【代码笔记】评分系统（小星星)

一，效果图。

 

二，工程图。

三，代码。

RootViewController.m

- (void)viewDidLoad { [super viewDidLoad]; // Do any additional setup after loading the view.
 UIImageView *imageView=[[UIImageView alloc] initWithFrame:CGRectMake(10, 80, 300, 50)]; //获得评分的图片
    [imageView setImage:[self setStarImage:@"4"]]; imageView.backgroundColor=[UIColor clearColor]; [self.view addSubview:imageView]; } //根据分数，反回图片
-(UIImage *)setStarImage:(NSString *)str { float a=atof([str UTF8String]); UIImage * image; if(a==0.000000){ image=[UIImage imageNamed:@"star0.png"]; }else if(a>0.000000&&a<1.000000){ image=[UIImage imageNamed:@"star1.png"]; }else if(a==1.000000){ image=[UIImage imageNamed:@"star2.png"]; }else if(a>1.000000&&a<2.000000){ image=[UIImage imageNamed:@"star3.png"]; }else if(a==2.000000){ image=[UIImage imageNamed:@"star4.png"]; }else if(a>2.000000&&a<3.000000){ image=[UIImage imageNamed:@"star5.png"]; }else if(a==3.0000000){ image=[UIImage imageNamed:@"star6.png"]; }else if(a>3.000000&&a<4.000000){ image=[UIImage imageNamed:@"star7.png"]; }else if(a==4.000000){ image=[UIImage imageNamed:@"star8.png"]; }else if(a>4.000000&&a<5.000000){ image=[UIImage imageNamed:@"star9.png"]; }else if(a==5.000000){ image=[UIImage imageNamed:@"star10.png"]; } return image; }