【Android】解析Json数据

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Json数据："{\"UserID\":\"Allen\",\"Dep\":IT,\"QQ\":\"969661314\"}"

通过如下代码，将此Json数据转换为Json对象，类似数组一样，然后通过字段名获取每一个值：

package com.example.androidjson;

import org.json.JSONException;

import org.json.JSONObject;

import android.support.v7.app.ActionBarActivity;

import android.os.Bundle;

import android.view.Menu;

import android.view.MenuItem;

import android.view.View;

import android.view.View.OnClickListener;

import android.widget.Button;

import android.widget.TextView;

public class MainActivity extends ActionBarActivity {

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);

        Button btn=(Button)findViewById(R.id.btnJson);

        btn.setOnClickListener(new OnClickListener() {

            @Override

            public void onClick(View arg0) {

                // TODO Auto-generated method stub

                 String myjson="{\"UserID\":\"Allen\",\"Dep\":IT,\"QQ\":\"969661314\"}";

                 try {

                    JSONObject json=new JSONObject(myjson);

                    String strUserID=json.getString("UserID");

                    String strDep=json.getString("Dep");

                    String strQQ=json.getString("QQ");

                    TextView txtUserID=(TextView)findViewById(R.id.textView1);

                    TextView txtDep=(TextView)findViewById(R.id.textView2);

                    TextView txtQQ=(TextView)findViewById(R.id.textView3);

                    txtUserID.setText(strUserID);

                    txtDep.setText(strDep);

                    txtQQ.setText(strQQ);

                } catch (JSONException e) {

                    // TODO Auto-generated catch block

                    e.printStackTrace();

                }

            }

        });

    }

    @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;

    }

    @Override

    public boolean onOptionsItemSelected(MenuItem item) {

        // Handle action bar item clicks here. The action bar will

        // automatically handle clicks on the Home/Up button, so long

        // as you specify a parent activity in AndroidManifest.xml.

        int id = item.getItemId();

        if (id == R.id.action_settings) {

            return true;

        }

        return super.onOptionsItemSelected(item);

    }

}