diff --git a/.idea/modules.xml b/.idea/modules.xml
index b0a774eb..d68bc4ee 100644
--- a/.idea/modules.xml
+++ b/.idea/modules.xml
@@ -2,8 +2,8 @@
 <project version="4">
   <component name="ProjectModuleManager">
     <modules>
-      <module fileurl="file://$PROJECT_DIR$/Aria.iml" filepath="$PROJECT_DIR$/Aria.iml" />
-      <module fileurl="file://$PROJECT_DIR$/Aria/Aria-Aria.iml" filepath="$PROJECT_DIR$/Aria/Aria-Aria.iml" />
+      <module fileurl="file://$PROJECT_DIR$/Aria/Aria.iml" filepath="$PROJECT_DIR$/Aria/Aria.iml" />
+      <module fileurl="file://$PROJECT_DIR$/AriaPrj.iml" filepath="$PROJECT_DIR$/AriaPrj.iml" />
       <module fileurl="file://$PROJECT_DIR$/app/app.iml" filepath="$PROJECT_DIR$/app/app.iml" />
     </modules>
   </component>
diff --git a/.idea/vcs.xml b/.idea/vcs.xml
deleted file mode 100644
index 35eb1ddf..00000000
--- a/.idea/vcs.xml
+++ /dev/null
@@ -1,6 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="VcsDirectoryMappings">
-    <mapping directory="" vcs="Git" />
-  </component>
-</project>
\ No newline at end of file
diff --git a/Aria/src/main/java/com/arialyy/aria/core/Aria.java b/Aria/src/main/java/com/arialyy/aria/core/Aria.java
index 4aab85f2..b3c5a6c9 100644
--- a/Aria/src/main/java/com/arialyy/aria/core/Aria.java
+++ b/Aria/src/main/java/com/arialyy/aria/core/Aria.java
@@ -28,6 +28,7 @@ import android.os.Build;
 import android.widget.PopupWindow;
 import com.arialyy.aria.core.scheduler.OnSchedulerListener;
 import com.arialyy.aria.core.task.Task;
+import com.arialyy.aria.util.CheckUtil;
 
 /**
  * Created by lyy on 2016/12/1.
@@ -98,12 +99,12 @@ import com.arialyy.aria.core.task.Task;
   private Aria() {
   }
 
+
   /**
    * 接受Activity、Service、Application
    */
   public static AMReceiver whit(Context context) {
-    //if (context == null) throw new IllegalArgumentException("context 不能为 null");
-    checkNull(context);
+    CheckUtil.checkNull(context);
     if (context instanceof Activity
         || context instanceof Service
         || context instanceof Application) {
@@ -117,7 +118,7 @@ import com.arialyy.aria.core.task.Task;
    * 处理Fragment
    */
   public static AMReceiver whit(Fragment fragment) {
-    checkNull(fragment);
+    CheckUtil.checkNull(fragment);
     return AriaManager.getInstance(
         Build.VERSION.SDK_INT >= Build.VERSION_CODES.M ? fragment.getContext()
             : fragment.getActivity()).get(fragment);
@@ -127,7 +128,7 @@ import com.arialyy.aria.core.task.Task;
    * 处理Fragment
    */
   public static AMReceiver whit(android.support.v4.app.Fragment fragment) {
-    checkNull(fragment);
+    CheckUtil.checkNull(fragment);
     return AriaManager.getInstance(
         Build.VERSION.SDK_INT >= Build.VERSION_CODES.M ? fragment.getContext()
             : fragment.getActivity()).get(fragment);
@@ -137,7 +138,7 @@ import com.arialyy.aria.core.task.Task;
    * 处理Fragment、或者DialogFragment
    */
   public static AMReceiver whit(DialogFragment dialog) {
-    checkNull(dialog);
+    CheckUtil.checkNull(dialog);
     return AriaManager.getInstance(
         Build.VERSION.SDK_INT >= Build.VERSION_CODES.M ? dialog.getContext() : dialog.getActivity())
         .get(dialog);
@@ -147,7 +148,7 @@ import com.arialyy.aria.core.task.Task;
    * 处理popupwindow
    */
   public static AMReceiver whit(PopupWindow popupWindow) {
-    checkNull(popupWindow);
+    CheckUtil.checkNull(popupWindow);
     return AriaManager.getInstance(popupWindow.getContentView().getContext()).get(popupWindow);
   }
 
@@ -155,7 +156,7 @@ import com.arialyy.aria.core.task.Task;
    * 处理Dialog
    */
   public static AMReceiver whit(Dialog dialog) {
-    checkNull(dialog);
+    CheckUtil.checkNull(dialog);
     return AriaManager.getInstance(dialog.getContext()).get(dialog);
   }
 
@@ -177,7 +178,7 @@ import com.arialyy.aria.core.task.Task;
    * 处理Dialog的通用任务
    */
   public static AriaManager get(Dialog dialog) {
-    checkNull(dialog);
+    CheckUtil.checkNull(dialog);
     return AriaManager.getInstance(dialog.getContext());
   }
 
