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CGSize textSize = CGSizeZero;
if ([[UIDevice currentDevice].systemVersion floatValue] >= 7.0)
{
textSize = [text sizeWithAttributes: @{NSFontAttributeName:_numLabel.font}];
}
else
{
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wdeprecated-declarations"
textSize = [text sizeWithFont:_numLabel.font];
#pragma clang diagnostic pop
}
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原文地址：http://www.cnblogs.com/417460188dy/p/4521942.html
