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The Android Open Source Project
2009-03-03 18:28:52 -08:00
parent a578a6c4ad
commit 4e14e5ccbf
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src/com/android/settings/Utils.java
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/**
* 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;
}
}