iOS应用目录

iOS程序都是在沙盒里面运行的，但是具体目录是咋样的呢？我写了个函数，list了所有的目录（包括文件）。咱们先来看一下：

- (void)fileList:(NSString*)directory{
    printf(">>>:%s\n",[directory UTF8String]);
    NSError *error = nil;
    NSFileManager * fileManager = [NSFileManager defaultManager];
    NSArray *fileList = [fileManager contentsOfDirectoryAtPath:directory error:&error]; 
    for (NSString* each in fileList) {
        NSMutableString* path = [[NSMutableString alloc]initWithString:directory];
        [path appendFormat:@"/%@",each];
        [self fileList:path];
        [path release];
    }
}

调用：

[self filelist:NSHomeDirectory()];

来看一下打印结果：

真机：

>>>:/var/mobile/Applications/A3209D39-4D02-40C2-99B4-4111A218CF1F

>>>:/var/mobile/Applications/A3209D39-4D02-40C2-99B4-4111A218CF1F/Directory.app

>>>:/var/mobile/Applications/A3209D39-4D02-40C2-99B4-4111A218CF1F/Directory.app/Directory

>>>:/var/mobile/Applications/A3209D39-4D02-40C2-99B4-4111A218CF1F/Directory.app/Info.plist

>>>:/var/mobile/Applications/A3209D39-4D02-40C2-99B4-4111A218CF1F/Directory.app/PkgInfo

>>>:/var/mobile/Applications/A3209D39-4D02-40C2-99B4-4111A218CF1F/Directory.app/ResourceRules.plist

>>>:/var/mobile/Applications/A3209D39-4D02-40C2-99B4-4111A218CF1F/Directory.app/_CodeSignature

>>>:/var/mobile/Applications/A3209D39-4D02-40C2-99B4-4111A218CF1F/Directory.app/_CodeSignature/CodeResources

>>>:/var/mobile/Applications/A3209D39-4D02-40C2-99B4-4111A218CF1F/Directory.app/embedded.mobileprovision

>>>:/var/mobile/Applications/A3209D39-4D02-40C2-99B4-4111A218CF1F/Directory.app/en.lproj

>>>:/var/mobile/Applications/A3209D39-4D02-40C2-99B4-4111A218CF1F/Directory.app/en.lproj/InfoPlist.strings

>>>:/var/mobile/Applications/A3209D39-4D02-40C2-99B4-4111A218CF1F/Directory.app/en.lproj/ViewController_iPad.nib

>>>:/var/mobile/Applications/A3209D39-4D02-40C2-99B4-4111A218CF1F/Directory.app/en.lproj/ViewController_iPhone.nib

>>>:/var/mobile/Applications/A3209D39-4D02-40C2-99B4-4111A218CF1F/Documents

>>>:/var/mobile/Applications/A3209D39-4D02-40C2-99B4-4111A218CF1F/Library

>>>:/var/mobile/Applications/A3209D39-4D02-40C2-99B4-4111A218CF1F/Library/Caches

>>>:/var/mobile/Applications/A3209D39-4D02-40C2-99B4-4111A218CF1F/Library/Preferences

>>>:/var/mobile/Applications/A3209D39-4D02-40C2-99B4-4111A218CF1F/Library/Preferences/.GlobalPreferences.plist

>>>:/var/mobile/Applications/A3209D39-4D02-40C2-99B4-4111A218CF1F/Library/Preferences/com.apple.PeoplePicker.plist

>>>:/var/mobile/Applications/A3209D39-4D02-40C2-99B4-4111A218CF1F/tmp

模拟器：

>>>:/Users/liuwei/Library/Application Support/iPhone Simulator/5.1/Applications/595FAC37-23AA-434A-84BE-3274C7A8A6F1

>>>:/Users/liuwei/Library/Application Support/iPhone Simulator/5.1/Applications/595FAC37-23AA-434A-84BE-3274C7A8A6F1/Directory.app

>>>:/Users/liuwei/Library/Application Support/iPhone Simulator/5.1/Applications/595FAC37-23AA-434A-84BE-3274C7A8A6F1/Directory.app/Directory

>>>:/Users/liuwei/Library/Application Support/iPhone Simulator/5.1/Applications/595FAC37-23AA-434A-84BE-3274C7A8A6F1/Directory.app/en.lproj

>>>:/Users/liuwei/Library/Application Support/iPhone Simulator/5.1/Applications/595FAC37-23AA-434A-84BE-3274C7A8A6F1/Directory.app/en.lproj/InfoPlist.strings

>>>:/Users/liuwei/Library/Application Support/iPhone Simulator/5.1/Applications/595FAC37-23AA-434A-84BE-3274C7A8A6F1/Directory.app/en.lproj/ViewController_iPad.nib

>>>:/Users/liuwei/Library/Application Support/iPhone Simulator/5.1/Applications/595FAC37-23AA-434A-84BE-3274C7A8A6F1/Directory.app/en.lproj/ViewController_iPhone.nib

>>>:/Users/liuwei/Library/Application Support/iPhone Simulator/5.1/Applications/595FAC37-23AA-434A-84BE-3274C7A8A6F1/Directory.app/Info.plist

>>>:/Users/liuwei/Library/Application Support/iPhone Simulator/5.1/Applications/595FAC37-23AA-434A-84BE-3274C7A8A6F1/Directory.app/PkgInfo

>>>:/Users/liuwei/Library/Application Support/iPhone Simulator/5.1/Applications/595FAC37-23AA-434A-84BE-3274C7A8A6F1/Documents

>>>:/Users/liuwei/Library/Application Support/iPhone Simulator/5.1/Applications/595FAC37-23AA-434A-84BE-3274C7A8A6F1/Library

>>>:/Users/liuwei/Library/Application Support/iPhone Simulator/5.1/Applications/595FAC37-23AA-434A-84BE-3274C7A8A6F1/Library/Caches

>>>:/Users/liuwei/Library/Application Support/iPhone Simulator/5.1/Applications/595FAC37-23AA-434A-84BE-3274C7A8A6F1/Library/Preferences

>>>:/Users/liuwei/Library/Application Support/iPhone Simulator/5.1/Applications/595FAC37-23AA-434A-84BE-3274C7A8A6F1/Library/Preferences/.GlobalPreferences.plist

>>>:/Users/liuwei/Library/Application Support/iPhone Simulator/5.1/Applications/595FAC37-23AA-434A-84BE-3274C7A8A6F1/Library/Preferences/com.apple.PeoplePicker.plist

>>>:/Users/liuwei/Library/Application Support/iPhone Simulator/5.1/Applications/595FAC37-23AA-434A-84BE-3274C7A8A6F1/tmp

分析：

虽然真机和模拟器有点不一样，但是其实是大同小异。NSHomeDirectory() 是获取沙盒的根目录，然后就是他下面的其他目录：Directory.app(Directory是我这个工程的名字)、Documents、Library、tmp，Library下面又有一些子目录等等。

Directory.app 是程序包目录，主要包含和程序相关的文件，Documents你可以自己放一些文件到这个目录下，Library 也是个重要的目录，比如你的NSUserDefaults的数据就是在Libarary下面的Preferences中，还有 Caches 等等，tmp看名字就知道是一个存放临时文件的。我们主要用到的还是documentd和library。

不多说了，要想明白，自己把我的代码copy过去试一下就知道了。