//自適應內容的高度

-(CGSize)getLabelText:(NSString *)text{

    CGSize maxSize =CGSizeMake(WIDTH-20*SCALE,300*SCALE);

    NSDictionary *dic =@{NSFontAttributeName:[UIFontsystemFontOfSize:16.0]};

    NSStringDrawingOptions options =NSStringDrawingUsesLineFragmentOrigin;

    CGSize labelSize = [textboundingRectWithSize:maxSizeoptions:options attributes:diccontext:nil].size;

    return labelSize;

}