118 lines
4.1 KiB
Java
118 lines
4.1 KiB
Java
/*
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* Twidere - Twitter client for Android
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*
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* Copyright (C) 2012-2015 Mariotaku Lee <mariotaku.lee@gmail.com>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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package org.mariotaku.twidere.util;
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import android.annotation.TargetApi;
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import android.content.Context;
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import android.os.Build;
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import android.os.Handler;
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import android.os.Looper;
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import android.support.annotation.Nullable;
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import android.support.annotation.UiThread;
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import android.support.annotation.WorkerThread;
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import android.webkit.WebSettings;
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import android.webkit.WebView;
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import java.lang.reflect.Constructor;
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import java.util.concurrent.Callable;
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import java.util.concurrent.ExecutionException;
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import java.util.concurrent.FutureTask;
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import java.util.concurrent.TimeUnit;
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import java.util.concurrent.TimeoutException;
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/**
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* Created by mariotaku on 15/4/12.
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*/
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public class UserAgentUtils {
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private UserAgentUtils() {
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}
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// You may uncomment next line if using Android Annotations library, otherwise just be sure to run it in on the UI thread
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@UiThread
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public static String getDefaultUserAgentString(Context context) {
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if (Looper.myLooper() != Looper.getMainLooper())
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throw new IllegalStateException("User-Agent cannot be fetched from worker thread");
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try {
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if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) {
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return NewApiWrapper.getDefaultUserAgent(context);
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}
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final Constructor<WebSettings> constructor = WebSettings.class.getDeclaredConstructor(Context.class, WebView.class);
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constructor.setAccessible(true);
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try {
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WebSettings settings = constructor.newInstance(context, null);
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return settings.getUserAgentString();
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} finally {
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constructor.setAccessible(false);
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}
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} catch (Exception e) {
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WebView webView = null;
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try {
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webView = new WebView(context);
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return webView.getSettings().getUserAgentString();
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} catch (Exception e2) {
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return System.getProperty("http.agent");
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} finally {
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if (webView != null) {
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webView.destroy();
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}
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}
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}
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}
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@WorkerThread
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@Nullable
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public static String getDefaultUserAgentStringSafe(final Context context) {
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if (Looper.myLooper() == Looper.getMainLooper()) {
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//noinspection ResourceType
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return getDefaultUserAgentString(context);
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}
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final Handler handler = new Handler(Looper.getMainLooper());
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FutureTask<String> task = new FutureTask<>(new Callable<String>() {
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@Override
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public String call() throws Exception {
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return getDefaultUserAgentString(context);
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}
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});
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try {
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handler.post(task);
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return task.get(1, TimeUnit.SECONDS);
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} catch (InterruptedException e) {
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throw new RuntimeException(e);
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} catch (ExecutionException e) {
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throw new RuntimeException(e);
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} catch (TimeoutException e) {
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throw new RuntimeException(e);
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} finally {
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handler.removeCallbacksAndMessages(null);
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}
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}
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@TargetApi(Build.VERSION_CODES.JELLY_BEAN_MR1)
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static class NewApiWrapper {
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private NewApiWrapper() {
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}
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@UiThread
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static String getDefaultUserAgent(Context context) {
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return WebSettings.getDefaultUserAgent(context);
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}
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}
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}
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