请问一下 实战2 自动将指定电子邮件标记为已读

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1

成功安装后 为什么MailboxPickerController的左边没有BarButtonItem
还是老样子
代码：

#import "iOSREMailMarker.h"

%hook MailboxPickerController
%new
- (void)showAlert
{
    UIAlertController *alert = [UIAlertController alertControllerWithTitle:@"Whitelist" message:@"Please input an email address" preferredStyle:UIAlertControllerStyleAlert];
    UIAlertAction *ok = [UIAlertAction actionWithTitle:@"OK" style:UIAlertActionStyleDefault handler:^(UIAlertAction *action) {
        UITextField *textField = alert.textFields.firstObject;
        if ([textField.text length] != 0) {
            [[NSUserDefaults standardUserDefaults] setObject:textField.text forKey:@"whitelist"];
        }
    }];
    UIAlertAction *cancel = [UIAlertAction actionWithTitle:@"cancel" style:UIAlertActionStyleCancel handler:nil];
    [alert addAction:ok];
    [alert addAction:cancel];
    [alert addTextFieldWithConfigurationHandler:^(UITextField * _Nonnull textField) {
        textField.placeholder = @"2267536171@qq.com";
        textField.text = [[NSUserDefaults standardUserDefaults] objectForKey:@"whitelist"];
    }];
    [self presentViewController:alert animated:YES completion:nil];
}

- (void)viewWillAppear:(BOOL)arg1
{ 
    self.navigationItem.leftBarButtonItem = [[[UIBarButtonItem alloc] initWithTitle:@"Whitelist" style:UIBarButtonItemStylePlain target:self action:@selector(showAlert)] autorelease];
    %orig;
}
%end

%hook MailboxContentViewController
- (void)megaMallMessageCountChanged:(NSConcreteNotification *)arg1
{
	%orig;
    NSMutableSet *targetMessage = [NSMutableSet setWithCapacity:600];
    NSString *whitelist = [[NSUserDefaults standardUserDefaults] objectForKey:@"whitelist"];
    MessageMegaMall *mall = [arg1 object];
    NSSet *messages = [mall copyAllMessages];
    for (MFLibraryMessage *message in messages) {
        MFMessageInfo *messageInfo = [message copyMessageInfo];
        for (NSString *sender in [message senders]) {
            if (!messageInfo.read && [sender rangeOfString:[NSString stringWithFormat:@"<%@>", whitelist]].location == NSNotFound) {
                [targetMessage addObject:message];
                
            }
        }
        [messageInfo release];
    }
    [messages release];
    [mall markMessagesAsViewed:targetMessage];
}
%end
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