Refactor project structure

app/src/main/java/com/cappielloantonio/play/broadcast/receiver/ConnectivityStatusBroadcastReceiver.java

@@ -6,7 +6,7 @@ import android.content.Intent;
 import android.net.ConnectivityManager;
 import android.view.View;
 
-import com.cappielloantonio.play.ui.activities.MainActivity;
+import com.cappielloantonio.play.ui.activity.MainActivity;
 
 public class ConnectivityStatusBroadcastReceiver extends BroadcastReceiver {
     private MainActivity activity;

app/src/main/java/com/cappielloantonio/play/broadcast/receiver/MediaButtonIntentReceiver.java

@@ -0,0 +1,220 @@
+/*
+ * Copyright (C) 2007 The Android Open Source Project 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.
+ */
+
+// Modified for Phonograph by Karim Abou Zeid (kabouzeid).
+
+package com.cappielloantonio.play.broadcast.receiver;
+
+import android.annotation.SuppressLint;
+import android.content.BroadcastReceiver;
+import android.content.Context;
+import android.content.Intent;
+import android.os.Handler;
+import android.os.Message;
+import android.os.PowerManager;
+import android.os.PowerManager.WakeLock;
+import android.util.Log;
+import android.view.KeyEvent;
+
+import androidx.core.content.ContextCompat;
+
+import com.cappielloantonio.play.BuildConfig;
+import com.cappielloantonio.play.service.MusicService;
+
+/**
+ * Used to control headset playback.
+ * Single press: pause/resume
+ * Double press: next track
+ * Triple press: previous track
+ */
+public class MediaButtonIntentReceiver extends BroadcastReceiver {
+    private static final boolean DEBUG = BuildConfig.DEBUG;
+    public static final String TAG = MediaButtonIntentReceiver.class.getSimpleName();
+
+    private static final int MSG_HEADSET_DOUBLE_CLICK_TIMEOUT = 2;
+
+    private static final int DOUBLE_CLICK = 400;
+
+    private static WakeLock mWakeLock = null;
+    private static int mClickCounter = 0;
+    private static long mLastClickTime = 0;
+
+    @SuppressLint("HandlerLeak")
+    private static Handler mHandler = new Handler() {
+
+        @Override
+        public void handleMessage(final Message msg) {
+            switch (msg.what) {
+                case MSG_HEADSET_DOUBLE_CLICK_TIMEOUT:
+                    final int clickCount = msg.arg1;
+                    final String command;
+
+                    if (DEBUG) Log.v(TAG, "Handling headset click, count = " + clickCount);
+                    switch (clickCount) {
+                        case 1:
+                            command = MusicService.ACTION_TOGGLE;
+                            break;
+                        case 2:
+                            command = MusicService.ACTION_SKIP;
+                            break;
+                        case 3:
+                            command = MusicService.ACTION_REWIND;
+                            break;
+                        default:
+                            command = null;
+                            break;
+                    }
+
+                    if (command != null) {
+                        final Context context = (Context) msg.obj;
+                        startService(context, command);
+                    }
+
+                    break;
+            }
+
+            releaseWakeLockIfHandlerIdle();
+        }
+    };
+
+    @Override
+    public void onReceive(final Context context, final Intent intent) {
+        if (DEBUG) Log.v(TAG, "Received intent: " + intent);
+        if (handleIntent(context, intent) && isOrderedBroadcast()) {
+            abortBroadcast();
+        }
+    }
+
+    public static boolean handleIntent(final Context context, final Intent intent) {
+        final String intentAction = intent.getAction();
+        if (Intent.ACTION_MEDIA_BUTTON.equals(intentAction)) {
+            final KeyEvent event = intent.getParcelableExtra(Intent.EXTRA_KEY_EVENT);
+            if (event == null) {
+                return false;
+            }
+
+            final int keycode = event.getKeyCode();
+            final int action = event.getAction();
+
+            // fallback to system time if event time is not available
+            final long eventTime = event.getEventTime() != 0
+                    ? event.getEventTime()
+                    : System.currentTimeMillis();
+
+            String command = null;
+            switch (keycode) {
+                case KeyEvent.KEYCODE_MEDIA_STOP:
+                    command = MusicService.ACTION_STOP;
+                    break;
+                case KeyEvent.KEYCODE_HEADSETHOOK:
+                case KeyEvent.KEYCODE_MEDIA_PLAY_PAUSE:
