IOS UIButton 常用方法介绍

// 创建按钮

UIButton* button = [UIButton buttonWithType:UIButtonTypeRoundedRect];

// 设置按钮标题

[button setTitle:@"触摸我!" forState:UIControlStateNormal];

// 根据标题长度自动决定按钮尺寸

[button sizeToFit];

// 将按钮布置在中心位置

button.center = self.view.center;

// 画面变化时按钮位置自动调整

button.autoresizingMask = UIViewAutoresizingFlexibleWidth |

UIViewAutoresizingFlexibleHeight |

UIViewAutoresizingFlexibleLeftMargin |

UIViewAutoresizingFlexibleRightMargin |

UIViewAutoresizingFlexibleTopMargin |

UIViewAutoresizingFlexibleBottomMargin;

// 设置按钮被触摸时响应方法

[button addTarget:self

action:@selector(buttonDidPush:)

forControlEvents:UIControlEventTouchUpInside];