net.evenh.chargingstations.MainActivity.java Source code

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Here is the source code for net.evenh.chargingstations.MainActivity.java

Source

package net.evenh.chargingstations;

import android.app.ActionBar;
import android.app.AlertDialog;
import android.app.Dialog;
import android.app.FragmentTransaction;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.pm.PackageInfo;
import android.content.pm.PackageManager;
import android.os.Bundle;
import android.preference.PreferenceManager;
import android.provider.Settings;
import android.support.v4.app.FragmentActivity;
import android.support.v4.view.ViewPager;
import android.view.Menu;
import android.view.MenuItem;
import com.google.android.gms.common.ConnectionResult;
import com.google.android.gms.common.GooglePlayServicesUtil;
import net.evenh.chargingstations.util.RefreshState;
import net.evenh.chargingstations.util.Utils;
import net.evenh.chargingstations.views.adapters.TabPagerAdapter;

/**
 * The main activity, displaying tabs
 *
 * @author Even Holthe
 * @since 1.0.0
 */
public class MainActivity extends FragmentActivity {
    private static final String TAG = "MainActivity";
    private ViewPager Tab;
    private TabPagerAdapter TabAdapter;
    private ActionBar actionBar;

    private Dialog dialog;

    private boolean hasClicked = false;

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

        // Set default values
        PreferenceManager.setDefaultValues(this, R.xml.preferences, false);

        // Check for internet connectivity
        dialog = new AlertDialog.Builder(this).setTitle(R.string.internet_dialog_title)
                .setMessage(R.string.internet_dialog_message).setCancelable(true)
                .setNegativeButton(R.string.internet_dialog_cancel, new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        finish();
                    }
                }).setPositiveButton(R.string.internet_dialog_ok, new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        if (!hasClicked) {
                            hasClicked = true;
                            startActivity(new Intent(Settings.ACTION_WIRELESS_SETTINGS));
                            hasClicked = false;
                        }
                    }
                }).create();

        // Check for Google Play Services
        int status = GooglePlayServicesUtil.isGooglePlayServicesAvailable(getApplicationContext());
        if (status == ConnectionResult.SUCCESS) {
            TabAdapter = new TabPagerAdapter(getFragmentManager());
            Tab = (ViewPager) findViewById(R.id.pager);
            Tab.setOnPageChangeListener(new ViewPager.SimpleOnPageChangeListener() {
                @Override
                public void onPageSelected(int position) {
                    actionBar = getActionBar();
                    actionBar.setSelectedNavigationItem(position);
                }
            });

            Tab.setAdapter(TabAdapter);
            actionBar = getActionBar();

            //Enable Tabs on Action Bar
            if (actionBar != null)
                actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);

            ActionBar.TabListener tabListener = new ActionBar.TabListener() {
                @Override
                public void onTabReselected(android.app.ActionBar.Tab tab, FragmentTransaction ft) {
                }

                @Override
                public void onTabSelected(ActionBar.Tab tab, FragmentTransaction ft) {
                    Tab.setCurrentItem(tab.getPosition());
                }

                @Override
                public void onTabUnselected(android.app.ActionBar.Tab tab, FragmentTransaction ft) {
                }
            };

            //Add New Tab
            actionBar.addTab(actionBar.newTab().setText(R.string.near_me).setIcon(R.drawable.ic_action_place)
                    .setTabListener(tabListener));
            actionBar.addTab(actionBar.newTab().setText(R.string.search).setIcon(R.drawable.ic_action_search)
                    .setTabListener(tabListener));
        } else {
            // Google Play Services error handling
            Dialog dialog = GooglePlayServicesUtil.getErrorDialog(status, this, -1);
            dialog.show();
        }
    }

    @Override
    protected void onResume() {
        super.onResume();
        if (!Utils.hasInternet(this)) {
            dialog.show();
        }
    }

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

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        switch (item.getItemId()) {
        case R.id.action_settings:
            Intent settingsIntent = new Intent(this, SettingsActivity.class);
            startActivity(settingsIntent);
            return true;

        case R.id.action_about:
            displayAboutBox();
            return true;
        }

        return super.onOptionsItemSelected(item);
    }

    /**
     * Displays an about box containing Nobil's license
     *
     * @author Even Holthe
     * @since 1.0.0
     */
    private void displayAboutBox() {
        String version = "0.0.1";
        PackageManager manager = getPackageManager();
        try {
            PackageInfo info = manager.getPackageInfo(getPackageName(), 0);
            version = info.versionName;
        } catch (PackageManager.NameNotFoundException nnfe) {
        }

        StringBuilder sb = new StringBuilder("");
        sb.append(getResources().getString(R.string.app_name) + " ");
        sb.append(String.format(getResources().getString(R.string.version), version) + "\n\n");

        sb.append(getResources().getString(R.string.about_message1) + "\n\n");
        sb.append(getResources().getString(R.string.about_message2) + "\n");

        Dialog about = new AlertDialog.Builder(this).setTitle(R.string.about).setMessage(sb.toString())
                .setPositiveButton(R.string.internet_dialog_ok, new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        dialog.dismiss();
                    }
                }).create();

        about.show();
    }

    @Override
    public void onBackPressed() {
        super.onBackPressed();
        RefreshState.getInstance().setRefreshed(false);
    }
}