標籤:android json 解析 demo
今天早早的下班了,寫了一個簡單的JSON Demo,這裡總結一下。
首先是:
簡單起見,解析部分並沒有採用解析URL的方式,直接把JSON寫到String裡,邏輯比較簡單,這裡就不囉嗦了,上代碼:
package com.example.jsondemo;import org.json.JSONArray;import org.json.JSONException;import org.json.JSONObject;import android.app.Activity;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.EditText;import android.widget.TextView;import android.widget.Toast;public class Main extends Activity {// private static final String BASE_URL =// "http://zhoumushui.sinaapp.com/json/";private TextView tvMsg;private TextView tvJson;private EditText etName;private EditText etAge;private String strJson = "";private String staffInfo = "";private String strJsonRes = "";private String strMsg;private Button btnAdd;private Button btnJson;@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.main);tvMsg = (TextView) findViewById(R.id.tvMsg);tvJson = (TextView) findViewById(R.id.tvJson);etName = (EditText) findViewById(R.id.etName);etAge = (EditText) findViewById(R.id.etAge);btnAdd = (Button) findViewById(R.id.btnAdd);btnJson = (Button) findViewById(R.id.btnJson);MsgToJson(); // 封裝JsonJsonToMsg(); // 解析Json}class onClickListenerImp implements OnClickListener {@Overridepublic void onClick(View v) {// TODO Auto-generated method stubif (v == btnAdd) {if (strMsg != null && strJson.trim().length() != 0) {strMsg = strMsg + ",{name:'" + etName.getText().toString()+ "',age:" + etAge.getText().toString() + "}";} else {strMsg = "{staff:[{name:'" + etName.getText().toString()+ "',age:" + etAge.getText().toString() + "}";}Toast.makeText(Main.this, "Add Succcess!", Toast.LENGTH_SHORT).show();etAge.setText("");etName.setText("");} else if (v == btnJson) {strJsonRes = "";strJsonRes = strMsg + "]}";tvJson.setText(strJsonRes);}}}private void MsgToJson() {btnAdd.setOnClickListener(new onClickListenerImp());btnJson.setOnClickListener(new onClickListenerImp());}private void JsonToMsg() {strJson = "{staff:[{name:'Alex',age:21},{name:'Zhou',age:22},{name:'Anne',age:23}],company:'T-Chip'}";staffInfo = "未經處理資料:\n" + strJson + "\n\n解析之後:\n";try {JSONObject mJsonObject = new JSONObject(strJson);JSONArray mJsonArray = mJsonObject.getJSONArray("staff");String company = mJsonObject.getString("company");staffInfo = staffInfo + company + "共有 " + mJsonArray.length()+ " 個員工,資訊如下:\n";for (int staffCount = 0; staffCount < mJsonArray.length(); staffCount++) {// 擷取員工JSONObject staff = mJsonArray.getJSONObject(staffCount);int staffNo = staffCount + 1;staffInfo = staffInfo + "序號:" + staffNo + " 姓名: "+ staff.getString("name") + " 年齡: "+ staff.getInt("age") + "\n";}tvMsg.setText(staffInfo);} catch (JSONException e) {e.printStackTrace();} catch (Exception e) {e.printStackTrace();}}}
布局有點拖遝,其實資料封裝部分還可以利用一下解析部分的邏輯。
<?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/tvMsg" android:layout_width="fill_parent" android:layout_height="wrap_content" /> <TextView android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="==========================" /> <LinearLayout android:layout_width="fill_parent" android:layout_height="wrap_content" android:orientation="horizontal" > <EditText android:id="@+id/etName" android:layout_width="wrap_content" android:layout_height="wrap_content" android:hint="姓名" /> <EditText android:id="@+id/etAge" android:layout_width="wrap_content" android:layout_height="wrap_content" android:hint="年齡" /> <Button android:id="@+id/btnAdd" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="增加" /> <Button android:id="@+id/btnJson" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="JSON" /> </LinearLayout> <TextView android:id="@+id/tvJson" android:layout_width="fill_parent" android:layout_height="wrap_content" /></LinearLayout>
轉載請註明出處:周木水的CSDN部落格 http://blog.csdn.net/zhoumushui
我的GitHub:周木水的GitHub https://github.com/zhoumushui
Android JSON資料的解析與封裝小Demo