java - Android:异常 "java.lang.IllegalStateException: Scheme ' https' 未注册”

Question

由于强制关闭，用户向我发送了此堆栈跟踪信息:

java.lang.IllegalStateException: Scheme 'https' not registered.
at org.apache.http.conn.scheme.SchemeRegistry.getScheme(SchemeRegistry.java:80)
at org.apache.http.impl.conn.DefaultHttpRoutePlanner.determineRoute(DefaultHttpRoutePlanner.java:107)
at org.apache.http.impl.client.DefaultRequestDirector.determineRoute(DefaultRequestDirector.java:581)
at org.apache.http.impl.client.DefaultRequestDirector.handleResponse(DefaultRequestDirector.java:923)
at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:473)
at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:555)
at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:487)
at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:465)
at com.augustinianum.augustinianum.AlarmService.doWakefulWork(AlarmService.java:70)
at com.commonsware.cwac.wakeful.WakefulIntentService.onHandleIntent(WakefulIntentService.java:106)
at android.app.IntentService$ServiceHandler.handleMessage(IntentService.java:59)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:130)
at android.os.HandlerThread.run(HandlerThread.java:60)

这是强制关闭类中最重要的代码，它是 Commonsware 的 WakefulIntentService，它基本上只是一个普通的 IntentService，但它自动持有一个唤醒锁(不要认为这与异常(exception)，但以防万一)。此代码下载网页的 HTML 代码:

private DefaultHttpClient createHttpClient() {
        HttpParams my_httpParams = new BasicHttpParams();
        HttpConnectionParams.setConnectionTimeout(my_httpParams, 3000);
        SchemeRegistry registry = new SchemeRegistry();
        registry.register(new Scheme("http", PlainSocketFactory.getSocketFactory(), 80));
        ThreadSafeClientConnManager multiThreadedConnectionManager = new ThreadSafeClientConnManager(my_httpParams, registry);
        DefaultHttpClient httpclient = new DefaultHttpClient(multiThreadedConnectionManager, my_httpParams);
        return httpclient;
    }


@Override
    protected void doWakefulWork(Intent arg0) {

        int mStatusCode = 0;
        String content = "";

        String url = "http://www.example.com/";

        DefaultHttpClient httpclient = createHttpClient();
        HttpGet httpget = new HttpGet(url);

        try {
            HttpResponse response = httpclient.execute(httpget);
            StatusLine statusLine = response.getStatusLine();
            mStatusCode = statusLine.getStatusCode();

            if (mStatusCode == 200){
                content = EntityUtils.toString(response.getEntity());
            }

        } catch (ClientProtocolException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }

第 70 行(崩溃的地方)是这一行:

HttpResponse response = httpclient.execute(httpget);

在我的 list 中，我只是这样声明的:

<service
    android:name=".AlarmService">
</service>

奇怪的是，这个异常并不是在所有设备上都会发生，而且并不总是在执行这段代码时发生。大多数时候，这段代码执行得很好，但有时会发生这种异常。

有人知道我能做些什么吗？

非常非常感谢!

Answer 1

您不需要 ThreadSafeClientConnManager，因为 IntentService 只使用一个线程。我会删除所有这些东西，这将摆脱您的自定义 SchemeRegistry，这可能会帮助您处理未注册的方案。