsername = (EditText) findViewById(R.id.editText_login);
editTextUsername.setVisibility(View.VISIBLE);
editTextPassword = (EditText) findViewById(R.id.editText_password);
editTextPassword.setVisibility(View.VISIBLE);
buttonLogin = (Button) findViewById(R.id.button_connection);
buttonLogin.setVisibility(View.VISIBLE);
error = (TextView) findViewById(R.id.textView_error);
register = (TextView) findViewById(R.id.textView_register);
register.setVisibility(View.VISIBLE);
spinner = (ProgressBar) findViewById(R.id.progressBar);

buttonLogin.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
//Here we start the service which will reach the server
Intent i = new Intent(getApplicationContext(), AuthenticationService.class);
i.putExtra("username", editTextUsername.getText().toString());
i.putExtra("password", editTextPassword.getText().toString());
getApplication().startService(i);
spinner.setVisibility(View.VISIBLE);
error.setVisibility(View.INVISIBLE);
}
});

register.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
startActivity(new Intent(AuthenticationActivity.this, RegisterActivity.class));
}
});
}
registerReceiver(connectionSuccessReceiver, new IntentFilter(AUTHENTICATION));
}

private class ConnectionSuccessReceiver extends BroadcastReceiver {
//Called when the server returns success after authentication, we get the TOKEN here
@Override
public void onReceive(Context context, Intent intent) {
if (intent.getStringExtra("STATE").equals("CONNECTED")) {
Intent i = new Intent(AuthenticationActivity.this, MainActivity.class);
i.putExtra("TOKEN", intent.getStringExtra("TOKEN"));
startActivity(i);
} else {
spinner.setVisibility(View.INVISIBLE);
error.setVisibility(View.VISIBLE);
}
finish();
}
}

@Override
protected void onDestroy() {
super.onDestroy();
unregisterReceiver(connectionSuccessReceiver);
}
}

AuthenticatorService.java

public class AuthenticatorService extends Service {

/**
* The implementation of the class |AccountAuthenticatorImpl|.
* It is implemented as a singleton
*/
private static AccountAuthenticator accountAuthenticator = null;

/**
* The main constructor.
*/
public AuthenticatorService() {
super();
}

/**
* The bind method of the service.
* @param intent The intent used to invoke the service
* @return The binder of the class which has implemented |AbstractAccountAuthenticator|
*/
@Override
public IBinder onBind(Intent intent) {
IBinder ret = null;
if (intent.getAction().equals(android.accounts.AccountManager.ACTION_AUTHENTICATOR_INTENT)) {
ret = getAuthenticator().getIBinder();
}
return ret;
}

/**
* The method used to obtain the authenticator. It is implemented as a singleton
* @return The implementation of the class |AbstractAccountAuthenticator|
*/
private AccountAuthenticator getAuthenticator() {
if (AuthenticatorService.accountAuthenticator == null) {
AuthenticatorService.accountAuthenticator = new AccountAuthenticator(this);
}

return AuthenticatorService.accountAuthenticator;
}

public class AccountAuthenticator extends AbstractAccountAuthenticator {
private Context context;

public AccountAuthenticator(Context context) {
super(context);
this.context = context;
}

@Override
public Bundle editProperties(AccountAuthenticatorResponse accountAuthenticatorResponse, String s) {
return null;
}

@Override
public Bundle addAccount(AccountAuthenticatorResponse response, String accountType, String authTokenType, String[] requiredFeatures, Bundle options) throws NetworkErrorException {

Bundle reply = new Bundle();

Intent i = new Intent(context, AuthenticationActivity.class);
i.setAction("com.readyo.app.authentication.addnewaccount");
i.putExtra(AccountManager.KEY_ACCOUNT_AUTHENTICATOR_RESPONSE, response);
i.putExtra("AuthTokenType", authTokenType);

reply.putParcelable(AccountManager.KEY_INTENT, i);

return reply;
}

@Override
public Bundle confirmCredentials(AccountAuthenticatorResponse accountAuthenticatorResponse, Account account, Bundle bundle) throws NetworkErrorException {
return null;
}

@Override
public Bundle getAuthToken(AccountAuthenticatorResponse accountAuthenticatorResponse, Account account, String s, Bundle bundle) throws NetworkErrorException {
return null;
}

@Override
public String getAuthTokenLabel(String s) {
return null;
}

@Override
public Bundle updateCredentials(AccountAuthenticatorResponse accountAuthenticatorResponse, Account account, String s, Bundle bundle) throws NetworkErrorException {
return null;
}

@Override
public Bundle hasFeatures(AccountAuthenticatorResponse accountAuthenticatorResponse, Account account, String[] strings) throws NetworkErrorException {
return null;
}
}
}

我也有通过 HTTP 访问服务器的代码,但我不确定它在这里是否重要。

感谢您的宝贵时间。

最佳答案

回复有点晚,但也许这个示例可以帮助您: https://github.com/dawidgdanski/AccountAuthenticatorExample

我之前创建过它,但注册/登录的逻辑可能会有帮助

add an account if I never logged in before:
  1. 如果您的应用流程需要用户登录才能访问数据,那么只需将您的 LoginActivity 声明为要显示的主要 Activity 即可。

验证和验证用户凭据后,调用 AccountManager.addAccountExcplicitly() 方法。

  1. 另一方面,如果您向匿名用户公开一些屏幕,那么在您提供登录/注册功能的应用程序部分(设置或其他)调用 AccountManager.addAccount()。此调用会激活您的 AccountAuthenticator,它处理您在 YourAccountAuthenticator.addAccount() 中的请求,并可能根据您的需要显示 LoginActivity/SignUpActivity。

请记住,您也可以从系统设置中创建特定于应用程序的帐户。

    log automatically if my account exists

嗯,我不确定我是否正确理解了你的需求。一旦您将帐户存储在 AccountManager 的元数据中,一旦您调用 AccountManager.getAccountsByType("my.account.type"),它就可用。如果您想自动登录,那么您必须在某个地方存储您的凭据,这显然面临敏感数据泄露的威胁。

 if the auto authentication doesn't work get a new token on the server

有一个 AccountManager.invalidateAuthToken() 方法可以删除当前存储的 authToken 并调用另一个。

您可以启动示例应用程序,我认为它至少可以解决您的一些问题,因为它涵盖了以下逻辑:

  • 登录/注册
  • 授权 token 失效
  • 显示当前登录的帐户
  • 退出

干杯

关于android - 如何在我的应用程序中实现 AccountManager,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/27927252/

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