Retry request sample.

Author: Noor Dawod

sample/src/main/java/com/loopj/android/http/sample/RetryRequestSample.java

@@ -0,0 +1,76 @@
+/*
+    Android Asynchronous Http Client Sample
+    Copyright (c) 2014 Marek Sebera <[email protected]>
+    http://loopj.com
+
+    Licensed under the Apache License, Version 2.0 (the "License");
+    you may not use this file except in compliance with the License.
+    You may obtain a copy of the License at
+
+        http://www.apache.org/licenses/LICENSE-2.0
+
+    Unless required by applicable law or agreed to in writing, software
+    distributed under the License is distributed on an "AS IS" BASIS,
+    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+    See the License for the specific language governing permissions and
+    limitations under the License.
+*/
+
+package com.loopj.android.http.sample;
+
+import android.os.Bundle;
+import android.widget.Toast;
+
+import com.loopj.android.http.AsyncHttpClient;
+import java.io.IOException;
+import java.net.SocketTimeoutException;
+import java.net.UnknownHostException;
+
+import org.apache.http.conn.ConnectTimeoutException;
+import org.apache.http.conn.ConnectionPoolTimeoutException;
+
+public class RetryRequestSample extends GetSample {
+
+    private static boolean wasToastShown;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+
+        // The following exceptions will be whitelisted, i.e.: When an exception
+        // of this type is raised, the request will be retried.
+        AsyncHttpClient.allowRetryExceptionClass(IOException.class);
+        AsyncHttpClient.allowRetryExceptionClass(SocketTimeoutException.class);
+        AsyncHttpClient.allowRetryExceptionClass(ConnectTimeoutException.class);
+
+        // The following exceptions will be blacklisted, i.e.: When an exception
+        // of this type is raised, the request will not be retried and it will
+        // fail immediately.
+        AsyncHttpClient.blockRetryExceptionClass(UnknownHostException.class);
+        AsyncHttpClient.blockRetryExceptionClass(ConnectionPoolTimeoutException.class);
+    }
+
+    @Override
+    protected void onResume() {
+        super.onResume();
+
+        if(!wasToastShown) {
+            wasToastShown = true;
+            Toast.makeText(
+                this,
+                "Exceptions' whitelist and blacklist updated\nSee RetryRequestSample.java for details",
+                Toast.LENGTH_LONG
+            ).show();
+        }
+    }
+
+    @Override
+    public String getDefaultURL() {
+        return "http://httpbin.org/ip";
+    }
+
+    @Override
+    public int getSampleTitle() {
+        return R.string.title_retry_handler;
+    }
+}

sample/src/main/java/com/loopj/android/http/sample/WaypointsActivity.java

@@ -48,7 +48,8 @@ public class WaypointsActivity extends ListActivity {
         new SampleConfig(R.string.title_intent_service_sample, IntentServiceSample.class),
         new SampleConfig(R.string.title_post_files, FilesSample.class),
         new SampleConfig(R.string.title_persistent_cookies, PersistentCookiesSample.class),
-        new SampleConfig(R.string.title_custom_ca, CustomCASample.class)
+        new SampleConfig(R.string.title_custom_ca, CustomCASample.class),
+        new SampleConfig(R.string.title_retry_handler, RetryRequestSample.class)
     };
 
     @Override

sample/src/main/res/values/strings.xml

@@ -26,4 +26,5 @@
     <string name="title_redirect_302">302 Redirect handling</string>
     <string name="title_persistent_cookies">Handling persistent cookies</string>
     <string name="title_custom_ca">Custom CA Example</string>
+    <string name="title_retry_handler">Retrying requests by Exception</string>
 </resources>