android 申请忽略电池节电

      fun checkBattery(){
         var main = activity as MainActivity
         if(main.isIgnoringBatteryOptimizations()){
             Log.e("SplashFrgmt","在白名单")
         }else{
             Log.e("SplashFrgmt","不在白名单")
             main.requestIgnoreBatteryOptimizations()
         }
     }

     fun requestIgnoreBatteryOptimizations(){
         try {
             var intent = Intent(Settings.ACTION_REQUEST_IGNORE_BATTERY_OPTIMIZATIONS)
             intent.setData(Uri.parse("package:" + getPackageName()))
             val battery =
             startActivityForResult(intent,battery)
         } catch ( e : Exception) {
             e.printStackTrace()
         }
     }

  override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
         super.onActivityResult(requestCode, resultCode, data)
         val NOTIFY_PER =
         val BATTERY = 

         when(requestCode){
             NOTIFY_PER-> {
                 ...
             }
             BATTERY->{
                 var ret = isIgnoringBatteryOptimizations()
                 Log.e("requestCode","requestCode = $resultCode ,ret = $ret")
                 if(!ret){
                     Toast.makeText(baseContext,"申请忽略电池节电失败，锁屏后应用可能被杀！",Toast.LENGTH_LONG).show()
                 }
             }
         }
     }

fun checkBattery(){
    var main = activity as MainActivity
    if(main.isIgnoringBatteryOptimizations()){
        Log.e("SplashFrgmt","在白名单")
    }else{
        Log.e("SplashFrgmt","不在白名单")
        main.requestIgnoreBatteryOptimizations()
    }
}