bug fix

@@ -146,6 +146,7 @@ static float kprogressViewRadius = 2.0f;
             if (self.isAppeared) {
                 [_currentNaviBar addSubview:self.progressView];
             }
+            _progressBar.progressView = self.progressView;
         }else{
              [self.progressView setFrame:CGRectMake(0, 0, CGRectGetWidth(self.view.frame), kprogressViewHeight)];
             self.progressView.autoresizingMask = UIViewAutoresizingFlexibleWidth|UIViewAutoresizingFlexibleBottomMargin;
@@ -442,7 +443,7 @@ static float kprogressViewRadius = 2.0f;
 {
     UIViewController *result = nil;
     
-    UIWindow * window = [[[UIApplication sharedApplication] delegate] window];
+    UIWindow * window = (UIWindow *)[[[UIApplication sharedApplication] delegate] window];
     if (window.windowLevel != UIWindowLevelNormal)
     {
         NSArray *windows = [[UIApplication sharedApplication] windows];