Android Open Source - OrganGigManager Main Activity

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License

The source code is released under:

GNU General Public License

Java Source Code

package com.example.organgigmanager;
/*from  ww w  .java  2  s . c om*/
import android.os.Bundle;
import android.support.v4.app.FragmentActivity;
import android.support.v4.app.FragmentTransaction;
import android.util.Log;
import android.view.ViewGroup;

import com.example.organistendienstmanager.R;


public class MainActivity extends FragmentActivity implements OnMainNavigationItemClicked {
  private static final String TAG = "MainActivity";

  private ViewGroup mMainSelectedLayout, mChosenNavigationItemLayout;
  private boolean doesSecondFragmentExistInView = false;

  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    Log.v(TAG, "onCreate: savedInstanceState " + (savedInstanceState == null ? "==" : "!=") + " null");

    setContentView(R.layout.activity_main);

    // Restore state
    if (savedInstanceState != null) {
      // The fragment manager will handle restoring them if we are being
      // restored from a saved state
    }
    // If this is the first creation of the activity, add fragments to it
    else {

      // If our layout has a container for the main_view fragment, add it
      mMainSelectedLayout = (ViewGroup) findViewById(R.id.activity_main_view_start_container);
      if (mMainSelectedLayout != null) {

        FragmentTransaction fragmentTransaction = addActivityMainViewStartContainerFragmentToContainerLayout();
        fragmentTransaction.commit();
      }

      mChosenNavigationItemLayout = (ViewGroup) findViewById(R.id.activity_main_selected_item_container);
      if (mChosenNavigationItemLayout != null) {
        Log.i(TAG, "onCreate: found second fragment");
        doesSecondFragmentExistInView = true;
      }

    }
  }

  private FragmentTransaction addActivityMainViewStartContainerFragmentToContainerLayout() {
    NavigationOverviewFragment overviewFragment = new NavigationOverviewFragment();
    FragmentTransaction fragmentTransaction = getSupportFragmentManager().beginTransaction();
    fragmentTransaction.replace(mMainSelectedLayout.getId(), overviewFragment,
        NavigationOverviewFragment.class.getName());
    return fragmentTransaction;
  }

  @Override
  public void onStart() {
    super.onStart();
    Log.v(TAG, "onStart");
  }

  @Override
  public void onResume() {
    super.onResume();
    Log.v(TAG, "onResume");
  }

  @Override
  public void onPause() {
    super.onPause();
    Log.v(TAG, "onPause");
  }

  @Override
  public void onSaveInstanceState(Bundle outState) {
    super.onSaveInstanceState(outState);
    Log.v(TAG, "onSaveInstanceState");
  }

  @Override
  public void onStop() {
    super.onStop();
    Log.v(TAG, "onStop");
  }

  @Override
  public void onDestroy() {
    super.onDestroy();
    Log.v(TAG, "onDestroy");
  }

  @Override
  public void navigationItemClicked(MainNavigtationItems clickedItem) {
    Log.d(TAG, "navigationItemClicked: clickedItem = " + clickedItem);

    ViewGroup viewToDisplayClickedItem = mMainSelectedLayout;
    if(doesSecondFragmentExistInView) {
      viewToDisplayClickedItem = mChosenNavigationItemLayout;
    }

    FragmentTransaction fragmentTransaction = getSupportFragmentManager().beginTransaction();

    switch(clickedItem) {
    case EDIT_GIGS:
      EditGigFragment editGigFragment = new EditGigFragment();
      fragmentTransaction.replace(viewToDisplayClickedItem.getId(), editGigFragment,
          EditGigFragment.class.getName());
      break;
    case GIG_OVERVIEW:
      GigOverviewFragment gigOverviewFragment = new GigOverviewFragment();
      fragmentTransaction.replace(viewToDisplayClickedItem.getId(), gigOverviewFragment,
          GigOverviewFragment.class.getName());
      break;
    case SETTINGS:
      SettingsFragment settingsFragment = new SettingsFragment();
      fragmentTransaction.replace(viewToDisplayClickedItem.getId(), settingsFragment,
          SettingsFragment.class.getName());
      break;
    default:
      Log.e(TAG, "unknown item clicked: " + clickedItem.name());
    }

    addToBackStackIfOnlyOneFragmentIsDisplayed(fragmentTransaction);
    fragmentTransaction.commit();
  }

  private void addToBackStackIfOnlyOneFragmentIsDisplayed(FragmentTransaction fragmentTransaction) {
    if(!doesSecondFragmentExistInView) {
      fragmentTransaction.addToBackStack("new_gig");
    }
  }

}

Java Source Code List

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