学步园

在iOS5中，可以直接设置UIBarButtonItem的tintColor，而iOS4中则不能。所以得寻另外的方法解决。

1。 用UIButton做为它的custom view, 修改UIButton的参数达到tintColor的效果

    UIImage *image = [UIImage imageNamed:@"img.png"];
    UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom];
    [button setBackgroundImage:image forState:UIControlStateNormal];
    [button.layer setCornerRadius:4.0f];
    [button.layer setMasksToBounds:YES];
    button.frame=CGRectMake(0.0, 0, 40, 30);
    [button addTarget:self action:@selector(rightButtonAction) forControlEvents:UIControlEventTouchUpInside];
    
    UIBarButtonItem* rightItem = [[UIBarButtonItem alloc] initWithCustomView:button];
    [self.navigationItem setRightBarButtonItem:rightItem];

2。用UISegmentController作为它的custom view，因为UISegmentController有tintColor的属性

@interface UIBarButtonItem (Extension)
+(UIBarButtonItem*)barButtonItemWithTint:(UIColor*)color andTitle:(NSString*)itemTitle andTarget:(id)theTarget andSelector:(SEL)selector;
+(UIBarButtonItem*)barButtonItemWithTint:(UIColor*)color andImage:(UIImage*)img andTarget:(id)theTarget andSelector:(SEL)selector;
@end





#import "UIBarButtonItem+Extension.h"

@implementation UIBarButtonItem (Extension)

+(UIBarButtonItem*)barButtonItemWithTint:(UIColor*)color andTitle:(NSString*)itemTitle andTarget:(id)theTarget andSelector:(SEL)selector
{
    UISegmentedControl *button = [[UISegmentedControl alloc] initWithItems:[NSArray arrayWithObjects:itemTitle, nil]];
    button.momentary = YES;
    button.segmentedControlStyle = UISegmentedControlStyleBar;
    button.tintColor = color;
    [button addTarget:theTarget action:selector forControlEvents:UIControlEventValueChanged];
    
    UIBarButtonItem *removeButton = [[UIBarButtonItem alloc] initWithCustomView:button];
    
    return removeButton;
}

+(UIBarButtonItem*)barButtonItemWithTint:(UIColor*)color andImage:(UIImage*)img andTarget:(id)theTarget andSelector:(SEL)selector
{
    UISegmentedControl *button = [[UISegmentedControl alloc] initWithItems:[NSArray arrayWithObjects:img, nil]];
    button.momentary = YES;
    button.segmentedControlStyle = UISegmentedControlStyleBar;
    button.tintColor = color;
    [button addTarget:theTarget action:selector forControlEvents:UIControlEventValueChanged];
    
    UIBarButtonItem *removeButton = [[UIBarButtonItem alloc] initWithCustomView:button];
    
    return removeButton;
}

@end