自定义cell高度和获取图片高度宽度

自定义cell高度和获取图片高度宽度

1---------获取图片的高度宽度

  NSData *data = [NSData dataWithContentsOfURL:[NSURL URLWithString:url];

   UIImage*showimage = [UIImageimageWithData:data];

CGFloat width = showImage.size.width;(宽度)

CGFloat height = showImage.size.height;(高度);

2.----------------自定义cell高度- 文字自适应 

+ (CGFloat)getStringHeight:(NSString*)string font:(CGFloat)fontSize {    CGRect rect = [string boundingRectWithSize:CGSizeMake(SCREEN_WIDTH-40, MAXFLOAT) options:NSStringDrawingUsesLineFragmentOrigin | NSStringDrawingUsesFontLeading attributes:@{NSFontAttributeName:[UIFont systemFontOfSize:fontSize]} context:nil];      return ceil(rect.size.height);}