An end-to-end test case of MyTracks.

2012-04-24 19:38:32 +08:00
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+/*
+ * Copyright 2012 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 com.google.android.apps.mytracks.util;
+
+import com.google.android.apps.mytracks.Constants;
+import com.google.android.maps.mytracks.R;
+
+import android.content.Context;
+import android.content.SharedPreferences;
+import android.content.SharedPreferences.Editor;
+
+/**
+ * Utilities to access preferences stored in {@link SharedPreferences}.
+ * 
+ * @author Jimmy Shih
+ */
+public class PreferencesUtils {
+
+  private PreferencesUtils() {}
+
+  /**
+   * Gets the recording track id key.
+   * 
+   * @param context the context
+   */
+  public static String getRecordingTrackIdKey(Context context) {
+    return getKey(context, R.string.recording_track_id_key);
+  }
+
+  /**
+   * Gets the recording track id.
+   * 
+   * @param context the context
+   */
+  public static long getRecordingTrackId(Context context) {
+    return getLong(context, R.string.recording_track_id_key);
+  }
+
+  /**
+   * Sets the recording track id.
+   * 
+   * @param context the context
+   * @param trackId the track id
+   */
+  public static void setRecordingTrackId(Context context, long trackId) {
+    setLong(context, R.string.recording_track_id_key, trackId);
+  }
+
+  /**
+   * Gets the selected track id key.
+   * 
+   * @param context the context
+   */
+  public static String getSelectedTrackIdKey(Context context) {
+    return getKey(context, R.string.selected_track_id_key);
+  }
+
+  /**
+   * Gets the selected track id.
+   * 
+   * @param context the context
+   */
+  public static long getSelectedTrackId(Context context) {
+    return getLong(context, R.string.selected_track_id_key);
+  }
+
+  /**
+   * Sets the selected track id.
+   * 
+   * @param context the context
+   * @param trackId the track id
+   */
+  public static void setSelectedTrackId(Context context, long trackId) {
+    setLong(context, R.string.selected_track_id_key, trackId);
+  }
+
+  /**
+   * Gets a preference key
+   * 
+   * @param context the context
+   * @param keyId the key id
+   */
+  private static String getKey(Context context, int keyId) {
+    return context.getString(keyId);
+  }
+
+  /**
+   * Gets a long preference value.
+   * 
+   * @param context the context
+   * @param keyId the key id
+   */
+  private static long getLong(Context context, int keyId) {
+    SharedPreferences sharedPreferences = context.getSharedPreferences(
+        Constants.SETTINGS_NAME, Context.MODE_PRIVATE);
+    return sharedPreferences.getLong(getKey(context, keyId), -1L);
+  }
+
+  /**
+   * Sets a long preference value.
+   * 
+   * @param context the context
+   * @param keyId the key id
+   * @param value the value
+   */
+  private static void setLong(Context context, int keyId, long value) {
+    SharedPreferences sharedPreferences = context.getSharedPreferences(
+        Constants.SETTINGS_NAME, Context.MODE_PRIVATE);
+    Editor editor = sharedPreferences.edit();
+    editor.putLong(getKey(context, keyId), value);
+    ApiAdapterFactory.getApiAdapter().applyPreferenceChanges(editor);
+  }
+}