1 /* 2 * Copyright (C) 2013 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.inputmethod.compat; 18 19 import android.app.ActivityManager; 20 import android.content.Context; 21 22 import java.lang.reflect.Method; 23 24 public class ActivityManagerCompatUtils { 25 private static final Object LOCK = new Object(); 26 private static volatile Boolean sBoolean = null; 27 private static final Method METHOD_isLowRamDevice = CompatUtils.getMethod( 28 ActivityManager.class, "isLowRamDevice"); 29 30 private ActivityManagerCompatUtils() { 31 // Do not instantiate this class. 32 } 33 34 public static boolean isLowRamDevice(Context context) { 35 if (sBoolean == null) { 36 synchronized(LOCK) { 37 if (sBoolean == null) { 38 final ActivityManager am = 39 (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE); 40 sBoolean = (Boolean)CompatUtils.invoke(am, false, METHOD_isLowRamDevice); 41 } 42 } 43 } 44 return sBoolean; 45 } 46 } 47
