1 /* 2 * Copyright (C) 2009 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package android.accounts; 18 19 import android.content.pm.PackageManager; 20 import android.content.pm.RegisteredServicesCache; 21 import android.content.pm.XmlSerializerAndParser; 22 import android.content.res.Resources; 23 import android.content.res.TypedArray; 24 import android.content.Context; 25 import android.util.AttributeSet; 26 import android.text.TextUtils; 27 import org.xmlpull.v1.XmlPullParser; 28 import org.xmlpull.v1.XmlSerializer; 29 import org.xmlpull.v1.XmlPullParserException; 30 31 import java.io.IOException; 32 33 /** 34 * A cache of services that export the {@link IAccountAuthenticator} interface. This cache 35 * is built by interrogating the {@link PackageManager} and is updated as packages are added, 36 * removed and changed. The authenticators are referred to by their account type and 37 * are made available via the {@link RegisteredServicesCache#getServiceInfo} method. 38 * @hide 39 */ 40 /* package private */ class AccountAuthenticatorCache 41 extends RegisteredServicesCache<AuthenticatorDescription> 42 implements IAccountAuthenticatorCache { 43 private static final String TAG = "Account"; 44 private static final MySerializer sSerializer = new MySerializer(); 45 46 public AccountAuthenticatorCache(Context context) { 47 super(context, AccountManager.ACTION_AUTHENTICATOR_INTENT, 48 AccountManager.AUTHENTICATOR_META_DATA_NAME, 49 AccountManager.AUTHENTICATOR_ATTRIBUTES_NAME, sSerializer); 50 } 51 52 public AuthenticatorDescription parseServiceAttributes(Resources res, 53 String packageName, AttributeSet attrs) { 54 TypedArray sa = res.obtainAttributes(attrs, 55 com.android.internal.R.styleable.AccountAuthenticator); 56 try { 57 final String accountType = 58 sa.getString(com.android.internal.R.styleable.AccountAuthenticator_accountType); 59 final int labelId = sa.getResourceId( 60 com.android.internal.R.styleable.AccountAuthenticator_label, 0); 61 final int iconId = sa.getResourceId( 62 com.android.internal.R.styleable.AccountAuthenticator_icon, 0); 63 final int smallIconId = sa.getResourceId( 64 com.android.internal.R.styleable.AccountAuthenticator_smallIcon, 0); 65 final int prefId = sa.getResourceId( 66 com.android.internal.R.styleable.AccountAuthenticator_accountPreferences, 0); 67 final boolean customTokens = sa.getBoolean( 68 com.android.internal.R.styleable.AccountAuthenticator_customTokens, false); 69 if (TextUtils.isEmpty(accountType)) { 70 return null; 71 } 72 return new AuthenticatorDescription(accountType, packageName, labelId, iconId, 73 smallIconId, prefId, customTokens); 74 } finally { 75 sa.recycle(); 76 } 77 } 78 79 private static class MySerializer implements XmlSerializerAndParser<AuthenticatorDescription> { 80 public void writeAsXml(AuthenticatorDescription item, XmlSerializer out) 81 throws IOException { 82 out.attribute(null, "type", item.type); 83 } 84 85 public AuthenticatorDescription createFromXml(XmlPullParser parser) 86 throws IOException, XmlPullParserException { 87 return AuthenticatorDescription.newKey(parser.getAttributeValue(null, "type")); 88 } 89 } 90 } 91