Rebranding to OpenTracks (code).

src/main/java/de/dennisguse/opentracks/util/SystemUtils.java

@@ -0,0 +1,89 @@
+/*
+ * Copyright 2011 Google Inc.
+ *
+ * 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 de.dennisguse.opentracks.util;
+
+import android.annotation.SuppressLint;
+import android.content.Context;
+import android.content.pm.PackageInfo;
+import android.content.pm.PackageManager;
+import android.content.pm.PackageManager.NameNotFoundException;
+import android.os.PowerManager;
+import android.os.PowerManager.WakeLock;
+import android.util.Log;
+
+/**
+ * Utility class for accessing basic Android functionality.
+ *
+ * @author Rodrigo Damazio
+ */
+public class SystemUtils {
+
+    private static final String TAG = SystemUtils.class.getSimpleName();
+
+    private SystemUtils() {
+    }
+
+    /**
+     * Get the app version from the manifest.
+     *
+     * @return the version, or an empty string in case of failure.
+     */
+    public static String getAppVersion(Context context) {
+        try {
+            PackageInfo pi = context.getPackageManager()
+                    .getPackageInfo("de.dennisguse.opentracks", PackageManager.GET_META_DATA);
+            return pi.versionName;
+        } catch (NameNotFoundException e) {
+            Log.w(TAG, "Failed to get version info.", e);
+            return "";
+        }
+    }
+
+    /**
+     * Acquire a wake lock if not already acquired.
+     *
+     * @param context  the context
+     * @param wakeLock wake lock or null
+     */
+    @SuppressLint("WakelockTimeout")
+    public static WakeLock acquireWakeLock(Context context, WakeLock wakeLock) {
+        Log.i(TAG, "Acquiring wake lock.");
+        try {
+            PowerManager powerManager = (PowerManager) context.getSystemService(Context.POWER_SERVICE);
+            if (powerManager == null) {
+                Log.e(TAG, "Power manager null.");
+                return wakeLock;
+            }
+            if (wakeLock == null) {
+                wakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, TAG);
+                if (wakeLock == null) {
+                    Log.e(TAG, "Cannot create a new wake lock.");
+                    return null;
+                }
+            }
+            if (!wakeLock.isHeld()) {
+                wakeLock.acquire();
+                if (!wakeLock.isHeld()) {
+                    Log.e(TAG, "Cannot acquire wake lock.");
+                }
+            }
+        } catch (RuntimeException e) {
+            Log.e(TAG, e.getMessage(), e);
+        }
+        return wakeLock;
+    }
+}