- (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;}