mizo0203/nature-remo-sample-android-kotlin

/*
 * Copyright 2019, Satoki Mizoguchi
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.mizo0203.natureremoapisample

import android.os.Bundle
import android.view.MenuItem
import androidx.appcompat.app.AppCompatActivity
import androidx.core.view.GravityCompat
import androidx.drawerlayout.widget.DrawerLayout
import com.mizo0203.natureremoapisample.util.obtainViewModel
import com.mizo0203.natureremoapisample.util.replaceFragmentInActivity


class MainActivity : AppCompatActivity() {

    private lateinit var drawerLayout: DrawerLayout

    private lateinit var viewModel: MainViewModel

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)

        setupViewFragment()

        viewModel = obtainViewModel()
    }

    private fun setupViewFragment() {
        supportFragmentManager.findFragmentById(R.id.contentFrame)
                ?: replaceFragmentInActivity(MainFragment.newInstance(), R.id.contentFrame)
    }

    override fun onOptionsItemSelected(item: MenuItem) =
            when (item.itemId) {
                android.R.id.home -> {
                    // Open the navigation drawer when the home icon is selected from the toolbar.
                    drawerLayout.openDrawer(GravityCompat.START)
                    true
                }
                else -> super.onOptionsItemSelected(item)
            }

    fun obtainViewModel(): MainViewModel = obtainViewModel(MainViewModel::class.java)
}