iOS 編碼轉換

標籤：

- (NSString *)SaveFileToDocuments:(NSString *)url{    // NSString *url = @"http://172.28.250.70/ad/20140210151602.jpg";    NSString *FileName = [url lastPathComponent];    NSString *resultFilePath = @"";    if (url.length > 7) {                NSString *destFolderPath = [[NSHomeDirectory() stringByAppendingPathComponent:@"Documents"] stringByAppendingPathComponent:@"IadImages"];        NSString *destFilePath = [destFolderPath stringByAppendingPathComponent:url];        if (! [[NSFileManager defaultManager] fileExistsAtPath:destFolderPath]) { //判斷檔案夾是否存在                        [[NSFileManagerdefaultManager] createDirectoryAtPath:destFolderPath withIntermediateDirectories:YESattributes:nilerror:nil];        }                        if ([[NSFileManager defaultManager] fileExistsAtPath:destFilePath]) { //判斷檔案是否存在                        resultFilePath = destFilePath;        } else {                        NSData *imageData = [NSData dataWithContentsOfURL:[NSURL URLWithString:url]];            if ([imageData writeToFile:destFilePath atomically:YES]) {                resultFilePath = destFilePath;            }            else {                resultFilePath = destFilePath;            }        }    }    return resultFilePath;} - (NSString*)UTF8_To_GB2312:(NSString*)utf8string{    NSStringEncoding encoding =CFStringConvertEncodingToNSStringEncoding(kCFStringEncodingGB_18030_2000);    NSData* gb2312data = [utf8string dataUsingEncoding:encoding];        return [[NSString alloc] initWithData:gb2312data encoding:encoding];}

 

iOS 編碼轉換