Android 连接到本地主机

It worked really good and i got json data at this address. So i guess my code is good and the issue here is my localhost url, i don't know what should be its exact form.. I read many threads about it but i didn't find a solution.

这是我的代码:

主要活动:

public class MainActivity extends Activity {
    private String url = "http://10.0.2.2:8080/tests/PhpProject1/connectionBDD.php";

    private ListView lv = null;
    private Button bGetData;

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

        final JsonDownloaderTask task = new JsonDownloaderTask(this);
        lv = (ListView) findViewById(R.id.list);

        bGetData = (Button)findViewById(R.id.getdata);
        bGetData.setOnClickListener(new View.OnClickListener() {

            @Override
            public void onClick(View v) {               
                task.execute(url);                      
            }
        });
    }

    public void jsonTaskComplete(JSONArray data){
        //todo
    }   
}

异步任务:

public class JsonDownloaderTask extends AsyncTask<String, String, JSONArray> {

    MainActivity ma;

    public JsonDownloaderTask(MainActivity main){
        ma = main;
    }

    @Override
    protected JSONArray doInBackground(String... url) {
        JSONParser jParser = new JSONParser();
        // Getting JSON from URL
        JSONArray jsonArray = null;
        try {
            jsonArray = jParser.getJSONFromUrl(url[0]);
        } catch (IOException e) {
            e.printStackTrace();
        }
        return jsonArray;        
    }

    protected void onPostExecute(JSONArray data){

        ma.jsonTaskComplete(data);
    }
}

JSON解析器:

public class JSONParser {
    String data = "";
    JSONArray jsonArray = null;        
    InputStream is = null;

    public JSONParser(){}

    // Method to download json data from url
    public JSONArray getJSONFromUrl(String strUrl) throws IOException{
        try{
            URL url = new URL(strUrl);

            // Creating an http connection to communicate with url
            HttpURLConnection urlConnection = (HttpURLConnection) url.openConnection();

            // Connecting to url
            urlConnection.connect();

            // Reading data from url
            is = urlConnection.getInputStream();

            BufferedReader br = new BufferedReader(new InputStreamReader(is));

            StringBuffer sb  = new StringBuffer();

            String line = "";
            while( ( line = br.readLine())  != null){
                sb.append(line);
            }
            is.close();
            data = sb.toString();

            //br.close();

            jsonArray = new JSONArray(data);

        }catch(Exception e){
            Log.d("Exception while downloading url", e.toString());
        }finally{
            is.close();
        }

        return jsonArray;
    }
}

推荐答案

首先你要在eclipse设置中绑定你的服务器所在机器的IP地址.