Android Open Source - utexas-utilities Balance Activity

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Back to project page utexas-utilities.

License

The source code is released under:

Apache License

Java Source Code

package com.nasageek.utexasutilities.activities;
//ww w  .ja va2 s  .c o  m
import android.content.SharedPreferences;
import android.os.Bundle;
import android.preference.PreferenceManager;
import android.support.v4.view.ViewPager;

import com.actionbarsherlock.app.ActionBar;
import com.actionbarsherlock.app.SherlockFragment;
import com.actionbarsherlock.app.SherlockFragmentActivity;
import com.actionbarsherlock.view.Menu;
import com.actionbarsherlock.view.MenuItem;
import com.nasageek.utexasutilities.R;
import com.nasageek.utexasutilities.Utility;
import com.nasageek.utexasutilities.adapters.MultiPanePagerAdapter;
import com.nasageek.utexasutilities.fragments.TransactionsFragment;
import com.nasageek.utexasutilities.fragments.TransactionsFragment.TransactionType;
import com.viewpagerindicator.MyTabPageIndicator;

import java.util.List;
import java.util.Vector;

public class BalanceActivity extends SherlockFragmentActivity {

    private ActionBar actionbar;
    private MultiPanePagerAdapter mPagerAdapter;
    private ViewPager pager;
    private int pagesDisplayed;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.balance_layout);

        pager = (ViewPager) findViewById(R.id.viewpager);
        pagesDisplayed = getResources().getInteger(R.integer.balance_num_visible_pages);

        this.initialisePaging();

        actionbar = getSupportActionBar();
        actionbar.setTitle("Transactions");
        actionbar.setNavigationMode(ActionBar.NAVIGATION_MODE_STANDARD);
        actionbar.setHomeButtonEnabled(true);
        actionbar.setDisplayHomeAsUpEnabled(true);
    }

    private void initialisePaging() {

        List<SherlockFragment> fragments = new Vector<SherlockFragment>();
        /**
         * this is a bit of a hacky solution for something that should be
         * handled by default. on a rotate, pager caches the old fragments (with
         * setRetainInstance(true)), but the adapter does not, so I have to add
         * the old fragments back to the adapter manually
         */
        if (getSupportFragmentManager().findFragmentByTag(
                Utility.makeFragmentName(pager.getId(), 0)) != null) {
            fragments.add((SherlockFragment) getSupportFragmentManager().findFragmentByTag(
                    Utility.makeFragmentName(pager.getId(), 0)));
            fragments.add((SherlockFragment) getSupportFragmentManager().findFragmentByTag(
                    Utility.makeFragmentName(pager.getId(), 1)));
        } else {
            fragments.add(TransactionsFragment.newInstance("Dine In", TransactionType.Dinein));
            fragments.add(TransactionsFragment.newInstance("Bevo Bucks", TransactionType.Bevo));
        }

        final MyTabPageIndicator tabIndicator = (MyTabPageIndicator) findViewById(R.id.titles);

        mPagerAdapter = new MultiPanePagerAdapter(getSupportFragmentManager(), fragments);
        mPagerAdapter.setPagesDisplayed(pagesDisplayed);

        pager.setAdapter(this.mPagerAdapter);
        final double dpiScale = getResources().getDisplayMetrics().density;
        if (pagesDisplayed == 1) {
            pager.setPageMargin((int) (8 * dpiScale + .5));
        } else {
            tabIndicator.setSelectAll(true);
        }

        tabIndicator.setViewPager(pager);

        SharedPreferences sp = PreferenceManager.getDefaultSharedPreferences(this);
        pager.setCurrentItem(Integer.parseInt(sp.getString("default_balance_tab", "0")));
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        int id = item.getItemId();
        super.onOptionsItemSelected(item);
        switch (id) {
            case android.R.id.home:
                // app icon in action bar clicked; go home
                super.onBackPressed();
                break;
            // tightly coupling the activity to the fragments for the sake of
            // graphical consistency
            // was getting weird disappearing menu buttons when I had them in
            // the fragments
            // TODO: should at least do this with an interface
            case R.id.balance_refresh:
                if (pagesDisplayed > 1) {
                    ((TransactionsFragment) ((MultiPanePagerAdapter) pager.getAdapter()).getItem(0))
                            .refresh();
                    ((TransactionsFragment) ((MultiPanePagerAdapter) pager.getAdapter()).getItem(1))
                            .refresh();
                } else {
                    // if the viewpager is only showing 1 page at a time only
                    // refresh the fragment currently in view
                    ((TransactionsFragment) ((MultiPanePagerAdapter) pager.getAdapter())
                            .getItem(pager.getCurrentItem())).refresh();
                }
                break;
        }
        return false;
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        super.onCreateOptionsMenu(menu);
        getSupportMenuInflater().inflate(R.menu.balance_menu, menu);
        return true;
    }
}

Java Source Code List

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