AsyncHttpClient对json的读取操作

package com.example.astest;

 

import org.json.JSONArray;

import org.json.JSONObject;

 

import android.app.Activity;

import android.os.Bundle;

import android.os.StrictMode;

import android.view.Menu;

import android.view.View;

import android.view.View.OnClickListener;

import android.widget.Button;

import android.widget.Toast;

 

import com.loopj.android.http.AsyncHttpClient;

import com.loopj.android.http.AsyncHttpResponseHandler;

import com.loopj.android.http.JsonHttpResponseHandler;

import com.loopj.android.http.RequestParams;

 

public class MainActivity extends Activity {

 

    private RequestParams params;

 

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        StrictMode.setThreadPolicy(new StrictMode.ThreadPolicy.Builder()

                .detectDiskReads().detectDiskWrites().detectNetwork()

                .penaltyLog().build());

        StrictMode.setVmPolicy(new StrictMode.VmPolicy.Builder()

                .detectLeakedSqlLiteObjects().detectLeakedClosableObjects()

                .penaltyLog().penaltyDeath().build());

        setContentView(R.layout.activity_main);

 

        Button button1 = (Button) findViewById(R.id.button1);

        Button button2 = (Button) findViewById(R.id.button2);

 

        button1.setOnClickListener(new OnClickListener() {

 

            @Override

            public void onClick(View v) {

                // TODO Auto-generated method stub

                requestjsonarray();

            }

        });

 

        button2.setOnClickListener(new OnClickListener() {

 

            @Override

            public void onClick(View v) {

                // TODO Auto-generated method stub

                requeststring();

            }

        });

    }

 

    /*

     * 获得json对象

     */

    public void requestjson() {

        AsyncHttpClient client = new AsyncHttpClient();

        params = new RequestParams();

        params.put("quest", "login");

 

        client.post("http://172.198.1.50/remote/test.ashx", params,

                new JsonHttpResponseHandler() {

                    @Override

                    public void onSuccess(JSONObject response) {

                        try {

                            Toast.makeText(MainActivity.this,

                                    response.getString("result"),

                                    Toast.LENGTH_LONG).show();

                        } catch (Exception e) {

                            e.printStackTrace();

                            Toast.makeText(MainActivity.this, "ddd",

                                    Toast.LENGTH_LONG).show();

                        }

                    }

                });

 

    }

 

    /*

     * 获得json数组 原json数组对象 {"result": "yes","people": [{"name":

     * "ligang"},{"name": "limei"},{"name": "xiaoqiang"}]}

     * 我要查的是people，再把people下面的数组刷出来

     */

    public void requestjsonarray() {

        AsyncHttpClient client = new AsyncHttpClient();

        params = new RequestParams();

        params.put("quest", "fuck");

        client.post("http://172.198.1.50/remote/test.ashx", params,

                new JsonHttpResponseHandler() {

                    @Override

                    public void onSuccess(JSONObject response) {

                        try {

                            JSONArray array = response.getJSONArray("people");

                            StringBuilder stringBuilder = new StringBuilder();

                            for (int i = 0; i < array.length(); i++) {

                                stringBuilder.append(array.getJSONObject(i)

                                        .getString("name"));

                            }

 

                            Toast.makeText(MainActivity.this,

                                    stringBuilder.toString(), Toast.LENGTH_LONG)

                                    .show();

                        } catch (Exception e) {

                            e.printStackTrace();

                            Toast.makeText(MainActivity.this, "ddd",

                                    Toast.LENGTH_LONG).show();

                        }

                    }

                });

 

    }

 

    /*

     * 获得字符串

     */

    public void requeststring() {

 

        AsyncHttpClient client = new AsyncHttpClient();

        params = new RequestParams();

        params.put("quest", "fuck");

 

        client.post("http://172.198.1.50/remote/test.ashx", params,

                new AsyncHttpResponseHandler() {

                    @Override

                    public void onSuccess(String response) {

                        try {

                            Toast.makeText(MainActivity.this,

                                    response.toString(), Toast.LENGTH_LONG)

                                    .show();

                        } catch (Exception e) {

                            e.printStackTrace();

                            Toast.makeText(MainActivity.this, "ddd",

                                    Toast.LENGTH_LONG).show();

                        }

                    }

                });

 

    }

 

    @Override

    public boolean onCreateOptionsMenu(Menu menu) {

        // Inflate the menu; this adds items to the action bar if it is present.

        getMenuInflater().inflate(R.menu.main, menu);

        return true;

    }

 

}