How to improve fragment loading speed?

Question

Performance Enhancement:

Previously I saved ALL images in drawable folder, this might be the reason why the map first l

Answer 1

Just to add to @Xyaren's answer, I needed it to work for SupportFragment which seemed to require some extra steps. Have your activity implement OnMapReadyCallback.

In your onCreate:

new Thread(() -> {
    try {
        SupportMapFragment mf = SupportMapFragment.newInstance();
        getSupportFragmentManager().beginTransaction()
                .add(R.id.dummy_map_view, mf)
                .commit();
        runOnUiThread(() -> mf.getMapAsync(SplashActivity.this));
    }catch (Exception ignored){
        Timber.w("Dummy map load exception: %s", ignored);
    }
}).start();

You'll have to implement this:

@Override
public void onMapReady(GoogleMap googleMap) {
    // Do nothing because we only want to pre-load map.
    Timber.d("Map loaded: %s", googleMap);
}

and in your activity layout:

It needs to go through all the steps including the transaction for Google Play Services to download the map data.