iOS UIBarButtonItem间距、title点击大小改变

UIBarButtonItem的使用

一、initWithTitle  字体大小、颜色

UIBarButtonItem *item = [[UIBarButtonItem alloc] initWithTitle:@"说明" style:UIBarButtonItemStylePlain target:self action:@selector(onRightButtonClick)];

    item.tintColor = [UIColor whiteColor];

    self.navigationItem.rightBarButtonItem = item;

    [self.navigationItem.rightBarButtonItem setTitleTextAttributes:[NSDictionary dictionaryWithObjectsAndKeys:[UIFont boldSystemFontOfSize:14],NSFontAttributeName, nil] forState:UIControlStateNormal];

    [self.navigationItem.rightBarButtonItem setTitleTextAttributes:[NSDictionary dictionaryWithObjectsAndKeys:[UIFont boldSystemFontOfSize:14],NSFontAttributeName, nil] forState:UIControlStateHighlighted];

二、initWithCustomView 两个Item之间的间距

    UIButton *btn1 = [UIButton buttonWithType:UIButtonTypeCustom];

    [btn1 addTarget:self action:@selector(onSZRightButtonClick) forControlEvents:UIControlEventTouchUpInside];

    [btn1 setImage:[UIImage imageNamed:@"icon-wd-sz"] forState:UIControlStateNormal];

    [btn1 sizeToFit];

    UIBarButtonItem *item1 = [[UIBarButtonItem alloc] initWithCustomView:btn1];

    UIBarButtonItem *fixedSpaceBarButtonItem = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFixedSpace target:nil action:nil];

    fixedSpaceBarButtonItem.width = 15;

    UIButton *btn2 = [UIButton buttonWithType:UIButtonTypeCustom];

    [btn2 addTarget:self action:@selector(onXXRightButtonClick) forControlEvents:UIControlEventTouchUpInside];

    [btn2 setImage:[UIImage imageNamed:@"icon-wd-xx"] forState:UIControlStateNormal];

    [btn2 sizeToFit];

    UIBarButtonItem *item2 = [[UIBarButtonItem alloc] initWithCustomView:btn2];

    self.navigationItem.rightBarButtonItems  = @[item2,fixedSpaceBarButtonItem,item1];

三、initWithImage 如果放两个的话，间距不能控制，改用initWithCustomView

    UIImage *image = [[UIImage imageNamed:@"icon"] imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal];

    UIBarButtonItem *leftBarButton = [[UIBarButtonItem alloc] initWithImage:image style:UIBarButtonItemStylePlain target:self action:@selector(onLeftButtonClick)];

    self.navigationItem.leftBarButtonItem = leftBarButton;