UI的一些方法（按钮和线）

//设置按钮字体颜色

[self.determineBtn setTitleColor:[UIColor colorWithHexString:@"0xff9500"] forState:UIControlStateNormal];

[self.clearBtn setTitleColor:[UIColor grayColor] forState:UIControlStateNormal];

//设置button的边框的颜色和粗细

self.determineBtn.layer.borderWidth = 0.5;

self.determineBtn.layer.borderColor = [UIColor colorWithHexString:@"0xff9500"].CGColor;

self.clearBtn.layer.borderWidth = 0.5;

self.clearBtn.layer.borderColor = [UIColor colorWithRed:0.8 green:0.8 blue:0.8 alpha:1].CGColor;

//设置圆角

self.clearBtn.layer.masksToBounds = YES;

self.clearBtn.layer.cornerRadius = 5;

self.determineBtn.layer.masksToBounds = YES;

self.determineBtn.layer.cornerRadius = 5;

//设置线的高度的约束值

self.oneConstraint.constant = 0.45;

self.twoConstraint.constant = 0.45;

self.threeConstraint.constant = 0.45;

self.fourConstraint.constant = 0.45;

self.fiveConstraint.constant = 0.45;