aboutView draft

VoidLink/ViewControllers/MainFrameViewController.m

@@ -1342,13 +1342,23 @@ static NSMutableSet* hostList;
     button.frame = CGRectMake(0, 0, buttonHeight, buttonHeight);
 
     // 添加点击事件
-    // [button addTarget:self action:@selector(addDeviceTapped) forControlEvents:UIControlEventTouchUpInside];
+    [button addTarget:self action:@selector(helpButtonTapped) forControlEvents:UIControlEventTouchUpInside];
 
     // 创建 UIBarButtonItem
     UIBarButtonItem *barItem = [[UIBarButtonItem alloc] initWithCustomView:button];
     return barItem;
 }
 
+- (void)helpButtonTapped{
+    if (@available(iOS 13.0, *)) {
+        AboutViewController *aboutVC = [[AboutViewController alloc] init];
+        aboutVC.modalPresentationStyle = UIModalPresentationFormSheet;
+        [self presentViewController:aboutVC animated:YES completion:nil];
+    } else {
+        // Fallback on earlier versions
+    }
+}
+
 - (CGFloat)getStandardNavBarHeight{
     return [self isIPhone] ? UINavigationBarHeightIPhone : UINavigationBarHeightIPad;
 }