| /* |
| * Copyright (C) 2015 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package android.support.v7.mms; |
| |
| import android.content.Context; |
| import android.telephony.TelephonyManager; |
| import android.text.TextUtils; |
| import android.util.Log; |
| |
| /** |
| * The default implementation of loader of UA and UAProfUrl |
| */ |
| class DefaultUserAgentInfoLoader implements UserAgentInfoLoader { |
| // Default values to be used as user agent info |
| private static final String DEFAULT_USER_AGENT = "Android MmsLib/1.0"; |
| private static final String DEFAULT_UA_PROF_URL = |
| "http://www.gstatic.com/android/sms/mms_ua_profile.xml"; |
| |
| private Context mContext; |
| private boolean mLoaded; |
| |
| private String mUserAgent; |
| private String mUAProfUrl; |
| |
| DefaultUserAgentInfoLoader(final Context context) { |
| mContext = context; |
| } |
| |
| @Override |
| public String getUserAgent() { |
| load(); |
| return mUserAgent; |
| } |
| |
| @Override |
| public String getUAProfUrl() { |
| load(); |
| return mUAProfUrl; |
| } |
| |
| private void load() { |
| if (mLoaded) { |
| return; |
| } |
| boolean didLoad = false; |
| synchronized (this) { |
| if (!mLoaded) { |
| loadLocked(); |
| mLoaded = true; |
| didLoad = true; |
| } |
| } |
| if (didLoad) { |
| Log.i(MmsService.TAG, "Loaded user agent info: " |
| + "UA=" + mUserAgent + ", UAProfUrl=" + mUAProfUrl); |
| } |
| } |
| |
| private void loadLocked() { |
| if (Utils.hasUserAgentApi()) { |
| // load the MMS User agent and UaProfUrl from TelephonyManager APIs |
| final TelephonyManager telephonyManager = (TelephonyManager) mContext.getSystemService( |
| Context.TELEPHONY_SERVICE); |
| mUserAgent = telephonyManager.getMmsUserAgent(); |
| mUAProfUrl = telephonyManager.getMmsUAProfUrl(); |
| } |
| if (TextUtils.isEmpty(mUserAgent)) { |
| mUserAgent = DEFAULT_USER_AGENT; |
| } |
| if (TextUtils.isEmpty(mUAProfUrl)) { |
| mUAProfUrl = DEFAULT_UA_PROF_URL; |
| } |
| } |
| } |