UILabel
*label = [[UILabel alloc]
initWithFrame:CGRectMake(0,0,0,0)];//必须是这组值,这个frame是初设的,没关系,后面还会重新设置其size。
[label
setNumberOfLines:0]; //必须是这组值
NSString *s =
@"这个frame是初设的,没关系,后面还会重新设置其size.";
UIFont *font = [UIFont
fontWithName:@"Arial" size:12];
CGSize size =
CGSizeMake(320,2000);
CGSize labelsize
= [s sizeWithFont:font constrainedToSize:size
lineBreakMode:UILineBreakModeWordWrap];
label.frame = CGRectMake(0.0,
0.0, labelsize.width,
labelsize.height );
label.backgroundColor =
[UIColor purpleColor];
label.textColor = [UIColor
blackColor];
label.text = s;
label.font = font;
....//using the label. Such as
add it to the super view.
[label release];//release the
correct object.
下面代码获取NSString写进单行的宽度与高度:
CGSize singleLineStringSize = [s sizeWithFont:font];
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