修复组任务中，其中一个子任务是30x地址，导致调度器无法出现该子任务状态的问题

增加组任务groupHash冲突检查 https://github.com/AriaLyy/Aria/issues/635

PublicComponent/src/main/java/com/arialyy/aria/core/common/SubThreadConfig.java

@@ -36,6 +36,7 @@ public class SubThreadConfig {
   public boolean isBlock = false;
   // 启动的线程
   public int startThreadNum;
+  // 真正的下载地址，如果是30x，则是30x后的地址
   public String url;
   public File tempFile;
   // 线程记录

PublicComponent/src/main/java/com/arialyy/aria/core/download/AbsGroupTaskWrapper.java

@@ -32,4 +32,17 @@ public abstract class AbsGroupTaskWrapper<ENTITY extends AbsEntity, SUB extends
   public abstract List<SUB> getSubTaskWrapper();
 
   public abstract void setSubTaskWrapper(List<SUB> subTaskWrapper);
+
+  /**
+   * {@code true} 忽略任务冲突，不考虑组任务hash冲突的情况
+   */
+  private boolean ignoreTaskOccupy = false;
+
+  public boolean isIgnoreTaskOccupy() {
+    return ignoreTaskOccupy;
+  }
+
+  public void setIgnoreTaskOccupy(boolean ignoreTaskOccupy) {
+    this.ignoreTaskOccupy = ignoreTaskOccupy;
+  }
 }

PublicComponent/src/main/java/com/arialyy/aria/core/download/DownloadEntity.java

@@ -74,13 +74,16 @@ public class DownloadEntity extends AbsNormalEntity implements Parcelable {
     return m3U8Entity;
   }
 
+  /**
+   * 如果是30x，则是30x后的地址
+   */
   @Override public String getKey() {
-    return getUrl();
+    return isRedirect() ? getRedirectUrl() : getUrl();
   }
 
   @Override public int getTaskType() {
     int type;
-    if (getUrl() == null){
+    if (getUrl() == null) {
       type = ITaskWrapper.ERROR;
     } else if (getUrl().startsWith("http")) {
       M3U8Entity temp = getM3U8Entity();

PublicComponent/src/main/java/com/arialyy/aria/core/group/SimpleSchedulers.java

@@ -71,7 +71,7 @@ final class SimpleSchedulers implements Handler.Callback {
         mGState.listener.onSubRunning(loaderUtil.getEntity(), range);
         break;
       case IThreadStateManager.STATE_PRE:
-        mGState.listener.onSubPre(loaderUtil.getEntity());
+        mGState.listener.onSubPre(loaderUtil.getEntity( ));
         mGState.updateCount(loaderUtil.getKey());
         break;
       case IThreadStateManager.STATE_START:

PublicComponent/src/main/java/com/arialyy/aria/core/loader/NormalTTBuilder.java

@@ -115,7 +115,7 @@ public final class NormalTTBuilder implements IThreadTaskBuilder {
           b = new Bundle();
         }
         b.putString(IThreadStateManager.DATA_THREAD_NAME,
-            CommonUtil.getThreadName(getEntity().getUrl(), tr.threadId));
+            CommonUtil.getThreadName(getEntity().getKey(), tr.threadId));
         msg.setData(b);
         msg.sendToTarget();
         continue;

PublicComponent/src/main/java/com/arialyy/aria/core/task/ThreadTask.java

@@ -22,8 +22,8 @@ import android.os.Message;
 import android.os.Process;
 import com.arialyy.aria.core.AriaConfig;
 import com.arialyy.aria.core.ThreadRecord;
+import com.arialyy.aria.core.common.AbsEntity;
 import com.arialyy.aria.core.common.SubThreadConfig;
-import com.arialyy.aria.core.inf.IEntity;
 import com.arialyy.aria.core.inf.IThreadStateManager;
 import com.arialyy.aria.core.listener.ISchedulers;
 import com.arialyy.aria.core.manager.ThreadTaskManager;
@@ -50,7 +50,7 @@ public class ThreadTask implements IThreadTask, IThreadTaskObserver {
    */
   private final int RETRY_NUM = 2;
   private final String TAG = CommonUtil.getClassName(getClass());
-  private IEntity mEntity;
+  private AbsEntity mEntity;
   protected AbsTaskWrapper mTaskWrapper;
   private int mFailTimes = 0;
   private long mLastSaveTime, mLastSendProgressTime;
@@ -147,7 +147,7 @@ public class ThreadTask implements IThreadTask, IThreadTaskObserver {
   /**
    * 获取实体
    */
-  protected IEntity getEntity() {
+  protected AbsEntity getEntity() {
     return mEntity;
   }
 
@@ -244,7 +244,7 @@ public class ThreadTask implements IThreadTask, IThreadTaskObserver {
 
   @Override public String getThreadName() {
     return mThreadName == null ? (mThreadName =
-        CommonUtil.getThreadName(getConfig().url, getThreadId())) : mThreadName;
+        CommonUtil.getThreadName(getEntity().getKey(), getThreadId())) : mThreadName;
   }
 
   /**

PublicComponent/src/main/java/com/arialyy/aria/util/FileUtil.java

@@ -60,6 +60,18 @@ public class FileUtil {
   private static final String EXTERNAL_STORAGE_PATH =
       Environment.getExternalStorageDirectory().getPath();
 
+  /**
+   * 获取文件后缀名
+   * @return 获取不到文件名后缀，返回null
+   */
+  public static String getFileExtensionName(String fileName) {
+    if (TextUtils.isEmpty(fileName)) {
+      return null;
+    }
+    int endP = fileName.lastIndexOf(".");
+    return endP > -1 ? fileName.substring(endP + 1) : null;
+  }
+
   /**
    * 通过流创建文件
    *