Object-c 调用unity的 UIViewController和UnitySendMessage

.mm文件中实现

#import <UIKit/UIKit.h>

extern UIViewController *UnityGetGLViewController();
extern "C" void UnitySendMessage(const char *, const char *, const char *);

@interface UniWebViewToolBar : NSObject

@end

@implementation UniWebViewToolBar

@end

访问unityView

UIView *unityView = UnityGetGLViewController().view;

[unityView addSubview:webView];

发送消息

UnitySendMessage([webViewName UTF8String], "ClickBack", "");

C与Object-c字符串互转

NSString* MakeNSString (const char* string) {
    if (string) {
        return [NSString stringWithUTF8String: string];
    } else {
        return [NSString stringWithUTF8String: ""];
    }
}

char* MakeCString(NSString *str) {
    const char* string = [str UTF8String];
    if (string == NULL) {
        return NULL;
    }

    char* res = (char*)malloc(strlen(string) + 1);
    strcpy(res, string);
    return res;
}