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最近，我开始从我的小部件得到以下错误。我没有做任何改变，我想知道这个问题会是什么，以及如何解决这个问题。我的窗口小部件根据我创建的用于访问第三方客户端信息的服务信息进行更新。我几天前才得到数据。现在我收到下面的错误。未知的主机异常
我刚刚尝试在活动（即非小工具）中运行代码，它工作正常。我不确定它为什么在一个活动中起作用，但不是一个小部件。我还在单独的Intent中访问第三方网站。
我已经尝试重新启动模拟器，eclipse和重新启动设备。我的清单文件具有访问Internet的适当权限。这个问题最初似乎是一个网络问题，但我确认我可以从模拟器和设备上的网络浏览器访问URL。代码刚好在几天前工作。我已经用我的清单文件更新了这篇文章。代码在调用parseMyInfo之前就会失败。在OAuth使用者/提供者调用期间抛出异常。
错误
oauth.signpost.AbstractOAuthProvider.retrieveToken(AbstractOAuthProvider.java:214)
08-24 22:36:02.063: ERROR/ARCHOS(541): at oauth.signpost.AbstractOAuthProvider.retrieveRequestToken(AbstractOAuthProvider.java:69)
08-24 22:36:02.063: ERROR/ARCHOS(541): at com.test.community.SG_Service$TED.populate(SG_Service.java:276)
08-24 22:36:02.063: ERROR/ARCHOS(541): at com.test.community.SG_Service$SGHandler.getTEDData(SG_Service.java:813)
08-24 22:36:02.063: ERROR/ARCHOS(541): at com.test.community.SG_Service$SGService_BG.onHandleIntent(SG_Service.java:844)
08-24 22:36:02.063: ERROR/ARCHOS(541): at android.app.IntentService$ServiceHandler.handleMessage(IntentService.java:59)
08-24 22:36:02.063: ERROR/ARCHOS(541): at android.os.Handler.dispatchMessage(Handler.java:99)
08-24 22:36:02.063: ERROR/ARCHOS(541): at android.os.Looper.loop(Looper.java:123)
08-24 22:36:02.063: ERROR/ARCHOS(541): at android.os.HandlerThread.run(HandlerThread.java:60)
08-24 22:36:02.063: ERROR/ARCHOS(541): Caused by: java.net.UnknownHostException: communitymonitorstudy.stepgreen.org
08-24 22:36:02.063: ERROR/ARCHOS(541): at java.net.InetAddress.lookupHostByName(InetAddress.java:513)
08-24 22:36:02.063: ERROR/ARCHOS(541): at java.net.InetAddress.getAllByNameImpl(InetAddress.java:278)
08-24 22:36:02.063: ERROR/ARCHOS(541): at java.net.InetAddress.getAllByName(InetAddress.java:242)
08-24 22:36:02.063: ERROR/ARCHOS(541): at org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.java:136)
08-24 22:36:02.063: ERROR/ARCHOS(541): at org.apache.http.impl.conn.AbstractPoolEntry.open(AbstractPoolEntry.java:164)
08-24 22:36:02.063: ERROR/ARCHOS(541): at org.apache.http.impl.conn.AbstractPooledConnAdapter.open(AbstractPooledConnAdapter.java:119)
08-24 22:36:02.063: ERROR/ARCHOS(541): at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:348)
08-24 22:36:02.063: ERROR/ARCHOS(541): at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:555)
08-24 22:36:02.063: ERROR/ARCHOS(541): at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:487)
08-24 22:36:02.063: ERROR/ARCHOS(541): at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:465)
08-24 22:36:02.063: ERROR/ARCHOS(541): at oauth.signpost.commonshttp.CommonsHttpOAuthProvider.sendRequest(CommonsHttpOAuthProvider.java:64)
08-24 22:36:02.063: ERROR/ARCHOS(541): at oauth.signpost.AbstractOAuthProvider.retrieveToken(AbstractOAuthProvider.java:177)
失败代码 多数民众赞成失败的代码如下：
HttpClient client = new DefaultHttpClient();
consumer = new CommonsHttpOAuthConsumer(Constants.CONSUMER_KEY,
Constants.CONSUMER_SECRET);
provider = new CommonsHttpOAuthProvider(Constants.REQUEST_TOKEN_URL,
Constants.ACCESS_TOKEN_URL, Constants.AUTHORIZE_URL, client);
provider.retrieveRequestToken(consumer, OAuth.OUT_OF_BAND);
provider.retrieveAccessToken(consumer, null);
MyInfo info = parseMyInfo(userName, consumer, client);
清单文件
<application android:icon="@drawable/icon" android:debuggable="true"
android:label="@string/app_name" android:name="AppStatus">
<activity android:name=".CommunityMonitorActivity"android:label="@string/app_name">
<intent-filter>
<action android:name="com.cmu.community.CommunityWidget.ACTION_WIDGET_CONFIGURE"/>
</intent-filter>
</activity>
<activity android:name=".MyInfoActivity"
android:theme="@style/Theme.D1"
android:label="@string/my_info"
/>
<activity android:name=".HomeActivity"
android:theme="@style/Theme.D1"
android:label="@string/home"
/>
<activity android:name=".AboutActivity"
android:theme="@style/Theme.D1"
android:label="@string/about"
/>
<receiver android:name=".CommunityWidget" android:label="@string/app_name">
<intent-filter>
<action android:name="android.appwidget.action.APPWIDGET_UPDATE" />
<action android:name="com.cmu.community.CommunityWidget.ACTION_WIDGET_RECEIVER"/>
</intent-filter>
<meta-data android:name="android.appwidget.provider"
android:resource="@xml/communitywidgetprovider" />
</receiver>
<receiver android:name="com.cmu.community.Stepgreen_Service$StepgreenReceiver">
<intent-filter>
<action android:name="com.cmu.community.ACTION_STEPGREENMANAGER"></action>
</intent-filter>
</receiver>
<receiver android:name="com.cmu.community.AppStatus_Service$AppStatusReceiver">
<intent-filter>
<action android:name="com.cmu.community.ACTION_APPSTATUSMANAGER"></action>
</intent-filter>
</receiver>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"></uses-
permission>
<uses-permission android:name="android.permission.READ_PHONE_STATE"></uses-permission>
<uses-permission android:name="android.permission.INTERNET"></uses-permission>
<service android:name="Stepgreen_Service$StepgreenService_BG"></service>
</application>
</manifest>
'UnknowHostException'通常意味着您的DNS系统无法解析主机名。 – asgs
不知道为什么这是downvoted。我赞成你支持。可能是由于精英绅士编辑之前的看法。 :)和asgs是正确的，我会仔细检查，你有互联网许可启用，这将是我的第一步。 – Codeman
您是否确定您的许可在manifest.xml中是正确的？你可以将它添加到你原来的文章吗？ – elevine