In Cocos2d-x (I’m using version 3), there is no built-in method to open an external URL. However, this can be achieved. Here I’m only showing on iOS & Android platform.

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$ cd /path/to/game
$ ls
cocos2d/ proj.ios_mac/ proj.win32/ res/ CMakeLists.txt
proj.android/ proj.linux/ proj.wp8-xaml/ src/

Now, this has to change the cocos2d‘s core files.

iOS

Edit the ./cocos2d/cocos/platform/ios/CCApplication.h

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...
void openURL(const char *url); // ADD THIS LINE
protected:
...

Then edit ./cocos2d/cocos/platform/ios/CCApplication.mm, add the implementation for that method openURL

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...
void Application::openURL(const char *url)
{
NSString *urlString = [NSString stringWithCString:url encoding:NSASCIIStringEncoding];
NSURL *nsURL = [NSURL URLWithString:urlString];
[[UIApplication sharedApplication] openURL:nsURL];
}
NS_CC_END

Android

Edit the ./cocos2d/cocos/platform/android/CCApplication.h

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...
void openURL(const char *url); // ADD THIS LINE
protected:
...

Then edit ./cocos2d/cocos/platform/android/CCApplication.cpp, add the implementation for that method openURL. This will invoke the native Java method.

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...
void Application::openURL(const char *url)
{
JniMethodInfo minfo;
if (JniHelper::getStaticMethodInfo(minfo, "org/cocos2dx/lib/Cocos2dxActivity", "openURL", "(Ljava/lang/String;)V")) {
jstring StringArg1 = minfo.env->NewStringUTF(url);
minfo.env->CallStaticVoidMethod(minfo.classID, minfo.methodID, StringArg1);
minfo.env->DeleteLocalRef(StringArg1);
minfo.env->DeleteLocalRef(minfo.classID);
}
}
NS_CC_END

Lastly edit ./cocos2d/cocos/platform/android/java/src/org/cocos2dx/lib/Cocos2dxActivity.java

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...
// import this 2 classes
import android.content.Intent;
import android.net.Uri;
...
private static Activity me = null; // ADD THIS
public static Context getContext() {
// ...
}
...
@Override
protected void onCreate(final Bundle savedInstanceState) {
...
this.init();
me = this; // ADD THIS AFTER this.init()
...
}
// your openURL implementation
public static void openURL(String url) {
Intent i = new Intent(Intent.ACTION_VIEW);
i.setData(Uri.parse(url));
me.startActivity(i);
}
...

You have done.

How to use?

You can invoke Application::getInstance()->openURL("your url"). e.g.

MyScene.cpp

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switch (Application::getInstance()->getTargetPlatform()) {
case Application::Platform::OS_IPAD:
case Application::Platform::OS_IPHONE:
Application::getInstance()->openURL("http://www.apple.com");
break;
case Application::Platform::OS_ANDROID:
Application::getInstance()->openURL("http://www.google.com");
break;
default:
break;
}

Happy coding :)

Reference: