Haxe/hxcpp @:native bindings for Chartboost

Make sure you are using Java 1.7. (you can use the command javac -version to check the version and use jenv to handle multiple Java versions on your machine if needed). Build lib/java/build.hxml then drag the output chartboost_delegate.jar into your Android Studio project and add it as library. This little jar redirects all the chartboost delegate calls to Haxe through JNI.

Set up your android project following the SDK doc. Also, set the chartboost delegate right after Chartboost.onCreate(this);.

public void onCreate(Bundle savedInstanceState) {
    
    super.onCreate(savedInstanceState);

    Chartboost.startWithAppId(this, "your-app-id", "your-app-signature");
    Chartboost.onCreate(this);
	
	// chartboost.ChartboostDelegate is from chartboost_delegate.jar
    Chartboost.setDelegate(new chartboost.ChartboostDelegate());
}
/* ... other overrides */

Set up your XCode project following the SDK doc.

In order to help hxcpp compile, put a copy of Chartboost.framework under linc_chartboost/lib

// note that on android, the appId and appSignature here is not used
// because they are initialized in Java (See prepare section).
// But the parameters are kept here just for cross-platform consistency
Chartboost.startWithAppId("your-app-id", "your-app-signature", {
	didCacheRewardedVideo: function(location:String) trace("didCacheRewardedVideo", location),
	didCompleteRewardedVideo: function(location:String, reward:Int) trace("didCompleteRewardedVideo", location, reward),
});

Chartboost.cacheRewardedVideo('Default');
trace(Chartboost.hasRewardedVideo('Default'));
Chartboost.showRewardedVideo('Default');

On android it requires SDL because it uses SDL_AndroidGetJNIEnv() to fetch the Java VM environment for all the JNI stuffs. However, I believe it can be easily replaced by other equivalent functions if you don't use SDL.