Volley框架网络访问String,JsonObject,JsonArray

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.liuyazhou.myapplication">

<uses-permission android:name="android.permission.INTERNET" />

<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:supportsRtl="true"
android:theme="@style/AppTheme">

<activity android:name=".MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />

<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>

</manifest>

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context="com.example.liuyazhou.myapplication.MainActivity">

<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Hello World!"
android:id="@+id/textView" />

<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="点击"
android:id="@+id/button"
android:layout_below="@+id/textView"
android:layout_centerHorizontal="true"
android:layout_marginTop="47dp" />
</RelativeLayout>

package com.example.liuyazhou.myapplication;

import android.app.Activity;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;

import com.android.volley.Request;
import com.android.volley.RequestQueue;
import com.android.volley.Response;
import com.android.volley.VolleyError;
import com.android.volley.VolleyLog;
import com.android.volley.toolbox.JsonArrayRequest;
import com.android.volley.toolbox.JsonObjectRequest;
import com.android.volley.toolbox.StringRequest;
import com.android.volley.toolbox.Volley;

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

public class MainActivity extends Activity {
private Button button1;
private TextView textView1;
private String urlJsonObj = "http://api.androidhive.info/volley/person_object.json";
private String urlJsonArry = "http://api.androidhive.info/volley/person_array.json";
private static String TAG = MainActivity.class.getSimpleName();
private String jsonResponse;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
button1 = (Button) findViewById(R.id.button);
textView1 = (TextView) findViewById(R.id.textView);
button1.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
textView1.setText("你好，第一个Android程序！");
fun();
funJsonObjectRequest();
funJsonArrayRequest();
}
});
}//onCreate

public void fun() {
RequestQueue mQueue = Volley.newRequestQueue(MainActivity.this);
/////cityname需要是转码后的，不能用中文
StringRequest stringRequest = new StringRequest("http://op.juhe.cn/onebox/weather/query?cityname=%E8%92%99%E5%9F%8E&dtype=&key=*****7942cbdcff19a08001",
new Response.Listener<String>() {///需要自己申请key，这里随便一个网址都行，
@Override
public void onResponse(String response) {
Log.i("成功Listener-TAG", response);
}
},
new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
Log.e("失败ErrorListener-TAG", error.getMessage(), error);
}
});
mQueue.add(stringRequest);
}

public void funJsonObjectRequest() {
RequestQueue mQueue = Volley.newRequestQueue(MainActivity.this);
JsonObjectRequest jsonObjReq = new JsonObjectRequest(Request.Method.GET,
urlJsonObj, null, new Response.Listener<JSONObject>() {
@Override
public void onResponse(JSONObject response) {
Log.i("JsonObject-成功-TAG", response.toString());
try {
String   name = response.getString("name");
String email = response.getString("email");
JSONObject phone = response.getJSONObject("phone");
String home = phone.getString("home");
String mobile = phone.getString("mobile");
jsonResponse = "";
jsonResponse += "Name: " + name + "\n";
jsonResponse += "Email: " + email + "\n";
jsonResponse += "Home: " + home + "\n";
jsonResponse += "Mobile: " + mobile + "\n";
Log.i("JsonObject-成功:", jsonResponse);
} catch (JSONException e) {
e.printStackTrace();
Toast.makeText(getApplicationContext(),
"Error: " + e.getMessage(),
Toast.LENGTH_LONG).show();
}
}
}, new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
VolleyLog.d(TAG, "Error: " + error.getMessage());
Toast.makeText(getApplicationContext(),
error.getMessage(), Toast.LENGTH_SHORT).show();
}
});
mQueue.add(jsonObjReq);
}//funJson

public void funJsonArrayRequest() {
RequestQueue mQueue = Volley.newRequestQueue(MainActivity.this);
JsonArrayRequest jsonArrayReq = new JsonArrayRequest(urlJsonArry,
new Response.Listener<JSONArray>() {
@Override
public void onResponse(JSONArray response) {
Log.d(TAG, response.toString());
try {
jsonResponse = "";
for (int i = 0; i < response.length(); i++) {
JSONObject person = (JSONObject) response.get(i);
String name = person.getString("name");
String email = person.getString("email");
JSONObject phone = person.getJSONObject("phone");
String home = phone.getString("home");
String mobile = phone.getString("mobile");

jsonResponse += "Name: " + name + "\n";
jsonResponse += "Email: " + email + "\n";
jsonResponse += "Home: " + home + "\n";
jsonResponse += "Mobile: " + mobile + "\n";

}
Log.i("JsonArray-成功:", jsonResponse);
} catch (JSONException e) {
e.printStackTrace();
Toast.makeText(getApplicationContext(),
"Error: " + e.getMessage(),
Toast.LENGTH_LONG).show();
}
}
}, new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
VolleyLog.d(TAG, "Error: " + error.getMessage());
Toast.makeText(getApplicationContext(),
error.getMessage(), Toast.LENGTH_SHORT).show();

}
});
mQueue.add(jsonArrayReq);
}
}//MainActivity