自定义导航栏上的按钮

UIButton *leftButton = [[UIButton alloc] initWithFrame:CGRectMake(15, 15, 40, 40)];

leftButton.titleLabel.font = [UIFont systemFontOfSize:14];
[leftButton setTitleColor:UIColorFromRGB(0x19191a) forState:UIControlStateNormal];
[leftButton setTitle:@"账单" forState:UIControlStateNormal];
[leftButton addTarget:self action:@selector(didList:) forControlEvents:UIControlEventTouchUpInside];

UIBarButtonItem *leftBarButtonItems = [[UIBarButtonItem alloc] initWithCustomView:leftButton];

UIBarButtonItem *nagetiveSpacer = [[UIBarButtonItem alloc]initWithBarButtonSystemItem:UIBarButtonSystemItemFixedSpace
target:nil action:nil];
//    nagetiveSpacer.width = -15;//这个值可以根据自己需要自己调整
self.navigationItem.leftBarButtonItems = @[nagetiveSpacer, leftBarButtonItems];

UIButton *rightButton = [[UIButton alloc] initWithFrame:CGRectMake(200, 15, 20, 17)];

rightButton.titleLabel.font = [UIFont systemFontOfSize:14];
[rightButton setTitleColor:UIColorFromRGB(0x19191a) forState:UIControlStateNormal];
[rightButton setImage:IMAGENAMED(@"storehouse") forState:UIControlStateNormal];
//    [leftButton setTitle:@"账单" forState:UIControlStateNormal];
[rightButton addTarget:self action:@selector(didList:) forControlEvents:UIControlEventTouchUpInside];

UIBarButtonItem *rightBarButtonItems = [[UIBarButtonItem alloc] initWithCustomView:rightButton];

//    UIBarButtonItem *nagetiveSpacer = [[UIBarButtonItem alloc]initWithBarButtonSystemItem:UIBarButtonSystemItemFixedSpace
//                                                                                   target:nil action:nil];
//    nagetiveSpacer.width = 40;//这个值可以根据自己需要自己调整
//    self.navigationItem.rightBarButtonItems = @[nagetiveSpacer, rightBarButtonItems];

UIButton *rightButtonMore = [[UIButton alloc] initWithFrame:CGRectMake(220, 15, 20, 17)];

rightButtonMore.titleLabel.font = [UIFont systemFontOfSize:14];
[rightButtonMore setTitleColor:UIColorFromRGB(0x19191a) forState:UIControlStateNormal];
[rightButtonMore setImage:IMAGENAMED(@"Treasure_more") forState:UIControlStateNormal];
//    [leftButton setTitle:@"账单" forState:UIControlStateNormal];
[rightButtonMore addTarget:self action:@selector(clickMore:) forControlEvents:UIControlEventTouchUpInside];

UIBarButtonItem *rightBarButtonItemsMore = [[UIBarButtonItem alloc] initWithCustomView:rightButtonMore];

UIBarButtonItem *nagetiveSpacerMore = [[UIBarButtonItem alloc]initWithBarButtonSystemItem:UIBarButtonSystemItemFixedSpace
target:nil action:nil];
nagetiveSpacerMore.width = 0;//这个值可以根据自己需要自己调整
self.navigationItem.rightBarButtonItems = @[nagetiveSpacerMore, rightBarButtonItemsMore, rightBarButtonItems];