Frame Style Layout Paragraph sub, set width height

Calculate the width and height of a text

/** *  计算一段文字的宽高 * *  @param size       这段文字的最大宽高 *  @param options    NSStringDrawingUsesLineFragmentOrigin *  @param attributes 文字的字体属性 *  @param context    nil * *  @return 返回的是 CGRect 类型，frame */- (CGRect)boundingRectWithSize:(CGSize)size options:(NSStringDrawingOptions)options attributes:(NSDictionary *)attributes context:(NSStringDrawingContext *)context NS_AVAILABLE_IOS(7_0);

The first method calculates the height of the text 过时的方法

    //  首先设置文字的宽和高    CGFloat textW = ?;    CGSize textMaxWH = CGSizeMake(textW, ?);    //设置文字的行数 设为0->会自动换行    text_label.numberOfLines = 0; CGFloat textH = [text sizeWithFont:[UIFont systemFontOfSize:14] constrainedToSize:textMaxWH].height;

The second method calculates the height of the text

    //  首先设置文字的宽和高    CGFloat textW = ?;    CGSize textMaxWH = CGSizeMake(textW, ?);    //设置文字的行数 设为0->会自动换行    text_label.numberOfLines = 0; //设置内部文字的字体属性 NSDictionary *attr = @{ NSFontAttributeName : [UIFont systemFontOfSize:14] }; CGFloat textH = [text boundingRectWithSize:textMaxWH options:NSStringDrawingUsesLineFragmentOrigin attributes:attr context:nil].size.height;

Calculates the width of a sentence of text

    //设置内部文字的字体属性    NSDictionary *attr = @{NSFontAttributeName:[UIFont systemFontOfSize:17]};    CGFloat textW = [text sizeWithAttributes:attr].width;

Frame Style Layout Paragraph sub, set width height