1 /* 2 * Copyright (C) 2014 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.tv.settings; 18 19 import android.content.Context; 20 import android.content.Intent; 21 import android.content.pm.ApplicationInfo; 22 import android.content.pm.PackageManager; 23 import android.content.pm.ResolveInfo; 24 import android.support.v7.preference.Preference; 25 import android.support.v7.preference.PreferenceGroup; 26 27 import java.util.List; 28 29 /** 30 * Utilities for saving and loading shared prefs. 31 */ 32 public final class PreferenceUtils { 33 34 public static final int FLAG_SET_TITLE = 1; 35 resolveSystemActivityOrRemove(Context context, PreferenceGroup parent, Preference preference, int flags)36 public static void resolveSystemActivityOrRemove(Context context, PreferenceGroup parent, 37 Preference preference, int flags) { 38 if (preference == null) { 39 return; 40 } 41 42 Intent intent = preference.getIntent(); 43 if (intent != null) { 44 // Find the activity that is in the system image 45 PackageManager pm = context.getPackageManager(); 46 List<ResolveInfo> list = pm.queryIntentActivities(intent, 0); 47 for (final ResolveInfo resolveInfo : list) { 48 if ((resolveInfo.activityInfo.applicationInfo.flags & ApplicationInfo.FLAG_SYSTEM) 49 != 0) { 50 51 // Replace the intent with this specific activity 52 preference.setIntent(new Intent().setClassName( 53 resolveInfo.activityInfo.packageName, 54 resolveInfo.activityInfo.name)); 55 56 if ((flags & FLAG_SET_TITLE) != 0) { 57 // Set the preference title to the activity's label 58 preference.setTitle(resolveInfo.loadLabel(pm)); 59 } 60 61 return; 62 } 63 } 64 } 65 66 // Did not find a matching activity, so remove the preference 67 parent.removePreference(preference); 68 } 69 } 70