1、上傳表情到后臺 Unicode編碼

?????NSString *uniStr = [NSString stringWithUTF8String:[comments UTF8String]];

? ? NSData *uniData = [uniStr dataUsingEncoding:NSNonLossyASCIIStringEncoding];

? ? NSString *goodStr = [[NSString alloc] initWithData:uniData encoding:NSUTF8StringEncoding] ;

2、顯示后臺返回的表情 Unicode 解碼

?????NSString *str = comments;

? ? constchar *jsonString = [str UTF8String];? // Emoji表情編解碼

? ? NSData *jsonData = [NSData dataWithBytes:jsonString length:strlen(jsonString)];

? ? NSString *goodMsg1 = [[NSString alloc] initWithData:jsonData ?encoding:NSNonLossyASCIIStringEncoding];

注：comments 上傳字符串