IOS體系導航欄中有leftBarButtonItem和rightBarButtonItem，我們可以依據本身的需求來自界說這兩個UIBarButtonItem。

四種創立辦法

體系供給了四種創立的辦法：

- (instancetype)initWithBarButtonSystemItem:(UIBarButtonSystemItem)systemItem target:(id)target action:(SEL)action;

- (instancetype)initWithImage:(UIImage *)image style:(UIBarButtonItemStyle)style target:(id)target action:(SEL)action;

- (instancetype)initWithTitle:(NSString *)title style:(UIBarButtonItemStyle)style target:(id)target action:(SEL)action;

- (instancetype)initWithBarButtonSystemItem:(UIBarButtonSystemItem)systemItem target:(id)target action:(SEL)action;

- (instancetype)initWithCustomView:(UIView *)customView;

經由過程體系UIBarButtonSystemItem創立

自界說rightBarButtonItem，代碼以下：

self.navigationItem.rightBarButtonItem = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemDone target:self action:@selector(right:)];

UIBarButtonSystemItem有以下款式可以供選擇：

typedef NS_ENUM(NSInteger, UIBarButtonSystemItem) {
    UIBarButtonSystemItemDone,
    UIBarButtonSystemItemCancel,
    UIBarButtonSystemItemEdit, 
    UIBarButtonSystemItemSave, 
    UIBarButtonSystemItemAdd,
    UIBarButtonSystemItemFlexibleSpace,
    UIBarButtonSystemItemFixedSpace,
    UIBarButtonSystemItemCompose,
    UIBarButtonSystemItemReply,
    UIBarButtonSystemItemAction,
    UIBarButtonSystemItemOrganize,
    UIBarButtonSystemItemBookmarks,
    UIBarButtonSystemItemSearch,
    UIBarButtonSystemItemRefresh,
    UIBarButtonSystemItemStop,
    UIBarButtonSystemItemCamera,
    UIBarButtonSystemItemTrash,
    UIBarButtonSystemItemPlay,
    UIBarButtonSystemItemPause,
    UIBarButtonSystemItemReWind,
    UIBarButtonSystemItemFastForward,
#if __IPHONE_3_0 <= __IPHONE_OS_VERSION_MAX_ALLOWED
    UIBarButtonSystemItemUndo,
    UIBarButtonSystemItemRedo,
#endif
#if __IPHONE_4_0 <= __IPHONE_OS_VERSION_MAX_ALLOWED
    UIBarButtonSystemItemPageCurl,
#endif
};

最初別忘了完成right:辦法：

- (void)right:(id)sender
{
    NSLog(@"rightBarButtonItem");
}

自界說文字的UIBarButtonItem

self.navigationItem.leftBarButtonItem = [[UIBarButtonItem alloc] initWithTitle:@"back" style:UIBarButtonItemStylePlain target:self action:@selector(back:)];
UIBarButtonItemStyle有以下三種選擇：

typedef NS_ENUM(NSInteger, UIBarButtonItemStyle) {
    UIBarButtonItemStylePlain,
    UIBarButtonItemStyleBordered NS_ENUM_DEPRECATED_IOS(2_0, 8_0, "Use UIBarButtonItemStylePlain when minimum deployment target is IOS7 or later"),
    UIBarButtonItemStyleDone,
};

完成back:辦法：

- (void)back:(id)sender
{
    [self.navigationController popViewControllerAnimated:YES];
}

自界說照片的UIBarButtonItem

self.navigationItem.rightBarButtonItem = [[UIBarButtonItem alloc] initWithImage:[UIImage imageNamed:@"test"] style:UIBarButtonItemStylePlain target:self action:@selector(right:)];

自界說UIView的UIBarButtonItem

自界說UIView，然後經由過程initWithCustomView:辦法來創立UIBarButtonItem。

UIView *testView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 40, 60)];
self.navigationItem.rightBarButtonItem = [[UIBarButtonItem alloc] initWithCustomView:testView];

看到有同伙在後台發問：

我如今即須要改誰人導航原生的前往圖片，也要改前往文字，應當怎樣改呢，求指教。
其實，這個便可以用initWithCustomView:來處理，自界說UIView你可以放UIImageView和UILabel。可以自界說UIView，那末想怎樣界說都是可以的。

上面來看一個風趣的例子：
先說一下需求：
1.做一個RightBarButtonItem赓續扭轉的Demo；
2.點擊RightBarButtonItem 按鈕扭轉或暫停；
終究後果展現：

就是誰人音符圖形的扭轉。
症結代碼展現（已加正文）：

//
// ViewController.m
// NavigationBtn
//

#import "ViewController.h"
#define DEGREES_TO_RADIANS(angle) ((angle) / 180.0 * M_PI)

///ImageView扭轉狀況列舉
typedef enum {
RotateStateStop,
RotateStateRunning,
}RotateState;

@interface ViewController ()
{
///扭轉角度
CGFloat imageviewAngle;
///扭轉ImageView
UIImageView *imageView;
///扭轉狀況
RotateState rotateState;
}

@end


@implementation ViewController

- (void)viewDidLoad
{
[super viewDidLoad];
self.title=@"微信"賬號:樂Coding";
[self buildBarButtonItem];
}
#pragma mark 添加 RightBarButtonItem
-(void)buildBarButtonItem{

imageView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"icon"]];
imageView.autoresizingMask = UIViewAutoresizingNone;
imageView.contentMode = UIViewContentModeScaleToFill;
imageView.bounds=CGRectMake(0, 0, 40, 40);
//設置視圖為圓形
imageView.layer.masksToBounds=YES;
imageView.layer.cornerRadius=20.f;
UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom];
button.frame = CGRectMake(0, 0, 40, 40);
[button addSubview:imageView];
[button addTarget:self action:@selector(animate) forControlEvents:UIControlEventTouchUpInside];
imageView.center = button.center;
//設置RightBarButtonItem
UIBarButtonItem *barItem = [[UIBarButtonItem alloc] initWithCustomView:button];
self.navigationItem.rightBarButtonItem = barItem;
}
#pragma mark 點擊 RightBarButtonItem
- (void)animate {
//轉變ImageView扭轉狀況
if (rotateState==RotateStateStop) {
rotateState=RotateStateRunning;
[self rotateAnimate];
}else{
rotateState=RotateStateStop;
}
}
#pragma mark 扭轉動畫
-(void)rotateAnimate{
imageviewAngle+=50;
//0.5秒扭轉50度
[UIView animateWithDuration:0.5 delay:0.0 options:UIViewAnimationOptionCurveLinear animations:^{
imageView.transform = CGAff.netransformMakeRotation(DEGREES_TO_RADIANS(imageviewAngle));
} completion:^(BOOL finished) {
if (rotateState==RotateStateRunning) {
[self rotateAnimate];
}
}];
}

- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}

@end

【詳解iOS運用中自界說UIBarButtonItem導航按鈕的創立辦法】的相關資料介紹到這裡，希望對您有所幫助！ 提示：不會對讀者因本文所帶來的任何損失負責。如果您支持就請把本站添加至收藏夾哦！