方法一:
UIBarButtonItem *item = [[UIBarButtonItem alloc] initWithTitle:@”” style:UIBarButtonItemStylePlain target:nil action:nil];
self.navigationItem.backBarButtonItem = item;
方法二:
self.navigationItem.backBarButtonItem=nil;
方法一:
UIBarButtonItem *item = [[UIBarButtonItem alloc] initWithTitle:@”” style:UIBarButtonItemStylePlain target:nil action:nil];
self.navigationItem.backBarButtonItem = item;
方法二:
self.navigationItem.backBarButtonItem=nil;