Android实战--解析稍复杂JSON数据DEMO

原创

徐的张 2022-11-11 12:55:13 博主文章分类：Android ©著作权

文章标签 Android JSON json android java 文章分类 运维

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废话不多说，直接上代码，布局文件：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical" >

    <TextView
        android:id="@+id/mytext"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content" />

</LinearLayout>

.java:

package org.lxh.demo;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;

import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;

import android.app.Activity;
import android.os.Bundle;
import android.widget.TextView;

public class Hello extends Activity {
  private TextView textView;

  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState); // 生命周期方法
    super.setContentView(R.layout.main); // 设置要使用的布局管理器
    this.textView = (TextView) findViewById(R.id.mytext);
    String str = "{\"memberdata\":[{\"id\":1,\"name\":\"yayun\",\"age\":25},"
        + "{\"id\":2,\"name\":\"qiangge\",\"age\":26}],\"company\":\"NJUPT\"}";
    StringBuffer buffer = new StringBuffer();
    Map<String, Object> resultMap = this.parseJson(str);
    buffer.append("单位名称：" + resultMap.get("company") + "\n");
    @SuppressWarnings("unchecked")
    List<Map<String, Object>> all = (List<Map<String, Object>>) resultMap
        .get("memberdata");// 强制转换
    Iterator<Map<String, Object>> iter = all.iterator();
    while (iter.hasNext()) {
      Map<String, Object> map = iter.next();
      buffer.append("ID:" + map.get("id") + "姓名：" + map.get("name")
          + "\n");

    }
    this.textView.setText(buffer);

  }

  private Map<String, Object> parseJson(String data) {
    Map<String, Object> allMap = new HashMap<String, Object>();
    try {
      JSONObject allDataJsonObject = new JSONObject(data);
      allMap.put("company", allDataJsonObject.getString("company"));
      JSONArray array = allDataJsonObject.getJSONArray("memberdata");
      List<Map<String, Object>> all = new ArrayList<Map<String, Object>>();
      for (int i = 0; i < array.length(); i++) {
        Map<String, Object> map = new HashMap<String, Object>();
        JSONObject jsonObject = array.getJSONObject(i);
        map.put("id", jsonObject.getInt("id"));
        map.put("name", jsonObject.getString("name"));
        map.put("age", jsonObject.getInt("age"));
        all.add(map);
      }
      allMap.put("memberdata", all);// 将List<Map<String,
                      // Object>>装入Map<String, Object>
    } catch (JSONException e) {
      // TODO Auto-generated catch block
      e.printStackTrace();
    }

    return allMap;
  }
}