adamrocker さんの volley サンプル https://github.com/adamrocker/volley を元に OkHttp を組み込んで SPDY でアクセスするための差分。 変更後のものは https://github.com/zaki50/volley/tree/with-OkHttp にあります。

volley_with_spdy.diff

diff --git a/VolleySample/libs/okhttp-1.0.2.jar b/VolleySample/libs/okhttp-1.0.2.jar
new file mode 100644
index 0000000..7592cdf
Binary files /dev/null and b/VolleySample/libs/okhttp-1.0.2.jar differ
diff --git a/VolleySample/libs/volley.jar b/VolleySample/libs/volley.jar
index 31c143c..762e993 100644
Binary files a/VolleySample/libs/volley.jar and b/VolleySample/libs/volley.jar differ
diff --git a/VolleySample/src/com/adamrocker/volleysample/MainActivity.java b/VolleySample/src/com/adamrocker/volleysample/MainActivity.java
index b2c1dd5..c2118c5 100644
--- a/VolleySample/src/com/adamrocker/volleysample/MainActivity.java
+++ b/VolleySample/src/com/adamrocker/volleysample/MainActivity.java
@@ -3,12 +3,18 @@ package com.adamrocker.volleysample;
 import org.json.JSONArray;
 import org.json.JSONException;
 import org.json.JSONObject;
+
+import java.io.IOException;
+import java.net.HttpURLConnection;
+import java.net.URL;
+
 import com.android.volley.Request.Method;
 import com.android.volley.RequestQueue;
 import com.android.volley.Response;
 import com.android.volley.Response.ErrorListener;
 import com.android.volley.Response.Listener;
 import com.android.volley.VolleyError;
+import com.android.volley.toolbox.HurlStack;
 import com.android.volley.toolbox.ImageRequest;
 import com.android.volley.toolbox.JsonObjectRequest;
 import com.android.volley.toolbox.Volley;
@@ -16,8 +22,9 @@ import com.actionbarsherlock.app.SherlockActivity;
 import com.actionbarsherlock.view.Menu;
 import com.actionbarsherlock.view.MenuItem;
 import com.adamrocker.volleysample.R;
+import com.squareup.okhttp.OkHttpClient;
+
 import android.os.Bundle;
-import android.app.Activity;
 import android.content.Context;
 import android.graphics.Bitmap;
 import android.graphics.Bitmap.Config;
@@ -36,7 +43,6 @@ import android.widget.Toast;
 
 public class MainActivity extends SherlockActivity {
 
-    private static final String INSTAGRAM_CLIENT_ID = "2954ec574e53454abefc82073af058c2";
     private static final Object TAG = new Object();
     private static final String LOG = "VOLLEY-SAMPLE";
     private RequestQueue mVolley;
@@ -69,6 +75,15 @@ public class MainActivity extends SherlockActivity {
         }
     }
 
+    static class OkHttpStack extends HurlStack {
+        private final OkHttpClient mClient = new OkHttpClient();
+
+        @Override
+        protected HttpURLConnection createConnection(URL url) throws IOException {
+            return mClient.open(url);
+        }
+    }
+
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
@@ -76,15 +91,14 @@ public class MainActivity extends SherlockActivity {
         setContentView(R.layout.photo_stream);
 
         mBase = (LinearLayout) findViewById(R.id.base);
-        mVolley = Volley.newRequestQueue(getApplicationContext());// thread
-                                                                  // pool(4)
+        mVolley = Volley.newRequestQueue(getApplicationContext(), new OkHttpStack()); // thread
+                                                                                      // pool(4)
         startLoadingAnim();
         refreshDatas();
     }
 
     private void refreshDatas() {
-        String url = "https://api.instagram.com/v1/media/popular?client_id="
-                + INSTAGRAM_CLIENT_ID;
+        String url = "https://picasaweb.google.com/data/feed/api/user/117758246455073005073/albumid/5881235953426455569?alt=json";
         JsonObjectRequest jsonRequet = new JsonObjectRequest(Method.GET, url,
                 null, new Listener<JSONObject>() {
                     public void onResponse(JSONObject result) {
@@ -108,8 +122,7 @@ public class MainActivity extends SherlockActivity {
     }
 
     private int parseJson(JSONObject root) throws JSONException {
-        int code = root.getJSONObject("meta").getInt("code");
-        if (code == 200) {
+        if (true) {
             int[] resTexts = { R.id.photo_text1, R.id.photo_text2,
                     R.id.photo_text3, R.id.photo_text4, R.id.photo_text5,
                     R.id.photo_text6 };
@@ -118,7 +131,7 @@ public class MainActivity extends SherlockActivity {
             int resIndex = 0;
             LayoutInflater inf = (LayoutInflater) getSystemService(LAYOUT_INFLATER_SERVICE);
 
-            JSONArray arr = root.getJSONArray("data");
+            JSONArray arr = root.getJSONObject("feed").getJSONArray("entry");
             final int len = arr.length();
             RelativeLayout rl = (RelativeLayout) inf.inflate(
                     R.layout.photo_item, null);
@@ -127,9 +140,9 @@ public class MainActivity extends SherlockActivity {
                 JSONObject json = arr.getJSONObject(i);
                 String text = null;
                 try {
-                    JSONObject caption = json.getJSONObject("caption");
+                    JSONObject caption = json.getJSONObject("title");
                     if (caption != null) {
-                        text = caption.getString("text");
+                        text = caption.getString("$t");
                     } else {
                         text = "...";
                     }
@@ -138,8 +151,7 @@ public class MainActivity extends SherlockActivity {
                     Log.e(LOG, json.toString());
                     text = "...";
                 }
-                String imgUrl = json.getJSONObject("images")
-                        .getJSONObject("low_resolution").getString("url");
+                String imgUrl = json.getJSONObject("content").getString("src");
 
                 ImageView iv = (ImageView) rl.findViewById(resImgs[resIndex]);
                 if (iv == null) {
@@ -179,7 +191,7 @@ public class MainActivity extends SherlockActivity {
                 mVolley.add(request);
             }
         }
-        return code;
+        return 200;
     }
 
     public void onStop() {