Android中post请求AsyncTask延时

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private String path="http://qhb.2dyt.com/Bwei/news?page=1&type=7&postkey=ad1AK";private String s;private List<BweiBean.ListEntity> list;private ListView mylist;@Overrideprotected void onCreate(Bundle savedInstanceState) {    super.onCreate(savedInstanceState);    setContentView(R.layout.activity_main);    //找控件    mylist = (ListView) findViewById(R.id.mylist);    //创建AdyncTask    AsyncTask<Void, Void, String> Asynctask = new AsyncTask<Void, Void, String>() {       //此方法充当子线程        @Override        protected String doInBackground(Void... voids) {            try {                //创建URL把接口放进来                URL url = new URL(path);                //得到URL对象的值                HttpURLConnection connection = (HttpURLConnection) url.openConnection();               //请求方式                connection.setRequestMethod("GET");                //链接超时时间                connection.setConnectTimeout(8000);                //请求码判断                if(connection.getResponseCode() == 200){                    //得到InputStream                    InputStream inputStream = connection.getInputStream();                    //字节流转换成字符流                    ByteArrayOutputStream baos = new ByteArrayOutputStream();                    int len = 0;                    byte[] buffer = new byte[1024];                    while((len = inputStream.read(buffer)) != -1){                        baos.write(buffer,0,len);                    }                    s = baos.toString();                }                    return s;            } catch (Exception e) {                e.printStackTrace();            }            return null;        }        //此方法充当主线程        @Override        protected void onPostExecute(String s) {            //Gson解析            Gson gson = new Gson();            //Gson解析            BweiBean bweiBean = gson.fromJson(s, BweiBean.class);            //把值赋给List            list=bweiBean.list;            //适配器            MyBase adapter = new MyBase(MainActivity.this,list);             mylist.setAdapter(adapter);            super.onPostExecute(s);        }    };    Asynctask.execute();    //ListView条目点击    mylist.setOnItemClickListener(new AdapterView.OnItemClickListener() {        @Override        public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) {           //跳转传值            Intent intent = new Intent(MainActivity.this,Main2Activity.class);            intent.putExtra("title",list.get(i).title);            intent.putExtra("data",list.get(i).date);            intent.putExtra("pic",list.get(i).pic);            startActivity(intent);        }    });}
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@Overrideprotected void onCreate(Bundle savedInstanceState) {    super.onCreate(savedInstanceState);    setContentView(R.layout.activity_main2);    //接收传过来的值    String title = getIntent().getStringExtra("title");    String data = getIntent().getStringExtra("data");    String pic = getIntent().getStringExtra("pic");    //找控件    TextView text1= (TextView) findViewById(R.id.text1);    TextView text3= (TextView) findViewById(R.id.text3);   ImageView image1= (ImageView) findViewById(R.id.image1);    //赋值    text1.setText("title："+title);    text3.setText("data："+data);    setImage(pic,Main2Activity.this,image1);}public static void setImage(String url , Context context, ImageView imageView){        ImageLoaderConfiguration config = new ImageLoaderConfiguration.Builder(context).build();        ImageLoader imageLoader = ImageLoader.getInstance();        imageLoader.init(config);        DisplayImageOptions diosplay =new DisplayImageOptions.Builder()                .showImageOnLoading(R.mipmap.ic_launcher)                .showImageForEmptyUri(R.mipmap.ic_launcher)                .showImageOnFail(R.mipmap.ic_launcher)                .cacheInMemory(true)                .cacheOnDisk(true)                .imageScaleType(ImageScaleType.IN_SAMPLE_INT)                .bitmapConfig(Bitmap.Config.RGB_565)                .displayer(new RoundedBitmapDisplayer(90))                .build();        imageLoader.displayImage(url,imageView,diosplay);    }
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public int ret_code;public String ret_msg;public List<ListEntity> list;public static class ListEntity {    /**     * date : 111     * id : 1     * pic : http://p1.pstatp.com/large/22c90001cf8b5388ce33     * title :     他“秘书圈”的人数规模，赶上了周永康     * type : 1     */    public String date;    public int id;    public String pic;    public String title;    public int type;}
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public class MyBase extends BaseAdapter {    private Context context;    private List<BweiBean.ListEntity> list;    public MyBase(Context context, List<BweiBean.ListEntity> list) {        this.context = context;        this.list = list;    }    @Override    public int getCount() {        return list.size();    }    @Override    public Object getItem(int i) {        return null;    }    @Override    public long getItemId(int i) {        return 0;    }    @Override    public View getView(int i, View view, ViewGroup viewGroup) {        ViewHolder holder;        if(view == null){            holder = new ViewHolder();            view = View.inflate(context,R.layout.item,null);            holder.image_view= (ImageView) view.findViewById(R.id.image_view);            holder.text_view1= (TextView) view.findViewById(R.id.text_view1);            view.setTag(holder);        }else{            holder= (ViewHolder) view.getTag();        }        holder.text_view1.setText("title:"+list.get(i).title+"\n"+"data:"+list.get(i).date);        setImage(list.get(i).pic,context,holder.image_view);        return view;    }    //创建ImageLoader    public static void setImage(String url , Context context,ImageView imageView){            ImageLoaderConfiguration config = new ImageLoaderConfiguration.Builder(context).build();            ImageLoader imageLoader = ImageLoader.getInstance();            imageLoader.init(config);            DisplayImageOptions diosplay =new DisplayImageOptions.Builder()                    .showImageOnLoading(R.mipmap.ic_launcher)                    .showImageForEmptyUri(R.mipmap.ic_launcher)                    .showImageOnFail(R.mipmap.ic_launcher)                    .cacheInMemory(true)                    .cacheOnDisk(true)                    .imageScaleType(ImageScaleType.IN_SAMPLE_INT)                    .bitmapConfig(Bitmap.Config.RGB_565)                    .build();            imageLoader.displayImage(url,imageView,diosplay);        }    class ViewHolder{        ImageView image_view;        TextView text_view1;    }
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