edu.uwp.alga.MainActivity.java Source code

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Here is the source code for edu.uwp.alga.MainActivity.java

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package edu.uwp.alga;

/**
 * Copyright 2015 UW-Parkside, Harleen Kaur, Hanh Le, Francisco Mateo
 *
 * 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..
 */

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

import edu.uwp.alga.settings.PreferencesActivity;
import edu.uwp.alga.adapter.SectionsPagerAdapter;
import edu.uwp.alga.utils.SnackbarFactory;

public class MainActivity extends AppCompatActivity {

    /**
     * The {@link android.support.v4.view.PagerAdapter} that will provide fragments for each of the
     * sections. We use a {@link FragmentPagerAdapter} derivative, which will keep every loaded
     * fragment in memory. If this becomes too memory intensive, it may be best to switch to a
     * {@link android.support.v4.app.FragmentStatePagerAdapter}.
     */
    private SectionsPagerAdapter mSectionsPagerAdapter;
    private int REQUEST_CODE = 101;
    /**
     * The {@link ViewPager} that will host the section contents.
     */
    private ViewPager mViewPager;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        // setToolbar();
        setFragmentPagers();
        setTabLayout();

    }

    private void setFragmentPagers() {
        // Create the adapter that will return a fragment for each of the three
        // primary sections of the activity.
        mSectionsPagerAdapter = new SectionsPagerAdapter(getSupportFragmentManager());

        // Set up the ViewPager with the sections adapter.
        mViewPager = (ViewPager) findViewById(R.id.container);
        mViewPager.setAdapter(mSectionsPagerAdapter);
        Intent intent = getIntent();
        if (intent.getBooleanExtra("toData", false)) {
            mViewPager.setCurrentItem(1);
        }

    }

    /**
     * {@inheritDoc}
     */
    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.menu_main, menu);
        return true;
    }

    /**
     * Handle action bar item click events. The action bar will automatically handle clicks on the
     * Home/Up button, so long as the parent activity is specified in the AndroidManifest.xml.
     * @param item The {@link MenuItem} clicked
     * @return boolean True on success, false on fail.
     */
    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        switch (item.getItemId()) {
        case R.id.action_about:
            SnackbarFactory.create(this, findViewById(R.id.main_content), getString(R.string.action_about_pushed))
                    .show();
            return true;
        case R.id.action_settings:
            startActivity(new Intent(this, PreferencesActivity.class));
            return true;
        case R.id.home:
            NavUtils.navigateUpFromSameTask(this);
            return true;
        }
        return super.onOptionsItemSelected(item);
    }

    /**
     * The {@link Toolbar} is a generalization of {@link ActionBar} for use within application layouts.
     */
    /* private void setToolbar() {
    final Toolbar mToolbar = (Toolbar) findViewById(R.id.toolbar);
    setSupportActionBar(mToolbar);
     }*/

    private void setTabLayout() {
        final TabLayout tabLayout = (TabLayout) findViewById(R.id.tabs);
        tabLayout.setupWithViewPager(mViewPager);

        // Make it swipeable, otherwise they will be squished together.
        //tabLayout.setTabMode(TabLayout.MODE_SCROLLABLE);
    }

    @Override
    public void onBackPressed() {
        super.onBackPressed();
        if (mViewPager.getCurrentItem() == 0) {
            Intent intent = new Intent(Intent.ACTION_MAIN);
            intent.addCategory(Intent.CATEGORY_HOME);
            intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);//***Change Here***
            startActivity(intent);
            finish();
            System.exit(0);
        }

    }

}