HUD总结

+ (UIColor *)blackColor;      // 0.0 white
+ (UIColor *)darkGrayColor;   // 0.333 white
+ (UIColor *)lightGrayColor;  // 0.667 white
+ (UIColor *)whiteColor;      // 1.0 white
+ (UIColor *)grayColor;       // 0.5 white
+ (UIColor *)redColor;        // 1.0, 0.0, 0.0 RGB
+ (UIColor *)greenColor;      // 0.0, 1.0, 0.0 RGB
+ (UIColor *)blueColor;       // 0.0, 0.0, 1.0 RGB
+ (UIColor *)cyanColor;       // 0.0, 1.0, 1.0 RGB
+ (UIColor *)yellowColor;     // 1.0, 1.0, 0.0 RGB
+ (UIColor *)magentaColor;    // 1.0, 0.0, 1.0 RGB
+ (UIColor *)orangeColor;     // 1.0, 0.5, 0.0 RGB
+ (UIColor *)purpleColor;     // 0.5, 0.0, 0.5 RGB
+ (UIColor *)brownColor;      // 0.6, 0.4, 0.2 RGB
+ (UIColor *)clearColor;      // 透明色

+ (UIColor *)colorWithRed:(CGFloat)red green:(CGFloat)green blue:(CGFloat)blue alpha:(CGFloat)alpha;

[UIView beginAnimations:nil context:nil];
[UIView setAnimationDuration:2.0];
/*需要执行的动画的代码*/
[UIView commitAnimations];

//动画执行两秒钟
[UIView animateWithDuration:2.0 animations:^{
        self.shopsView.alpha = 0.0;//透明度变为0.0
    }];

//1s后再执行动画,动画执行两秒钟
//options(动画的选项):kNilOptions    
[UIView animateWithDuration:2.0 delay:1.0 options:kNilOptions animations:^{self.shopsView.alpha = 0.0;} completion:^(BOOL finished){NSLog(@"播放完毕");}];

//设置按钮内容的内边距(影响到imageView和titleLabel)
@property (nonatomic) UIEdgeInsets contentEdgeInsets;
//设置titleLabel的内边距(影响到titleLabel)
@property(nonatomic) UIEdgeInsets titleEdgeInsets;
//设置imageView的内边距(影响到imageView)
@property(nonatomic) UIEdgeInsets imageEdgeInsets;

//只会中间的拉伸1*1部分
//rightCapWidth = width - leftCapWidth - 1;
//bottomCapWidth = width - topCapWidth - 1;

- (UIImage *)stretchableImageWithLeftCapWidth:(NSInteger)leftCapWidth topCapHeight:(NSInteger)topCapHeight;

- (UIImage *)resizableImageWithCapInsets:(UIEdgeInsets)capInsets; // create a resizable version of this image. the interior(内部) is tiled(平铺的) when drawn(拉伸).

(UIEdgeInsets)capInsets-->UIEdgeInsetsMake(top, left, bottom, right)

//resizingMode: 拉伸模式
- (UIImage *)resizableImageWithCapInsets:(UIEdgeInsets)capInsets resizingMode:(UIImageResizingMode)resizingMode;

- (UIStatusBarStyle)preferredStatusBarStyle
{
    //白色
    return UIStatusBarStyleLightContent;
}