Java Code Examples for android.content.pm.ActivityInfo#loadXmlMetaData()

/**
 * Gets search information for the given activity.
 *
 * @param context Context to use for reading activity resources.
 * @param activityInfo Activity to get search information from.
 * @return Search information about the given activity, or {@code null} if
 *         the activity has no or invalid searchability meta-data.
 *
 * @hide For use by SearchManagerService.
 */
public static SearchableInfo getActivityMetaData(Context context, ActivityInfo activityInfo,
        int userId) {
    Context userContext = null;
    try {
        userContext = context.createPackageContextAsUser("system", 0,
            new UserHandle(userId));
    } catch (NameNotFoundException nnfe) {
        Log.e(LOG_TAG, "Couldn't create package context for user " + userId);
        return null;
    }
    // for each component, try to find metadata
    XmlResourceParser xml = 
            activityInfo.loadXmlMetaData(userContext.getPackageManager(), MD_LABEL_SEARCHABLE);
    if (xml == null) {
        return null;
    }
    ComponentName cName = new ComponentName(activityInfo.packageName, activityInfo.name);
    
    SearchableInfo searchable = getActivityMetaData(userContext, xml, cName);
    xml.close();
    
    if (DBG) {
        if (searchable != null) {
            Log.d(LOG_TAG, "Checked " + activityInfo.name
                    + ",label=" + searchable.getLabelId()
                    + ",icon=" + searchable.getIconId()
                    + ",suggestAuthority=" + searchable.getSuggestAuthority()
                    + ",target=" + searchable.getSearchActivity().getClassName()
                    + ",global=" + searchable.shouldIncludeInGlobalSearch()
                    + ",settingsDescription=" + searchable.getSettingsDescriptionId()
                    + ",threshold=" + searchable.getSuggestThreshold());
        } else {
            Log.d(LOG_TAG, "Checked " + activityInfo.name + ", no searchable meta-data");
        }
    }
    return searchable;
}
 

/**
 * コンポーネントのActivityInfoを取得する.
 *
 * @param context コンテキスト
 * @param packageName package name
 * @return コンポーネントのActivityInfo
 */
private static ActivityInfo getReceiverInfo(final Context context, final String packageName) {
    try {
        PackageManager pkgMgr = context.getPackageManager();
        PackageInfo pkg = pkgMgr.getPackageInfo(packageName, PackageManager.GET_RECEIVERS);
        if (pkg != null) {
            ActivityInfo[] receivers = pkg.receivers;
            if (receivers != null) {
                for (int i = 0; i < receivers.length; i++) {
                    String pkgName = receivers[i].packageName;
                    String className = receivers[i].name;
                    ComponentName component = new ComponentName(pkgName, className);
                    ActivityInfo receiverInfo = pkgMgr.getReceiverInfo(component, PackageManager.GET_META_DATA);
                    if (receiverInfo.metaData != null) {
                        Object xmlData = receiverInfo.metaData.get(PLUGIN_META_DATA);
                        if (xmlData instanceof Integer) {
                            XmlResourceParser xrp = receiverInfo.loadXmlMetaData(pkgMgr, PLUGIN_META_DATA);
                            if (xrp != null) {
                                return receiverInfo;
                            }
                        }
                    }
                }
            }
        }
        return null;
    } catch (NameNotFoundException e) {
        return null;
    }
}
 

@Nullable
XmlResourceParser injectXmlMetaData(ActivityInfo activityInfo, String key) {
    return activityInfo.loadXmlMetaData(mContext.getPackageManager(), key);
}
 

/**
 * Inflates a preference hierarchy from the preference hierarchies of
 * {@link Activity Activities} that match the given {@link Intent}. An
 * {@link Activity} defines its preference hierarchy with meta-data using
 * the {@link #METADATA_KEY_PREFERENCES} key.
 * <p>
 * If a preference hierarchy is given, the new preference hierarchies will
 * be merged in.
 *
 * @param queryIntent The intent to match activities.
 * @param rootPreferences Optional existing hierarchy to merge the new
 *            hierarchies into.
 * @return The root hierarchy (if one was not provided, the new hierarchy's
 *         root).
 */
PreferenceScreen inflateFromIntent(Intent queryIntent, PreferenceScreen rootPreferences) {
    final List<ResolveInfo> activities = queryIntentActivities(queryIntent);
    final HashSet<String> inflatedRes = new HashSet<String>();

    for (int i = activities.size() - 1; i >= 0; i--) {
        final ActivityInfo activityInfo = activities.get(i).activityInfo;
        final Bundle metaData = activityInfo.metaData;

        if ((metaData == null) || !metaData.containsKey(METADATA_KEY_PREFERENCES)) {
            continue;
        }

