IOS加载PDF文件
今天的任务是:在iOS上加载显示pdf文件。
方法一:利用webview
- -(void)loadDocument:(NSString *)documentName inView:(UIWebView *)webView
- {
- NSString *path = [[NSBundle mainBundle] pathForResource:documentName ofType:nil];
- NSURL *url = [NSURL fileURLWithPath:path];
- NSURLRequest *request = [NSURLRequest requestWithURL:url];
- [webView loadRequest:request];
- }
- -(void)loadDocument:(NSString *)documentName inView:(UIWebView *)webView
- {
- NSString *path = [[NSBundle mainBundle] pathForResource:documentName ofType:nil];
- NSURL *url = [NSURL fileURLWithPath:path];
- NSURLRequest *request = [NSURLRequest requestWithURL:url];
- [webView loadRequest:request];
- }
利:1.实现简单
2.还是实现简单
弊:1.仅能浏览,拿不到任何回调,safari不会鸟任何人。
2.固定竖版拖动,想实现翻页动效果就扒瞎
下面的方法可以解决webview 显示pdf的弊,相对的,要付出一些汗水作为代价了。
方法二:利用CGContextDrawPDFPage
- CGPDFDocumentRef GetPDFDocumentRef(NSString *filename)
- {
- CFStringRef path;
- CFURLRef url;
- CGPDFDocumentRef document;
- size_t count;
- path = CFStringCreateWithCString (NULL, [filename UTF8String], kCFStringEncodingUTF8);
- url = CFURLCreateWithFileSystemPath (NULL, path, kCFURLPOSIXPathStyle, 0);
- CFRelease (path);
- document = CGPDFDocumentCreateWithURL (url);
- CFRelease(url);
- count = CGPDFDocumentGetNumberOfPages (document);
- if (count == 0) {
- printf("[%s] needs at least one page!\n", [filename UTF8String]);
- return NULL;
- } else {
- printf("[%ld] pages loaded in this PDF!\n", count);
- }
- return document;
- }
- void DisplayPDFPage (CGContextRef myContext, size_t pageNumber, NSString *filename)
- {
- CGPDFDocumentRef document;
- CGPDFPageRef page;
- document = GetPDFDocumentRef (filename);
- page = CGPDFDocumentGetPage (document, pageNumber);
- CGContextDrawPDFPage (myContext, page);
- CGPDFDocumentRelease (document);
- }
- CGPDFDocumentRef GetPDFDocumentRef(NSString *filename)
- {
- CFStringRef path;
- CFURLRef url;
- CGPDFDocumentRef document;
- size_t count;
- path = CFStringCreateWithCString (NULL, [filename UTF8String], kCFStringEncodingUTF8);
- url = CFURLCreateWithFileSystemPath (NULL, path, kCFURLPOSIXPathStyle, 0);
- CFRelease (path);
- document = CGPDFDocumentCreateWithURL (url);
- CFRelease(url);
- count = CGPDFDocumentGetNumberOfPages (document);
- if (count == 0) {
- printf("[%s] needs at least one page!\n", [filename UTF8String]);
- return NULL;
- } else {
- printf("[%ld] pages loaded in this PDF!\n", count);
- }
- return document;
- }
- void DisplayPDFPage (CGContextRef myContext, size_t pageNumber, NSString *filename)
- {
- CGPDFDocumentRef document;
- CGPDFPageRef page;
- document = GetPDFDocumentRef (filename);
- page = CGPDFDocumentGetPage (document, pageNumber);
- CGContextDrawPDFPage (myContext, page);
- CGPDFDocumentRelease (document);
- }
这样显示出来的pdf单页是倒立的,Quartz坐标系和UIView坐标系不一样所致,调整坐标系,使pdf正立:
- CGContextRef context = UIGraphicsGetCurrentContext();
- CGContextTranslateCTM(context, 80, self.frame.size.height-60);
- CGContextScaleCTM(context, 1, -1);
- CGContextRef context = UIGraphicsGetCurrentContext();
- CGContextTranslateCTM(context, 80, self.frame.size.height-60);
- CGContextScaleCTM(context, 1, -1);
配合iOS5强大的UIPageViewController实现翻页浏览
- - (PDFViewController *)viewControllerAtIndex:(NSUInteger)index
- {
- //Return the PDFViewController for the given index.
