Navigation

//self.navigationItem.leftBarButtonItem = [[UIBarButtonItem alloc] initWithTitle:@"主页" style:UIBarButtonItemStylePlain target:self action:@selector(backAction)];
 UIButton *button = [[UIButton alloc] initWithFrame:CGRectMake(0,0,60,31)];
 [button setBackgroundImage:[UIImage imageNamed:@"abc.png"] forState:UIControlStateNormal];
    UIBarButtonItem *btn = [[UIBarButtonItem alloc] initWithCustomView:button];
    self.navigationItem.rightBarButtonItem = btn;
    [button release];
    [btn release];
-(void)backAction
{
 self.navigationController.navigationBarHidden = YES;
    [self.navigationController popViewControllerAnimated:YES];
}
//自定义背景
UINavigationController *nav = [[UINavigationController alloc]initWithRootViewController:adressPage];
    [nav.navigationBar setBackgroundImage:[UIImage imageNamed:@"tbar.png"] forBarMetrics:UIBarMetricsDefault];  //设置背景
    [nav.navigationBar setBarStyle:UIBarStyleBlack];