到今天实现功能, 由iTunes导入文件的应用程序, 并在此文档进行编辑的应用。

就像我们平时经常使用 PDF阅读这样的事情, 们能够自己导入我们的电子书。

源代码下载:https://github.com/colin1994/iTunesTest.git

以下详细介绍下实现过程。

先看效果图。

图1. 未实现功能前, iTunes截图

图2. 实现功能后, iTunes截图

图3. 实现功能后, 执行截图。

好了, 通过图片, 我们能够看到实现的效果。

功能包括: 同意通过iTunes导入文件。

能够查看沙盒下全部文件。

实现过程:

1。

在应用程序的Info.plist文件里加入UIFileSharingEnabled键，并将键值设置为YES。

2。详细代码:

ViewController.h

//
//  ViewController.h
//  iTunesTest
//
//  Created by Colin on 14-6-8.
//  Copyright (c) 2014年 icephone. All rights reserved.
//#import <UIKit/UIKit.h>//step1. 导入QuickLook库和头文件
#import <QuickLook/QuickLook.h>//step2. 继承协议
@interface ViewController : UIViewController<UITableViewDataSource,UITableViewDelegate,QLPreviewControllerDataSource,QLPreviewControllerDelegate,UIDocumentInteractionControllerDelegate>
{//step3. 声明显示列表IBOutlet UITableView *readTable;
}//setp4. 声明变量
//UIDocumentInteractionController : 一个文件交互控制器,提供应用程序管理与本地系统中的文件的用户交互的支持
//dirArray : 存储沙盒子里面的全部文件
@property(nonatomic,retain) NSMutableArray *dirArray;
@property (nonatomic, strong) UIDocumentInteractionController *docInteractionController;
@end

ViewController.m

//
//  ViewController.m
//  iTunesTest
//
//  Created by Colin on 14-6-8.
//  Copyright (c) 2014年 icephone. All rights reserved.
//#import "ViewController.h"@interface ViewController ()@end@implementation ViewController
@synthesize dirArray;
@synthesize docInteractionController;- (void)viewDidLoad
{[super viewDidLoad];//step5. 保存一张图片到设备document目录中(为了測试方便)UIImage *image = [UIImage imageNamed:@"testPic.jpg"];NSData *jpgData = UIImageJPEGRepresentation(image, 0.8);NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);NSString *documentsPath = [paths objectAtIndex:0]; //Get the docs directoryNSString *filePath = [documentsPath stringByAppendingPathComponent:@"testPic.jpg"]; //Add the file name[jpgData writeToFile:filePath atomically:YES]; //Write the file//step5. 保存一份txt文件到设备document目录中(为了測试方便)char *saves = "Colin_csdn";NSData *data = [[NSData alloc] initWithBytes:saves length:10];filePath = [documentsPath stringByAppendingPathComponent:@"colin.txt"];[data writeToFile:filePath atomically:YES];//step6. 获取沙盒里全部文件NSFileManager *fileManager = [NSFileManager defaultManager];//在这里获取应用程序Documents目录里的文件及目录列表NSArray *documentPaths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);NSString *documentDir = [documentPaths objectAtIndex:0];NSError *error = nil;NSArray *fileList = [[NSArray alloc] init];//fileList便是包括有该目录下全部文件的文件名称及目录名的数组fileList = [fileManager contentsOfDirectoryAtPath:documentDir error:&error];self.dirArray = [[NSMutableArray alloc] init];for (NSString *file in fileList){[self.dirArray addObject:file];}//step6. 刷新列表, 显示数据[readTable reloadData];
}//step7. 利用url路径打开UIDocumentInteractionController
- (void)setupDocumentControllerWithURL:(NSURL *)url
{if (self.docInteractionController == nil){self.docInteractionController = [UIDocumentInteractionController interactionControllerWithURL:url];self.docInteractionController.delegate = self;}else{self.docInteractionController.URL = url;}
}#pragma mark- 列表操作
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{return 1;
}- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{static NSString *CellName = @"CellName";UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellName];if (cell == nil){cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellName];cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator;}NSURL *fileURL= nil;NSArray *documentPaths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);NSString *documentDir = [documentPaths objectAtIndex:0];NSString *path = [documentDir stringByAppendingPathComponent:[self.dirArray objectAtIndex:indexPath.row]];fileURL = [NSURL fileURLWithPath:path];[self setupDocumentControllerWithURL:fileURL];cell.textLabel.text = [self.dirArray objectAtIndex:indexPath.row];NSInteger iconCount = [self.docInteractionController.icons count];if (iconCount > 0){cell.imageView.image = [self.docInteractionController.icons objectAtIndex:iconCount - 1];}return cell;
}- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{return [self.dirArray count];
}- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{QLPreviewController *previewController = [[QLPreviewController alloc] init];previewController.dataSource = self;previewController.delegate = self;// start previewing the document at the current section indexpreviewController.currentPreviewItemIndex = indexPath.row;[[self navigationController] pushViewController:previewController animated:YES];//    [self presentViewController:previewController animated:YES completion:nil];
}#pragma mark - UIDocumentInteractionControllerDelegate- (NSString *)applicationDocumentsDirectory
{return [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) lastObject];
}- (UIViewController *)documentInteractionControllerViewControllerForPreview:(UIDocumentInteractionController *)interactionController
{return self;
}#pragma mark - QLPreviewControllerDataSource// Returns the number of items that the preview controller should preview
- (NSInteger)numberOfPreviewItemsInPreviewController:(QLPreviewController *)previewController
{return 1;
}- (void)previewControllerDidDismiss:(QLPreviewController *)controller
{// if the preview dismissed (done button touched), use this method to post-process previews
}// returns the item that the preview controller should preview
- (id)previewController:(QLPreviewController *)previewController previewItemAtIndex:(NSInteger)idx
{NSURL *fileURL = nil;NSIndexPath *selectedIndexPath = [readTable indexPathForSelectedRow];NSArray *documentPaths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);NSString *documentDir = [documentPaths objectAtIndex:0];NSString *path = [documentDir stringByAppendingPathComponent:[self.dirArray objectAtIndex:selectedIndexPath.row]];fileURL = [NSURL fileURLWithPath:path];return fileURL;
}- (void)didReceiveMemoryWarning
{[super didReceiveMemoryWarning];// Dispose of any resources that can be recreated.
}@end