Dispose subscriber's on Android

BaseActivity.kt

/**
 * Created by Dinorah Tovar on 8/21/18
 * Base custom activity managing all the disposables
 */

open class BaseActivity : AppCompatActivity() {

    /**
     * Keep reference of the active presenter.
     */
    private var basePresenter: BasePresenter? = null

    /**
     * Dispose all disposables in current activity once it has been deleted.
     * Remove presenter reference.
     */
    override fun onDestroy() {
        super.onDestroy()
        basePresenter?.safeDispose()
        basePresenter = null
    }

    /**
     * Set current active presenter
     */
    fun setPresenter(presenter: BasePresenter?) {
        basePresenter = presenter
    }

}