Java tutorial
package brian.chisholm.test.helloworldmap; import android.app.AlertDialog; import android.content.DialogInterface; import android.location.Location; import android.os.Bundle; import android.support.v4.app.FragmentTransaction; import android.support.v7.app.ActionBarActivity; import android.view.Menu; import android.view.MenuItem; import com.google.android.gms.common.GooglePlayServicesUtil; import brian.chisholm.test.helloworldmap.model.OfficeLocation; /** * Created by bchisholm on 8/13/2015. */ public class MainActivity extends ActionBarActivity { public Location mLastLocation; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); getSupportActionBar().setTitle(getString(R.string.office_locations)); getSupportActionBar().setDisplayHomeAsUpEnabled(false); MainActivityFragment fragment = new MainActivityFragment(); getSupportFragmentManager().beginTransaction().add(R.id.container, fragment).commit(); } @Override public boolean onCreateOptionsMenu(Menu menu) { getMenuInflater().inflate(R.menu.menu_main, menu); super.onCreateOptionsMenu(menu); return true; } @Override public boolean onOptionsItemSelected(MenuItem item) { int id = item.getItemId(); switch (id) { case android.R.id.home: onBackPressed(); break; case R.id.action_legal: AlertDialog.Builder alertDialogBuilder = new AlertDialog.Builder(MainActivity.this); alertDialogBuilder .setMessage(GooglePlayServicesUtil.getOpenSourceSoftwareLicenseInfo(MainActivity.this)) .setCancelable(false) .setNeutralButton(getString(R.string.ok), new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int id) { dialog.cancel(); } }); AlertDialog alertDialog = alertDialogBuilder.create(); alertDialog.show(); break; } return super.onOptionsItemSelected(item); } public void getLocationDetails(OfficeLocation officeLocation) { getSupportActionBar().setDisplayHomeAsUpEnabled(true); getSupportActionBar().setTitle(officeLocation.getName()); LocationDetailsFragment ldf = new LocationDetailsFragment(); Bundle args = new Bundle(); args.putSerializable("location", officeLocation); ldf.setArguments(args); FragmentTransaction transaction = getSupportFragmentManager().beginTransaction(); transaction.setCustomAnimations(R.anim.slide_in, R.anim.slide_out, R.anim.pop_slide_in, R.anim.pop_slide_out); ; transaction.replace(R.id.container, ldf); transaction.addToBackStack(null); transaction.commit(); } @Override public void onBackPressed() { getSupportActionBar().setDisplayHomeAsUpEnabled(false); if (getSupportFragmentManager().getBackStackEntryCount() > 1) { while (getSupportFragmentManager().getBackStackEntryCount() > 1) { super.onBackPressed(); } } getSupportActionBar().setTitle(getResources().getString(R.string.office_locations)); super.onBackPressed(); } }