IOS用代码创建控件，设置按钮标题不成功 - 黑马程序员技术交流社区

- (void)viewDidLoad
{
[super viewDidLoad];
UIButton *btn=[[UIButton alloc] init];
[btn setFrame:CGRectMake(10,10, 100, 100)];
[btn setImage:[UIImage imageNamed:@"btn_01.png"] forState:UIControlStateNormal];
//设置按钮上的文字
[btn setTitle:@"点我呀！" forState:UIControlStateNormal];
[btn setTitleColor:[UIColor greenColor] forState:UIControlStateNormal];
[btn setImage:[UIImage imageNamed:@"btn_02.png"] forState:UIControlStateHighlighted];
//设置按钮上的文字
[btn setTitle:@"摸我干啥！" forState:UIControlStateHighlighted];
[btn setTitleColor:[UIColor redColor] forState:UIControlStateHighlighted];
[btn addTarget:self action:@selector(btnClick:) forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:btn];
UITextField *text = [[UITextField alloc] init];
[text setFrame:CGRectMake(10, 120, 300, 40)];
[text setText:@"luseike"];
[text setBorderStyle:UITextBorderStyleLine];
[self.view addSubview:text];
}

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