Android battery low, battery percentage, battery status (charging or not), Battery Health BroadcastReceiver example

 Android battery low, battery percentage, battery status (charging or not) BroadcastReceiver example

1 / battery low BroadcastReceiver

 1.1 / Create A Class BatteryLowReceiver class and extends BroadcastReceiver,

package com.example.batterylowbroadcastreceiver;

import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.util.Log;
import android.widget.Toast;

public class BatteryLowReceiver extends BroadcastReceiver {
    @Override
    public void onReceive(Context context, Intent intent) {
        String action = intent.getAction();
        if(action != null){
            if(action.equals(Intent.ACTION_BATTERY_LOW)){
                Log.d("BatteryLowReceiver", "Battery is low");
                Toast.makeText(context, "Battery is low", Toast.LENGTH_SHORT).show();
            }
        }
    }
}

 

1.2 / Active registerReceiver In MainActivity

package com.example.batterylowbroadcastreceiver;

import androidx.appcompat.app.AppCompatActivity;

import android.content.Intent;
import android.content.IntentFilter;
import android.os.Bundle;

public class MainActivity extends AppCompatActivity {
    BatteryLowReceiver batteryLowReceiver = new BatteryLowReceiver();
    IntentFilter intentFilter;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        intentFilter = new IntentFilter(Intent.ACTION_BATTERY_LOW);
        registerReceiver(batteryLowReceiver, intentFilter);
    }

    @Override
    protected void onDestroy() {
        super.onDestroy();
        unregisterReceiver(batteryLowReceiver);
    }
}

 

1.3 / Then Change AndroidManifest.xml (Add receiver in the application )

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools">

    <application
        android:allowBackup="true"
        android:dataExtractionRules="@xml/data_extraction_rules"
        android:fullBackupContent="@xml/backup_rules"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:theme="@style/Theme.BatteryLowBroadcastReceiver"
        tools:targetApi="31">
        <activity
            android:name=".MainActivity"
            android:exported="true">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <receiver android:name=".BatteryLowReceiver"
            android:exported="true">
            <intent-filter>
                <action android:name="android.intent.action.BATTERY_LOW" />
            </intent-filter>
        </receiver>
    </application>

</manifest>

 

 Now run the application. Toast will show when the device charge is low.

2 / battery percentage BroadcastReceiver 

 2.1 / Create A Class BatteryStatusReceiver class and extends BroadcastReceiver

package com.example.batterystatusbroadcastreceiver;

import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.os.BatteryManager;
import android.widget.Toast;

public class BatteryStatusReceiver extends BroadcastReceiver {
    @Override
    public void onReceive(Context context, Intent intent) {
        int batteryLevel = intent.getIntExtra(BatteryManager.EXTRA_LEVEL, -1);

        int batteryScale = intent.getIntExtra(BatteryManager.EXTRA_SCALE, -1);

        float batteryPercentageDecimal = batteryLevel / (float) batteryScale * 100;

        int batteryPercentage = (int) batteryPercentageDecimal;

        Toast.makeText(context, "Your phone battery level: " + batteryPercentage + "%", Toast.LENGTH_SHORT).show();
    }
}

 

package com.example.batterystatusbroadcastreceiver;

import androidx.appcompat.app.AppCompatActivity;

import android.content.Intent;
import android.content.IntentFilter;
import android.os.Bundle;

public class MainActivity extends AppCompatActivity {
    BatteryStatusReceiver batteryStatusReceiver = new BatteryStatusReceiver();
    IntentFilter intentFilter;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        intentFilter = new IntentFilter(Intent.ACTION_BATTERY_CHANGED);
        registerReceiver(batteryStatusReceiver, intentFilter);
    }

    @Override
    protected void onDestroy() {
        super.onDestroy();
        unregisterReceiver(batteryStatusReceiver);
    }
}

 

 2.3 / Then Change AndroidManifest.xml (Give Permissions and Add receiver in the application )

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools">

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

    <application
        android:allowBackup="true"
        android:dataExtractionRules="@xml/data_extraction_rules"
        android:fullBackupContent="@xml/backup_rules"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:theme="@style/Theme.BatteryStatusBroadcastReceiver"
        tools:targetApi="31">
        <activity
            android:name=".MainActivity"
            android:exported="true">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <receiver android:name=".BatteryStatusReceiver"
            android:exported="true">
            <intent-filter>
                <action android:name="android.intent.action.BATTERY_CHANGED" />
            </intent-filter>
        </receiver>
    </application>

</manifest>

 

Now run the application. Toast will show the percentage of battery level.

3 / battery status (charging or not)  BroadcastReceiver

 3.1 / Create A Class ChargerStatusReceiver class and extends BroadcastReceiver

package com.example.chargerconnectedornotbroadcastreceiver;

import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.os.BatteryManager;
import android.util.Log;
import android.widget.Toast;

public class ChargerStatusReceiver extends BroadcastReceiver {
    @Override
    public void onReceive(Context context, Intent intent) {


        int status = intent.getIntExtra(BatteryManager.EXTRA_STATUS, -1);
        boolean isCharging = (status == BatteryManager.BATTERY_STATUS_CHARGING || status == BatteryManager.BATTERY_STATUS_FULL);

        if (isCharging) {
            Log.d("ChargerStatusReceiver", "Your phone is charging");
            Toast.makeText(context, "Your phone is charging", Toast.LENGTH_SHORT).show();
        } else {
            Log.d("ChargerStatusReceiver", "Your phone is not charging");
            Toast.makeText(context, "Your phone is not charging", Toast.LENGTH_SHORT).show();
        }
    }
}

