iOS星级选择，可滑动的，可点击

iOS 星级选择，可以设置星星的个数，星级间距，可以设置分数。

一：.h文件定义

@interface FSStarView : UIView/** *  设置控件分数 *  score     分数 */@property(nonatomic,assign) CGFloat score;/** *  Init FSStarView * *  @param frame  Rectangles *  @param numberOfStar 星星个数 *  @param space 星星间距 * *  @return FSStarViewObject */- (instancetype)initWithFrame:(CGRect)frame NumberOfStar:(NSInteger)numberOfStar Space:(CGFloat)space;/** * 选择的block回调 */@property(nonatomic,copy)  void(^CommentsStartViewBlock) (NSInteger);@end

二：.m文件定义

#import "FSStarView.h"#define kBACKGROUND_STAR @"xingxing-kong"#define kFOREGROUND_STAR @"xingxing"@interface FSStarView ()@property(nonatomic,assign) CGFloat space;@property (nonatomic, assign) NSInteger numberOfStar;@property (nonatomic, strong) UIView *starBackgroundView;@property (nonatomic, strong) UIView *starForegroundView;@end@implementation FSStarView- (instancetype)initWithFrame:(CGRect)frame NumberOfStar:(NSInteger)numberOfStar Space:(CGFloat)space{    self = [super initWithFrame:frame];    if (self) {        _numberOfStar = numberOfStar;        _space = space;        self.starBackgroundView = [self buidlStarViewWithImageName:kBACKGROUND_STAR];        self.starForegroundView = [self buidlStarViewWithImageName:kFOREGROUND_STAR];        [self addSubview:self.starBackgroundView];        [self addSubview:self.starForegroundView];        UITapGestureRecognizer *tapGR = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(tapGR:)];        [self addGestureRecognizer:tapGR];        //移动手势        UIPanGestureRecognizer *panGR = [[UIPanGestureRecognizer alloc] initWithTarget:self action:@selector(panGR:)];        [self addGestureRecognizer:panGR];    }    return self;}#pragma mark - Buidl Star View/** *  通过图片构建星星视图 * *  @param imageName 图片名称 * *  @return 星星视图 */- (UIView *)buidlStarViewWithImageName:(NSString *)imageName{    CGRect frame = self.bounds;    UIView *view = [[UIView alloc] initWithFrame:frame];    view.clipsToBounds = YES;    for (int i = 0; i < self.numberOfStar; i ++){        UIImageView *imageView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:imageName]];        imageView.userInteractionEnabled = YES;        imageView.frame = CGRectMake(i * (frame.size.height + _space), 0, frame.size.height, frame.size.height);        [view addSubview:imageView];    }    return view;}#pragma mark - Set Score/** *  设置控件分数 * *  @param score     分数 */- (void)setScore:(CGFloat)score{    CGFloat pointX = score * self.frame.size.height + ((NSInteger)score)*_space;    self.starForegroundView.frame = CGRectMake(0, 0, pointX, self.frame.size.height);}- (void)tapGR:(UITapGestureRecognizer *)tapGR{//点击手势对应的消息，如果有参数，参数就是手势本身    CGPoint point = [tapGR locationInView:tapGR.view];    NSLog(@"%f  %f",point.x,point.y);    if (point.x > ((self.frame.size.height + _space)*_numberOfStar)) {        point.x = (self.frame.size.height + _space)*_numberOfStar;    }else{        point.x = point.x;    }    NSInteger numInt = (point.x+_space)/(self.frame.size.height + _space);    CGFloat numFloat = (point.x+_space)/(self.frame.size.height + _space);    if (numFloat > numInt) {        numInt++;    }else{        numInt = numInt;    }    self.starForegroundView.width = numInt*(self.frame.size.height + _space);    self.CommentsStartViewBlock(numInt);}- (void)panGR:(UIPanGestureRecognizer *)panGR{//点击手势对应的消息，如果有参数，参数就是手势本身    CGPoint point = [panGR locationInView:panGR.view];    NSLog(@"%f  %f",point.x,point.y);    if ((point.x>=0)&&(point.x<=(5*(self.frame.size.height + _space)))) {        NSInteger num = (point.x+_space)/(self.frame.size.height + _space);        self.starForegroundView.width = num*(self.frame.size.height + _space);        self.CommentsStartViewBlock(num);    }}@end

三：控件的使用

    FSStarView *starView = [[FSStarView alloc] initWithFrame:FRAME(0, 0, 100, 15) NumberOfStar:5 Space:5];    starView.score = 3.0;//分值    [self.view addSubview:view];    starView.CommentsStartViewBlock = ^(NSInteger num){      NSLog(@"=======%ld", num);    };