- if (([self.pagePDF count] == 0 )|| (index > [self.pagePDF count]) ) {
- return nil;
- }
- //Create a new view controller and pass suitable data.
- PDFViewController *dataViewController = [[PDFViewController alloc]initWithNibName:@"PDFViewController" bundle:nil];
- //dataViewController.pdfview = [self.pagePDF objectAtIndex:index];
- dataViewController.pdfview = [[PDFView alloc]initWithFrame:self.view.frame atPage:index];
- [dataViewController.view addSubview:dataViewController.pdfview];
- NSLog(@"index = %d",index);
- return dataViewController;
- }
- - (NSUInteger) indexOfViewController:(PDFViewController *)viewController
- {
- return [self.pagePDF indexOfObject:viewController.pdfview];
- }
- - (UIViewController *)pageViewController:(UIPageViewController *)pageViewController viewControllerBeforeViewController:(UIViewController *)viewController
- {
- NSUInteger index = [self indexOfViewController:(PDFViewController *)viewController];
- if ((index == 0 ) || (index == NSNotFound)){
- return nil;
- }
- index--;
- return [self viewControllerAtIndex:index];
- }
- - (UIViewController *)pageViewController:(UIPageViewController *)pageViewController viewControllerAfterViewController:(UIViewController *)viewController
- {
- NSUInteger index = [self indexOfViewController:(PDFViewController *)viewController];
- if (index == NSNotFound)
- {
- return nil;
- }
- index++;
- if (index == [self.pagePDF count]){
- return nil;
- }
- return [self viewControllerAtIndex:index];
- }
- -
- (PDFViewController *)viewControllerAtIndex:(NSUInteger)index
- {
- //Return the PDFViewController for the given index.
- if (([self.pagePDF count] == 0 )|| (index > [self.pagePDF count])
- ) {
- return nil;
- }
- //Create a new view controller and pass suitable data.
- PDFViewController *dataViewController = [[PDFViewController
- alloc]initWithNibName:@"PDFViewController" bundle:nil];
- //dataViewController.pdfview = [self.pagePDF objectAtIndex:index];
- dataViewController.pdfview = [[PDFView
- alloc]initWithFrame:self.view.frame atPage:index];
- [dataViewController.view addSubview:dataViewController.pdfview];
- NSLog(@"index = %d",index);
- return dataViewController;
- }
- - (NSUInteger) indexOfViewController:(PDFViewController *)viewController
- {
- return [self.pagePDF indexOfObject:viewController.pdfview];
- }
- - (UIViewController *)pageViewController:(UIPageViewController
- *)pageViewController
- viewControllerBeforeViewController:(UIViewController *)viewController
- {
- NSUInteger index = [self indexOfViewController:(PDFViewController
- *)viewController];
- if ((index == 0 ) || (index == NSNotFound)){
- return nil;
- }
- index--;
- return [self viewControllerAtIndex:index];
- }
- - (UIViewController *)pageViewController:(UIPageViewController
- *)pageViewController viewControllerAfterViewController:(UIViewController
- *)viewController
- {
- NSUInteger index = [self indexOfViewController:(PDFViewController
- *)viewController];
- if (index == NSNotFound)
- {
- return nil;
- }
- index++;
- if (index == [self.pagePDF count]){
- return nil;
- }
- return [self viewControllerAtIndex:index];
- }
后续将完成涂鸦pdf后保存创建新pdf的功能。
转载:http://blog.csdn.net/wanglang3081/article/details/7663624
IOS加载PDF文件的更多相关文章
- cordova程序加载pdf文件的2种方法(ios/android)
前言 公司目前的前端架构是微信端由vue全家桶负责h5网站的单页应用,android端和ios端则选择cordova打包成apk和app.其中,有一个业务逻辑是点击某个链接进入pdf的展示,h5的方案 ...
