iOS 7 - UITextView大小字体,适合所有文本进入视图(无滚动) [英] iOS 7 - UITextView size font to fit all text into view (no scroll)
问题描述
我正在尝试找到一种不推荐使用的方法来缩小textview的字体大小,以便所有文本都适合textview而不需要滚动。
I am trying to find a non-deprecated method to size the font of a textview down so that all text fits in the textview without requiring scrolling.
方法'sizeWithFont'已被弃用,我想确保最佳实践,XCode说要使用'boundingRectWithSize',但不知道如何使用它来缩小字体大小,以便所有文本适合。
The method 'sizeWithFont' is deprecated and I want to ensure best practices, and XCode says to use 'boundingRectWithSize' but not sure how to use this to size a font down so that all text fits.
有什么建议吗?
不,我不能使用UILabel。我需要将文本垂直对齐在顶部,而UILabel不会这样做。
Any suggestions? And NO I can not use a UILabel instead. I need to have the text vertically aligned at the top and UILabel does not do this.
这适用于iOS 7以前版本
CGFloat fontSize;
CGFloat minSize;
if([deviceType isEqualToString:@"iPad"] || [deviceType isEqualToString:@"iPad Simulator"]){
fontSize = 40;
minSize = 15;
}
else{
fontSize = 18;
minSize = 8;
}
while (fontSize > minSize)
{
CGSize size = [quote sizeWithFont:[UIFont fontWithName:@"Interstate" size:fontSize] constrainedToSize:CGSizeMake(newView.frame.size.width, 10000)];
if (size.height <= newView.frame.size.height) break;
fontSize -= 1.0;
}
推荐答案
解决方案1
您的问题可以通过简单地替换 sizeWithFont:constrainedToSize:
来解决:
boundingRectWithSize:CGSizeMake(newView.frame.size.width, FLT_MAX)
options:NSStringDrawingUsesLineFragmentOrigin
attributes:@{NSFontAttributeName:[UIFont fontWithName:@"Interstate" size:fontSize]}
context:nil];
解决方案2
sizeThatFits
方法可以用来解决这个问题:
Solution 2
The sizeThatFits
method can be used to address this problem like this:
while (fontSize > minSize && [newView sizeThatFits:(CGSizeMake(newView.frame.size.width, FLT_MAX))].height >= newView.frame.size.height ) {
fontSize -= 1.0;
newView.font = [tv.font fontWithSize:fontSize];
}
我希望其中一个解决方案可以解决您的问题。干杯!
I hope one of these solutions solve your problem. Cheers!
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