shadowColor 详解

x向右为正，y向下为正

1.y<0

UILabel *label=[[UILabel
alloc] initWithFrame:CGRectMake(40,
40, 250,
50)];

label.backgroundColor=[UIColor
clearColor];

label.textColor=[UIColor
redColor];

label.text=@"和合谷";

label.shadowColor=[UIColor
blueColor];

label.shadowOffset=CGSizeMake(0, -3);

运行结果为：

第二.y>0

UILabel *label=[[UILabel
alloc] initWithFrame:CGRectMake(40,
40, 250,
50)];

label.backgroundColor=[UIColor
clearColor];

label.textColor=[UIColor
redColor];

label.text=@"和合谷";

label.shadowColor=[UIColor
blueColor];

label.shadowOffset=CGSizeMake(0,
3);

第三、x>0

UILabel *label=[[UILabel
alloc] initWithFrame:CGRectMake(40,
40, 250,
50)];

label.backgroundColor=[UIColor
clearColor];

label.textColor=[UIColor
redColor];

label.text=@"和合谷";

label.shadowColor=[UIColor
blueColor];

label.shadowOffset=CGSizeMake(3,
0);

[self.view
addSubview:label];

结果：

第四、x<0

UILabel *label=[[UILabel
alloc] initWithFrame:CGRectMake(40,
40, 250,
50)];

label.backgroundColor=[UIColor
clearColor];

label.textColor=[UIColor
redColor];

label.text=@"和合谷";

label.shadowColor=[UIColor
blueColor];

label.shadowOffset=CGSizeMake(-3,
0);

shadowColor 详解,布布扣,bubuko.com