IOS 回收键盘通用代码

-(IBAction)spbResignFirstResponder:(id)sender
{
    //    NSLogObj(sender);
    if (sender == NULL || [sender isKindOfClass:[UITapGestureRecognizer class]]) {
        if (self.view != NULL && self.view.subviews != NULL && self.view.subviews.count > 0) {
            for (UIView *item in self.view.subviews) {
                if ([item isKindOfClass:[UITextField class]] || [item isKindOfClass:[UITextView class]]) {
                    UITextField *textField_item = (UITextField *)item;
                    [textField_item resignFirstResponder];
                }
                
                [self spbResignFirstResponder:item];
            }
        }
    }else if ([sender isKindOfClass:[UIView class]]) {
        UIView *view_item = sender;
        if ([view_item isKindOfClass:[UITextField class]] || [view_item isKindOfClass:[UITextView class]]) {
            [view_item resignFirstResponder];
        }
        
        if (view_item.subviews != NULL && view_item.subviews.count > 0) {
            for (UIView *item in view_item.subviews) {
                [self spbResignFirstResponder:item];
            }
        }
    }
}