self.view.backgroundColor = [UIColor grayColor];
self.text = [[UITextField alloc] initWithFrame:CGRectMake(100, 100, 200, 110)];
self.text.text = @"空间";
self.text.font = [UIFont systemFontOfSize:50 weight:20];
self.text.textColor = [UIColor redColor];
[self.view addSubview: self.text];
CALayer *layer = [self.text layer];
layer.borderColor = [[UIColor blueColor] CGColor];
layer.borderWidth = 2.0;
self.text.layer.shadowColor = [[UIColor blueColor]CGColor];
self.text.layer.shadowOpacity = 3;
self.text.layer.shadowOffset = CGSizeMake(15, 3);
self.text.layer.shadowRadius = 0.4;
[self.view addSubview:self.text];