我试图将文字绘制到*l。下面的方法有效，但文本已关闭。我在框架的中心有self.image = [self drawText]标签。 -(UIImage*) drawText{
UIGraphicsBeginImageContextWithOptions(_creatorImageView.image.size, false, _creatorImageView.image.scale);
[_creatorImageView.image drawInRect:CGRectMake(0,0,_creatorImageView.image.size.width, _creatorImageView.image.size.height)];
NSLog(@"Caption ARRY: %@", _creatorImageView.captionArray);
for (UILabel *l in _creatorImageView.captionArray){
NSLog(@"%f %f", l.frame.origin.x, l.frame.origin.y);
CGRect rect = CGRectMake(l.frame.origin.x, l.frame.origin.y, _creatorImageView.image.size.width, _creatorImageView.image.size.height);
[l.textColor set];
CGFloat radians = atan2f(l.transform.b, l.transform.a);
CGFloat degrees = radians * (180 / M_PI);
//CGContextConcatCTM(UIGraphicsGetCurrentContext(), CGAffineTransformMakeScale(l.transform.tx, l.transform.ty));
//CGContextConcatCTM(UIGraphicsGetCurrentContext(), CGAffineTransformMakeRotation(degrees));
//NSMutableParagraphStyle *paragraphStyle = [NSMutableParagraphStyle new];
//[paragraphStyle setLineBreakMode:NSLineBreakByWordWrapping];
//[paragraphStyle setAlignment:NSTextAlignmentCenter];
NSDictionary *attributes = @{ NSFontAttributeName: l.font,
NSForegroundColorAttributeName: l.textColor,
NSBackgroundColorAttributeName: l.backgroundColor};
//NSParagraphStyleAttributeName:paragraphStyle};
[l.text drawInRect:rect withAttributes:attributes];
NSLog(@"TEXT: %@", l.text);
}
UIImage *newImage = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
return newImage;
}
后，文字位于图片的左上角。
{{1}}
答案 0 :(得分：0)
您正在使用代码
[l.text drawInRect:rect withAttributes:attributes];
绘制文字。您指定的rect矩形控制文本的绘制位置，位于上下文的坐标中（其中0,0是上下文的左上角。）
如果您希望文本在上下文中居中，请根据上下文计算中心，并调整矩形的原点以使文本居中。
我会让你去算算数学。它只是几行代码。