#define CONTENT_MAX_WIDTH 300.0f
+(UIImage *)imageFromText:(NSArray*)arrContent withFont:(CGFloat)fontSize withTextColor:(UIColor *)textColor withBgImage:(UIImage *)bgImage withBgColor:(UIColor *)bgColor
{
// set the font type and size
UIFont *font = [UIFont fontWithName:@"Heiti SC" size:fontSize];
NSMutableArray *arrHeight = [[NSMutableArray alloc] initWithCapacity:arrContent.count];
CGFloat fHeight = 0.0f;
for (NSString *sContent in arrContent) {
CGSize stringSize = [sContent sizeWithFont:font constrainedToSize:CGSizeMake(CONTENT_MAX_WIDTH, 10000) lineBreakMode:NSLineBreakByWordWrapping];
[arrHeight addObject:[NSNumber numberWithFloat:stringSize.height]];
fHeight += stringSize.height;
}
CGSize newSize = CGSizeMake(CONTENT_MAX_WIDTH+20, fHeight+50);
// Create a stretchable image for the top of the background and draw it
UIGraphicsBeginImageContextWithOptions(newSize,NO,0.0);
CGContextRef ctx = UIGraphicsGetCurrentContext();
//如果设置了背景图片
if(bgImage)
{
UIImage* stretchedTopImage = [bgImage stretchableImageWithLeftCapWidth:0 topCapHeight:0];
[stretchedTopImage drawInRect:CGRectMake(0, 0, newSize.width, newSize.height)];
}else
{
if(bgColor)
{
//填充背景颜色
[bgColor set];
UIRectFill(CGRectMake(0, 0, newSize.width, newSize.height));
}
}
CGContextSetCharacterSpacing(ctx, 10);
CGContextSetTextDrawingMode (ctx, kCGTextFill);
[textColor set];
int nIndex = 0;
CGFloat fPosY = 20.0f;
for (NSString *sContent in arrContent) {
NSNumber *numHeight = [arrHeight objectAtIndex:nIndex];
CGRect rect = CGRectMake(10, fPosY, CONTENT_MAX_WIDTH , [numHeight floatValue]);
[sContent drawInRect:rect withFont:font lineBreakMode:NSLineBreakByWordWrapping alignment:NSTextAlignmentLeft];
fPosY += [numHeight floatValue];
nIndex++;
}
// transfer image
UIImage *image = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
return image;
}