Android我可以知道如何啟動線程嗎？

Question

如何啟動線程？ 還是在調用sendJson()函數時使線程自動啟動？

還有一件事，我想啟動一個線程並在后台每5分鍾執行一次sendJson() 。

public void sendJson(final JSONObject json) {
        Thread t = new Thread() {
            public void run() {
                Log.d(null,"Sync Thread Start");
                Looper.prepare(); //For Preparing Message Pool for the child Thread
                HttpClient client = new DefaultHttpClient();
                HttpConnectionParams.setConnectionTimeout(client.getParams(), 10000); //Timeout Limit
                HttpResponse response;

                try {
                    HttpPost httpPost = new HttpPost(global.Server + "/BusTicket/sync/sync.php");
                 // Prepare JSON to send by setting the entity
                    httpPost.setEntity(new StringEntity(json.toString(), "UTF-8"));

                    // Set up the header types needed to properly transfer JSON
                    httpPost.setHeader("Content-Type", "application/json");
                    httpPost.setHeader("Accept-Encoding", "application/json");
                    httpPost.setHeader("Accept-Language", "en-US");
                    response = client.execute(httpPost);
                    StatusLine statusLine = response.getStatusLine();
                    String responseString = null;

                    if(statusLine.getStatusCode() == HttpStatus.SC_OK){
                        ByteArrayOutputStream out = new ByteArrayOutputStream();
                        response.getEntity().writeTo(out);
                        out.close();
                        responseString = out.toString();
                        Log.d(null,"responseString = "+ responseString  );
                    }
                    /*Checking response */
                    if(response!=null){
                        InputStream in = response.getEntity().getContent(); //Get the data in the entity
                        Log.d(null,"Sync Reponse= "+ convertStreamToString(in));
                        Log.d(null,"Sync Reponse= "+ in.toString() );
                    }

                } catch(Exception e) {
                    e.printStackTrace();
                }

                Looper.loop(); //Loop in the message queue
            }
        };
    }

Answer 1

這只是聲明，要開始使用，請使用：

t.start();

更多信息在這里 。 要了解如何定期運行您的Thread ，請參閱this 。