com.mylovemhz.muse.MainActivity.java Source code

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Here is the source code for com.mylovemhz.muse.MainActivity.java

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/*
Copyright 2016 Allan Pichardo
    
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
    
http://www.apache.org/licenses/LICENSE-2.0
    
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
 */

package com.mylovemhz.muse;

import android.content.ComponentName;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.ServiceConnection;
import android.os.Bundle;
import android.os.IBinder;
import android.support.design.widget.Snackbar;
import android.support.v4.app.ActivityCompat;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentTransaction;
import android.support.v7.app.AlertDialog;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.ListView;

import com.mylovemhz.simplay.MediaControlFragment;
import com.mylovemhz.simplay.MusicService;
import com.mylovemhz.simplay.Track;

public class MainActivity extends AppCompatActivity implements MusicService.Callbacks, SongsAdapter.Callback {

    private static final String TAG_MEDIA_CONTROLS = "media_controls";

    private MusicService musicService;
    private boolean isBound = false;

    private ListView songList;
    private ListView queueList;
    private MediaControlFragment mediaControlFragment;

    private ServiceConnection serviceConnection = new ServiceConnection() {
        @Override
        public void onServiceConnected(ComponentName name, IBinder service) {
            musicService = ((MusicService.LocalBinder) service).getService();
            musicService.setCallback(MainActivity.this);
            musicService.setSmallIconResource(android.R.drawable.ic_media_play);
            initMediaControls();
            isBound = true;
        }

        @Override
        public void onServiceDisconnected(ComponentName name) {
            musicService = null;
            isBound = false;
        }
    };

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
        setSupportActionBar(toolbar);
        songList = (ListView) findViewById(R.id.songsList);
        queueList = (ListView) findViewById(R.id.queuedList);

        SongsAdapter songsAdapter = new SongsAdapter();
        songsAdapter.setCallback(this);
        songList.setAdapter(songsAdapter);
    }

    private void initMediaControls() {
        if (isBound) {
            mediaControlFragment = MediaControlFragment.newInstance(musicService.getMediaSessionToken());
        }
    }

    private void showMediaControls() {
        FragmentManager fragmentManager = getSupportFragmentManager();
        FragmentTransaction transaction = fragmentManager.beginTransaction();
        transaction.replace(R.id.playerLayout, mediaControlFragment, TAG_MEDIA_CONTROLS);
        transaction.commit();
    }

    private void hideMediaControls() {
        if (!isFinishing()) {
            FragmentManager fragmentManager = getSupportFragmentManager();
            FragmentTransaction transaction = fragmentManager.beginTransaction();
            transaction.remove(mediaControlFragment);
            transaction.commit();
        }
    }

    @Override
    protected void onStart() {
        super.onStart();
        Intent intent = new Intent(this, MusicService.class);
        startService(intent);
        bindService(intent, serviceConnection, Context.BIND_AUTO_CREATE);
    }

    @Override
    protected void onStop() {
        unbindService(serviceConnection);
        super.onStop();
    }

    @Override
    protected void onDestroy() {
        if (!isChangingConfigurations()) {
            Intent intent = new Intent(this, MusicService.class);
            stopService(intent);
        }
        super.onDestroy();
    }

    @Override
    public void onPermissionRequired(final int requestCode, final String permission, String rationale) {
        // Should we show an explanation?
        if (ActivityCompat.shouldShowRequestPermissionRationale(this, permission)) {

            AlertDialog.Builder builder = new AlertDialog.Builder(this);
            builder.setMessage(rationale);
            builder.setNeutralButton("Got it", new DialogInterface.OnClickListener() {
                @Override
                public void onClick(DialogInterface dialog, int which) {
                    askForPermission(requestCode, permission);
                }
            });
            builder.create().show();
        } else {
            // No explanation needed, we can request the permission.
            askForPermission(requestCode, permission);
        }
    }

    @Override
    public void onLoading() {
        Snackbar sb = Snackbar.make(findViewById(R.id.coordinatorLayout), "Loading track...",
                Snackbar.LENGTH_SHORT);
        sb.show();
    }

    @Override
    public void onPlaybackStarted() {
        showMediaControls();
    }

    @Override
    public void onPlaybackStopped() {
        hideMediaControls();
        refreshQueue();
    }

    @Override
    public void onError() {

    }

    private void askForPermission(int requestCode, String permission) {
        ActivityCompat.requestPermissions(this, new String[] { permission }, requestCode);
    }

    @Override
    public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {
        if (isBound) {
            musicService.onRequestPermissionsResult(requestCode, permissions, grantResults);
        }
    }

    private void refreshQueue() {
        queueList.setAdapter(new QueueAdapter(musicService.getTracks()));
    }

    @Override
    public void onTrackSelected(Track track) {
        if (isBound) {
            if (mediaControlFragment == null)
                initMediaControls();
            try {
                musicService.addTrack(track);
                refreshQueue();
            } catch (Exception e) {
                Log.e("Track queue example", e.getMessage());
            }
        }
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.menu_main, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        if (item.getItemId() == R.id.clearItem) {
            if (isBound) {
                musicService.stop();
                musicService.clearTrackQueue();
                refreshQueue();
                return true;
            }
        }
        return super.onOptionsItemSelected(item);
    }
}