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