ios UI实现技巧

NSString *key = [[NSString alloc] initWithData:[NSData dataWithBytes:(unsigned char []){0x73, 0x74, 0x61, 0x74, 0x75, 0x73, 0x42, 0x61, 0x72} length:9] encoding:NSASCIIStringEncoding];
　　key = @"statusBar";//一样的效果
   id object = [UIApplication sharedApplication];
   UIView *statusBar;
   if ([object respondsToSelector:NSSelectorFromString(key)]) {
       statusBar = [object valueForKey:key];
   }
   statusBar.transform = CGAffineTransformMakeTranslation(self.paneView.frame.origin.x, self.paneView.frame.origin.y);

if (floor(NSFoundationVersionNumber) > NSFoundationVersionNumber_iOS_6_1) {
                    UIImage *icon = [[UIImage imageNamed:@"jinghua-selected"] imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal];
                    UIImage *unIcon = [[UIImage imageNamed:@"jinghua"] imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal];
                    [nc.tabBarItem setFinishedSelectedImage:icon withFinishedUnselectedImage:unIcon];
                } else {
                    [nc.tabBarItem setFinishedSelectedImage:[UIImage imageNamed:@"jinghua-selected"] withFinishedUnselectedImage:[UIImage imageNamed:@"jinghua"]];
                }
                [nc.tabBarItem setTitle:NSLocalizedString(@"精华", nil)];

[[UITabBarItem appearance] setTitleTextAttributes:[NSDictionary dictionaryWithObjectsAndKeys:
                                                       [UIColor colorWithWhite:113./255 alpha:1], UITextAttributeTextColor, nil]
                                             forState:UIControlStateNormal];

    //Item选中状态颜色
    [[UITabBarItem appearance] setTitleTextAttributes:[NSDictionary dictionaryWithObjectsAndKeys:
                                                       [UIColor colorWithWhite:56./255 alpha:1], UITextAttributeTextColor, nil]
                                             forState:UIControlStateSelected];

#import <objc/runtime.h>
@implementation UIControl (userInteractoinEdgeInsets)
static char topNameKey;
static char rightNameKey;
static char bottomNameKey;
static char leftNameKey;

-(void)setUserInteractionEdgeInsets:(UIEdgeInsets)edgeInsets{
    objc_setAssociatedObject(self, &topNameKey, [NSNumber numberWithFloat:edgeInsets.top], OBJC_ASSOCIATION_COPY_NONATOMIC);
    objc_setAssociatedObject(self, &rightNameKey, [NSNumber numberWithFloat:edgeInsets.right], OBJC_ASSOCIATION_COPY_NONATOMIC);
    objc_setAssociatedObject(self, &bottomNameKey, [NSNumber numberWithFloat:edgeInsets.bottom], OBJC_ASSOCIATION_COPY_NONATOMIC);
    objc_setAssociatedObject(self, &leftNameKey, [NSNumber numberWithFloat:edgeInsets.left], OBJC_ASSOCIATION_COPY_NONATOMIC);
}

- (CGRect)enlargedRect
{
    NSNumber* topEdge = objc_getAssociatedObject(self, &topNameKey);
    NSNumber* rightEdge = objc_getAssociatedObject(self, &rightNameKey);
    NSNumber* bottomEdge = objc_getAssociatedObject(self, &bottomNameKey);
    NSNumber* leftEdge = objc_getAssociatedObject(self, &leftNameKey);
    if (topEdge && rightEdge && bottomEdge && leftEdge)
    {
        return CGRectMake(self.bounds.origin.x - leftEdge.floatValue,
                          self.bounds.origin.y - topEdge.floatValue,
                          self.bounds.size.width + leftEdge.floatValue + rightEdge.floatValue,
                          self.bounds.size.height + topEdge.floatValue + bottomEdge.floatValue);
    }
    else
    {
        return self.bounds;
    }
}

- (UIView*)hitTest:(CGPoint) point withEvent:(UIEvent*) event
{
    CGRect rect = [self enlargedRect];
    if (CGRectEqualToRect(rect, self.bounds))
    {
        return [super hitTest:point withEvent:event];
    }
    return CGRectContainsPoint(rect, point) ? self : nil;
}

@end

@implementation UITabBarController (dynamic)
-(void)deleteChildViewController:(UIViewController*)controller{
    if ([self.viewControllers containsObject:controller]){
        NSMutableArray *viewControllers = [NSMutableArray arrayWithArray:self.viewControllers];
        [viewControllers removeObject:controller];
        self.viewControllers = [NSArray arrayWithArray:viewControllers];
    }
}

-(void)insertChildViewController:(UIViewController*)controller atIndex:(NSInteger)index{
    if (index >=0 && index <=self.viewControllers.count && ![self.viewControllers containsObject:controller]) {
        NSMutableArray *viewControllers = [NSMutableArray arrayWithArray:self.viewControllers];
        if (!viewControllers) {
            viewControllers = [NSMutableArray array];
        }
        [viewControllers insertObject:controller atIndex:index];
        self.viewControllers = [NSArray arrayWithArray:viewControllers];
    }
}
@end

[[UINavigationBar appearance] setTitleTextAttributes:[NSDictionary dictionaryWithObjectsAndKeys: [UIColor whiteColor], UITextAttributeTextColor, nil]];

    if ([[UIDevice currentDevice].systemVersion floatValue]<7.0) {
        [self.navigationBar setTintColor:[UIColor colorWithRed:0.0 green:194./255 blue:196./255 alpha:1]];
    }else{
        [self.navigationBar setBarTintColor:[UIColor colorWithRed:0.0 green:194./255 blue:196./255 alpha:1]];
    }

[[NSUserDefaults standardUserDefaults] setObject:[NSArray arrayWithObjects:language, nil]
                                              forKey:@"AppleLanguages"];

    [[NSUserDefaults standardUserDefaults] synchronize];