archive

gistfile1.txt

    int buf = 0x12121212;
    
    NSData *data=[[NSData alloc]initWithBytes:&buf length:4];  
    NSString *string=[[NSString alloc]initWithString:@"dsfasdf"];  
    NSArray *array=[[NSArray alloc]initWithObjects:@"first",@"second",[NSNumber numberWithInt:123], nil];  
    NSMutableArray *array2=[[NSMutableArray alloc]initWithObjects:@"first",@"second",[NSNumber numberWithInt:123], nil];  
    [array2 addObject:array];
    [array2 addObject:data];
    NSDictionary *dictionary = [[NSDictionary alloc] initWithObjectsAndKeys:@"abc",@"first",@"def",@"second" , nil];

    
    [data writeToFile:@"/Users/admin/Desktop/text1.txt" atomically:YES];  
    [string writeToFile:@"/Users/admin/Desktop/text2.txt" atomically:YES];  
    [array2 writeToFile:@"/Users/admin/Desktop/text3.txt" atomically:YES];  
    [dictionary writeToFile:@"/Users/admin/Desktop/text4.txt" atomically:YES];
    
    NSArray *getArray = [NSArray arrayWithContentsOfFile:@"/Users/admin/Desktop/text3.txt"];
    NSData *data2 = [getArray objectAtIndex:4];
    
    NSData *data3 = [NSData dataWithContentsOfFile:@"/Users/admin/Desktop/text1.txt"];
    NSString *unString = [NSString stringWithContentsOfFile:@"/Users/admin/Desktop/text2.txt" encoding:NSUTF8StringEncoding error:nil];
    
    NSDictionary *undic = [NSDictionary dictionaryWithContentsOfFile:@"/Users/admin/Desktop/text4.txt" ];



http://blog.csdn.net/holydancer/article/details/7371643