1 files changed, 62 insertions, 0 deletions
diff --git a/src/com/android/calendar/alerts/InitAlarmsService.java b/src/com/android/calendar/alerts/InitAlarmsService.java
new file mode 100644
index 00000000..3a9b0b2c
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+++ b/src/com/android/calendar/alerts/InitAlarmsService.java
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+/*
+ * Copyright (C) 2012 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 com.android.calendar.alerts;
+
+import android.app.IntentService;
+import android.content.ContentValues;
+import android.content.Intent;
+import android.net.Uri;
+import android.os.SystemClock;
+import android.provider.CalendarContract;
+import android.util.Log;
+
+/**
+ * Service for clearing all scheduled alerts from the CalendarAlerts table and
+ * rescheduling them.  This is expected to be called only on boot up, to restore
+ * the AlarmManager alarms that were lost on device restart.
+ */
+public class InitAlarmsService extends IntentService {
+    private static final String TAG = "InitAlarmsService";
+    private static final String SCHEDULE_ALARM_REMOVE_PATH = "schedule_alarms_remove";
+    private static final Uri SCHEDULE_ALARM_REMOVE_URI = Uri.withAppendedPath(
+            CalendarContract.CONTENT_URI, SCHEDULE_ALARM_REMOVE_PATH);
+
+    // Delay for rescheduling the alarms must be great enough to minimize race
+    // conditions with the provider's boot up actions.
+    private static final long DELAY_MS = 30000;
+
+    public InitAlarmsService() {
+        super("InitAlarmsService");
+    }
+
+    @Override
+    protected void onHandleIntent(Intent intent) {
+        // Delay to avoid race condition of in-progress alarm scheduling in provider.
+        SystemClock.sleep(DELAY_MS);
+        Log.d(TAG, "Clearing and rescheduling alarms.");
+        try {
+            getContentResolver().update(SCHEDULE_ALARM_REMOVE_URI, new ContentValues(), null,
+                    null);
+        } catch (java.lang.IllegalArgumentException e) {
+            // java.lang.IllegalArgumentException:
+            //     Unknown URI content://com.android.calendar/schedule_alarms_remove
+
+            // Until b/7742576 is resolved, just catch the exception so the app won't crash
+            Log.e(TAG, "update failed: " + e.toString());
+        }
+    }
+}