1 files changed, 91 insertions, 0 deletions
diff --git a/src/com/android/settings/Utils.java b/src/com/android/settings/Utils.java
new file mode 100644
index 000000000..a23272b81
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+++ b/src/com/android/settings/Utils.java
@@ -0,0 +1,91 @@
+/**
+ * Copyright (C) 2007 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.android.settings;
+
+import android.content.Context;
+import android.content.Intent;
+import android.content.pm.ApplicationInfo;
+import android.content.pm.PackageManager;
+import android.content.pm.ResolveInfo;
+import android.preference.Preference;
+import android.preference.PreferenceGroup;
+
+import java.util.List;
+
+public class Utils {
+
+    /**
+     * Set the preference's title to the matching activity's label.
+     */
+    public static final int UPDATE_PREFERENCE_FLAG_SET_TITLE_TO_MATCHING_ACTIVITY = 1;
+
+    /**
+     * Finds a matching activity for a preference's intent. If a matching
+     * activity is not found, it will remove the preference.
+     * 
+     * @param context The context.
+     * @param parentPreferenceGroup The preference group that contains the
+     *            preference whose intent is being resolved.
+     * @param preferenceKey The key of the preference whose intent is being
+     *            resolved.
+     * @param flags 0 or one or more of
+     *            {@link #UPDATE_PREFERENCE_FLAG_SET_TITLE_TO_MATCHING_ACTIVITY}
+     *            .
+     * @return Whether an activity was found. If false, the preference was
+     *         removed.
+     */
+    public static boolean updatePreferenceToSpecificActivityOrRemove(Context context,
+            PreferenceGroup parentPreferenceGroup, String preferenceKey, int flags) {
+        
+        Preference preference = parentPreferenceGroup.findPreference(preferenceKey);
+        if (preference == null) {
+            return false;
+        }
+        
+        Intent intent = preference.getIntent();
+        if (intent != null) {
+            // Find the activity that is in the system image
+            PackageManager pm = context.getPackageManager();
+            List<ResolveInfo> list = pm.queryIntentActivities(intent, 0);
+            int listSize = list.size();
+            for (int i = 0; i < listSize; i++) {
+                ResolveInfo resolveInfo = list.get(i);
+                if ((resolveInfo.activityInfo.applicationInfo.flags & ApplicationInfo.FLAG_SYSTEM)
+                        != 0) {
+                    
+                    // Replace the intent with this specific activity
+                    preference.setIntent(new Intent().setClassName(
+                            resolveInfo.activityInfo.packageName,
+                            resolveInfo.activityInfo.name));
+
+                    if ((flags & UPDATE_PREFERENCE_FLAG_SET_TITLE_TO_MATCHING_ACTIVITY) != 0) {
+                        // Set the preference title to the activity's label
+                        preference.setTitle(resolveInfo.loadLabel(pm));
+                    }
+                    
+                    return true;
+                }
+            }
+        }
+
+        // Did not find a matching activity, so remove the preference
+        parentPreferenceGroup.removePreference(preference);
+        
+        return true;
+    }
+    
+}