iOS学习之iOS沙盒(sandbox)机制和文件操作1
2016-09-27 14:36
351 查看
[b] iOS学习之iOS沙盒(sandbox)机制和文件操作[/b]
接上篇 iOS学习之iOS沙盒(sandbox)机制和文件操作(一) 我们看看如何获取应用程序沙盒目录。包括真机的沙盒的目录。
1、获取程序的Home目录 [cpp] view plain copy NSString *homeDirectory = NSHomeDirectory(); NSLog(@"path:%@", homeDirectory); 打印结果: [cpp] view plain copy 2012-06-17 14:00:06.098 IosSandbox[3536:f803] /Users/rongfzh/Library/Application Support/iPhone Simulator/5.1/Applications/3B8EC78A-5EEE-4C2F-B0CB-4C3F02B996D2 那在真机上的目录有是怎么样的呢?我们看看 2012-06-17 14:25:47.059 IosSandbox[4281:f803] /var/mobile/Applications/3B8EC78A-5EEE-4C2F-B0CB-4C3F02B996D2 可见,真机上的目录是/var/mobile/Applications/这个目录下的,和模拟器不一样。这个是Home目录,其他的子目录和模拟器一样。
2、获取document目录 [cpp] view plain copy NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES); NSString *path = [paths objectAtIndex:0]; NSLog(@"path:%@", path); 打印结果 [cpp] view plain copy 2012-06-17 14:00:06.099 IosSandbox[3536:f803] path:/Users/rongfzh/Library/Application Support/iPhone Simulator/5.1/Applications/3B8EC78A-5EEE-4C2F-B0CB-4C3F02B996D2/Documents
3、获取Cache目录 [cpp] view plain copy NSArray *paths = NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES); NSString *path = [paths objectAtIndex:0]; NSLog(@"%@", path); 打印结果 [cpp] view plain copy 2012-06-17 14:03:50.431 IosSandbox[3628:f803] /Users/rongfzh/Library/Application Support/iPhone Simulator/5.1/Applications/3B8EC78A-5EEE-4C2F-B0CB-4C3F02B996D2/Library/Caches
4、获取Library目录 [cpp] view plain copy NSArray *paths = NSSearchPathForDirectoriesInDomains(NSLibraryDirectory, NSUserDomainMask, YES); NSString *path = [paths objectAtIndex:0]; NSLog(@"%@", path); 打印结果 [cpp] view plain copy 2012-06-17 14:07:17.544 IosSandbox[3733:f803] /Users/rongfzh/Library/Application Support/iPhone Simulator/5.1/Applications/3B8EC78A-5EEE-4C2F-B0CB-4C3F02B996D2/Library
5、获取Tmp目录 [cpp] view plain copy NSString *tmpDir = NSTemporaryDirectory(); NSLog(@"%@", tmpDir); 打印结果 [cpp] view plain copy 2012-06-17 14:08:07.824 IosSandbox[3782:f803] /var/folders/g7/246bh79130zblw0yjjtc55cw0000gn/T/
6、写入文件 [cpp] view plain copy NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES); NSString *docDir = [paths objectAtIndex:0]; if (!docDir) { NSLog(@"Documents 目录未找到"); } NSArray *array = [[NSArray alloc] initWithObjects:@"内容",@"content",nil]; NSString *filePath = [docDir stringByAppendingPathComponent:@"testFile.txt"]; [array writeToFile:filePath atomically:YES]; 注:我们在真机上也运行一下,把文件写入,下一步从真机上把内容读取出来。 写入输入 array ,里面是两个字符串,一会我们读出来打印。 写入我们在程序沙盒目录下看到文件 testFile.txt 打开文件看到的内容是这样的,是个xml格式的plist文件,数据格式保存了内容。 [cpp] view plain copy
内容 content
7、读取文件 [cpp] view plain copy NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES); NSString *docDir = [paths objectAtIndex:0]; NSString *filePath = [docDir stringByAppendingPathComponent:@"testFile.txt"]; NSArray *array = [[NSArray alloc]initWithContentsOfFile:filePath]; NSLog(@"%@", array); 打印结果: 把上面的文件解析后,把内容打印出来了。 [cpp] view plain copy 2012-06-17 14:14:46.249 IosSandbox[3918:f803] ( "\U5185\U5bb9", content ) 真机上读取并打印文件路径: 2012-06-17 14:25:47.059 IosSandbox[4281:f803] /var/mobile/Applications/3B8EC78A-5EEE-4C2F-B0CB-4C3F02B996D2/Documents/testFile.txt ( "\U5185\U5bb9", content ) 真机上也能写入和打印。
接上篇 iOS学习之iOS沙盒(sandbox)机制和文件操作(一) 我们看看如何获取应用程序沙盒目录。包括真机的沙盒的目录。
