Question

我正在尝试将webservice加载到android webview.my请求url包含id。我想要做的是在for循环中取“j”值并根据“j”值运行网页。当第一个网页加载时，我想在5秒后加载第二个网页。这是我的代码

final Runnable myRunnable = new Runnable() {

        public void run() {
            if(i%10==0){
                try {

                    for (int j = 1; j <=3; j++) {

                        Calendar c = Calendar.getInstance();
                        SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd");
                        String Date = df.format(c.getTime());

                        StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitAll().build();
                        StrictMode.setThreadPolicy(policy); 

                        JSONObject json = new JSONObject();

                        json.put("id", j);


                        HttpParams httpParams = new BasicHttpParams();
                        HttpConnectionParams.setConnectionTimeout(httpParams,
                                TIMEOUT_MILLISEC);
                        HttpConnectionParams.setSoTimeout(httpParams, TIMEOUT_MILLISEC);
                        HttpClient client = new DefaultHttpClient(httpParams);

                        String url = "http://myweb/index?id="+""+j+"";

                        HttpPost request = new HttpPost(url);
                        request.setEntity(new ByteArrayEntity(json.toString().getBytes(
                                "UTF8")));
                        request.setHeader("json", json.toString());
                        HttpResponse response = client.execute(request);
                        HttpEntity entity = response.getEntity();
                        // If the response does not enclose an entity, there is no need
                        if (entity != null) {
                            InputStream instream = entity.getContent();

                            String result = RestClient.convertStreamToString(instream);
                            //                  Log.i("Read from server", result);

                            JSONObject jsonObj = new JSONObject(result);

                            String value = jsonObj.getString("posts");


                            slideWebView.loadUrl(value);// webview process

                            WebSettings webSettings = slideWebView.getSettings();
                            webSettings.setJavaScriptEnabled(true);
                            //      myWebView.setInitialScale(100);
                            slideWebView.getSettings().setLoadWithOverviewMode(true);   
                            slideWebView.getSettings().setUseWideViewPort(true);

                    }
//                      

                    }
                } catch (Throwable t5) {

                }



                }
        }
    };

Answer 1

使用Timer

尝试以下代码

Timer timer=new Timer();
timer.scheduleAtFixedRate(new TimerTask() {

                @Override
                public void run() {
                    pollWebService();
                }
            }, 0, 5000);

public void pollWebService()
{
final Runnable myRunnable = new Runnable() {

        public void run() {
            if(i%10==0){
                try {

                    for (int j = 1; j <=3; j++) {

                        Calendar c = Calendar.getInstance();
                        SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd");
                        String Date = df.format(c.getTime());

                        StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitAll().build();
                        StrictMode.setThreadPolicy(policy); 

                        JSONObject json = new JSONObject();

                        json.put("id", j);


                        HttpParams httpParams = new BasicHttpParams();
                        HttpConnectionParams.setConnectionTimeout(httpParams,
                                TIMEOUT_MILLISEC);
                        HttpConnectionParams.setSoTimeout(httpParams, TIMEOUT_MILLISEC);
                        HttpClient client = new DefaultHttpClient(httpParams);

                        String url = "http://myweb/index?id="+""+j+"";

                        HttpPost request = new HttpPost(url);
                        request.setEntity(new ByteArrayEntity(json.toString().getBytes(
                                "UTF8")));
                        request.setHeader("json", json.toString());
                        HttpResponse response = client.execute(request);
                        HttpEntity entity = response.getEntity();
                        // If the response does not enclose an entity, there is no need
                        if (entity != null) {
                            InputStream instream = entity.getContent();

                            String result = RestClient.convertStreamToString(instream);
                            //                  Log.i("Read from server", result);

                            JSONObject jsonObj = new JSONObject(result);

                            String value = jsonObj.getString("posts");


                            slideWebView.loadUrl(value);// webview process

                            WebSettings webSettings = slideWebView.getSettings();
                            webSettings.setJavaScriptEnabled(true);
                            //      myWebView.setInitialScale(100);
                            slideWebView.getSettings().setLoadWithOverviewMode(true);   
                            slideWebView.getSettings().setUseWideViewPort(true);

                    }
//                      

                    }
                } catch (Throwable t5) {

                }


            }
    }
};

如何在x秒后运行循环

1 个答案: