/** Restore visible state (generally after a call to pause). Appropriate for Activity.onResume. */
public void resume() {
setWillNotDraw(false);
updateViewport();
mTileCanvasViewGroup.updateTileSet(mDetailLevelManager.getCurrentDetailLevel());
requestRender();
requestLayout();
}
@Override
public void onDetailLevelChanged(DetailLevel detailLevel) {
requestRender();
mTileCanvasViewGroup.updateTileSet(detailLevel);
}