diff --git a/Demo/src/main/java/com/zv/downloader/bean/Task.java b/Demo/src/main/java/com/zv/downloader/bean/Task.java
index 57cc9cf..456db29 100644
--- a/Demo/src/main/java/com/zv/downloader/bean/Task.java
+++ b/Demo/src/main/java/com/zv/downloader/bean/Task.java
@@ -1,17 +1,17 @@
 package com.zv.downloader.bean;
 
+import android.widget.Button;
+import android.widget.ProgressBar;
+
+import com.excellence.downloader.FileDownloader.DownloadTask;
+import com.zv.downloader.R;
+
 import static com.excellence.downloader.entity.TaskEntity.STATUS_DISCARD;
 import static com.excellence.downloader.entity.TaskEntity.STATUS_DOWNLOADING;
 import static com.excellence.downloader.entity.TaskEntity.STATUS_ERROR;
 import static com.excellence.downloader.entity.TaskEntity.STATUS_PAUSE;
 import static com.excellence.downloader.entity.TaskEntity.STATUS_SUCCESS;
 
-import com.excellence.downloader.FileDownloader.DownloadTask;
-import com.zv.downloader.R;
-
-import android.widget.Button;
-import android.widget.ProgressBar;
-
 /**
  * <pre>
  *     author : VeiZhang
@@ -159,6 +159,13 @@ public void invalidateTask()
 		}
 	}
 
+	public static void setProgress(ProgressBar progressBar, long max, long progress) {
+		max = Math.max(max, 1);
+		progress = progress > max ? 0 : progress;
+//		progressBar.setMax(100);
+		progressBar.setProgress((int) Math.floor((float) progress / max * 100));
+	}
+
 	public void setSpeed(String speed)
 	{
 		mStartBtn.setText(speed);