1 /* 2 * Copyright (C) 2011 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.settings.applications; 18 19 import android.content.pm.ActivityInfo; 20 import android.content.res.Configuration; 21 import android.content.res.Resources; 22 23 class InterestingConfigChanges { 24 final Configuration mLastConfiguration = new Configuration(); 25 int mLastDensity; 26 applyNewConfig(Resources res)27 boolean applyNewConfig(Resources res) { 28 int configChanges = mLastConfiguration.updateFrom(res.getConfiguration()); 29 boolean densityChanged = mLastDensity != res.getDisplayMetrics().densityDpi; 30 if (densityChanged || (configChanges&(ActivityInfo.CONFIG_LOCALE 31 |ActivityInfo.CONFIG_UI_MODE|ActivityInfo.CONFIG_SCREEN_LAYOUT)) != 0) { 32 mLastDensity = res.getDisplayMetrics().densityDpi; 33 return true; 34 } 35 return false; 36 } 37 } 38