BootCountUtil.java
/*
* Copyright 2022 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 androidx.appsearch.utils;
import static androidx.annotation.RestrictTo.Scope.LIBRARY;
import android.content.Context;
import android.os.Build;
import android.provider.Settings;
import androidx.annotation.DoNotInline;
import androidx.annotation.NonNull;
import androidx.annotation.RequiresApi;
import androidx.annotation.RestrictTo;
/**
* Helper class for device boot count.
*
* @hide
*/
@RestrictTo(LIBRARY)
public class BootCountUtil {
private BootCountUtil() {}
/**
* Returns the current boot count of the device if available. Otherwise return -1.
*/
public static int getCurrentBootCount(@NonNull Context context) {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) {
return Api17Impl.getCurrentBootCount(context);
}
return -1;
}
@RequiresApi(Build.VERSION_CODES.JELLY_BEAN_MR1)
private static final class Api17Impl {
@DoNotInline
static int getCurrentBootCount(@NonNull Context context) {
return Settings.Global.getInt(context.getContentResolver(),
Settings.Global.BOOT_COUNT, -1);
}
private Api17Impl() {}
}
}