+                    command = MusicService.ACTION_TOGGLE;
+                    break;
+                case KeyEvent.KEYCODE_MEDIA_NEXT:
+                    command = MusicService.ACTION_SKIP;
+                    break;
+                case KeyEvent.KEYCODE_MEDIA_PREVIOUS:
+                    command = MusicService.ACTION_REWIND;
+                    break;
+                case KeyEvent.KEYCODE_MEDIA_PAUSE:
+                    command = MusicService.ACTION_PAUSE;
+                    break;
+                case KeyEvent.KEYCODE_MEDIA_PLAY:
+                    command = MusicService.ACTION_PLAY;
+                    break;
+            }
+
+            if (command != null) {
+                if (action == KeyEvent.ACTION_DOWN) {
+                    if (event.getRepeatCount() == 0) {
+                        // Only consider the first event in a sequence, not the repeat events,
+                        // so that we don't trigger in cases where the first event went to
+                        // a different app (e.g. when the user ends a phone call by
+                        // long pressing the headset button)
+
+                        // The service may or may not be running, but we need to send it
+                        // a command.
+                        if (keycode == KeyEvent.KEYCODE_HEADSETHOOK || keycode == KeyEvent.KEYCODE_MEDIA_PLAY_PAUSE) {
+                            if (eventTime - mLastClickTime >= DOUBLE_CLICK) {
+                                mClickCounter = 0;
+                            }
+
+                            mClickCounter++;
+                            if (DEBUG) Log.v(TAG, "Got headset click, count = " + mClickCounter);
+                            mHandler.removeMessages(MSG_HEADSET_DOUBLE_CLICK_TIMEOUT);
+
+                            Message msg = mHandler.obtainMessage(
+                                    MSG_HEADSET_DOUBLE_CLICK_TIMEOUT, mClickCounter, 0, context);
+
+                            long delay = mClickCounter < 3 ? DOUBLE_CLICK : 0;
+                            if (mClickCounter >= 3) {
+                                mClickCounter = 0;
+                            }
+
+                            mLastClickTime = eventTime;
+                            acquireWakeLockAndSendMessage(context, msg, delay);
+                        } else {
+                            startService(context, command);
+                        }
+
+                        return true;
+                    }
+                }
+            }
+        }
+
+        return false;
+    }
+
+    private static void startService(Context context, String command) {
+        final Intent intent = new Intent(context, MusicService.class);
+        intent.setAction(command);
+        try {
+            // IMPORTANT NOTE: (kind of a hack)
+            // on Android O and above the following crashes when the app is not running
+            // there is no good way to check whether the app is running so we catch the exception
+            // we do not always want to use startForegroundService() because then one gets an ANR
+            // if no notification is displayed via startForeground()
+            // according to Play analytics this happens a lot, I suppose for example if command = PAUSE
+            context.startService(intent);
+        } catch (IllegalStateException ignored) {
+            ContextCompat.startForegroundService(context, intent);
+        }
+    }
+
+    private static void acquireWakeLockAndSendMessage(Context context, Message msg, long delay) {
+        if (mWakeLock == null) {
+            Context appContext = context.getApplicationContext();
+            PowerManager pm = (PowerManager) appContext.getSystemService(Context.POWER_SERVICE);
+            mWakeLock = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, context.getClass().getName());
+            mWakeLock.setReferenceCounted(false);
+        }
+
+        if (DEBUG) Log.v(TAG, "Acquiring wake lock and sending " + msg.what);
+
+        mWakeLock.acquire(10000);
+        mHandler.sendMessageDelayed(msg, delay);
+    }
+
+    private static void releaseWakeLockIfHandlerIdle() {
+        if (mHandler.hasMessages(MSG_HEADSET_DOUBLE_CLICK_TIMEOUT)) {
+            if (DEBUG) Log.v(TAG, "Handler still has messages pending, not releasing wake lock");
+            return;
+        }
+
+        if (mWakeLock != null) {
+            if (DEBUG) Log.v(TAG, "Releasing wake lock");
+
+            mWakeLock.release();
+            mWakeLock = null;
+        }
+    }
+}