Added jsonUtil and Pair android-volley

modules/swagger-codegen/src/main/java/io/swagger/codegen/languages/AndroidVolleyClientCodegen.java

@@ -239,12 +239,12 @@ public class AndroidVolleyClientCodegen extends DefaultCodegen implements Codege
                 (sourceFolder + File.separator + invokerPackage).replace(".", java.io.File.separator), "ApiInvoker.java"));
 //        supportingFiles.add(new SupportingFile("httpPatch.mustache",
 //                (sourceFolder + File.separator + invokerPackage).replace(".", java.io.File.separator), "HttpPatch.java"));
-//        supportingFiles.add(new SupportingFile("jsonUtil.mustache",
+        supportingFiles.add(new SupportingFile("jsonUtil.mustache",
-//                (sourceFolder + File.separator + invokerPackage).replace(".", java.io.File.separator), "JsonUtil.java"));
+                (sourceFolder + File.separator + invokerPackage).replace(".", java.io.File.separator), "JsonUtil.java"));
 //        supportingFiles.add(new SupportingFile("apiException.mustache",
 //                (sourceFolder + File.separator + invokerPackage).replace(".", java.io.File.separator), "ApiException.java"));
-//        supportingFiles.add(new SupportingFile("Pair.mustache",
+        supportingFiles.add(new SupportingFile("Pair.mustache",
-//                (sourceFolder + File.separator + invokerPackage).replace(".", java.io.File.separator), "Pair.java"));
+                (sourceFolder + File.separator + invokerPackage).replace(".", java.io.File.separator), "Pair.java"));
         supportingFiles.add(new SupportingFile("getrequest.mustache",
                 (sourceFolder + File.separator + requestPackage).replace(".", java.io.File.separator), "GetRequest.java"));
     }

modules/swagger-codegen/src/main/resources/android-volley/Pair.mustache

@@ -0,0 +1,38 @@
+package {{invokerPackage}};
+
+public class Pair {
+    private String name = "";
+    private String value = "";
+
+    public Pair(String name, String value) {
+        setName(name);
+        setValue(value);
+    }
+
+    private void setName(String name) {
+        if (!isValidString(name)) return;
+
+        this.name = name;
+    }
+
+    private void setValue(String value) {
+        if (!isValidString(value)) return;
+
+        this.value = value;
+    }
+
+    public String getName() {
+        return this.name;
+    }
+
+    public String getValue() {
+        return this.value;
+    }
+
+    private boolean isValidString(String arg) {
+        if (arg == null) return false;
+        if (arg.trim().isEmpty()) return false;
+
+        return true;
+    }
+}

modules/swagger-codegen/src/main/resources/android-volley/jsonUtil.mustache

@@ -0,0 +1,55 @@
+package {{invokerPackage}};
+
+import com.google.gson.Gson;
+import com.google.gson.GsonBuilder;
+import com.google.gson.reflect.TypeToken;
+import java.lang.reflect.Type;
+import java.util.List;
+import {{modelPackage}}.*;
+
+public class JsonUtil {
+  public static GsonBuilder gsonBuilder;
+
+  static {
+    gsonBuilder = new GsonBuilder();
+    gsonBuilder.serializeNulls();
+    gsonBuilder.setDateFormat("yyyy-MM-dd'T'HH:mm:ss.SSSZ");
+  }
+
+  public static Gson getGson() {
+    return gsonBuilder.create();
+  }
+
+  public static String serialize(Object obj){
+    return getGson().toJson(obj);
+  }
+
+  public static <T> T deserializeToList(String jsonString, Class cls){
+    return getGson().fromJson(jsonString, getListTypeForDeserialization(cls));
+  }
+
+  public static <T> T deserializeToObject(String jsonString, Class cls){
+    return getGson().fromJson(jsonString, getTypeForDeserialization(cls));
+  }
+
+  public static Type getListTypeForDeserialization(Class cls) {
+    String className = cls.getSimpleName();
+    {{#models}}{{#model}}
+    if ("{{classname}}".equalsIgnoreCase(className)) {
+      return new TypeToken<List<{{classname}}>>(){}.getType();
+    }
+    {{/model}}{{/models}}
+    return new TypeToken<List<Object>>(){}.getType();
+  }
+
+  public static Type getTypeForDeserialization(Class cls) {
+    String className = cls.getSimpleName();
+    {{#models}}{{#model}}
+    if ("{{classname}}".equalsIgnoreCase(className)) {
+      return new TypeToken<{{classname}}>(){}.getType();
+    }
+    {{/model}}{{/models}}
+    return new TypeToken<Object>(){}.getType();
+  }
+
+};