com.scooter1556.sms.android.activity.BaseActivity.java Source code

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Here is the source code for com.scooter1556.sms.android.activity.BaseActivity.java

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/*
 * Author: Scott Ware <scoot.software@gmail.com>
 * Copyright (c) 2015 Scott Ware
 *
 * Permission is hereby granted, free of charge, to any person obtaining
 * a copy of this software and associated documentation files (the
 * "Software"), to deal in the Software without restriction, including
 * without limitation the rights to use, copy, modify, merge, publish,
 * distribute, sublicense, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject to
 * the following conditions:
 *
 * The above copyright notice and this permission notice shall be
 * included in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */
package com.scooter1556.sms.android.activity;

import android.content.ComponentName;
import android.content.Intent;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.os.RemoteException;
import android.preference.PreferenceManager;
import android.support.annotation.NonNull;
import android.support.v4.media.MediaBrowserCompat;
import android.support.v4.media.MediaMetadataCompat;
import android.support.v4.media.session.MediaControllerCompat;
import android.support.v4.media.session.MediaSessionCompat;
import android.support.v4.media.session.PlaybackStateCompat;
import android.util.Log;

import com.scooter1556.sms.android.R;
import com.scooter1556.sms.android.fragment.PlaybackControlsFragment;
import com.scooter1556.sms.android.provider.MediaBrowserProvider;
import com.scooter1556.sms.android.service.MediaService;
import com.scooter1556.sms.android.utils.NetworkUtils;

/**
 * Base activity for activities that need to show a playback control fragment when media is playing.
 */
public abstract class BaseActivity extends ActionBarCastActivity implements MediaBrowserProvider {

    private static final String TAG = "BaseActivity";

    public static final int RESULT_CODE_SETTINGS = 101;
    public static final int RESULT_CODE_CONNECTIONS = 102;
    public static final int RESULT_CODE_BROWSE = 103;

    private MediaBrowserCompat mediaBrowser;
    private PlaybackControlsFragment controlsFragment;

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

        Log.d(TAG, "onCreate()");

        // Retrieve preferences if they exist
        SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(this);

        if (savedInstanceState == null) {
            // Check connection
            long id = sharedPreferences.getLong("Connection", -1);

            if (id < 0) {
                Intent connectionsIntent = new Intent(this, ConnectionActivity.class);
                startActivityForResult(connectionsIntent, RESULT_CODE_SETTINGS);
            }
        }

        // Connect a media browser just to get the media session token. There are other ways
        // this can be done, for example by sharing the session token directly.
        mediaBrowser = new MediaBrowserCompat(this, new ComponentName(getApplicationContext(), MediaService.class),
                connectionCallback, null);
    }

    @Override
    protected void onStart() {
        super.onStart();

        Log.d(TAG, "onStart()");

        controlsFragment = (PlaybackControlsFragment) getFragmentManager()
                .findFragmentById(R.id.fragment_playback_controls);

        if (controlsFragment == null) {
            throw new IllegalStateException("Missing fragment with id 'controls'. Cannot continue.");
        }

        hidePlaybackControls();

        mediaBrowser.connect();
    }

    @Override
    protected void onStop() {
        super.onStop();

        Log.d(TAG, "onStop()");

        if (MediaControllerCompat.getMediaController(this) != null) {
            MediaControllerCompat.getMediaController(this).unregisterCallback(mediaControllerCallback);
        }

        mediaBrowser.disconnect();
    }

    @Override
    public MediaBrowserCompat getMediaBrowser() {
        return mediaBrowser;
    }

    protected void onMediaControllerConnected() {
        // Empty implementation, Can be overridden by clients.
    }

    protected void showPlaybackControls() {
        if (NetworkUtils.isOnline(this)) {
            getFragmentManager().beginTransaction()
                    .setCustomAnimations(R.animator.slide_in_from_bottom, R.animator.slide_out_to_bottom,
                            R.animator.slide_in_from_bottom, R.animator.slide_out_to_bottom)
                    .show(controlsFragment).commit();
        }
    }

    protected void hidePlaybackControls() {
        getFragmentManager().beginTransaction().hide(controlsFragment).commit();
    }

    /**
     * Check if the Media Session is active
     */
    protected boolean shouldShowControls() {
        MediaControllerCompat mediaController = MediaControllerCompat.getMediaController(this);

        if (mediaController == null || mediaController.getMetadata() == null
                || mediaController.getPlaybackState() == null) {
            return false;
        }

        switch (mediaController.getPlaybackState().getState()) {
        case PlaybackStateCompat.STATE_ERROR:
        case PlaybackStateCompat.STATE_NONE:
        case PlaybackStateCompat.STATE_STOPPED:
            return false;
        default:
            return true;
        }
    }

    private void connectToSession(MediaSessionCompat.Token token) throws RemoteException {
        MediaControllerCompat mediaController = new MediaControllerCompat(this, token);
        MediaControllerCompat.setMediaController(this, mediaController);
        mediaController.registerCallback(mediaControllerCallback);

        if (shouldShowControls()) {
            showPlaybackControls();
        } else {
            hidePlaybackControls();
        }

        if (controlsFragment != null) {
            controlsFragment.onConnected();
        }

        onMediaControllerConnected();
    }

    // Callback that ensures that we are showing the controls
    private final MediaControllerCompat.Callback mediaControllerCallback = new MediaControllerCompat.Callback() {
        @Override
        public void onPlaybackStateChanged(@NonNull PlaybackStateCompat state) {
            if (shouldShowControls()) {
                showPlaybackControls();
            } else {
                hidePlaybackControls();
            }
        }

        @Override
        public void onMetadataChanged(MediaMetadataCompat metadata) {
            if (shouldShowControls()) {
                showPlaybackControls();
            } else {
                hidePlaybackControls();
            }
        }
    };

    private final MediaBrowserCompat.ConnectionCallback connectionCallback = new MediaBrowserCompat.ConnectionCallback() {
        @Override
        public void onConnected() {
            Log.d(TAG, "onConnected()");

            try {
                connectToSession(mediaBrowser.getSessionToken());
            } catch (RemoteException e) {
                Log.e(TAG, "could not connect media controller", e);
                hidePlaybackControls();
            }
        }
    };

}