app/src/main/kotlin/com/yodle/android/kotlindemo/activity/BaseActivity.kt


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package com.yodle.android.kotlindemo.activity

import android.os.Bundle
import android.support.v7.app.AppCompatActivity
import android.view.MenuItem
import rx.Observable
import rx.Observer
import rx.android.schedulers.AndroidSchedulers
import rx.schedulers.Schedulers
import rx.subscriptions.CompositeSubscription

abstract class BaseActivity : AppCompatActivity() {

    val compositeSubscription = CompositeSubscription()

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
    }

    override fun onOptionsItemSelected(item: MenuItem): Boolean {
        when (item.itemId) {
            android.R.id.home -> {
                onBackPressed()
                return true
            }
        }
        return super.onOptionsItemSelected(item)
    }

    override fun onDestroy() {
        super.onDestroy()
        compositeSubscription.unsubscribe()
    }

    fun <T> subscribe(observable: Observable<T>, observer: Observer<T>) {
        compositeSubscription.add(
                observable.subscribeOn(Schedulers.io())
                        .observeOn(AndroidSchedulers.mainThread())
                        .subscribe(observer)
        )
    }
}