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-(void )SetNavBarView{
    searchBarBtn.hidden=YES;

    UIView *NavBarView  ;
    NavBarView=[[UIView alloc]initWithFrame:CGRectMake(0, 0, 320, 44)];

    UIButton *btn1 = [[UIButton alloc] initWithFrame:CGRectMake(0, 0, 44, 44)];
    btn1.titleLabel.font=[UIFont systemFontOfSize:14];
    [btn1 setBackgroundImage:[UIImage imageNamed:@"list.png"] forState:UIControlStateSelected];
    [btn1 setBackgroundImage:[UIImage imageNamed:@"nine_grid.png"] forState:UIControlStateNormal];
    btn1.tag=10;
    [btn1 addTarget:self action:@selector(btnBarClick:) forControlEvents:UIControlEventTouchUpInside];
    [NavBarView addSubview:btn1];


    UIButton *btn2 = [[UIButton alloc] initWithFrame:CGRectMake(45, 0, 44, 44)];
    btn2.titleLabel.font=[UIFont systemFontOfSize:14];
    [btn2 setBackgroundImage:[UIImage imageNamed:@"map.png"] forState:UIControlStateNormal];
    btn2.tag=11;
    [btn2 addTarget:self action:@selector(btnBarClick:) forControlEvents:UIControlEventTouchUpInside];

    [NavBarView addSubview:btn2];



    UILabel *labtitle=[[UILabel alloc]initWithFrame:CGRectMake(95, 0, 120, 44)];
    labtitle.text=NSLocalizedString(@"people_nearby", nil);
    labtitle.textColor=[UIColor whiteColor];
    labtitle.backgroundColor=[UIColor clearColor];
    labtitle.textAlignment=UITextAlignmentCenter;
    labtitle.font=[UIFont boldSystemFontOfSize:20.0];
    [NavBarView addSubview:labtitle];



    UIButton *btn3 = [[UIButton alloc] initWithFrame:CGRectMake(135, 0, 95, 44)];
    btn3.tag=12;
    [btn3 addTarget:self action:@selector(btnBarClick:) forControlEvents:UIControlEventTouchUpInside];

    [NavBarView addSubview:btn3];

    arrowImage=[[UIImageView alloc]initWithFrame:CGRectMake(75, 16, 10, 10)];
    arrowImage.image=[UIImage imageNamed:@"arrow_down.png"];//arrow_down.png
    [btn3 addSubview:arrowImage];

    UIButton *btn4 = [[UIButton alloc] initWithFrame:CGRectMake(230, 0, 44, 44)];
    btn4.titleLabel.font=[UIFont systemFontOfSize:14];

    [btn4 setBackgroundImage:[UIImage imageNamed:@"ic_action_search.png"] forState:UIControlStateNormal];
    btn4.tag=13;
    [btn4 addTarget:self action:@selector(btnBarClick:) forControlEvents:UIControlEventTouchUpInside];

    [NavBarView addSubview:btn4];


//    [bubble stretchableImageWithLeftCapWidth:20 topCapHeight:14]
    UIButton *btn5 = [[UIButton alloc] initWithFrame:CGRectMake(275, 0, 44, 44)];
    btn5.backgroundColor=[UIColor redColor];
    [btn5 setBackgroundImage:[UIImage imageNamed:@"location.png" ] forState:UIControlStateNormal];
     btn5.tag=14;
    [btn5 addTarget:self action:@selector(btnBarClick:) forControlEvents:UIControlEventTouchUpInside];
    [NavBarView addSubview:btn5];

    NavBarView.hidden=NO;

//    [self.view addSubview:NavBarView];
    self.navigationItem.titleView=NavBarView;


}

我有一个UINavigationItem，它有五个按钮。第五个按钮btn5只能点击左侧，btn5不能点击右侧。（按钮大小为 44 x 44）

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1 回答 1

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这是因为 UINavigationBarItem 的大小，默认情况下它会在两边留下 14px。如果你给你的第一个按钮一个背景颜色，那么你会看到那个空间。

于 2013-02-19T07:47:33.537 回答