需求：要求标题过长时压缩标题，保证在线人数一定是完全展示的
图片.png
[self.roomNameLab mas_makeConstraints:^(MASConstraintMaker *make) {
make.top.inset(10);
make.leading.inset(10);
make.height.mas_equalTo(20);
}];
[self.onlineNumIcon mas_makeConstraints:^(MASConstraintMaker *make) {
make.width.height.mas_equalTo(4);
make.centerY.equalTo(self.roomNameLab);
make.leading.equalTo(self.roomNameLab.mas_trailing).offset(10);
}];
[self.onlineNumLab mas_makeConstraints:^(MASConstraintMaker *make) {
make.height.mas_equalTo(16);
make.centerY.equalTo(self.roomNameLab);
make.leading.equalTo(self.onlineNumIcon.mas_trailing).offset(2);
make.trailing.inset(10);
}];
[self.roomNameLab setContentCompressionResistancePriority:UILayoutPriorityDefaultLow forAxis:UILayoutConstraintAxisHorizontal];
[self.onlineNumLab setContentCompressionResistancePriority:UILayoutPriorityRequired forAxis:UILayoutConstraintAxisHorizontal];
