chinwag-android/app/src/main/java/com/keylesspalace/tusky/MainActivity.java

package com.keylesspalace.tusky;

import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.support.design.widget.TabLayout;
import android.support.v4.view.ViewPager;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.support.v7.widget.Toolbar;
import android.view.Menu;
import android.view.MenuItem;

public class MainActivity extends AppCompatActivity {
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
        setSupportActionBar(toolbar);

        TimelinePagerAdapter adapter = new TimelinePagerAdapter(getSupportFragmentManager());
        String[] pageTitles = {
            getString(R.string.title_home),
            getString(R.string.title_notifications),
            getString(R.string.title_public)
        };
        adapter.setPageTitles(pageTitles);
        ViewPager viewPager = (ViewPager) findViewById(R.id.pager);
        viewPager.setAdapter(adapter);
        TabLayout tabLayout = (TabLayout) findViewById(R.id.tab_layout);
        tabLayout.setupWithViewPager(viewPager);
    }

    private void compose() {
        Intent intent = new Intent(this, ComposeActivity.class);
        startActivity(intent);
    }

    private void logOut() {
        SharedPreferences preferences = getSharedPreferences(
                getString(R.string.preferences_file_key), Context.MODE_PRIVATE);
        SharedPreferences.Editor editor = preferences.edit();
        editor.remove("domain");
        editor.remove("accessToken");
        editor.apply();
        Intent intent = new Intent(this, SplashActivity.class);
        startActivity(intent);
        finish();
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.main_toolbar, menu);
        return super.onCreateOptionsMenu(menu);
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        switch (item.getItemId()) {
            case R.id.action_compose: {
                compose();
                return true;
            }
            case R.id.action_logout: {
                logOut();
                return true;
            }
        }
        return super.onOptionsItemSelected(item);
    }
}