        // Need to concat the package with res ID since the same res ID
        // can be re-used across contexts
        final String uniqueResId = activityInfo.packageName + ":"
                + activityInfo.metaData.getInt(METADATA_KEY_PREFERENCES);

        if (!inflatedRes.contains(uniqueResId)) {
            inflatedRes.add(uniqueResId);

            final Context context;
            try {
                context = mContext.createPackageContext(activityInfo.packageName, 0);
            } catch (NameNotFoundException e) {
                Log.w(TAG, "Could not create context for " + activityInfo.packageName + ": "
                        + Log.getStackTraceString(e));
                continue;
            }

            final PreferenceInflater inflater = new PreferenceInflater(context, this);
            final XmlResourceParser parser = activityInfo.loadXmlMetaData(context
                    .getPackageManager(), METADATA_KEY_PREFERENCES);
            rootPreferences = (PreferenceScreen) inflater
                    .inflate(parser, rootPreferences, true);
            parser.close();
        }
    }

    rootPreferences.onAttachedToHierarchy(this);

    return rootPreferences;
}
 

/**
 * Inflates a preference hierarchy from the preference hierarchies of
 * {@link Activity Activities} that match the given {@link Intent}. An
 * {@link Activity} defines its preference hierarchy with meta-data using
 * the {@link #METADATA_KEY_PREFERENCES} key.
 * <p>
 * If a preference hierarchy is given, the new preference hierarchies will
 * be merged in.
 *
 * @param queryIntent The intent to match activities.
 * @param rootPreferences Optional existing hierarchy to merge the new
 *            hierarchies into.
 * @return The root hierarchy (if one was not provided, the new hierarchy's
 *         root).
 */
PreferenceScreen inflateFromIntent(Intent queryIntent, PreferenceScreen rootPreferences) {
    final List<ResolveInfo> activities = queryIntentActivities(queryIntent);
    final HashSet<String> inflatedRes = new HashSet<String>();

    for (int i = activities.size() - 1; i >= 0; i--) {
        final ActivityInfo activityInfo = activities.get(i).activityInfo;
        final Bundle metaData = activityInfo.metaData;

        if ((metaData == null) || !metaData.containsKey(METADATA_KEY_PREFERENCES)) {
            continue;
        }

        // Need to concat the package with res ID since the same res ID
        // can be re-used across contexts
        final String uniqueResId = activityInfo.packageName + ":"
                + activityInfo.metaData.getInt(METADATA_KEY_PREFERENCES);

        if (!inflatedRes.contains(uniqueResId)) {
            inflatedRes.add(uniqueResId);

            final Context context;
            try {
                context = mContext.createPackageContext(activityInfo.packageName, 0);
            } catch (NameNotFoundException e) {
                Log.w(TAG, "Could not create context for " + activityInfo.packageName + ": "
                    + Log.getStackTraceString(e));
                continue;
            }

            final PreferenceInflater inflater = new PreferenceInflater(context, this);
            final XmlResourceParser parser = activityInfo.loadXmlMetaData(context
                    .getPackageManager(), METADATA_KEY_PREFERENCES);
            rootPreferences = (PreferenceScreen) inflater
                    .inflate(parser, rootPreferences, true);
            parser.close();
        }
    }

    rootPreferences.onAttachedToHierarchy(this);

    return rootPreferences;
}
 

/**
   * Inflates a preference hierarchy from the preference hierarchies of
   * {@link Activity Activities} that match the given {@link Intent}. An
   * {@link Activity} defines its preference hierarchy with meta-data using
   * the {@link #METADATA_KEY_PREFERENCES} key.
   * <p>
   * If a preference hierarchy is given, the new preference hierarchies will
   * be merged in.
   * 
   * @param queryIntent The intent to match activities.
   * @param rootPreferences Optional existing hierarchy to merge the new
   *            hierarchies into.
   * @return The root hierarchy (if one was not provided, the new hierarchy's
   *         root).
   */
  PreferenceScreen inflateFromIntent(Intent queryIntent, PreferenceScreen rootPreferences) {
      final List<ResolveInfo> activities = queryIntentActivities(queryIntent);
      final HashSet<String> inflatedRes = new HashSet<String>();

