Android网络开发之Volley--Volley基本用法StringRequest(一)

1、StringRequest用法

主要分为3步：

(1)、实例化一个RequestQueue对象

(2)、设置StringRequest对象参数，并将StringRequest对象加入RequestQueue队列

(3)、执行start()方法

public class StringActivity extends Activity {
    private TextView mTvShow;
    
    private RequestQueue requestQueue;
    
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        // TODO Auto-generated method stub
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_string);
        
        initView();
    }
    
    public void initView(){
        mTvShow = (TextView) findViewById(R.id.tv_string);
        
        requestQueue = Volley.newRequestQueue(getBaseContext()); 
        requestQueue.add(stringRequest);
        requestQueue.start();
    }
    
    /** StringRequest请求，默认为GET*/
    public StringRequest stringRequest = new StringRequest("http://www.baidu.com", new Listener<String>() {

        @Override
        public void onResponse(String response) {
            // TODO Auto-generated method stub
            Toast.makeText(getBaseContext(), response, Toast.LENGTH_SHORT).show();
        }
        
    }, new ErrorListener(){

        @Override
        public void onErrorResponse(VolleyError error) {
            // TODO Auto-generated method stub
            Log.e("StringRequest", error.toString());
        }
        
    });
    
    /** StringRequest的Post请求，但是需要重写匿名类getParams()*/
    StringRequest stringRequest1 = new StringRequest(Method.POST, "http://www.baidu.com",  new Listener<String>() {

        @Override
        public void onResponse(String response) {
            // TODO Auto-generated method stub
            mTvShow.setText(response);
        }
    }, new ErrorListener(){

        @Override
        public void onErrorResponse(VolleyError error) {
            // TODO Auto-generated method stub
            Log.e("StringRequest", error.toString());
        }
        
    }){
        // 需要重写获取参数的函数,可以向服务器提交参数
        protected Map<String,String> getParams() throws AuthFailureError {
            Map<String, String> map = new HashMap<String, String>();
            map.put("wd", "开始吗");
            map.put("rsv_spt", "不开始啦");
            return map;
        };
    };
}

2、不要忘记加入网络访问权限

<uses-permission android:name="android.permission.INTERNET"/>

3、参考博文：

http://blog.csdn.net/guolin_blog/article/details/17482095/