 

package com.example.chargerconnectedornotbroadcastreceiver;

import androidx.appcompat.app.AppCompatActivity;

import android.content.Intent;
import android.content.IntentFilter;
import android.os.Bundle;

public class MainActivity extends AppCompatActivity {
    ChargerStatusReceiver chargerStatusReceiver = new ChargerStatusReceiver();
    IntentFilter intentFilter;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        intentFilter = new IntentFilter(Intent.ACTION_BATTERY_CHANGED);
        registerReceiver(chargerStatusReceiver, intentFilter);
    }

    @Override
    protected void onDestroy() {
        super.onDestroy();
        unregisterReceiver(chargerStatusReceiver);
    }
}

 

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools">

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

    <application
        android:allowBackup="true"
        android:dataExtractionRules="@xml/data_extraction_rules"
        android:fullBackupContent="@xml/backup_rules"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:theme="@style/Theme.ChargerConnectedOrNotBroadcastReceiver"
        tools:targetApi="31">
        <activity
            android:name=".MainActivity"
            android:exported="true">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>

        <receiver android:name=".ChargerStatusReceiver"
            android:exported="true">
            <intent-filter>
                <action android:name="android.intent.action.BATTERY_CHANGED" />
            </intent-filter>
        </receiver>
    </application>

</manifest>

 

  Now run the application and connect the phone to the charger. Toast will show whether your device is charging or not.

4 / battery health status  BroadcastReceiver

 4.1 / Create A Class BatteryHealthReceiver class and extends BroadcastReceiver

package com.example.batteryhealthbroadcastreceiver;

import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.os.BatteryManager;
import android.util.Log;
import android.widget.Toast;

public class BatteryHealthReceiver extends BroadcastReceiver {
    @Override
    public void onReceive(Context context, Intent intent) {
        String action = intent.getAction();

        if (action.equals(Intent.ACTION_BATTERY_CHANGED)){
            int batterHealth = intent.getIntExtra(BatteryManager.EXTRA_HEALTH,BatteryManager.BATTERY_HEALTH_UNKNOWN);

            if(batterHealth == BatteryManager.BATTERY_HEALTH_GOOD){
                Log.d("BatteryHealthReceiver", "Battery health is good");
                Toast.makeText(context, "Battery health is good", Toast.LENGTH_SHORT).show();
            }
            else if (batterHealth == BatteryManager.BATTERY_HEALTH_COLD){
                Log.d("BatteryHealthReceiver", "Battery health is cold");
                Toast.makeText(context, "Battery health is cold", Toast.LENGTH_SHORT).show();
            }
            else if (batterHealth == BatteryManager.BATTERY_HEALTH_DEAD){
                Log.d("BatteryHealthReceiver", "Battery health is dead");
                Toast.makeText(context, "Battery health is dead", Toast.LENGTH_SHORT).show();
            }
            else if (batterHealth == BatteryManager.BATTERY_HEALTH_OVERHEAT){
                Log.d("BatteryHealthReceiver", "Battery health is overheat");
                Toast.makeText(context, "Battery health is overheat", Toast.LENGTH_SHORT).show();
            }
            else if (batterHealth == BatteryManager.BATTERY_HEALTH_UNKNOWN){
                Log.d("BatteryHealthReceiver", "Battery health is unknown");
                Toast.makeText(context, "Battery health is unknown", Toast.LENGTH_SHORT).show();
            }
            else if (batterHealth == BatteryManager.BATTERY_HEALTH_OVER_VOLTAGE){
                Log.d("BatteryHealthReceiver", "Battery health is over voltage");
                Toast.makeText(context, "Battery health is over voltage", Toast.LENGTH_SHORT).show();
            }
            else if (batterHealth == BatteryManager.BATTERY_HEALTH_UNSPECIFIED_FAILURE){
                Log.d("BatteryHealthReceiver", "Battery health is over unspecified");
                Toast.makeText(context, "Battery health is over unspecified", Toast.LENGTH_SHORT).show();
            }
        }
    }
}
 

4.2 / Active registerReceiver In MainActivity

package com.example.batteryhealthbroadcastreceiver;

import androidx.appcompat.app.AppCompatActivity;

import android.content.Intent;
import android.content.IntentFilter;
import android.os.Bundle;

public class MainActivity extends AppCompatActivity {

    BatteryHealthReceiver batteryHealthReceiver = new BatteryHealthReceiver();
    IntentFilter intentFilter;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        intentFilter = new IntentFilter(Intent.ACTION_BATTERY_CHANGED);
        registerReceiver(batteryHealthReceiver, intentFilter);
    }

    @Override
    protected void onDestroy() {
        super.onDestroy();
        unregisterReceiver(batteryHealthReceiver);
    }
}
 

 4.3  /  Then Change AndroidManifest.xml (Give Permissions and Add receiver in the application )

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools">

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

    <application
        android:allowBackup="true"
        android:dataExtractionRules="@xml/data_extraction_rules"
        android:fullBackupContent="@xml/backup_rules"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:theme="@style/Theme.BatteryHealthBroadcastReceiver"
        tools:targetApi="31">
        <activity
            android:name=".MainActivity"
            android:exported="true">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <receiver android:name=".BatteryHealthReceiver"
            android:exported="true">
            <intent-filter>
                <action android:name="android.intent.action.BATTERY_CHANGED" />
            </intent-filter>
        </receiver>
    </application>

</manifest>
 

Now run the application. Toast will show the battery level.