Android Open Source - field-data-app Bio Sample Activity

• Back to Development/data  ↑

From Project

Back to project page field-data-app.

License

The source code is released under:

MIT License

Java Source Code

package nz.cri.gns.springs.activity;
/*from   w  w  w  .j a v  a 2 s  .com*/
import java.util.Arrays;
import java.util.List;

import com.j256.ormlite.android.apptools.OpenHelperManager;

import android.app.ActionBar;
import android.app.FragmentTransaction;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentActivity;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentPagerAdapter;
import android.support.v4.view.ViewPager;

import nz.cri.gns.springs.SpringsApplication;
import nz.cri.gns.springs.R;
import nz.cri.gns.springs.db.BiologicalSample;
import nz.cri.gns.springs.db.Configuration;
import nz.cri.gns.springs.db.SpringsDbHelper;
import nz.cri.gns.springs.fragments.AppearanceFragment;
import nz.cri.gns.springs.fragments.BioSampleActivityFragment;
import nz.cri.gns.springs.fragments.BioSampleFragment;
import nz.cri.gns.springs.fragments.ImageFragment;

/**
 * Biological sampling activity, creates the screens (fragments) that enable users to
 * enter geological feature survey and biological sample information, then glues
 * them together by providing the action bar with a tab for each screen. 
 * @author duncanw
 */
public class BioSampleActivity extends FragmentActivity implements ActionBar.TabListener {

  private SectionTabsPagerAdapter mAppSectionsPagerAdapter;
  private BiologicalSample currentSample;
    private ViewPager mViewPager;
  private SpringsDbHelper databaseHelper = null;
  
  private static final String SAMPLE_KEY = "currentSample";
  
  /**
   * Extra intent data key for the ID of the biological sample selected for viewing by the user.
   * The value is the numeric portion only, e.g '23', not 'P1.0023'.
   */
  public static final String BIOLOGICAL_SAMPLE = "nz.cri.gns.springs.activity.BiologicalSample";


  @Override
  public void onDestroy() {
      super.onDestroy();
      if (databaseHelper != null) {
          OpenHelperManager.releaseHelper();
          databaseHelper = null;
      }
  }

  protected SpringsDbHelper getHelper() {
      if (databaseHelper == null) {
          databaseHelper =
              OpenHelperManager.getHelper(this, SpringsDbHelper.class);
      }
      return databaseHelper;
  }    

    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        
        setContentView(R.layout.activity_bio_sample);
        
      if (savedInstanceState != null) {
        currentSample = (BiologicalSample)savedInstanceState.getSerializable(SAMPLE_KEY);
        getHelper().getBiologicalSampleDao().refresh(currentSample);
      } 
      if (currentSample == null) {
        setCurrentSample();
      }

        mAppSectionsPagerAdapter = new SectionTabsPagerAdapter(getSupportFragmentManager(), currentSample);

        final ActionBar actionBar = getActionBar();
        actionBar.setDisplayOptions(ActionBar.DISPLAY_SHOW_TITLE);
        actionBar.setTitle(currentSample.getFormattedSampleNumber()); 
        actionBar.setHomeButtonEnabled(false);
        actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);

        // Set up the ViewPager, attaching the adapter and setting up a listener for when the
        // user swipes between sections.
        mViewPager = (ViewPager) findViewById(R.id.pager);
        mViewPager.setAdapter(mAppSectionsPagerAdapter);
        mViewPager.setOnPageChangeListener(new ViewPager.SimpleOnPageChangeListener() {
            @Override
            public void onPageSelected(int position) {
                actionBar.setSelectedNavigationItem(position);
            }
        });

        // For each of the sections in the app, add a tab to the action bar.
        for (int i = 0; i < mAppSectionsPagerAdapter.getCount(); i++) {
            actionBar.addTab(
                    actionBar.newTab()
                            .setText(mAppSectionsPagerAdapter.getPageTitle(i))
                            .setTabListener(this));
        }
    }
    
    @Override
    public void onSaveInstanceState(Bundle instanceState) {
      super.onSaveInstanceState(instanceState);
      instanceState.putSerializable(SAMPLE_KEY, currentSample);
    }
        
    private void setCurrentSample() {
      
      Bundle extras = this.getIntent().getExtras();
      if (extras != null) {
        Long sampleId = extras.getLong(BIOLOGICAL_SAMPLE);
        currentSample = getHelper().getBiologicalSampleDao().queryForId(sampleId);
      } else {
        currentSample = null;
      }
      
      if (currentSample == null) {
        currentSample = new BiologicalSample();
        String nextSampleNumberConfig = Configuration.getConfiguration(getResources().getString(R.string.config_next_sample_number), getHelper());
        int sampleNumber = BiologicalSample.getMaxSampleNumber(getHelper()) + 1;
        if (nextSampleNumberConfig != null && !nextSampleNumberConfig.isEmpty()) {
          sampleNumber = Math.max(sampleNumber, Integer.parseInt(nextSampleNumberConfig));
        }
        currentSample.setSampleNumber(sampleNumber);
        getHelper().getBiologicalSampleDao().create(currentSample);
      }
    }

    @Override
    public void onTabUnselected(ActionBar.Tab tab, FragmentTransaction fragmentTransaction) {
    }

    @Override
    public void onTabSelected(ActionBar.Tab tab, FragmentTransaction fragmentTransaction) {
        // When the given tab is selected, switch to the corresponding page in the ViewPager.
        mViewPager.setCurrentItem(tab.getPosition());
    }

    @Override
    public void onTabReselected(ActionBar.Tab tab, FragmentTransaction fragmentTransaction) {
    }
    
    static class SectionTabsPagerAdapter extends FragmentPagerAdapter {
      
      private List<SectionTab> tabs;
      
        public SectionTabsPagerAdapter(FragmentManager fm, BiologicalSample currentSample) {
            super(fm);
            tabs = Arrays.asList(new SectionTab[]{
                new SectionTab(SpringsApplication.getAppContext().getString(R.string.survey_data_tab), 
                      new AppearanceFragment().setCurrentSample(currentSample)),                
              new SectionTab(SpringsApplication.getAppContext().getString(R.string.sample_data_tab), 
                  new BioSampleFragment().setCurrentSample(currentSample)),
              new SectionTab(SpringsApplication.getAppContext().getString(R.string.images_tab), 
                  new ImageFragment().setCurrentSample(currentSample))
            });
        }

      @Override
      public Fragment getItem(int i) {
        return tabs.get(i).getFragment();
      }

      @Override
      public int getCount() {
        return tabs.size();
      }
      
        @Override
        public CharSequence getPageTitle(int i) {
            return  tabs.get(i).getTitle();
        }

    } 
    
    
    static class SectionTab {
      
      private String title;
      private BioSampleActivityFragment fragment;
      
      public SectionTab(String title, BioSampleActivityFragment fragment) {
        this.title = title;
        this.fragment = fragment;
      }
      
      
      public String getTitle() {
        return title;
      }
      public void setTitle(String title) {
        this.title = title;
      }
      public BioSampleActivityFragment getFragment() {
        return fragment;
      }
      public void setFragment(BioSampleActivityFragment fragment) {
        this.fragment = fragment;
      }

    }
}

Java Source Code List

• Back to Development/data  ↑