标签：style io color ar for sp strong 文件 div
在控制器的view加载完毕的时候会调用一次viewDidLoad方法
#pragma mark 控制器的view加载完毕的时候会调用一次
- (void)viewDidLoad {
[super viewDidLoad];
//1.创建按钮
//1.1.创建
UIButton *btn = [[UIButton alloc] init];
//1.2.设置按钮的尺寸和位置
btn.frame = CGRectMake(0, 20, 100, 100);
//1.3.设置按钮普通状态下的属性
//1.3.1.设置背景图片
[UIImage imageNamed:@"btn_01.png"];通过这样的方式将图片文件名转换成UIImage对象
setBackgroundImage：设置背景图片
UIControlStateNormal：默认情况下的按钮
UIImage *normal = [UIImage imageNamed:@"btn_01.png"];
[btn setBackgroundImage:normal forState:UIControlStateNormal];
//1.3.2.设置文字
setTitle：设置按钮上显示的文本
[btn setTitle:@"点我啊" forState:UIControlStateNormal];
//1.3.3.设置文字颜色
setTitleColor：设置按钮显示文本的颜色
[btn setTitleColor:[UIColor greenColor] forState:UIControlStateNormal];
//1.4.设置按钮高亮状态下的属性
//1.4.1.设置背景图片
forState:UIControlStateHighlighted：设置高亮状态下的按钮
UIImage *high = [UIImage imageNamed:@"btn_02.png"];
[btn setBackgroundImage:high forState:UIControlStateHighlighted];
//1.4.2.设置文字
[btn setTitle:@"点我啊" forState:UIControlStateHighlighted];
//1.4.3.设置文字颜色
[btn setTitleColor:[UIColor redColor] forState:UIControlStateHighlighted];
//1.5.监听按钮点击
[btn addTarget:self action:@selector(btnClick:) forControlEvents:UIControlEventTouchUpInside];
//2.添加按钮到控制器的view中
[self.view addSubview:btn];
//3.添加文本输入框
UITextField *field = [[UITextField alloc] init];
field.frame = CGRectMake(100, 100, 100, 50);
field.backgroundColor = [UIColor greenColor];
//中心点
CGFloat centerX = self.view.frame.size.width * 0.5;
CGFloat centerY = self.view.frame.size.height * 0.5;
field.center = CGPointMake(centerX, centerY);
//设置字体
field.font = [UIFont systemFontOfSize:25];
[self.view addSubview:field];
}
- (void)btnClick:(UIButton *)btn
{
NSLog(@"-------%p",btn);
}
开发进阶05_代码创建按钮和文本框
标签：style io color ar for sp strong 文件 div
原文地址：http://www.cnblogs.com/yaofch107/p/4055409.html
