Android实现长时间不用屏幕变暗

来源：互联网发布：特殊符号软件下载编辑：程序博客网时间：2024/05/17 03:12
直接上代码，代码如下：
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);          }      };     }
0 0