java - Battery Broadcast Not Triggered -

i have written below code in manifest:

<?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android"     package="jss.battery">      <application         android:allowbackup="true"         android:icon="@mipmap/ic_launcher"         android:label="@string/app_name"         android:roundicon="@mipmap/ic_launcher_round"         android:supportsrtl="true"         android:theme="@style/apptheme">         <activity android:name=".mainactivity">             <intent-filter>                 <action android:name="android.intent.action.main" />                  <category android:name="android.intent.category.launcher" />             </intent-filter>         </activity>          <receiver             android:name=".batteryreceiver">              <intent-filter >              <action android:name="android.intent.action.action_power_connected"/>               </intent-filter>           </receiver>     </application>  </manifest> 

and below code receiver:

public class batteryreceiver extends broadcastreceiver {       @override     public void onreceive(context context, intent intent) {         toast.maketext(context, "broadcast received", toast.length_long).show();}} 

but m not getting toast on app launch. , here code mainactivity:

public class mainactivity extends appcompatactivity {       @override     protected void oncreate(bundle savedinstancestate) {         super.oncreate(savedinstancestate);         setcontentview(r.layout.activity);     } } 

is there error in code? read many pages similar issue here none of solution worked. referred https://developer.android.com/training/monitoring-device-state/battery-monitoring.html#determinechargestate .at testing time battery level 80% +.

quoting the documentation, broadcast "will sent after action_battery_low once battery has gone okay state". in case, battery @ 80%, past low/okay dividing line (which think around 15%, might vary hardware or os version).