@@ -185,7 +186,7 @@ import com.arialyy.aria.core.task.Task;
    * 处理Dialog的通用任务
    */
   public static AriaManager get(PopupWindow popupWindow) {
-    checkNull(popupWindow);
+    CheckUtil.checkNull(popupWindow);
     return AriaManager.getInstance(popupWindow.getContentView().getContext());
   }
 
@@ -193,7 +194,7 @@ import com.arialyy.aria.core.task.Task;
    * 处理Fragment的通用任务
    */
   public static AriaManager get(Fragment fragment) {
-    checkNull(fragment);
+    CheckUtil.checkNull(fragment);
     return AriaManager.getInstance(
         Build.VERSION.SDK_INT >= Build.VERSION_CODES.M ? fragment.getContext()
             : fragment.getActivity());
@@ -203,16 +204,12 @@ import com.arialyy.aria.core.task.Task;
    * 处理Fragment的通用任务
    */
   public static AriaManager get(android.support.v4.app.Fragment fragment) {
-    checkNull(fragment);
+    CheckUtil.checkNull(fragment);
     return AriaManager.getInstance(
         Build.VERSION.SDK_INT >= Build.VERSION_CODES.M ? fragment.getContext()
             : fragment.getActivity());
   }
 
-  private static void checkNull(Object obj) {
-    if (obj == null) throw new IllegalArgumentException("不能传入空对象");
-  }
-
   public static class SimpleSchedulerListener implements OnSchedulerListener {
 
     @Override public void onTaskPre(Task task) {
diff --git a/Aria/src/main/java/com/arialyy/aria/core/AriaManager.java b/Aria/src/main/java/com/arialyy/aria/core/AriaManager.java
index 59a91aed..c7062c66 100644
--- a/Aria/src/main/java/com/arialyy/aria/core/AriaManager.java
+++ b/Aria/src/main/java/com/arialyy/aria/core/AriaManager.java
@@ -217,6 +217,10 @@ import java.util.Set;
           key = clsName;
         }
         handlePopupWindowLift((PopupWindow) obj);
+      } else if (obj instanceof Service) {
+        key = clsName;
+      } else if (obj instanceof Application) {
+        key = clsName;
       }
     }
     if (obj instanceof Activity || obj instanceof Service) {
diff --git a/Aria/src/main/java/com/arialyy/aria/util/BufferedRandomAccessFile.java b/Aria/src/main/java/com/arialyy/aria/util/BufferedRandomAccessFile.java
index 167dbdf7..a0f36785 100644
--- a/Aria/src/main/java/com/arialyy/aria/util/BufferedRandomAccessFile.java
+++ b/Aria/src/main/java/com/arialyy/aria/util/BufferedRandomAccessFile.java
@@ -33,7 +33,7 @@ import java.util.Arrays;
  * functioning of the <code>RandomAccessFile</code> methods that are not
  * overridden here relies on the implementation of those methods in the
  * superclass.
- * Author : Avinash Lakshman ( alakshman@facebook.com) & Prashant Malik ( pmalik@facebook.com )
+ * Author : Avinash Lakshman ( alakshman@facebook.com) Prashant Malik ( pmalik@facebook.com )
  */
 
 public final class BufferedRandomAccessFile extends RandomAccessFile {
diff --git a/Aria/src/main/java/com/arialyy/aria/util/CheckUtil.java b/Aria/src/main/java/com/arialyy/aria/util/CheckUtil.java
index 5326a0a6..fd07b7c1 100644
--- a/Aria/src/main/java/com/arialyy/aria/util/CheckUtil.java
+++ b/Aria/src/main/java/com/arialyy/aria/util/CheckUtil.java
@@ -31,6 +31,10 @@ import java.util.regex.Pattern;
 public class CheckUtil {
   private static final String TAG = "CheckUtil";
 
+  public static void checkNull(Object obj) {
+    if (obj == null) throw new IllegalArgumentException("不能传入空对象");
+  }
+
   /**
    * 检查sql的expression是否合法
    */
diff --git a/README.md b/README.md
index ddc19c92..fbff9751 100644
--- a/README.md
+++ b/README.md
@@ -17,7 +17,7 @@ Aria，致力于让下载傻瓜化</br>
 ## 下载
 [![Download](https://api.bintray.com/packages/arialyy/maven/Aria/images/download.svg)](https://bintray.com/arialyy/maven/Aria/_latestVersion)</br>
 ```java
-compile 'com.arialyy.aria:Aria:2.4.0'
+compile 'com.arialyy.aria:Aria:2.4.1'
 ```
 
 ## 示例
@@ -134,6 +134,7 @@ Aria支持https下载，如果你希望使用自己的ca证书，那么你需要
 
 ***
 ## 开发日志
+ + v_2.4.1 修复下载慢的问题，修复application、service 不能使用的问题
  + v_2.4.0 支持https链接下载
  + v_2.3.8 修复数据错乱的bug、添加fragment支持
  + v_2.3.6 添加dialog、popupWindow支持