刻舟求剑，

    CGSize timeSize = [self.timeLabel.textsizeWithFont:self.timeLabel.fontconstrainedToSize:CGSizeMake(MAXFLOAT, MAXFLOAT)];

1,        self.timeLabel.frame = CGRectMake(self.soundBtn.frame.origin.x - timeSize.width, self.timeLabel.frame.origin.y, timeSize.width, self.timeLabel.frame.size.height);

2,        self.timeLabel.frame = CGRectMake(self.soundBtn.frame.origin.x - self.timeLabel.frame.size.width, self.timeLabel.frame.origin.y, timeSize.width, self.timeLabel.frame.size.height);

刻舟求剑，

原文：http://www.cnblogs.com/guligei/p/3529477.html