Bullet physics : concave moving shape

I am writing an IOS app with flighter shooting each other on 3D scene. I use bullet physics for collision detection I set the flighter as kinematic object, my logic move the flighter and then update the btMotionState worldTransform of the kinematic object. I also don't get any collision detections until i change the following two statements (set the masking and group to the same for both player and enemy)

dynamicsWorld->addRigidBody(mPlayerObject,1,1);
dynamicsWorld->addRigidBody(mEnemyObject,1,1);
...
dynamicsWorld->setInternalTickCallback(myTickCallback);

then i can see the

void myTickCallback(btDynamicsWorld *world, btScalar timeStep) {
    int numManifolds = world->getDispatcher()->getNumManifolds();
    printf("numManifolds = %d\n",numManifolds);
}

numManifolds value become 1 when object collides.

If I recall correctly, this is not the proper way to draw debug shapes in Bullet. Did you read the user manual (PDF), page 16?

You are supposed to implement your own debug drawer class which implements btIDebugDraw, and in this class you implement the drawLine method.

You pass this debug drawer to bullet with setDebugDrawer, and then enable it with world->getDebugDrawer->setDebugMode(debugMode);

To draw the world, call world->debugDrawWorld();

This then calls drawLine on your custom function numerous times until a wireframe model of the physics world has been drawn.