方式一：xml布局文件中添加属性

android:keepScreenOn="true"

方式二：Window设置flag

// 保持Activity屏幕常亮
getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
// 移除Activity屏幕常亮
getWindow().clearFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);

方式三：使用WakeLock(不推荐)

• 添加权限

<uses-permission android:name="android.permission.WAKE_LOCK" />

• PowerManager 获取WakeLock

val powerManager = getSystemService(POWER_SERVICE) as PowerManager
val wakeLock = powerManager.newWakeLock(PowerManager.FULL_WAKE_LOCK, "WakeLock")
override fun onResume() {
    super.onResume()
    wakeLock?.acquire()
}
override fun onPause() {
    super.onPause()
    wakeLock?.release();
}

• WakeLock相关Flag

  
  
  WakeLock-Flags.png

• PowerManager相关Flag

  
  
  PowerManager-Flags.png