NSData,NSImage,NSDictionary,NSString,NSInteger,Float,NSURL互相转换汇总
2014-11-04 17:36
435 查看
NSString 转换成NSData 对象
NSData 转换成NSString对象
NSData 转换成char*
char* 转换成NSData对象
NSString和NSURL 转换
NSString和NSData转换(即可作json串互相转换)
NSData和NSImage转换
NSData和NSDictionary转换
NSDictionary和JSON转换
NSData* xmlData = [@"testdata" dataUsingEncoding:NSUTF8StringEncoding];
NSData 转换成NSString对象
NSData * data; NSString *result = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
NSData 转换成char*
NSData *data; char *test=[data bytes];
char* 转换成NSData对象
byte* tempData = malloc(sizeof(byte)*16); NSData *content=[NSData dataWithBytes:tempData length:16];
NSString和NSURL 转换
//NSString->NSURL NSString *urlString=[@"http://www.google.com" stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]; NSURL *url=[NSURL URLWithString:urlString]; //NSURL->NSString NSString *urlString=[[url absoluteString] stringByReplacingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
NSString和NSData转换(即可作json串互相转换)
//NSData-> NSString NSString *testString = [[NSString alloc] initWithData:testData encoding:NSUTF8StringEncoding]; //NSString->NSData NSString *aString = @"我是NSString"; NSData *testData = [testString dataUsingEncoding: NSUTF8StringEncoding];
NSData和NSImage转换
//NSData->UIImage UIImage *testImage = [UIImage imageWithData: imageData]; //UIImage->NSData NSData *imageData = UIImagePNGRepresentation(testImage) //或者 NSData *imageData = UIImageJPEGRepresentation(testImage,1.0)
NSData和NSDictionary转换
//NSData-->NSDictionary NSDictionary *testDict = [NSJSONSerialization JSONObjectWithData:testData options:NSJSONReadingMutableContainers error:nil] //或者 NSKeyedUnarchiver *unarchiver = [[NSKeyedUnarchiver alloc] initForReadingWithData:testData]; NSDictionary *myDictionary = [[unarchiver decodeObjectForKey:@"Some Key Value"] retain]; [unarchiver finishDecoding]; //NSDictionay --> NSData NSMutableData *data = [[NSMutableData alloc] init]; NSKeyedArchiver *archiver = [[NSKeyedArchiver alloc] initForWritingWithMutableData:data]; [archiver encodeObject:params forKey:@"Some Key Value"]; [archiver finishEncoding];
NSDictionary和JSON转换
JSON: //这个方法是SBJson类库里的,需要导入SBJson.h NSString *jsonStr=[dict JSONRepresentation]; //或者原生类库中 NSData *data = [NSJSONSerialization dataWithJSONObject:dict options:NSJSONWritingPrettyPrinted error:nil]; NSString *string = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding]; //建议(特别是http取回来的jsonStr转换如下) //JSON->NSDictionary: NSData *jsonData = [testJsonStr dataUsingEncoding:NSUTF8StringEncoding]; NSDictionary *dict = [NSJSONSerialization JSONObjectWithData:jsonData options:NSJSONReadingMutableContainers error:nil]
相关文章推荐
- NSData,NSImage,NSDictionary,NSString,NSInteger,Float,NSURL互相转换汇总
- NSData,NSImage,NSDictionary,NSString,NSInteger,Float,NSURL 等等互相转换
- NSData,NSImage,NSDictionary,NSString,NSInteger,Float,NSURL 等等互相转换
- NSData,NSImage,NSDictionary,NSString,NSInteger,Float,NSURL 等等互相转换
- NSData,NSImage,NSDictionary,NSString,NSInteger,Float,NSURL 等等互相转换
- NSData,NSImage,NSDictionary,NSString,NSURL 等等互相转换
- iOS中NSString,NSData和char的相互转换,JSON串转化为NSDictionary或NSArray
- nsstring 和 int,float互相转换 小数点四舍五入
- IOS开发NSString与int和float的相互转换以及字符串拼接、NSString、NSData、char* 类型之间的转换
- [Cocoa]_[初级]_[NSString 、NSImage、NSData、std::string之间的转换]
- IOS开发NSString与int和float的相互转换以及字符串拼接、NSString、NSData、char* 类型之间的转换
- iPhone NSString NSData char互相转换
- NSString与int和float以及NSInteger的相互转换
- NSString与int和float以及NSInteger的相互转换
- NSString 和 NSURL的互相转换
- IOS开发NSString与int和float的相互转换以及字符串拼接、NSString、NSData、char* 类型之间的转换
- NSString 和 NSURL的互相转换
- NSString 和 NSURL的互相转换
- NSdata 与 NSString,Byte数组,UIImage 的相互转换
- NSString转16进制 NSString转NSData Byte数组 转换成NSString byte数组 转换成NSString