Android开发之帐户管理
android.accounts主要包括了集中式的帐户管理API,
AccountManagerCallback,
AccountManagerFuture,
OnAccountsUpdateListener,
AbstractAccountAuthenticator,
Account,
AccountAuthenticatorActivity,
AccountAuthenticatorResponse,
AccountManager,
AuthenticatorDescription,
示例学习：添加多个帐户来集中管理
1. 在AndroidManifest.xml文件中授权，以及确定API lever为5，
<uses-sdk android:minSdkVersion=”5” />
<uses-permission android:name=”android.permission.MANAGE_ACCOUNTS”/>
<uses-permission android:name=”android.permission.ACCOUNT_MANAGER”/>
<uses-permission android:name=”android.permission.GET_ACCOUNTS”/>
<uses-permission android:name=”android.permission.AUTHENTICATE_ACCOUNTS”/>
2. 在Activity中，得到AccountManager对象
AccountManager accountManager = AccountManager.get(this);
AccountManager中的常用方法
addAccount,
addOnAccountsUpdatedListener,
removeOnAccountsUpdatedListener,
clearPassword,
getAccounts,
getAccountsByType,
getPassword,
getUserData,
setPassword,
removeAccount,
将指定类型的帐户信息全部列出来
Account[] accounts = accountManager.getAccountsByType(xxx);
for(Account account : accounts) {
String name = account.name;
String type = account.type;
}
如何将帐户信息添加到帐户管理器中
Activity self = this;
…
String server, username, password, type;
…
Account account = new Account(name, type);
Bundle userdata = new Bundle();
userdata.putString(“server”, server);
AccountManager am = AccountManager.get(self);
// 向帐户管理器中添加一个帐户
if(am.addAccountExplicitly(account, password, userdata)) {
Bundle result = new Bundle();
result.putString(AccountManager.KEY_ACCOUNT_NAME, username);
result.putString(AccountManager.KEY_ACCOUNT_TYPE, type);
setAccountAuthenticatorResult(result);
}
// 添加一个帐户服务(Service)和一个验证器(AbstractAccountAuthenticator)
1. 构建res/xml/authenticator.xml
<?xml version=”1.0” encoding=”utf-8”?>
<account-authenticator xmlns:android=”http://schemas.android.com/apk/res/android”
android:accountType=”com.txrj.AccountType”
android:icon=”@drawable/icon”
android:smallIcon=”@drawable/icon”
android:label=”@string/account_label”
android:accountPreferences=”@xml/account_preferences”
/>
2. 在AndroidManifest.xml文件中开启一个帐户管理服务
<service android:name=”SleepyAccountsService”>
<intent-filter>
<action android:name=”android.accounts.AccountAuthenticator” />
</intent-filter>
<meta-data android:name=”android.accounts.AccountAuthenticator”
android:resource=”@xml/authenticator” />
</service>
3. 实现帐户服务类SleepyAccountsService
public class SleepyAccountsService extends Service {
private SleepyAccountAuthenticator authenticator;
public Ibinder onBind(Intent intent) {
if(intent.getAction().equals(android.accounts.AccountManager.ACTION_AUTHENTICATOR_INTENT)) {
return getSleepyAuthenticator().getIBinder();
return null;
}
private SleepyAccountAuthenticator getSleepyAuthenticator() {
if(authenticator == null)
authenticator = new SleepyAccountAuthenticator(this);
return authenticator;
}
}
}
4. 在添加、操作帐户时会通过AbstractAccountAuthenticator实现异步调用。
public Bundle addAccount(AccountAuthenticatorResponse response, String accountType,
String authTokenType, String[] requiredFeatures, Bundle options) throws NetworkErrorException
{
Bundle bundle = new Bundle();
Intent intent = new Intent(context, SleepyAccountAuthenticatorActivity.class);;
intent.putExtra(AccountManager.KEY_ACCOUNT_AUTHENTICATOR_RESPONSE, response);
bundle.putParcelable(AccountManager.KEY_INTENT, intent);
return bundle;
}