Android Open Source - detect-me-android Main Activity

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License

The source code is released under:

MIT License

Java Source Code

package com.contexthub.detectme;
/*  w ww  . j  a  v  a2  s  . com*/
import android.os.Bundle;
import android.support.v4.app.FragmentManager;
import android.support.v7.app.ActionBarActivity;
import android.view.Menu;
import android.view.MenuItem;
import android.view.Window;

import com.chaione.contexthub.sdk.model.Beacon;
import com.contexthub.detectme.fragments.AboutFragment;
import com.contexthub.detectme.fragments.BeaconListFragment;
import com.contexthub.detectme.fragments.EditBeaconFragment;


public class MainActivity extends ActionBarActivity implements BeaconListFragment.Listener, FragmentManager.OnBackStackChangedListener {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        requestWindowFeature(Window.FEATURE_INDETERMINATE_PROGRESS);
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        setProgressBarIndeterminate(true);

        getSupportFragmentManager().addOnBackStackChangedListener(this);

        if(savedInstanceState == null) {
            getSupportFragmentManager().beginTransaction()
                    .replace(android.R.id.content, new BeaconListFragment())
                    .commit();
        }
        else {
            setUpNavigationVisibility();
        }
    }

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

    @Override
    public boolean onPrepareOptionsMenu(Menu menu) {
        boolean isMainFragment = getSupportFragmentManager().getBackStackEntryCount() <= 0;
        menu.findItem(R.id.action_add).setVisible(isMainFragment);
        menu.findItem(R.id.action_about).setVisible(isMainFragment);
        return super.onPrepareOptionsMenu(menu);
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        switch(item.getItemId()) {
            case R.id.action_add:
                launchEditBeaconFragment(null);
                return true;
            case R.id.action_about:
                getSupportFragmentManager().beginTransaction()
                        .addToBackStack(null)
                        .replace(android.R.id.content, new AboutFragment())
                        .commit();
                return true;
            default:
                return super.onOptionsItemSelected(item);
        }
    }

    private void launchEditBeaconFragment(Beacon beacon) {
        getSupportFragmentManager().beginTransaction()
                .addToBackStack(null)
                .replace(android.R.id.content, EditBeaconFragment.newInstance(beacon))
                .commit();
    }

    @Override
    public void onItemClick(Beacon beacon) {
        launchEditBeaconFragment(beacon);
    }

    @Override
    public void onBackStackChanged() {
        setUpNavigationVisibility();
        supportInvalidateOptionsMenu();
    }

    private void setUpNavigationVisibility() {
        boolean hasItems = getSupportFragmentManager().getBackStackEntryCount() > 0;
        getSupportActionBar().setDisplayHomeAsUpEnabled(hasItems);
    }
}

Java Source Code List

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