PDF文档生成两种方式：
1.通过上下文绘制
2.通过UIPrintPageRenderer生成

• 上下文绘制

参考地址

这个绘制方法比较麻烦，要去计算文本图片内容的位置大小，然后再绘制。

• UIPrintPageRenderer

给render设置printformatter，然后直接绘制到PDF上下文中。

printformatter可以添加文本，富文本，html字符串，也有直接将view转化成UIViewPrintFormatter的类别。

这样子就好办了，写一个html，设置其中的样式，加载到webview中，最后webview调用viewPrintFormatter生成printFormatter，渲染PDF。

代码：

YHPDFTool.h

#import <UIKit/UIKit.h>

@interface YHPDFTool : UIView

/** 添加一行标题*/
- (void)addHtmlTitle:(NSString *)title;

/** 添加一个表格*/
-(void)addHtmlTableSegList:(NSArray <NSString *>*)titleTitles andContentList:(NSArray <NSArray <NSDictionary *>*>*)contentList;


+ (void)creatPDFOnVC:(UIViewController *)vc andConfigBlock:(void(^)(YHPDFTool * tool))configBlock andFinishBlock:(void(^)(BOOL isSuccess, NSString * filepath))finishblock;

@end

YHPDFTool.m

#import "YHPDFTool.h"
#import "UIView+YH.h"
#import <NSString+YYAdd.h>

@interface YHPDFTool()<UIWebViewDelegate>

@property (retain, nonatomic) UIWebView * webV;

@property (retain, nonatomic) NSMutableString * htmlStr;

@property (copy, nonatomic) void(^finishblock)(BOOL isSuccess, NSString * filepath);

- (void)creatPDF;

@end

@implementation YHPDFTool


+ (void)creatPDFOnVC:(UIViewController *)vc andConfigBlock:(void (^)(YHPDFTool *))configBlock andFinishBlock:(void (^)(BOOL, NSString *))finishblock
{
    YHPDFTool * tool = [[YHPDFTool alloc] initWithFrame:CGRectZero];
    
    tool.htmlStr = [[NSMutableString alloc] init];
    
    if(configBlock)
    {
        configBlock(tool);
    }
    
    tool.finishblock = finishblock;
    
    [vc.view addSubview:tool];
    
    [tool creatPDF];
}


- (void)creatPDF
{
    self.webV = [[UIWebView alloc] initWithFrame:self.bounds];
    self.webV.delegate = self;
    [self addSubview:self.webV];
    
    [self.webV loadHTMLString:self.htmlStr baseURL:[[NSBundle mainBundle] bundleURL]];

}

-(void)webViewDidStartLoad:(UIWebView *)webView
{

}

-(void)webView:(UIWebView *)webView didFailLoadWithError:(NSError *)error
{    
    if(self.finishblock)
    {
        self.finishblock(NO,nil);
    }
    
    if(self.superview)
    {
        [self removeFromSuperview];
    }
}

- (void)webViewDidFinishLoad:(UIWebView *)webView
{
    UIPrintPageRenderer *render = [[UIPrintPageRenderer alloc] init];
    render.headerHeight = 50;
    render.footerHeight = 50;
    [render addPrintFormatter:[webView viewPrintFormatter] startingAtPageAtIndex:0];
    CGRect page;
    page.origin.x=0;
    page.origin.y=0;
    page.size.width=600;
    page.size.height=612;
    
    
    CGRect printable=CGRectInset( page, 0, 0 );
    [render setValue:[NSValue valueWithCGRect:page] forKey:@"paperRect"];
    [render setValue:[NSValue valueWithCGRect:printable] forKey:@"printableRect"];
    
//    NSLog(@"number of pages %zd",[render numberOfPages]);
    
    NSMutableData * pdfData = [NSMutableData data];
    UIGraphicsBeginPDFContextToData( pdfData, CGRectZero, nil );
    
    for (NSInteger i=0; i < [render numberOfPages]; i++)
    {
        UIGraphicsBeginPDFPage();
        CGRect bounds = UIGraphicsGetPDFContextBounds();
        [render drawPageAtIndex:i inRect:bounds];
        
    }
    
    UIGraphicsEndPDFContext();
    
    [pdfData writeToFile:[self pathPDF] atomically:YES];
    

    if(self.finishblock)
    {
        self.finishblock(YES,[self pathPDF]);
    }
    
    if(self.superview)
    {
        [self removeFromSuperview];
    }
}


- (void)addHtmlTitle:(NSString *)title
{
    [self.htmlStr appendFormat:@"<br /><p>\
     <br />\
     <br />\
     </p>\
     <h2 style=\"text-align:center;\">\
     %@\
     </h2>\
     <p>\
     </p>\
     ",title];
}

-(void)addHtmlTableSegList:(NSArray<NSString *> *)titleTitles andContentList:(NSArray<NSArray<NSDictionary *> *> *)contentList
{
    [self.htmlStr appendString:@"<br /><p>\
     <table style=\"width:100%;\" cellpadding=\"2\" cellspacing=\"0\" border=\"1\" bordercolor=\"#000000\">\
     <tbody>"];
    
    if(titleTitles)
    {
        [self.htmlStr appendString:@"<tr>"];
        
        for(NSString * str in titleTitles)
        {
            [self.htmlStr appendFormat:@"<td>%@</td><br />",str];
        }
        [self.htmlStr appendString:@"</tr>"];
    }
    
    if(contentList)
    {
        for(NSArray * titleList in contentList)
        {
            [self.htmlStr appendString:@"<tr>"];
            
            for(NSDictionary * dataDic in titleList)
            {
                [self.htmlStr appendString:@"<td>"];
                
                NSString * str = dataDic[@"title"];
                NSString * img = dataDic[@"image"];
                
                if([img isNotBlank])
                {
                    NSString * imagePath = [[NSBundle mainBundle] pathForResource:[NSString stringWithFormat:@"%@@2x",img] ofType:@"png"];
                    
                    [self.htmlStr appendFormat:@"<img src=\"%@\" border=\"0\" width=\"15\" height=\"15\" alt=\"\" />  ",imagePath];
                }
                
                if([str isNotBlank])
                {
                    [self.htmlStr appendString:str];
                }
                
                [self.htmlStr appendString:@"<br /></td>"];
            }
            [self.htmlStr appendString:@"</tr>"];
        }
    }
    
    [self.htmlStr appendString:@"       </tbody>\
     </table>\
     </p>"];
    
}



- (NSString *)pathPDF
{
    NSString * path = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) firstObject];
    
    path = [path stringByAppendingPathComponent:@"yhpdf.pdf"];
    
//    NSLog(@"====\n%@",path);
    
    return path;
}

@end

如果html不是写的话 有在线的html编辑器，点这里

已在简记-快速记账本中使用，谢谢大家支持。