Android原生方式解析Json，Gson三方架構方式解析Json

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package com.example.administrator.test.Fragment.Login;import android.support.v4.media.VolumeProviderCompat;import android.support.v7.app.AppCompatActivity;import android.os.Bundle;import android.view.View;import android.widget.EditText;import com.example.administrator.test.R;import com.google.gson.Gson;import com.google.gson.JsonArray;import com.google.gson.reflect.TypeToken;import org.json.JSONArray;import org.json.JSONException;import org.json.JSONObject;import java.util.List;public class TestActivity4 extends AppCompatActivity {    EditText et_3;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_test4);        et_3=(EditText)findViewById(R.id.et_3);    }    //原生    public void bt1_OnClick(View v) throws JSONException {        String strJson = "{\"id\":1,\"name\":\"大蝦\", " +                "\"price\":12.3, " +                "\"imagePath\":\"http://192.168.10.165:8080/L05_Server/images/f1.jpg\"}";        //從Json字串轉成對象        JSONObject jo = new JSONObject(strJson);        int id=jo.getInt("id");        String name=jo.getString("name");        double price=jo.getDouble("price");        String imagePath=jo.getString("imagePath");        ShopInfo shopInfo=new ShopInfo(id,name,price,imagePath);        et_3.setText(shopInfo.toString() );    }    //Gson    public void bt5_OnClick(View v)    {        //Gson方式吧Json字串轉成對象        String strJson = "{\"id\":1,\"name\":\"大蝦\", " +                "\"price\":12.3, " +                "\"imagePath\":\"http://192.168.10.165:8080/L05_Server/images/f1.jpg\"}";        ShopInfo shopInfo= new Gson().fromJson(strJson,ShopInfo.class);//反射        et_3.setText(shopInfo.toString());    }    public void bt2_OnClick(View v)    {        String strJson = "{\"id\":1,\"name\":\"大蝦\", " +                "\"price\":12.3, " +                "\"imagePath\":\"http://192.168.10.165:8080/L05_Server/images/f1.jpg\"}";       ShopInfo shopInfo= new Gson().fromJson(strJson,ShopInfo.class);//反射        et_3.setText(shopInfo.toString());        //把對象轉為Json格式字串        shopInfo.setName("龍蝦");        String str1=new Gson().toJson(shopInfo);        et_3.setText(str1);    }    //原生方式把Json字串轉成集合    public void bt3_OnClick(View v)    {        //轉集合        String strjson="[{\"id\":1,\"name\":\"大蝦1\",\"price\":12.3," +                           " \"imagePath\":\"http://192.168.10.165:8080/f1.jpg\"}," +                           "{\"id\":2, \"name\":\"大蝦2\", \"price\":12.5, " +                            "\"imagePath\":\"http://192.168.10.165:8080/f2.jpg\"}]";        try {            JSONArray jsonArray=new JSONArray(strjson);            String str="";            for (int i=0;i<jsonArray.length();i++)            {                JSONObject jo=jsonArray.getJSONObject(i);                int id=jo.getInt("id");                String name=jo.getString("name");                double price=jo.getDouble("price");                String imagePath=jo.getString("imagePath");                ShopInfo shopInfo=new ShopInfo(id,name,price,imagePath);                str+=shopInfo.toString();                et_3.setText( str );            }        }catch (Exception e)        {            e.printStackTrace();        }    }    //Gson把Json字串轉成集合    public void bt4_OnClick(View v)    {        String strjson="[{\"id\":1,\"name\":\"大蝦1\",\"price\":12.3," +                " \"imagePath\":\"http://192.168.10.165:8080/f1.jpg\"}," +                "{\"id\":2, \"name\":\"大蝦2\", \"price\":12.5, " +                "\"imagePath\":\"http://192.168.10.165:8080/f2.jpg\"}]";        List<ShopInfo> list=new Gson().fromJson( strjson,new TypeToken<List<ShopInfo>>(){}.getType());        et_3.setText( list.toString() );    }    //Gson把集合轉成Json字串    public  void bt6_OnClick(View v)    {        String strjson="[{\"id\":1,\"name\":\"大蝦1\",\"price\":12.3," +                " \"imagePath\":\"http://192.168.10.165:8080/f1.jpg\"}," +                "{\"id\":2, \"name\":\"大蝦2\", \"price\":12.5, " +                "\"imagePath\":\"http://192.168.10.165:8080/f2.jpg\"}]";        List<ShopInfo> list=new Gson().fromJson( strjson,new TypeToken<List<ShopInfo>>(){}.getType());        list.add( new ShopInfo(3,"龍蝦3",123.45,"lalallalalal"));        String str1=new Gson().toJson( list );        et_3.setText( str1 );    }}

<?xml version="1.0" encoding="utf-8"?><LinearLayout    xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:orientation="vertical">    <Button        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:text="Android原生方式把Json字串轉成對象"        android:onClick="bt1_OnClick"        />    <Button        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:text="Gson方式把Json字串轉成對象"        android:onClick="bt5_OnClick"        />    <Button    android:layout_width="match_parent"    android:layout_height="wrap_content"    android:text="Gson方式把對象轉成Json格式"    android:onClick="bt2_OnClick"    />    <Button        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:text="Android原生把Json格式數組轉成對象集合"        android:onClick="bt3_OnClick"        />    <Button    android:layout_width="match_parent"    android:layout_height="wrap_content"    android:text="Gson方式把Json格式數組轉成對象集合"    android:onClick="bt4_OnClick"    />    <Button        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:text="Gson方式把對象集合轉成Json格式"        android:onClick="bt6_OnClick"        />    <EditText        android:layout_width="match_parent"        android:layout_height="200dp"        android:id="@+id/et_3"/></LinearLayout>

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Android原生方式解析Json，Gson三方架構方式解析Json