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iOS沙盒目录分析
2019-07-17 16:05 评论:1 阅读:1343 凤翼天翔
ios 沙盒目录

NSString *path = NSHomeDirectory();

上面的代码得到的是应用程序目录的路径,在该目录下有三个文件夹:Documents、Library、temp以及一个.app包!

该目录下就是应用程序的沙盒,应用程序只能访问该目录下的文件夹!!!

请参考下面的例子:

1、

NSString *path1 = NSHomeDirectory();

NSLog(@"path1:%@", path1);

path1:/Users/yuanjun/Library/Application Support/iPhone Simulator/4.2/Applications/172DB70A-145B-4575-A31E-D501AC6EA830

2、

NSString *path2 = [NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES) lastObject];

NSLog(@"path2:%@", path2);

path2:/Users/yuanjun/Library/Application Support/iPhone Simulator/4.2/Applications/172DB70A-145B-4575-A31E-D501AC6EA830/Library/Caches

3、

NSString *path3 = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) lastObject];

NSLog(@"path3:%@", path3);

path3:/Users/yuanjun/Library/Application Support/iPhone Simulator/4.2/Applications/172DB70A-145B-4575-A31E-D501AC6EA830/Documents

4、

NSString *path4 = [NSHomeDirectory() stringByAppendingPathComponent:@"Documents"];

NSLog(@"path4:%@", path4);

path4:/Users/yuanjun/Library/Application Support/iPhone Simulator/4.2/Applications/172DB70A-145B-4575-A31E-D501AC6EA830/Documents

5、

NSString *path5 = [NSHomeDirectory() stringByAppendingPathComponent:@"Library"];

NSLog(@"path5:%@", path5);

path5:/Users/yuanjun/Library/Application Support/iPhone Simulator/4.2/Applications/172DB70A-145B-4575-A31E-D501AC6EA830/Library

6、

NSString *path6 = [NSHomeDirectory() stringByAppendingPathComponent:@"temp"];

NSLog(@"path6:%@", path6);

path6:/Users/yuanjun/Library/Application Support/iPhone Simulator/4.2/Applications/172DB70A-145B-4575-A31E-D501AC6EA830/temp

===================================================

  1. App Home(/AppBane,aoo)。包含App bundle的目录,不要在该路径下写任何文件。

  2. /Documents/。使用该路径放置关键数据,也就是不能通过App重新生成的数据。该路径可通过配置实现iTunes共享文件。可被iTunes备份。(现在保存在该路径下的文件还需要考虑iCloud同步)

  3. /Library/。该路径下一般保存着用户配置文件。可创建子文件夹。可以用来放置您希望被备份但不希望被用户看到的数据。该路径下的文件夹,除Caches以外,都会被iTunes备份。

  4. /tmp/。使用该路径保存临时文件。App应该删除那些不再被使用的文件,系统也会在App关闭后删除残留文件。该路径下的文件不会被iTunes备份。
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