- Android 如何本地加载pdf文件
大部分app打开pdf文件是通过intent调起手机中能打开pdf文件的工具,来查看pdf文件,如果需求是,用户在app内下载好pdf文件后,不通过第三方的工具,本地打开. 这样的需求要怎么实现呢?上 ...
- iOS 加载pdf格式的文件
可以加载的方式比较多,暂时先总结两种: 本地先导入一份pdf文件 type 1: 利用UIWebView加载 UIWebView *webView = [[UIWebView alloc] initW ...
- 使用 pdf.js 在网页中加载 pdf 文件
在网页中加载并显示PDF文件是最常见的业务需求.例如以下应用场景:(1)在电商网站上购物之后,下载电子发票之前先预览发票.(2)电子商务管理系统中查看发布的公文,公文文件一般是PDF格式的文件. 目前 ...
- .net使用pdfobject.js加载pdf文件
1.下载pdfobject.js文件 2. <script type="text/javascript" src="<%= Application[" ...
- webView 加载本地文件 - html/htm pdf docx tx
- (void)viewDidLoad { [super viewDidLoad]; [self setupUI]; NSString *path = [[NSBundle mainBundle] p ...
- 在iPhoneApp中加载PDF
原文: http://ios.biomsoft.com/2012/02/17/load-a-pdf-file-in-the-iphone-app-smoothly/ 本节将学习如何从服务器加载 pdf ...
- ios – 使用UINib加载xib文件实现UITableViewCell
xib文件的实质是xml,描述界面对象,每个对象都有一个很重要的属性,identity inspector面板中class属性,加载xib文件的时候实际上是实例化界面对象相对应的这些class. xi ...
- Spire.XLS,生成Excel文件、加载Excel文件
一.组件介绍 Spire.XLS是E-iceblue开发的一套基于企业级的专业Office文档处理的组件之一,全称Spire.Office for .NET.旗下有Spire.Doc,Spire XL ...
随机推荐
- js自动类型转换
<script> testeq0 = null == undefined; testeq1 = "0" == 0; //比较前字符串转换为数字 testeq2 = 0 ...
- 文本文件显示 删除文本文件前n个字符
#include<iostream>#include<string.h>using namespace std;void displayContent(const char * ...
- 将jar包发布到nexus仓库
版本的快速迭代不适合release发布到仓库,snapshot方便版本的快速迭代. 1.pom改为snapshot <dependency> <groupId>com.sf.c ...
- PHP双向队列,双端队列代码
<?php /** * User: jifei * Date: 2013-07-30 * Time: 23:12 */ /** * PHP实现双向队列,双端队列 * 双端队列(dequ ...
- 写入Csv
//定义文件输出流 FILE *f; f = fopen("a.csv" , "wb"); fprintf(f,"aaa,23,sdf\n" ...
- c++之旅:函数模板
函数模板 函数模板主要是泛型在函数的中的应用,通过泛型可以让函数处理各种各样的数据类型 简单的列子 #include <iostream> using namespace std; tem ...
- myeclipse 方法上加上@Override就报错的处理方法
在有@Override方法上面会报错如下: The method oncreate(Bundle) of type HelloWorld must override or implement a su ...
- 架构私用Nuget服务器
1.新建一个空的asp.net站点 2.通过nuget引用 Nuget.Server程序集,引用后项目会多出一些文件.修改web.config 里的apikey为你要上传包时用的apikey,我的为: ...
- HCNP学习笔记之HCNP学习的几种境界
前言: 做任何事情都应该遵循一个循序渐进的过程,而这个过程可能是较为枯乏无味的,在我接触的人中主要分为踏实肯学满腹才华和半途而废不思进取两类.故而希望大家成为前者,勿做后者. 第一境界:散漫无序 简单 ...
- WCF的异步调用
1.服务契约 namespace Contracts { [ServiceContract] public interface ICalculator { [OperationContract] do ...