优化target结构

Change-Id: I7ec154c9d5d5319b5dc8fdbf908f4358dbf4baaf

app/src/main/java/com/arialyy/simple/download/group/DownloadGroupActivity.java

@@ -80,7 +80,7 @@ public class DownloadGroupActivity extends BaseActivity<ActivityDownloadGroupBin
       case R.id.start:
         Aria.download(this)
             .load(mUrls)
-            .setDownloadDirPath(
+            .setDirPath(
                 Environment.getExternalStorageDirectory().getPath() + "/Download/group_test_3")
             .setGroupAlias("任务组测试")
             .setSubFileName(getModule(GroupModule.class).getSubName())

app/src/main/java/com/arialyy/simple/download/group/FTPDirDownloadActivity.java

@@ -66,7 +66,7 @@ public class FTPDirDownloadActivity extends BaseActivity<ActivityDownloadGroupBi
       case R.id.start:
         Aria.download(this)
             .loadFtpDir(dir)
-            .setDownloadDirPath(
+            .setDirPath(
                 Environment.getExternalStorageDirectory().getPath() + "/Download/ftp_dir")
             .setGroupAlias("ftp文件夹下载")
             //.setSubTaskFileName(getModule(GroupModule.class).getSubName())