Android Open Source - LyricHere Lyric Explorer Activity

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Back to project page LyricHere.

License

The source code is released under:

Apache License

Java Source Code

package cn.zhaiyifan.lyrichere.ui;
/*from w  w w  .  j  a v a  2 s .com*/
import android.content.Intent;
import android.os.Bundle;
import android.os.Environment;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentPagerAdapter;
import android.support.v4.app.FragmentTransaction;
import android.support.v4.view.ViewPager;
import android.support.v7.app.ActionBar;
import android.support.v7.app.ActionBarActivity;
import android.text.TextUtils;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.Toast;

import java.util.Locale;

import cn.zhaiyifan.lyrichere.Constants;
import cn.zhaiyifan.lyrichere.R;
import cn.zhaiyifan.lyrichere.prefs.SettingsActivity;
import cn.zhaiyifan.lyrichere.utils.Util;
import cn.zhaiyifan.lyrichere.workers.Finder;
import cn.zhaiyifan.lyrichere.workers.LyricOpener;

public class LyricExplorerActivity extends ActionBarActivity implements ActionBar.TabListener,
        LyricExplorerFragment.OnFragmentInteractionListener, DownloadFragment.OnFragmentInteractionListener {
    private static final String TAG = LyricExplorerActivity.class.getSimpleName();

    /**
     * The {@link android.support.v4.view.PagerAdapter} that will provide
     * fragments for each of the sections. We use a
     * {@link android.support.v4.app.FragmentPagerAdapter} derivative, which will keep every
     * loaded fragment in memory. If this becomes too memory intensive, it
     * may be best to switch to a
     * {@link android.support.v4.app.FragmentStatePagerAdapter}.
     */
    SectionsPagerAdapter mSectionsPagerAdapter;

    /**
     * The {@link android.support.v4.view.ViewPager} that will host the section contents.
     */
    ViewPager mViewPager;

    @Override
    protected void onResume() {
        super.onResume();
        Util.log(TAG, "onResume");

        if (getIntent() != null) {
            String title = getIntent().getStringExtra(Constants.Column.TITLE);
            if (!TextUtils.isEmpty(title)) {
                String artist = getIntent().getStringExtra(Constants.Column.ARTIST);
                String album = getIntent().getStringExtra(Constants.Column.ALBUM);
                Util.log(TAG, title);
                new LyricOpener(this).execute(title, artist, album);
            }
            setIntent(null);
        }
    }

    /**
     * Override onNewIntent to get new intent when re-entering
     *
     * @param intent
     */
    @Override
    protected void onNewIntent(Intent intent) {
        Util.log(TAG, "onNewIntent");
        if (intent.getStringExtra(Constants.Column.TITLE) != null)
            Util.log(TAG, intent.getStringExtra(Constants.Column.TITLE));
        super.onNewIntent(intent);
        setIntent(intent);
    }

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        Util.log(TAG, "onCreate");
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_lyric_explorer);

        // Set up the action bar.
        final ActionBar actionBar = getSupportActionBar();
        actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);

        // Create the adapter that will return a fragment for each of the three
        // primary sections of the activity.
        mSectionsPagerAdapter = new SectionsPagerAdapter(getSupportFragmentManager());

        // Set up the ViewPager with the sections adapter.
        mViewPager = (ViewPager) findViewById(R.id.pager);
        mViewPager.setAdapter(mSectionsPagerAdapter);

        // When swiping between different sections, select the corresponding
        // tab. We can also use ActionBar.Tab#select() to do this if we have
        // a reference to the Tab.
        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 < mSectionsPagerAdapter.getCount(); i++) {
            // Create a tab with text corresponding to the page title defined by
            // the adapter. Also specify this Activity object, which implements
            // the TabListener interface, as the callback (listener) for when
            // this tab is selected.
            actionBar.addTab(
                    actionBar.newTab()
                            .setText(mSectionsPagerAdapter.getPageTitle(i))
                            .setTabListener(this)
            );
        }
    }


    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.lyric_explorer, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        int id = item.getItemId();

        switch (id) {
            case R.id.action_refresh:
                new Finder(this).execute(Environment.getExternalStorageDirectory());
                break;
            case R.id.action_about:
                startActivity(new Intent(this, AboutActivity.class));
                break;
            case R.id.action_settings:
                startActivity(new Intent(this, SettingsActivity.class));
                break;
            default:
                return false;
        }
        return true;
    }

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

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

    @Override
    public void onFragmentInteraction(String text) {
        if (!TextUtils.isEmpty(text)) {
            Toast.makeText(this, text, Toast.LENGTH_SHORT).show();
        }
    }

    /**
     * A {@link android.support.v4.app.FragmentPagerAdapter} that returns a fragment corresponding to
     * one of the sections/tabs/pages.
     */
    public class SectionsPagerAdapter extends FragmentPagerAdapter {

        public SectionsPagerAdapter(FragmentManager fm) {
            super(fm);
        }

        @Override
        public Fragment getItem(int position) {
            Fragment fragment = null;
            switch (position) {
                case 0:
                    fragment = LyricExplorerFragment.newInstance(1);
                    break;
                case 1:
                    fragment = LyricExplorerFragment.newInstance(2);
                    break;
                case 2:
                    fragment = DownloadFragment.newInstance();
                    break;
            }
            return fragment;
        }

        @Override
        public int getCount() {
            // Show 3 total pages.
            return 3;
        }

        @Override
        public CharSequence getPageTitle(int position) {
            Locale l = Locale.getDefault();
            switch (position) {
                case 0:
                    return getString(R.string.title_section1).toUpperCase(l);
                case 1:
                    return getString(R.string.title_section2).toUpperCase(l);
                case 2:
                    return getString(R.string.title_section3).toUpperCase(l);
            }
            return null;
        }
    }
}

Java Source Code List

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