(iPhone/iPad開發)根據文本的字數自動調整UILabel的寬高

lineBreakMode:UILineBreakModeWordWrap];

textSize.width

textSize.height

即為UILable的寬和高，

CGRect labelFrame = CGRectMake (0, 0, textSize.width, textSize.height);
UILabel *label = [[UILabel alloc] initWithFrame:labelFrame];

即可用到

工整一些做法：

[cpp]

1. //計算文本所占高度
2. //2個參數：寬度和文本內容
3. -(CGFloat)calculateTextHeight:(CGFloat)widthInput Content:(NSString *)strContent{
4. CGSize constraint = CGSizeMake(widthInput, 20000.0f);
5. CGSize size = [strContent sizeWithFont:[UIFont systemFontOfSize:FONT_SIZE] constrainedToSize:constraint lineBreakMode:UILineBreakModeWordWrap];
6. CGFloat height = MAX(size.height, 44.0f);
7. return height;
8. }
10. //計算 寬度
11. -(CGFloat)calculateTextWidth:(NSString *)strContent{
12. // CGSize constraint = CGSizeMake(heightInput, heightInput);
13. CGFloat constrainedSize = 26500.0f; //其他大小也行
14. CGSize size = [strContent sizeWithFont:[UIFont systemFontOfSize:FONT_SIZE] constrainedToSize:CGSizeMake(constrainedSize, CGFLOAT_MAX) lineBreakMode:UILineBreakModeWordWrap];
15. // CGFloat height = MAX(size.height, 44.0f);
16. return size.width;
17. }