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 bddd61f9..688010dc 100644
--- a/Aria/src/main/java/com/arialyy/aria/core/AriaManager.java
+++ b/Aria/src/main/java/com/arialyy/aria/core/AriaManager.java
@@ -347,7 +347,7 @@ import org.xml.sax.SAXException;
     if (TextUtils.isEmpty(key)) {
       throw new IllegalArgumentException("未知类型");
     }
-    key += isDownload ? DOWNLOAD : UPLOAD;
+    key += (isDownload ? DOWNLOAD : UPLOAD) + obj.hashCode();
     return key;
   }
 
diff --git a/Aria/src/main/java/com/arialyy/aria/core/scheduler/AbsSchedulers.java b/Aria/src/main/java/com/arialyy/aria/core/scheduler/AbsSchedulers.java
index 83f82b28..35a030d1 100644
--- a/Aria/src/main/java/com/arialyy/aria/core/scheduler/AbsSchedulers.java
+++ b/Aria/src/main/java/com/arialyy/aria/core/scheduler/AbsSchedulers.java
@@ -54,12 +54,12 @@ abstract class AbsSchedulers<TASK_ENTITY extends AbsTaskEntity, TASK extends Abs
 
   @Override public void register(Object obj) {
     String targetName = obj.getClass().getName();
-    AbsSchedulerListener<TASK, AbsNormalEntity> listener = mObservers.get(targetName);
+    AbsSchedulerListener<TASK, AbsNormalEntity> listener = mObservers.get(getKey(obj));
     if (listener == null) {
       listener = createListener(targetName);
       if (listener != null) {
         listener.setListener(obj);
-        mObservers.put(targetName, listener);
+        mObservers.put(getKey(obj), listener);
       } else {
         ALog.e(TAG, "注册错误，没有【" + targetName + "】观察者");
       }
@@ -73,12 +73,16 @@ abstract class AbsSchedulers<TASK_ENTITY extends AbsTaskEntity, TASK extends Abs
     for (Iterator<Map.Entry<String, AbsSchedulerListener<TASK, AbsNormalEntity>>> iter =
         mObservers.entrySet().iterator(); iter.hasNext(); ) {
       Map.Entry<String, AbsSchedulerListener<TASK, AbsNormalEntity>> entry = iter.next();
-      if (entry.getKey().equals(obj.getClass().getName())) {
+      if (entry.getKey().equals(getKey(obj))) {
         iter.remove();
       }
     }
   }
 
+  private String getKey(Object obj) {
+    return obj.getClass().getName() + obj.hashCode();
+  }
+
   /**
    * 创建代理类
    *
diff --git a/app/src/main/java/com/arialyy/simple/download/SingleTaskActivity.java b/app/src/main/java/com/arialyy/simple/download/SingleTaskActivity.java
index fd2d1acb..58a781ce 100644
--- a/app/src/main/java/com/arialyy/simple/download/SingleTaskActivity.java
+++ b/app/src/main/java/com/arialyy/simple/download/SingleTaskActivity.java
@@ -16,6 +16,7 @@
 
 package com.arialyy.simple.download;
 
+import android.content.Intent;
 import android.os.Bundle;
 import android.os.Environment;
 import android.util.Log;
@@ -67,7 +68,7 @@ public class SingleTaskActivity extends BaseActivity<ActivitySingleBinding> {
 
   @Override protected void onCreate(Bundle savedInstanceState) {
     super.onCreate(savedInstanceState);
-    Aria.upload(this).register();
+    Aria.download(this).register();
   }
 
   /**
@@ -207,7 +208,8 @@ public class SingleTaskActivity extends BaseActivity<ActivitySingleBinding> {
         startD();
         break;
       case R.id.stop:
-        Aria.download(this).load(DOWNLOAD_URL).stop();
+        //Aria.download(this).load(DOWNLOAD_URL).stop();
+        startActivity(new Intent(this, SingleTaskActivity.class));
         //Aria.download(this).load(DOWNLOAD_URL).removeRecord();
         break;
       case R.id.cancel:
@@ -243,6 +245,6 @@ public class SingleTaskActivity extends BaseActivity<ActivitySingleBinding> {
 
   @Override protected void onStop() {
     super.onStop();
-    Aria.download(this).unRegister();
+    //Aria.download(this).unRegister();
   }
 }
\ No newline at end of file