v4/java/android/support/v4/app/ActivityManagerCompat.java

/*
 * Copyright (C) 2014 The Android Open Source Project
 *
 * 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 android.support.v4.app;

import android.app.ActivityManager;
import android.os.Build;
import android.support.annotation.NonNull;

/**
 * Helper for accessing features in {@link android.app.ActivityManager}
 * introduced after API level 4 in a backwards compatible fashion.
 */
public final class ActivityManagerCompat {
    private ActivityManagerCompat() {
    }

    /**
     * Returns true if this is a low-RAM device.  Exactly whether a device is low-RAM
     * is ultimately up to the device configuration, but currently it generally means
     * something in the class of a 512MB device with about a 800x480 or less screen.
     * This is mostly intended to be used by apps to determine whether they should turn
     * off certain features that require more RAM.
     */
    public static boolean isLowRamDevice(@NonNull ActivityManager am) {
        if (Build.VERSION.SDK_INT >= 19) {
            return ActivityManagerCompatKitKat.isLowRamDevice(am);
        }
        return false;
    }
}