这个要根据状况而定,有时会颇有用的。spa
//左侧输入框右侧按钮按钮变长有限制最小宽度,保持输入框与按钮左侧距离,设定按钮的压缩性强(即通常不被拉伸)输入框拉伸性强容易拉伸 [self.Button mas_makeConstraints:^(MASConstraintMaker *make) { make.centerY.equalTo(self.TextField); make.right.equalTo(contentView).offset(-DWF(25)); make.height.mas_equalTo(36); make.width.mas_greaterThanOrEqualTo(DWF(80)); }]; [self.Button setContentHuggingPriority:UILayoutPriorityDefaultHigh forAxis:UILayoutConstraintAxisHorizontal]; [self.TextField mas_makeConstraints:^(MASConstraintMaker *make) { make.height.mas_equalTo(DWF(36)); make.left.equalTo(self.verifyTipLabel); make.top.equalTo(self.verifyTipLabel.mas_bottom).offset(DEVICE_HEIGHT_OF(YDMargin20)); make.right.mas_equalTo(self.Button.mas_left).offset(-DWF(10)); }]; [self.TextField setContentCompressionResistancePriority:UILayoutPriorityDefaultHigh forAxis:UILayoutConstraintAxisHorizontal];