package com.example.test;

import android.app.Activity;
import android.os.Bundle;
import android.os.Handler;
import android.os.Looper;
import android.view.MotionEvent;
import android.view.WindowManager;

public class BaseActivity extends Activity {

	/**
	 * 最大的屏幕亮度
	 */
	float maxLight;
	/**
	 * 当前的亮度
	 */
	float currentLight;

	/**
	 * 用来控制屏幕亮度
	 */
	Handler handler;

	/**
	 * 延时时间
	 */
	long DenyTime = 5 * 1000L;

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		InitData();
	}

	private void InitData() {
		handler = new Handler(Looper.getMainLooper());
		maxLight = GetLightness(this);
	}

	/**
	 * 设置亮度
	 * 
	 * @param context
	 * @param light
	 */
	void SetLight(Activity context, int light) {
		currentLight = light;
		WindowManager.LayoutParams localLayoutParams = context.getWindow().getAttributes();
		localLayoutParams.screenBrightness = (light / 255.0F);
		context.getWindow().setAttributes(localLayoutParams);
	}

	/**
	 * 获取亮度
	 * 
	 * @param context
	 * @return
	 */
	float GetLightness(Activity context) {
		WindowManager.LayoutParams localLayoutParams = context.getWindow().getAttributes();
		float light = localLayoutParams.screenBrightness;
		return light;
	}

	@Override
	protected void onPause() {
		super.onPause();
		stopSleepTask();
	}

	@Override
	protected void onResume() {
		super.onResume();
		startSleepTask();
	}

	@Override
	public boolean dispatchTouchEvent(MotionEvent ev) {
		if (currentLight == 1) {
			startSleepTask();
		}
		return super.dispatchTouchEvent(ev);
	}

	/**
	 * 开启休眠任务
	 */
	void startSleepTask() {
		SetLight(this, (int) maxLight);
		handler.removeCallbacks(sleepWindowTask);
		handler.postDelayed(sleepWindowTask, DenyTime);
	}

	/**
	 * 结束休眠任务
	 */
	void stopSleepTask() {
		handler.removeCallbacks(sleepWindowTask);
	}

	/**
	 * 休眠任务
	 */
	Runnable sleepWindowTask = new Runnable() {

		@Override
		public void run() {
			SetLight(BaseActivity.this, 1);
		}
	};

}