沙盒模型

1，常用目录的获取

 //沙盒所在的根目录
        NSString *homeDirectory = NSHomeDirectory();
        NSLog(@"path:%@", homeDirectory);
        
        //应用程序路径
        NSString*appPath = [[NSBundle mainBundle] resourcePath];
        NSLog(@"path:%@", appPath);
        //document目录
        NSArray *docPaths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
        NSString *documentPaths = [docPaths objectAtIndex:0];
        NSLog(@"path:%@", documentPaths);
        
        //Cache目录
        NSArray *cacPaths = NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES);
        NSString *cachePath = [cacPaths objectAtIndex:0];
        NSLog(@"%@", cachePath);
        
        //获取Library目录
        NSArray *libPaths = NSSearchPathForDirectoriesInDomains(NSLibraryDirectory, NSUserDomainMask, YES);
        NSString *libraryPath = [libPaths objectAtIndex:0];
        NSLog(@"%@", libraryPath);
        
        //获取Tmp目录
        NSString *tmpDir = NSTemporaryDirectory();
        NSLog(@"%@", tmpDir);

2015-11-29 23:27:54.904 file[1338:162595] path:/Users/wang

2015-11-29 23:27:54.904 file[1338:162595] path:/Users/wang/Library/Developer/Xcode/DerivedData/file-clrabutrnxrhkncilvhdiysmqvir/Build/Products/Debug/file.app/Contents/Resources

2015-11-29 23:27:54.904 file[1338:162595] path:/Users/wang/Documents

2015-11-29 23:27:54.904 file[1338:162595] /Users/wang/Library/Caches

2015-11-29 23:27:54.904 file[1338:162595] /Users/wang/Library

2015-11-29 23:27:54.905 file[1338:162595] /var/folders/gg/cc6n2tms01j48j3l9g6sph100000gp/T/

2，利用系统进行沙盒存储，

    //利用系统进行数据的归档和解档操作
    NSArray *arr = [NSArray arrayWithObjects:@1,@"你好",@3, nil];
    
    NSString* filePath=[NSHomeDirectory() stringByAppendingPathComponent:@"test2.txt"];
   //归档数据
   BOOL success= [NSKeyedArchiver archiveRootObject:arr toFile:filePath];
    //接档
   NSArray *array=[NSKeyedUnarchiver unarchiveObjectWithFile:filePath];
    for (NSString *str1 in array){
        NSLog(@"%@",str1);
    }

2015-11-29 23:30:01.239 file[1352:163601] 1

2015-11-29 23:30:01.239 file[1352:163601] 你好

2015-11-29 23:30:01.239 file[1352:163601] 3

3，沙盒存储不同类型的数据

//文件归档操作
    NSArray *array = [NSArray arrayWithObjects:@1,@2,@"中文", nil];
    NSInteger integer = 10;
    BOOL archiverBool = YES;
    
    
    /*------对象归档--------------------*/
    NSMutableData *data = [NSMutableData data];
    
    NSKeyedArchiver *archiver = [[NSKeyedArchiver alloc] initForWritingWithMutableData:data];
    
    //对多个对象编码归档，key是解档时对象的标识符，可任意编写
    //encode有多个重载，但并不是任何系统对象都有重载方法
    [archiver encodeObject:array forKey:@"arr"];
    [archiver encodeInteger:integer forKey:@"integer"];
    [archiver encodeBool:archiverBool forKey:@"archiverBool"];
    //完成编码
    [archiver finishEncoding];
    
    NSString *filepath = [NSHomeDirectory() stringByAppendingPathComponent:@"1.txt"];
    
    //将data以原子操作方式写入文件
    BOOL success = [data writeToFile:filepath atomically:YES];
    
    if (success) {
        NSLog(@"归档成功");
    }
    /*------对象归档--------------------*/
    
    /*------对象解档--------------------*/
    //将文件数据加载入NSData对象
    NSData *data2 = [NSData dataWithContentsOfFile:filepath];
    
    //使用NSData对象初始化接档器
    NSKeyedUnarchiver *unarchiver = [[NSKeyedUnarchiver alloc] initForReadingWithData:data2];
    
    //根据归档时的类型和key解档对应数据
    NSArray *arr2 = [unarchiver decodeObjectForKey:@"arr"];
    NSInteger integer2 = [unarchiver decodeIntegerForKey:@"integer"];
    BOOL unarchiveBool = [unarchiver decodeBoolForKey:@"archiveBool"];
    
    NSLog(@"%@",arr2);
    NSLog(@"%ld",integer2);
    NSLog(@"%d",unarchiveBool);
    /*------对象接档--------------------*/

2015-11-29 23:31:17.078 file[1366:164679] 归档成功

2015-11-29 23:31:17.079 file[1366:164679] (

"\U4e2d\U6587"

)

2015-11-29 23:31:17.079 file[1366:164679] 10

2015-11-29 23:31:17.079 file[1366:164679] 0

自定义归档数据，以前再总结

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