Add wake lock to receiver

app/src/main/java/android/support/v4/content/WakefulBroadcastReceiver.java

@@ -0,0 +1,134 @@
+/*
+ * Copyright (C) 2013 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.
+ */
+
+package android.support.v4.content;
+
+import android.content.BroadcastReceiver;
+import android.content.ComponentName;
+import android.content.Context;
+import android.content.Intent;
+import android.os.PowerManager;
+import android.util.Log;
+import android.util.SparseArray;
+
+/**
+ * Helper for the common pattern of implementing a {@link BroadcastReceiver}
+ * that receives a device wakeup event and then passes the work off
+ * to a {@link android.app.Service}, while ensuring that the
+ * device does not go back to sleep during the transition.
+ *
+ * <p>This class takes care of creating and managing a partial wake lock
+ * for you; you must request the {@link android.Manifest.permission#WAKE_LOCK}
+ * permission to use it.</p>
+ *
+ * <h3>Example</h3>
+ *
+ * <p>A {@link WakefulBroadcastReceiver} uses the method
+ * {@link WakefulBroadcastReceiver#startWakefulService startWakefulService()}
+ * to start the service that does the work. This method is comparable to
+ * {@link android.content.Context#startService startService()}, except that
+ * the {@link WakefulBroadcastReceiver} is holding a wake lock when the service
+ * starts. The intent that is passed with
+ * {@link WakefulBroadcastReceiver#startWakefulService startWakefulService()}
+ * holds an extra identifying the wake lock.</p>
+ *
+ * {@sample development/samples/Support4Demos/src/com/example/android/supportv4/content/SimpleWakefulReceiver.java complete}
+ *
+ * <p>The service (in this example, an {@link android.app.IntentService}) does
+ * some work. When it is finished, it releases the wake lock by calling
+ * {@link WakefulBroadcastReceiver#completeWakefulIntent
+ * completeWakefulIntent(intent)}. The intent it passes as a parameter
+ * is the same intent that the {@link WakefulBroadcastReceiver} originally
+ * passed in.</p>
+ *
+ * {@sample development/samples/Support4Demos/src/com/example/android/supportv4/content/SimpleWakefulService.java complete}
+ */
+public abstract class WakefulBroadcastReceiver extends BroadcastReceiver {
+    private static final String EXTRA_WAKE_LOCK_ID = "android.support.content.wakelockid";
+
+    private static final SparseArray<PowerManager.WakeLock> mActiveWakeLocks
+            = new SparseArray<PowerManager.WakeLock>();
+    private static int mNextId = 1;
+
+    /**
+     * Do a {@link android.content.Context#startService(android.content.Intent)
+     * Context.startService}, but holding a wake lock while the service starts.
+     * This will modify the Intent to hold an extra identifying the wake lock;
+     * when the service receives it in {@link android.app.Service#onStartCommand
+     * Service.onStartCommand}, it should pass back the Intent it receives there to
+     * {@link #completeWakefulIntent(android.content.Intent)} in order to release
+     * the wake lock.
+     *
+     * @param context The Context in which it operate.
+     * @param intent The Intent with which to start the service, as per
+     * {@link android.content.Context#startService(android.content.Intent)
+     * Context.startService}.
+     */
+    public static ComponentName startWakefulService(Context context, Intent intent) {
+        synchronized (mActiveWakeLocks) {
+            int id = mNextId;
+            mNextId++;
+            if (mNextId <= 0) {
+                mNextId = 1;
+            }
+
+            intent.putExtra(EXTRA_WAKE_LOCK_ID, id);
+            ComponentName comp = context.startService(intent);
+            if (comp == null) {
+                return null;
+            }
+
+            PowerManager pm = (PowerManager)context.getSystemService(Context.POWER_SERVICE);
+            PowerManager.WakeLock wl = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK,
+                    "wake:" + comp.flattenToShortString());
+            wl.setReferenceCounted(false);
+            wl.acquire(60*1000);
+            mActiveWakeLocks.put(id, wl);
+            return comp;
+        }
+    }
+
+    /**
+     * Finish the execution from a previous {@link #startWakefulService}.  Any wake lock
+     * that was being held will now be released.
+     *
+     * @param intent The Intent as originally generated by {@link #startWakefulService}.
+     * @return Returns true if the intent is associated with a wake lock that is
+     * now released; returns false if there was no wake lock specified for it.
+     */
+    public static boolean completeWakefulIntent(Intent intent) {
+        final int id = intent.getIntExtra(EXTRA_WAKE_LOCK_ID, 0);
+        if (id == 0) {
+            return false;
+        }
+        synchronized (mActiveWakeLocks) {
+            PowerManager.WakeLock wl = mActiveWakeLocks.get(id);
+            if (wl != null) {
+                wl.release();
+                mActiveWakeLocks.remove(id);
+                return true;
+            }
+            // We return true whether or not we actually found the wake lock
+            // the return code is defined to indicate whether the Intent contained
+            // an identifier for a wake lock that it was supposed to match.
+            // We just log a warning here if there is no wake lock found, which could
+            // happen for example if this function is called twice on the same
+            // intent or the process is killed and restarted before processing the intent.
+            Log.w("WakefulBroadcastReceive", "No active wake lock id #" + id);
+            return true;
+        }
+    }
+}

app/src/main/java/org/traccar/client/AutostartReceiver.java

@@ -15,13 +15,13 @@
  */
 package org.traccar.client;
 
-import android.content.BroadcastReceiver;
 import android.content.Context;
 import android.content.Intent;
 import android.content.SharedPreferences;
 import android.preference.PreferenceManager;
+import android.support.v4.content.WakefulBroadcastReceiver;
 
-public class AutostartReceiver extends BroadcastReceiver {
+public class AutostartReceiver extends WakefulBroadcastReceiver {
 	
     @Override
     public void onReceive(Context context, Intent intent) {

app/src/main/java/org/traccar/client/TrackingService.java

@@ -51,9 +51,16 @@ public class TrackingService extends Service {
         return null;
     }
 
+    @SuppressWarnings("deprecation")
+    @Override
+    public void onStart(Intent intent, int startId) {
+        AutostartReceiver.completeWakefulIntent(intent);
+    }
+
     @TargetApi(Build.VERSION_CODES.ECLAIR)
     @Override
     public int onStartCommand(Intent intent, int flags, int startId) {
+        onStart(intent, startId);
         return START_STICKY;
     }