修复上传崩溃的bug

Aria/build.gradle

@@ -7,8 +7,8 @@ android {
   defaultConfig {
     minSdkVersion 9
     targetSdkVersion 23
-    versionCode 312
-    versionName "3.1.2"
+    versionCode 313
+    versionName "3.1.3"
   }
   buildTypes {
     release {
@@ -23,4 +23,4 @@ dependencies {
   testCompile 'junit:junit:4.12'
   compile 'com.android.support:appcompat-v7:23.1.1'
 }
-//apply from: 'jcenter.gradle'
+apply from: 'jcenter.gradle'

Aria/src/main/java/com/arialyy/aria/core/queue/AbsTaskQueue.java

@@ -31,7 +31,7 @@ abstract class AbsTaskQueue<TASK extends ITask, TASK_ENTITY extends ITaskEntity,
     implements ITaskQueue<TASK, TASK_ENTITY, ENTITY> {
   private final String TAG = "AbsTaskQueue";
   CachePool<TASK> mCachePool = new CachePool<>();
-  ExecutePool<TASK> mExecutePool = null;
+  ExecutePool<TASK> mExecutePool;
 
   /**
    * 获取任务执行池

Aria/src/main/java/com/arialyy/aria/core/queue/UploadTaskQueue.java

@@ -32,7 +32,6 @@ public class UploadTaskQueue extends AbsTaskQueue<UploadTask, UploadTaskEntity,
   private static final String TAG = "UploadTaskQueue";
   private static volatile UploadTaskQueue INSTANCE = null;
   private static final Object LOCK = new Object();
-  private ExecutePool<UploadTask> mExecutePool = new ExecutePool<>(false);
 
   public static UploadTaskQueue getInstance() {
     if (INSTANCE == null) {
@@ -43,6 +42,9 @@ public class UploadTaskQueue extends AbsTaskQueue<UploadTask, UploadTaskEntity,
     return INSTANCE;
   }
 
+  private UploadTaskQueue() {
+    mExecutePool = new ExecutePool<>(false);
+  }
 
   @Override public void setMaxTaskNum(int newMaxNum) {
 
@@ -74,5 +76,4 @@ public class UploadTaskQueue extends AbsTaskQueue<UploadTask, UploadTaskEntity,
       Log.d(TAG, "从缓存池删除任务，删除" + (mCachePool.removeTask(task) ? "成功" : "失败"));
     }
   }
-
 }