unity调用ios的参数传入与返回

#if defined (__cplusplus)
extern "C"
{
#endif
BOOL u3d_getBool1(BOOL _input)
{
NSLog(@"_input value:%@",_input?@"Yes":@"No");
return true;
}

BOOL u3d_getBool2(BOOL _input)
{
NSLog(@"_input value:%@",_input?@"Yes":@"No");
return false;
}

int u3d_getInt(int _input)
{
return _input + 100;
}

long u3d_getLong(long _input)
{
return _input + 123l;
}

float u3d_getFloat(float _input)
{
return _input + 0.123f;
}

double u3d_getDouble(double _input)
{
return _input + 0.123456l;
}

char * u3d_getString(const char * _input)
{
NSString *str = [NSString stringWithUTF8String:_input];

NSString *newstr = [NSString stringWithFormat:@"%@--%@", str, @"_fromOC"];
const char * _output = [newstr UTF8String];

NSLog(@"%@, %@, %s",str,newstr,_output);

// 是里如果直接返回_output是会报错的，因为它是是const，不能被返回。
char* res = (char*)malloc(strlen(_output)+1);
strcpy(res, _output);

return res;
}

// 封装json
void u3d_packageJosn()
{
// 构造一个nsdictionary
NSDictionary *dict = @{
@"name":@"小海",
@"age":@102,
@"weight":@56.5f,
@"height":@165.555f,
@"nice":@YES
};
// 判断dict是否可转成json
BOOL isYes = [NSJSONSerialization isValidJSONObject:dict];
NSLog(@"u3d_packageJosn isYes : %@",isYes?@"Yes":@"No");

// nsdictionary --> nsdata
NSData *data = [NSJSONSerialization dataWithJSONObject:dict options:kNilOptions error:nil];
NSLog(@"u3d_packageJosn data: %@", data);

// nsdata -> nsstring
NSString *jsonString = [[NSString alloc]initWithData:data encoding:NSUTF8StringEncoding];
NSLog(@"u3d_packageJosn jsonString: %@", jsonString);

// nsstring -> const char*
const char* constStr = [jsonString UTF8String];

// 调用unity3d中的方法
UnitySendMessage("Main Camera", "CallbackFormIOS_1", constStr);
}

// 解析json
void u3d_parseJson(const char * jsonStr)
{
// const char* --> nnstring
NSString *jsonString = [NSString stringWithUTF8String:jsonStr];
NSLog(@"u3d_parseJson jsonString: %@", jsonString);

// nsstring -> nsdata
NSData *data = [jsonString dataUsingEncoding:NSUTF8StringEncoding];
NSLog(@"u3d_parseJson data: %@", data);

// nsdata -> nsdictionary
NSDictionary *dict = [NSJSONSerialization JSONObjectWithData:data options:kNilOptions error:nil];
NSLog(@"u3d_parseJson dict: %@",dict);
NSLog(@"dict - name: %@",dict[@"name"]);
NSLog(@"dict - age: %@",dict[@"age"]);
NSLog(@"dict - weight: %@",dict[@"weight"]);
NSLog(@"dict - height: %@",dict[@"height"]);
NSLog(@"dict - nice: %@",dict[@"nice"]);
}
#if defined (__cplusplus)
}
#endif

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using System.Runtime.InteropServices;

public class IOSLibraryBridge
{

#if UNITY_IOS || UNITY_IPHONE

[DllImport("__Internal")]
private static extern bool u3d_getBool1 (bool _input);

[DllImport("__Internal")]
private static extern bool u3d_getBool2 (bool _input);

[DllImport("__Internal")]
private static extern int u3d_getInt (int _input);

[DllImport("__Internal")]
private static extern long u3d_getLong (long _input);

[DllImport("__Internal")]
private static extern float u3d_getFloat (float _input);

[DllImport("__Internal")]
private static extern double u3d_getDouble (double _input);

[DllImport("__Internal")]
private static extern string u3d_getString (string _input);

[DllImport("__Internal")]
private static extern void u3d_packageJosn ();

[DllImport("__Internal")]
private static extern void u3d_parseJson (string _input);
#endif

public static bool getBool1 (bool _input)
{
#if UNITY_IOS || UNITY_IPHONE
return u3d_getBool1(_input);
#else
return false;
#endif
}

public static bool getBool2 (bool _input)
{
#if UNITY_IOS || UNITY_IPHONE
return u3d_getBool2(_input);
#else
return false;
#endif
}

public static int getInt (int _input)
{
#if UNITY_IOS || UNITY_IPHONE
return u3d_getInt(_input);
#else
return 0;
#endif
}

public static long getLong (long _input)
{
#if UNITY_IOS || UNITY_IPHONE
return u3d_getLong(_input);
#else
return 0L;
#endif
}

public static float getFloat (float _input)
{
#if UNITY_IOS || UNITY_IPHONE
return u3d_getFloat(_input);
#else
return 0f;
#endif
}

public static double getDouble (double _input)
{
#if UNITY_IOS || UNITY_IPHONE
return u3d_getDouble(_input);
#else
return 0d;
#endif
}

public static string getString (string _input)
{
#if UNITY_IOS || UNITY_IPHONE
return u3d_getString(_input);
#else
return "--empty--";
#endif
}

public static void packageJson ()
{
#if UNITY_IOS || UNITY_IPHONE
u3d_packageJosn();
#endif
}

public static void parseJson (string _input)
{
#if UNITY_IOS || UNITY_IPHONE
u3d_parseJson(_input);
#endif
}
}

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class Test : MonoBehaviour {

// Use this for initialization
void Start () {
bool b1 = IOSLibraryBridge.getBool1 (true);
Debug.Log ("b1:" + b1);
bool b2 = IOSLibraryBridge.getBool2 (false);
Debug.Log ("b2:" + b2);
int int1 = IOSLibraryBridge.getInt (10);
Debug.Log ("int1:" + int1);
long long1 = IOSLibraryBridge.getLong (10L);
Debug.Log ("long1:" + long1);
float float1 = IOSLibraryBridge.getFloat (10f);
Debug.Log ("float1:" + float1);
double double1 = IOSLibraryBridge.getDouble (10d);
Debug.Log ("double1:" + double1);
string string1 = IOSLibraryBridge.getString ("hello");

IOSLibraryBridge.packageJson ();
string json = "{\"age\":102,\"weight\":65.5,\"name\":\"阿海\",\"height\":175.555,\"nice\":true}";
IOSLibraryBridge.parseJson (json);
}

void CallbackFormIOS_1(string jsonStr)
{
Debug.Log("CallbackFormIOS_1: " + jsonStr);
LitJson.JsonData jd = LitJson.JsonMapper.ToObject (jsonStr);
if (jd != null)
{
string name = jd ["name"].ToString ();
int age = int.Parse(jd ["age"].ToString());

float weight = float.Parse(jd ["weight"].ToString());
float height = float.Parse(jd ["height"].ToString());
bool nice = bool.Parse(jd ["nice"].ToString());

Debug.Log(string.Format("name={0},age={1},weight={2},height={3},nice={4},",name,age,weight,height,nice));
}
}
}