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我需要显示 Http Web 调用超时异常的警报消息。（即）我需要在 android 中的 Web 调用的特定时间段（如 5 秒）内显示“服务器连接超时”之类的警报。我该怎么做？

我的代码：

公共类 MainActivity 扩展 Activity {

static InputStream is = null;
static JSONObject jObj = null;
static HttpClient httpClient;
String json, Token;
private ProgressDialog progressDialog;

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);

    progressDialog = ProgressDialog.show(MainActivity .this, "", "Loading...",
            true);
    new Thread() {
        // Run Mehod
        @Override
        public void run() {
            getCC();
            messagehandler.sendEmptyMessage(0);
        } // End of run
    }.start();
}

private Handler messagehandler = new Handler() {
    @Override
    public void handleMessage(Message msg) {
        super.handleMessage(msg);
        if (msg.what == 0) {
            progressDialog.dismiss();
            String response=json;
            //Do steps from response
        }

    }

};

private void getCC() {
    SSLCertificate();
    // HttpClient client = new DefaultHttpClient();
    String getURL = "My URL";
    HttpGet get = new HttpGet(getURL);

    get.setHeader("Accept", "*/*,text/xml,application/json");
    get.setHeader("Cache-Control", "no-cache");
    get.setHeader("Content-type", "application/json");

    HttpResponse response;
    try {
        // defaultHttpClient

        response = httpClient.execute(get);
        HttpEntity httpEntity = response.getEntity();
        is = httpEntity.getContent();

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

    try {
        BufferedReader reader = new BufferedReader(new InputStreamReader(
                is, "iso-8859-1"), 8);
        StringBuilder sb = new StringBuilder();
        String line = null;
        while ((line = reader.readLine()) != null) {
            sb.append(line + "\n");
        }
        is.close();
        json = sb.toString();
    } catch (Exception e) {

    }

}

private static void SSLCertificate() {
    SchemeRegistry schemeRegistry = new SchemeRegistry();
    HttpParams params = new BasicHttpParams();
    HttpProtocolParams.setContentCharset(params, "HTTP.ISO-8859-1");
    HttpProtocolParams.setVersion(params, HttpVersion.HTTP_1_1);
    schemeRegistry.register(new Scheme("https", new EasySSLSocketFactory(),
            443));

    ClientConnectionManager ccm = new ThreadSafeClientConnManager(params,
            schemeRegistry);
    HttpConnectionParams.setConnectionTimeout(params, 300);

    HttpConnectionParams.setSoTimeout(params, 300);

    httpClient = new DefaultHttpClient(params);

    httpClient = new DefaultHttpClient(ccm, params);

}

} 谢谢。

4

2 回答 2

0

使用HttpParams：

int timeout = (int) (5 * DateUtils.SECOND_IN_MILLIS);
params.setConnectionTimeout(params, timeout);
params.setSoTimeout(params, timeout);

然后，用 包围try catch。

于 2013-06-06T08:54:53.800 回答
0 
final HttpParams httpParams = new BasicHttpParams();
HttpConnectionParams.setConnectionTimeout(httpParams, 10000);

HttpClient client = new DefaultHttpClient(httpParams);
HttpGet request = new HttpGet(url);

如果花费超过 10000 毫秒，将抛出异常

于 2013-06-06T08:53:34.950 回答