如何更改UINavigation leftBarButtonItem的颜色

Question

我希望我的leftBarButtonItem是一个红色按钮。我还没弄明白怎么做。我正在使用以下代码来构建导航栏和按钮。 任何帮助表示赞赏。 LQ

UINavigationBar *navBar = [[UINavigationBar alloc] initWithFrame:CGRectMake(0, 0, 320, 44)];
navBar.barStyle = UIBarStyleBlack; 
navBar.translucent = YES;
[self.view addSubview:navBar];
[navBar release];

UIBarButtonItem *clearButton = [[UIBarButtonItem alloc] 
initWithTitle:@"Clear"
style:UIBarButtonItemStyleBordered
target:self 
action:@selector(myAction:)];

navItem.leftBarButtonItem = clearButton;
[navBar pushNavigationItem:navItem animated:false];
[navBar setDelegate:self];    
[navItem release];
[clearButton release]; 

Answer 1

也许你会在this posting at Stack Overflow中找到更好的解决方案，或者你可以使用UISegmentedControl

UISegmentedControl *button = [[[UISegmentedControl alloc] initWithItems:[NSArray arrayWithObjects:@"Clear", nil]] autorelease];
button.momentary = YES;
button.segmentedControlStyle = UISegmentedControlStyleBar;
button.tintColor = [UIColor redColor];
...
UIBarButtonItem *clearButton = [[UIBarButtonItem alloc] initWithCustomView:button];

navItem.leftBarButtonItem = clearButton;