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 
ActivityManagerCompatUtils()30     private ActivityManagerCompatUtils() {
31         // Do not instantiate this class.
32     }
33 
isLowRamDevice(Context context)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