今天這道菜主要是在navigationBar上面加入任意數量的任何控制元件。

1. UIBarButtonItem *myButton = [[[UIBarButtonItem alloc]  
2.                 initWithTitle:@"myButton"
3.                 style:UIBarButtonItemStyleBordered  
4.                 target:self   
5.                 action:@selector(action)]autorelease];  
6. self.navigationItem.leftBarButtonItem = myButton;  
7. //self.navigationItem.rightBarButtonItem = myButton;
8. //self.navigationItem.backBarButtonItem = myButton;
9. [myButton release];  

  NavigationItem類有以下一些成員：

-title

-titleview

-backBarButtonItem//這是有返回上一級事件的後退按鈕

-rightBarButtonItem

-leftBarButtonItem

1. UIToolbar *mycustomToolBar;  
2. NSMutableArray *mycustomButtons = [[NSMutableArray alloc] init];  
3. UIBarButtonItem *myButton1 = [[[UIBarButtonItem alloc]  
4.                 initWithTitle:@"Get5"
5.                 style:UIBarButtonItemStyleBordered  
6.                 target:self   
7.                 action:@selector(action)]autorelease];  
8. myButton1.width = 40;  
9. [mycustomButtons addObject: myButton1];  
10. UIBarButtonItem *myButton2 = [[[UIBarButtonItem alloc]  
11.                 initWithTitle:@"Play5"
12.                 style:UIBarButtonItemStyleBordered  
13.                 target:self   
14.                 action:@selector(action)]autorelease];  
15. myButton2.width = 40;  
16. [mycustomButtons addObject: myButton2];   
17. mycustomToolBar = [[UIToolbar alloc] initWithFrame:CGRectMake(0.0f, 0.0f,320.0f, 44.0f)];  
18. //mycustomToolBar.center = CGPointMake(160.0f,200.0f);
19. mycustomToolBar.barStyle = UIBarStyleDefault;  
20. [mycustomToolBar setItems:mycustomButtons animated:YES];  
21. [mycustomToolBar sizeToFit];      
22. [self.view addSubview:mycustomToolBar];  
23. //self.navigationItem.titleView = mycustomToolBar;//與上一句都可實現在上面疊加工具條
24. //將toolbar的顏色設定為透明，總之使用兩個控制元件疊加完美
25. [mycustomToolBar release];  
26. [mycustomButtons release];  

這裡是在UIToolbar 上面新增UIBarButtonItem,然而我們很多時候可能會新增其它控制元件，如：switch,label等等，所以在UIToolbar上面如何新增各種控制元件，就參考下一篇文章。

1. UISegmentedControl * mySegment;  
2. mySegment = [[UISegmentedControl alloc]  
3.                initWithFrame:CGRectMake(5.0f, 10.0, 60.0f, 30.0f)];  
4. [mySegment insertSegmentWithTitle:@"mySeg1" atIndex:0 animated:YES];   
5. [get5Segment insertSegmentWithTitle:@"mySeg2" atIndex:1 animated:YES];    
6. mySegment.segmentedControlStyle = UISegmentedControlStyleBar;  
7. [mySegment addTarget:self action:@selector(segAction:) forControlEvents:UIControlEventValueChanged];  
8. mySegment.selectedSegmentIndex = -1;  
9. [self.navigationController.navigationBar addSubview: mySegment];  
10. [mySegment release];  

1. UILabel* myLabel;  
2. myLabel=[[UILabel alloc] initWithFrame:CGRectMake(100.0f, 14.0f, 100.0f, 10.0f)];  
3. myLabel.font=[UIFont systemFontOfSize:10];  
4. myLabel.backgroundColor = [UIColor clearColor];  
5. [self.navigationController.navigationBar addSubview: myLabel];  
6. [myLabel release];  

1.     UIProgressView *myProgress;  
2. myProgress =[[UIProgressView alloc] initWithFrame:CGRectMake(80.0f, 28.0f, 150.0f, 8.0f)];  
3. [self.navigationController.navigationBar addSubview: myProgress];  
4. [myProgress release];