ios UI实现技巧

1. statusBar 移动位置
   

   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);

    

2. tabBar 自定义的图标
   

   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)];

    

3. tabBarItem 自定义颜色
   

   [[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];

    

4. 扩展点击区域
   

   #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

    

5. tabBarController 动态添加删除
   

   @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

    

6. navigationBar 自定义
   

   [[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]];
   
       }

    

7. 本地语言修改
   

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

    

8. UITableView控制表格线

   -(void)viewDidLayoutSubviews
   
   {
   
       if ([self.tableView respondsToSelector:@selector(setSeparatorInset:)]) {
   
           [self.tableView setSeparatorInset:UIEdgeInsetsMake(0,0,0,0)];
   
       }
   
       
   
       if ([self.tableView respondsToSelector:@selector(setLayoutMargins:)]) {
   
           [self.tableView setLayoutMargins:UIEdgeInsetsMake(0,0,0,0)];
   
       }
   
   }
   
   
   
   -(void)tableView:(UITableView *)tableView willDisplayCell:(UITableViewCell *)cell forRowAtIndexPath:(NSIndexPath *)indexPath
   
   {
   
       if ([cell respondsToSelector:@selector(setSeparatorInset:)]) {
   
           [cell setSeparatorInset:UIEdgeInsetsZero];
   
       }
   
       
   
       if ([cell respondsToSelector:@selector(setLayoutMargins:)]) {
   
           [cell setLayoutMargins:UIEdgeInsetsZero];
   
       }
   
   }