Android Open Source - androidui Quote Viewer Activity

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License

The source code is released under:

MIT License

Java Source Code

package course.examples.Fragments.DynamicLayout;
/*from w ww  . j  a  v  a2  s  .  c  om*/
import android.app.Activity;
import android.app.FragmentManager;
import android.app.FragmentTransaction;
import android.os.Bundle;
import android.widget.FrameLayout;
import android.widget.LinearLayout;

import course.examples.Fragments.DynamicLayout.TitlesFragment.ListSelectionListener;

public class QuoteViewerActivity extends Activity implements
        ListSelectionListener {

    public static String[] mTitleArray;
    public static String[] mQuoteArray;


    private final QuotesFragment mQuoteFragment = new QuotesFragment();
    private FragmentManager mFragmentManager;
    private FrameLayout mTitleFrameLayout, mQuotesFrameLayout;

    private static final int MATCH_PARENT = LinearLayout.LayoutParams.MATCH_PARENT;

    @SuppressWarnings("unused")
    private static final String TAG = "QuoteViewerActivity";

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        // Get the string arrays with the titles and quotes
        mTitleArray = getResources().getStringArray(R.array.Titles);
        mQuoteArray = getResources().getStringArray(R.array.Quotes);

        setContentView(R.layout.main);

        // Get references to the TitleFragment and to the QuotesFragment
        mTitleFrameLayout = (FrameLayout) findViewById(R.id.title_fragment_container);
        mQuotesFrameLayout = (FrameLayout) findViewById(R.id.quote_fragment_container);


        // Get a reference to the FragmentManager
        mFragmentManager = getFragmentManager();

        // Start a new FragmentTransaction
        FragmentTransaction fragmentTransaction = mFragmentManager
                .beginTransaction();

        // Add the TitleFragment to the layout
        fragmentTransaction.add(R.id.title_fragment_container,
                new TitlesFragment());

        // Commit the FragmentTransaction
        fragmentTransaction.commit();

        // Add a OnBackStackChangedListener to reset the layout when the back stack changes
        mFragmentManager
                .addOnBackStackChangedListener(new FragmentManager.OnBackStackChangedListener() {
                    public void onBackStackChanged() {
                        setLayout();
                    }
                });
    }

    private void setLayout() {

        // Determine whether the QuoteFragment has been added
        if (!mQuoteFragment.isAdded()) {

            // Make the TitleFragment occupy the entire layout
            mTitleFrameLayout.setLayoutParams(
                    new LinearLayout.LayoutParams(MATCH_PARENT, MATCH_PARENT));
            mQuotesFrameLayout.setLayoutParams(
                    new LinearLayout.LayoutParams(0, MATCH_PARENT));
        } else {

            // Make the TitleLayout take 1/3 of the layout's width
            mTitleFrameLayout.setLayoutParams(new LinearLayout.LayoutParams(0,
                    MATCH_PARENT, 1f));

            // Make the QuoteLayout take 2/3's of the layout's width
            mQuotesFrameLayout.setLayoutParams(new LinearLayout.LayoutParams(0,
                    MATCH_PARENT, 2f));
        }
    }

    // Called when the user selects an item in the TitlesFragment
    @Override
    public void onListSelection(int index) {

        // If the QuoteFragment has not been added, add it now
        if (!mQuoteFragment.isAdded()) {

            // Start a new FragmentTransaction
            FragmentTransaction fragmentTransaction = mFragmentManager
                    .beginTransaction();

            // Add the QuoteFragment to the layout
            fragmentTransaction.add(R.id.quote_fragment_container,
                    mQuoteFragment);

            // Add this FragmentTransaction to the back stack
            fragmentTransaction.addToBackStack(null);

            // Commit the FragmentTransaction
            fragmentTransaction.commit();

            // Force Android to execute the committed FragmentTransaction
            mFragmentManager.executePendingTransactions();
        }

        if (mQuoteFragment.getShownIndex() != index) {

            // Tell the QuoteFragment to show the quote string at position index
            mQuoteFragment.showQuoteAtIndex(index);
        }
    }
}

Java Source Code List

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