自定义UINavigationBar 和 UIBarButtonItem(转)

步骤：

 

（1）创建Navigation的应用

（2）修改RootViewController为如下代码（笔者将两个文件合并一起，只为方便阅读）

（3）添加相应的图片到Resources

（4）Build and Run

 

#import <UIKit/UIKit.h>

@interface RootViewController : UITableViewController {}

@end

@implementation UINavigationBar (CustomImage)

- ( void)drawRect:( CGRect)rect {

     UIImage *image = [ UIImage  imageNamed:  @"nav.png"];

    [image  drawInRect : CGRectMake ( 0 ,  0 ,  self .frame .size .width ,  self .frame .size .height )];

}

@end

 

@implementation RootViewController

 

- ( id)initWithOwner:( UIViewController *)owner{

NSLog (@"gogo" );

UIButton *playNowButton = [[ UIButton  alloc]  initWithFrame: CGRectMake( 200,  0,  64,  32)];

[playNowButton setBackgroundImage :[ UIImage imageNamed : @"left.png" ] forState :UIControlStateNormal ];

[playNowButton addTarget : self action : @selector (doSomething)forControlEvents :UIControlEventTouchDown ];

UIBarButtonItem  *bar =[[UIBarButtonItem  alloc ]  initWithCustomView :playNowButton];

[playNowButton  release];

//self.buttonOwner = owner;

return bar;

}

- ( id)initWithOwner1:( UIViewController *)owner{

NSLog (@"gogo" );

UIButton *playNowButton = [[ UIButton  alloc]  initWithFrame: CGRectMake( 100,  0,  64,  32)];

[playNowButton setBackgroundImage :[ UIImage imageNamed : @"right.png" ] forState :UIControlStateNormal ];

[playNowButton addTarget : self action : @selector () forControlEvents :UIControlEventTouchDown ];

UIBarButtonItem  *bar =[[UIBarButtonItem  alloc ]  initWithCustomView :playNowButton];

[playNowButton  release];

//self.buttonOwner = owner;

return bar;

}

#pragma mark -

#pragma mark View lifecycle

 

- ( void)viewDidLoad {

UIBarButtonItem *buttonItem1 = [ self  initWithOwner1: self];

UIBarButtonItem *buttonItem = [ self  initWithOwner: self];

self .navigationItem .leftBarButtonItem  = buttonItem1;

self .navigationItem .rightBarButtonItem  = buttonItem;

    [ super viewDidLoad ];

}

 

- ( void)doSomething

{

NSLog (@"doSomething" );

[ self . navigationControlle  popToRootViewControllerAnimated : YES ];//pushViewController:self.recipeDetailView animated:YES];

}

#pragma mark -

#pragma mark Table view data source

 

// Customize the number of sections in the table view.

- ( NSInteger)numberOfSectionsInTableView:( UITableView *) tableView {

     return  1;

}

 

 

// Customize the number of rows in the table view.

- ( NSInteger)tableView:( UITableView *) tableView numberOfRowsInSection:( NSInteger)section {

     return  0;

}

 

 

// Customize the appearance of table view cells.

- ( UITableViewCell *)tableView:( UITableView *) tableView cellForRowAtIndexPath:( NSIndexPath*)indexPath {

 

     static  NSString *CellIdentifier =  @"Cell";

 

     UITableViewCell  *cell = [ tableView dequeueReusableCellWithIdentifier :CellIdentifier];

     if (cell ==  nil) {

        cell = [[[ UITableViewCell alloc ] initWithStyle :UITableViewCellStyleDefault reuseIdentifier :CellIdentifier] autorelease ];

    }

 

// Configure the cell.

 

     return cell;

}

 

- ( void)dealloc {

    [ super  dealloc];

}

 

 

@end