      for (int i = activities.size() - 1; i >= 0; i--) {
          final ActivityInfo activityInfo = activities.get(i).activityInfo;
          final Bundle metaData = activityInfo.metaData;

          if ((metaData == null) || !metaData.containsKey(METADATA_KEY_PREFERENCES)) {
              continue;
          }

          // Need to concat the package with res ID since the same res ID
          // can be re-used across contexts
          final String uniqueResId = activityInfo.packageName + ":"
                  + activityInfo.metaData.getInt(METADATA_KEY_PREFERENCES);
          
          if (!inflatedRes.contains(uniqueResId)) {
              inflatedRes.add(uniqueResId);

              final Context context;
              try {
                  context = mContext.createPackageContext(activityInfo.packageName, 0);
              } catch (NameNotFoundException e) {
                  Log.w(TAG, "Could not create context for " + activityInfo.packageName + ": "
                      + Log.getStackTraceString(e));
                  continue;
              }
              
              final PreferenceInflater inflater = new PreferenceInflater(context, this);
              final XmlResourceParser parser = activityInfo.loadXmlMetaData(context
                      .getPackageManager(), METADATA_KEY_PREFERENCES);
              //rootPreferences = (PreferenceScreen) inflater
//.inflate(parser, rootPreferences, true);
// TODO: could call out to stubs that returned actual
// values parsed from the XML if we really wanted to here
rootPreferences = new PreferenceScreen(context, null);
              //parser.close();
          }
      }

      rootPreferences.onAttachedToHierarchy(this);
      
      return rootPreferences;
  }
 

/**
 * Inflates a preference hierarchy from the preference hierarchies of
 * {@link Activity Activities} that match the given {@link Intent}. An
 * {@link Activity} defines its preference hierarchy with meta-data using
 * the {@link #METADATA_KEY_PREFERENCES} key.
 * <p>
 * If a preference hierarchy is given, the new preference hierarchies will
 * be merged in.
 * 
 * @param queryIntent The intent to match activities.
 * @param rootPreferences Optional existing hierarchy to merge the new
 *            hierarchies into.
 * @return The root hierarchy (if one was not provided, the new hierarchy's
 *         root).
 */
PreferenceScreen inflateFromIntent(Intent queryIntent, PreferenceScreen rootPreferences) {
    final List<ResolveInfo> activities = queryIntentActivities(queryIntent);
    final HashSet<String> inflatedRes = new HashSet<String>();

    for (int i = activities.size() - 1; i >= 0; i--) {
        final ActivityInfo activityInfo = activities.get(i).activityInfo;
        final Bundle metaData = activityInfo.metaData;

        if ((metaData == null) || !metaData.containsKey(METADATA_KEY_PREFERENCES)) {
            continue;
        }

        // Need to concat the package with res ID since the same res ID
        // can be re-used across contexts
        final String uniqueResId = activityInfo.packageName + ":"
                + activityInfo.metaData.getInt(METADATA_KEY_PREFERENCES);
        
        if (!inflatedRes.contains(uniqueResId)) {
            inflatedRes.add(uniqueResId);

            final Context context;
            try {
                context = mContext.createPackageContext(activityInfo.packageName, 0);
            } catch (NameNotFoundException e) {
                Log.w(TAG, "Could not create context for " + activityInfo.packageName + ": "
                    + Log.getStackTraceString(e));
                continue;
            }
            
            final PreferenceInflater inflater = new PreferenceInflater(context, this);
            final XmlResourceParser parser = activityInfo.loadXmlMetaData(context
                    .getPackageManager(), METADATA_KEY_PREFERENCES);
            rootPreferences = (PreferenceScreen) inflater
                    .inflate(parser, rootPreferences, true);
            parser.close();
        }
    }

    rootPreferences.onAttachedToHierarchy(this);
    
    return rootPreferences;
}