1、获取程序的Home目录 [cpp] view plain copy NSString *homeDirectory = NSHomeDirectory(); NSLog(@"path:%@", homeDirectory); 打印结果: [cpp] view plain copy 2012-06-17 14:00:06.098 IosSandbox[3536:f803] /Users/rongfzh/Library/Application Support/iPhone Simulator/5.1/Applications/3B8EC78A-5EEE-4C2F-B0CB-4C3F02B996D2 那在真机上的目录有是怎么样的呢?我们看看 2012-06-17 14:25:47.059 IosSandbox[4281:f803] /var/mobile/Applications/3B8EC78A-5EEE-4C2F-B0CB-4C3F02B996D2 可见,真机上的目录是/var/mobile/Applications/这个目录下的,和模拟器不一样。这个是Home目录,其他的子目录和模拟器一样。
2、获取document目录 [cpp] view plain copy NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES); NSString *path = [paths objectAtIndex:0]; NSLog(@"path:%@", path); 打印结果 [cpp] view plain copy 2012-06-17 14:00:06.099 IosSandbox[3536:f803] path:/Users/rongfzh/Library/Application Support/iPhone Simulator/5.1/Applications/3B8EC78A-5EEE-4C2F-B0CB-4C3F02B996D2/Documents
3、获取Cache目录 [cpp] view plain copy NSArray *paths = NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES); NSString *path = [paths objectAtIndex:0]; NSLog(@"%@", path); 打印结果 [cpp] view plain copy 2012-06-17 14:03:50.431 IosSandbox[3628:f803] /Users/rongfzh/Library/Application Support/iPhone Simulator/5.1/Applications/3B8EC78A-5EEE-4C2F-B0CB-4C3F02B996D2/Library/Caches
4、获取Library目录 [cpp] view plain copy NSArray *paths = NSSearchPathForDirectoriesInDomains(NSLibraryDirectory, NSUserDomainMask, YES); NSString *path = [paths objectAtIndex:0]; NSLog(@"%@", path); 打印结果 [cpp] view plain copy 2012-06-17 14:07:17.544 IosSandbox[3733:f803] /Users/rongfzh/Library/Application Support/iPhone Simulator/5.1/Applications/3B8EC78A-5EEE-4C2F-B0CB-4C3F02B996D2/Library
5、获取Tmp目录 [cpp] view plain copy NSString *tmpDir = NSTemporaryDirectory(); NSLog(@"%@", tmpDir); 打印结果 [cpp] view plain copy 2012-06-17 14:08:07.824 IosSandbox[3782:f803] /var/folders/g7/246bh79130zblw0yjjtc55cw0000gn/T/
6、写入文件 [cpp] view plain copy NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES); NSString *docDir = [paths objectAtIndex:0]; if (!docDir) { NSLog(@"Documents 目录未找到"); } NSArray *array = [[NSArray alloc] initWithObjects:@"内容",@"content",nil]; NSString *filePath = [docDir stringByAppendingPathComponent:@"testFile.txt"]; [array writeToFile:filePath atomically:YES]; 注:我们在真机上也运行一下,把文件写入,下一步从真机上把内容读取出来。 写入输入 array ,里面是两个字符串,一会我们读出来打印。 写入我们在程序沙盒目录下看到文件 testFile.txt 打开文件看到的内容是这样的,是个xml格式的plist文件,数据格式保存了内容。 [cpp] view plain copy
内容 content
7、读取文件 [cpp] view plain copy NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES); NSString *docDir = [paths objectAtIndex:0]; NSString *filePath = [docDir stringByAppendingPathComponent:@"testFile.txt"]; NSArray *array = [[NSArray alloc]initWithContentsOfFile:filePath]; NSLog(@"%@", array); 打印结果: 把上面的文件解析后,把内容打印出来了。 [cpp] view plain copy 2012-06-17 14:14:46.249 IosSandbox[3918:f803] ( "\U5185\U5bb9", content ) 真机上读取并打印文件路径: 2012-06-17 14:25:47.059 IosSandbox[4281:f803] /var/mobile/Applications/3B8EC78A-5EEE-4C2F-B0CB-4C3F02B996D2/Documents/testFile.txt ( "\U5185\U5bb9", content ) 真机上也能写入和打印。
相关文章推荐
- iOS学习之iOS沙盒(sandbox)机制和文件操作
- iOS开发:第一个iOS程序分析——代理,生命周期函数【转】
- iOS10 权限崩溃问题
- iOS 如何查看各个控件对应的key值
- iOS10 后台下载兼容
- iOS开发:Toast for iPhone
- 有关iOS构建版本上传应用
- iOS的主要框架介绍
- xcode编写iphone第一个程序
- Xcode8模拟器警告与iOS10真机调试NSLog无效
- IOS总结 静变量static、全局变量extern、局部变量、实例变量
- nagios监控+pnp4出图
- iOS10 相机相册等权限的使用、检测并引导用户开启权限
- IOS上架提交审核遇到Missing Push Notification Entitlement的问题
- iOS:学习视频看这里就够了(定期更新)
- iOS流媒体开发之三:HLS直播(M3U8)回看和下载功能的实现
- iOS 产生随机数
- iOS开发多线程在实际项目中的运用
- iOS 视频直播(一)
- iOS中16进制转nsdata