ScreenWakeLock.java

/*
 * Tencent is pleased to support the open source community by making
 * Tencent GT (Version 2.4 and subsequent versions) available.
 *
 * Notwithstanding anything to the contrary herein, any previous version
 * of Tencent GT shall not be subject to the license hereunder.
 * All right, title, and interest, including all intellectual property rights,
 * in and to the previous version of Tencent GT (including any and all copies thereof)
 * shall be owned and retained by Tencent and subject to the license under the
 * Tencent GT End User License Agreement (http://gt.qq.com/wp-content/EULA_EN.html).
 * 
 * Copyright (C) 2015 THL A29 Limited, a Tencent company. All rights reserved.
 * 
 * Licensed under the MIT License (the "License"); you may not use this file
 * except in compliance with the License. You may obtain a copy of the License at
 * 
 * http://opensource.org/licenses/MIT
 * 
 * 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 com.tencent.wstt.gt.plugin.screenlock;

import android.content.Context;
import android.os.PowerManager;
import android.os.PowerManager.WakeLock;

public class ScreenWakeLock {

	private static WakeLock wl = null;
	public static boolean flag = false; 

	public static void toggle(Context context) {
		if (wl == null) {
			PowerManager pm = (PowerManager) context
					.getSystemService(Context.POWER_SERVICE);
			wl = pm.newWakeLock(PowerManager.SCREEN_BRIGHT_WAKE_LOCK
					| PowerManager.ACQUIRE_CAUSES_WAKEUP,
					"GTScreenWakeLock");
		}
		
		if (flag == false) {
			flag = true;
			wl.acquire();
		} else {
			flag = false;
			wl.release();
		}
	}

}