UIButton的基本用法，平时用的也就是这么多，其他遇到在加

//实例化2种方法

UIButton *btn1 = [[UIButton alloc] init];

UIButton *btn = [UIButton buttonWithType:UIButtonTypeCustom];

//坐标和大小

btn.frame = CGRectMake(100, 100, 100, 100);

//背景颜色

btn.backgroundColor = [UIColor redColor];

//设置字体

[btn setTitle:@"UIButton" forState:UIControlStateNormal];

//设置字体颜色

[btn setTitleColor:[UIColor grayColor] forState:UIControlStateNormal];

//设置层的弧度

btn.layer.cornerRadius = 50.0f;

//多余的层是否隐藏

btn.layer.masksToBounds = YES;

//设置层的宽度

btn.layer.borderWidth = 1.0f;

//设置层的颜色

btn.layer.borderColor = [[UIColor yellowColor]CGColor];

//标记

btn.titleLabel.tag = 100;

//设置文字的大小

btn.titleLabel.font = [UIFont systemFontOfSize:12.0f];

//文字加粗

btn.titleLabel.font = [UIFont boldSystemFontOfSize:20];

//设置图片

[btn setImage:[UIImage p_w_picpathNamed:@"1.png"] forState:UIControlStateNormal];

//设置背景图片

[btn setBackgroundImage:[UIImage p_w_picpathNamed:@"1.png"] forState:UIControlStateNormal];

//设置透明度

[btn setAlpha:0.5f];

//是否选择

[btn setSelected:YES];

//是否隐藏

[btn setHidden:NO];

//是否高亮

[btn setHighlighted:YES];

//是否可以触摸

[btn setEnabled:YES];

//设置是否交互事

[btn setUserInteractionEnabled:YES];

//设置文字的偏移

[btn setTitleEdgeInsets:UIEdgeInsetsMake(0, 0, 0, 0)];

//设置图片的偏移

[btn setImageEdgeInsets:UIEdgeInsetsMake(0, 0, 0, 0)];

//垂直

[btn setContentVerticalAlignment:UIControlContentVerticalAlignmentCenter];

//水平

[btn setContentHorizontalAlignment:UIControlContentHorizontalAlignmentCenter];

//文字居中

btn.titleLabel.textAlignment = NSTextAlignmentCenter;

//设置中心坐标

[btn setCenter:CGPointMake(100, 100)];

//设置文字阴影颜色

[btn setTitleShadowColor:[UIColor grayColor] forState:UIControlStateNormal];

//文字发光

[btn setShowsTouchWhenHighlighted:YES];

//点击事件

[btn addTarget:self action:@selector(goToView:) forControlEvents:UIControlEventTouchUpInside];

//加入视图中

[self.view addSubview:btn];