异步加载

package com.example.NetUlit;

import android.content.Context;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.os.AsyncTask;

import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;

public class NetUli {
public static boolean isgetconten(Context context) {
if (context != null) {
ConnectivityManager manager = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo info = manager.getActiveNetworkInfo();
if (info != null) {
return info.isConnected();
}

    }
    return false;
}

public static String getDate(String Url) {
    try {
        URL url = new URL(Url);
        HttpURLConnection connection = (HttpURLConnection) url.openConnection();
        connection.setRequestMethod("GET");
        int code = connection.getResponseCode();
        if (code == 200) {
            InputStream stream = connection.getInputStream();
            BufferedReader reader = new BufferedReader(new InputStreamReader(stream));
            StringBuffer buffer = new StringBuffer();
            String str = "";
            while ((str = reader.readLine()) != null) {
                buffer.append(str);
            }
            return buffer.toString();
        }
    } catch (Exception e) {
        e.printStackTrace();
    }
    return "";
}

//异步加载
public interface MyCallBack {
void getDate(String s);
}

public static void MyAsyncTaca(String StringURl, final MyCallBack callBack) {
    new AsyncTask<String, Void, String>() {
        @Override
        protected void onPostExecute(String s) {
            super.onPostExecute(s);
            callBack.getDate(s);
        }

        @Override
        protected String doInBackground(String... strings) {
            String date = NetUli.getDate(strings[0]);
            return date;
        }
    }.execute(StringURl);
}

}