//再給B2設置座標字體
btn2.frame=CGRectMake(100, 50, 50, 50);ui
//建立一個系統按鈕orm
UIButton *btn3=[UIButton buttonWithType:UIButtonTypeContactAdd];it
btn3.frame=CGRectMake(150, 50, 50, 50);方法
//設置背景顏色di
btn1.backgroundColor=[UIColor colorWithRed:0 green:1 blue:0 alpha:1];co
btn2.backgroundColor=[UIColor colorWithRed:1 green:0 blue:0 alpha:1];background
btn3.backgroundColor=[UIColor colorWithRed:0 green:0 blue:1 alpha:0.5];顏色
//設置BUTTON上的文字ab
btn1.titleLabel.text=@"3";
btn2.titleLabel.text=@"2";
btn3.titleLabel.text=@"1";
[btn1 setTitle:@"1" forState:UIControlStateNormal];
[btn2 setTitle:@"2" forState:UIControlStateNormal];
[btn3 setTitle:@"3" forState:UIControlStateNormal];
//設置Button上的字體大小
btn1.titleLabel.adjustsFontSizeToFitWidth=YES;
btn2.titleLabel.adjustsFontSizeToFitWidth=YES;
btn3.titleLabel.adjustsFontSizeToFitWidth=YES;
//設置Button上的文字顏色(沒被點擊時)
[btn1 setTitleColor:[UIColor whiteColor] forState:UIControlStateNormal];
[btn2 setTitleColor:[UIColor whiteColor] forState:UIControlStateNormal];
[btn3 setTitleColor:[UIColor whiteColor] forState:UIControlStateNormal];
//設置Button被點擊時的文字顏色
[btn1 setTitleColor:[UIColor brownColor] forState:UIControlStateHighlighted];
[btn2 setTitleColor:[UIColor redColor] forState:UIControlStateHighlighted];
//設置button爲禁用
btn3.enabled=NO;
[btn3 setTitleColor:[UIColor grayColor] forState:UIControlStateDisabled];
//uibutton的三種狀態 1.normal 沒被點 二、highlighted被點中了 3.Disable 禁用
//圓角設置方法
btn.layer.cornerRadius = 50;
btn.layer.masksToBounds = YES;