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问题:
I want to change navigation title's font and color..so, for that i've done this below code..but its not working...
if (SYSTEM_VERSION_GREATER_THAN_OR_EQUAL_TO(@"7")) { NSDictionary *navbarTitleTextAttributes = [NSDictionary dictionaryWithObjectsAndKeys: [UIColor whiteColor], NSForegroundColorAttributeName, [UIFont fontWithName:@"MyFavoriteFont" size:20.0], NSFontAttributeName, nil]; [[UINavigationBar appearance] setTitleTextAttributes:navbarTitleTextAttributes]; NSLog(@"setTitleTextAttributes"); }
why this code is not working?
回答1:
Apply Attributes to Navigationcontroller instance.
if (SYSTEM_VERSION_GREATER_THAN_OR_EQUAL_TO(@"7")) { NSDictionary *navbarTitleTextAttributes = [NSDictionary dictionaryWithObjectsAndKeys: [UIColor whiteColor], NSForegroundColorAttributeName, [UIFont fontWithName:@"MyFavoriteFont" size:20.0], NSFontAttributeName, nil]; [self.transitionNavController.navigationBar setTitleTextAttributes:navbarTitleTextAttributes]; }
Hope this helps...
回答2:
if([[[UIDevice currentDevice] systemVersion] floatValue] < 7.0) { [[UINavigationBar appearance] setBackgroundImage:[UIImage imageNamed:@"nav_bg.png"] forBarMetrics:UIBarMetricsDefault]; [[UINavigationBar appearance] setTitleTextAttributes: @{ UITextAttributeTextColor: [UIColor whiteColor],UITextAttributeTextShadowColor: [UIColor clearColor],UITextAttributeTextShadowOffset: [NSValue valueWithUIOffset:UIOffsetMake(0.0f, 1.0f)],UITextAttributeFont: [UIFont fontWithName:@"ArialMT" size:18.0f] }]; CGFloat verticalOffset = -4; [[UINavigationBar appearance] setTitleVerticalPositionAdjustment:verticalOffset forBarMetrics:UIBarMetricsDefault]; } else { [[UINavigationBar appearance] setBarTintColor:[UIColor whiteColor]]; // Uncomment to change the color of back button [[UINavigationBar appearance] setTintColor:[UIColor whiteColor]]; // Uncomment to assign a custom backgroung image [[UINavigationBar appearance] setBackgroundImage:[UIImage imageNamed:@"nav_bg.png"] forBarMetrics:UIBarMetricsDefault]; // Uncomment to change the back indicator image [[UINavigationBar appearance] setBackIndicatorImage:[UIImage imageNamed:@""]]; [[UINavigationBar appearance] setBackIndicatorTransitionMaskImage:[UIImage imageNamed:@""]]; // Uncomment to change the font style of the title NSShadow *shadow = [[NSShadow alloc] init]; shadow.shadowColor = [UIColor colorWithRed:0.0 green:0.0 blue:0.0 alpha:0.8]; shadow.shadowOffset = CGSizeMake(0, 1); [[UINavigationBar appearance] setTitleTextAttributes: [NSDictionary dictionaryWithObjectsAndKeys:[UIColor colorWithRed:245.0/255.0 green:245.0/255.0 blue:245.0/255.0 alpha:1.0], NSForegroundColorAttributeName,shadow, NSShadowAttributeName,[UIFont fontWithName:@"ArialMT" size:18.0], NSFontAttributeName, nil]]; CGFloat verticalOffset = 0; [[UINavigationBar appearance] setTitleVerticalPositionAdjustment:verticalOffset forBarMetrics:UIBarMetricsDefault]; }
