NSData NSDate NSString NSArray NSDictionary 相互转化

【NSData NSDate NSString NSArray NSDictionary 相互转化】的更多相关文章

NSData NSDate NSString NSArray NSDictionary 相互转化

// NSData NSDate NSString NSArray NSDictionary json NSString *string = @"hello word"; NSData *data = [string dataUsingEncoding:NSUTF8StringEncoding]; NSArray *array = [NSArray arrayWithObjects:@"1",@"2",@"3",nil…

NSData NSDate NSString NSArray NSDictionary 相互转换

// NSData NSDate NSString NSArray NSDictionary json NSString *string = @"hello word"; NSData *data = [string dataUsingEncoding:NSUTF8StringEncoding]; NSArray *array = [NSArray arrayWithObjects:@"1",@"2",@"3",nil]; N…

Fouandation（NSString ,NSArray,NSDictionary,NSSet）中常见的理解错误区

Fouandation 中常见的理解错误区 1.NSString //快速创建(实例和类方法) 存放的地址是常量区 NSString * string1 = [NSString alloc]initWithString:@“123”]; NSString * string3 = [NSString stringWithString:@“123”]; //格式化方法创建存放地址是堆区 NSString * string2 = [NSString alloc]initWithFormat:@…

Object-C 中各数据类型转换 NSData转NSString，Byte，UIImage

1,NSData 与 NSString NSData --> NSString NSString *aString = [[NSString alloc] initWithData:adata encoding:NSUTF8StringEncoding]; NSString --> NSData NSString *aString = @"1234"; NSData *aData = [aString dataUsingEncoding: NSUTF8StringEncod…

(转)Object-C 中各数据类型转换 NSData转NSString，Byte，UIImage

,NSData 与 NSString NSData --> NSString NSString *aString = [[NSString alloc] initWithData:adata encoding:NSUTF8StringEncoding]; NSString --> NSData NSString *aString = "; NSData *aData = [aString dataUsingEncoding: NSUTF8StringEncoding]; ,NSDat…

Read and Write NSArray, NSDictionary and NSSet to a File

查询地址:http://iosdevelopertips.com/data-file-management/read-and-write-nsarray-nsdictionary-and-nsset-to-a-file.html With just a few lines of code, you can read/write collections to/from files. The code below shows examples for writing and reading both…