Detect Battery Info.

In the last exercise "Detect Battery Level", the app simple detect the battery level only. It's modified to have more info to be displayed, include: battery level, voltage, temperature, technology, charging status, and health of the battery.



main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
   android:orientation="vertical"
   android:layout_width="fill_parent"
   android:layout_height="fill_parent"
   >
<TextView 
   android:layout_width="fill_parent"
   android:layout_height="wrap_content"
   android:text="@string/hello"
   />
<TextView 
   android:layout_width="fill_parent"
   android:layout_height="wrap_content"
   android:text="Battery Info."
   />
<TextView 
   android:id="@+id/batterylevel"
   android:layout_width="fill_parent"
   android:layout_height="wrap_content"
   android:text="Battery Level:"
   />
<TextView 
   android:id="@+id/batteryvoltage"
   android:layout_width="fill_parent"
   android:layout_height="wrap_content"
   android:text="Battery Voltage:"
   />
<TextView 
   android:id="@+id/batterytemperature"
   android:layout_width="fill_parent"
   android:layout_height="wrap_content"
   android:text="Battery Temperature:"
   />
<TextView 
   android:id="@+id/batterytechology"
   android:layout_width="fill_parent"
   android:layout_height="wrap_content"
   android:text="Technology:"
   />
<TextView 
   android:id="@+id/batterystatus"
   android:layout_width="fill_parent"
   android:layout_height="wrap_content"
   android:text="Status:"
   />
<TextView 
   android:id="@+id/batteryhealth"
   android:layout_width="fill_parent"
   android:layout_height="wrap_content"
   android:text="Health:"
   />
</LinearLayout>

AndroidBattery.java

package com.exercise.AndroidBattery;

import android.app.Activity;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.os.BatteryManager;
import android.os.Bundle;
import android.widget.TextView;

public class AndroidBattery extends Activity {

private TextView batteryLevel, batteryVoltage, batteryTemperature,
   batteryTechnology, batteryStatus, batteryHealth;


   /** Called when the activity is first created. */
   @Override
   public void onCreate(Bundle savedInstanceState) {
       super.onCreate(savedInstanceState);
       setContentView(R.layout.main);
      
       batteryLevel = (TextView)findViewById(R.id.batterylevel);
       batteryVoltage = (TextView)findViewById(R.id.batteryvoltage);
       batteryTemperature = (TextView)findViewById(R.id.batterytemperature);
       batteryTechnology = (TextView)findViewById(R.id.batterytechology);
       batteryStatus = (TextView)findViewById(R.id.batterystatus);
       batteryHealth = (TextView)findViewById(R.id.batteryhealth);
      
       this.registerReceiver(this.myBatteryReceiver,
         new IntentFilter(Intent.ACTION_BATTERY_CHANGED));
   }
  
   private BroadcastReceiver myBatteryReceiver
   = new BroadcastReceiver(){

 @Override
 public void onReceive(Context arg0, Intent arg1) {
  // TODO Auto-generated method stub

  if (arg1.getAction().equals(Intent.ACTION_BATTERY_CHANGED)){
   batteryLevel.setText("Level: "
     + String.valueOf(arg1.getIntExtra("level", 0)) + "%");
   batteryVoltage.setText("Voltage: "
     + String.valueOf((float)arg1.getIntExtra("voltage", 0)/1000) + "V");
   batteryTemperature.setText("Temperature: "
     + String.valueOf((float)arg1.getIntExtra("temperature", 0)/10) + "c");
   batteryTechnology.setText("Technology: " + arg1.getStringExtra("technology"));
  
   int status = arg1.getIntExtra("status", BatteryManager.BATTERY_STATUS_UNKNOWN);
   String strStatus;
   if (status == BatteryManager.BATTERY_STATUS_CHARGING){
    strStatus = "Charging";
   } else if (status == BatteryManager.BATTERY_STATUS_DISCHARGING){
    strStatus = "Dis-charging";
   } else if (status == BatteryManager.BATTERY_STATUS_NOT_CHARGING){
    strStatus = "Not charging";
   } else if (status == BatteryManager.BATTERY_STATUS_FULL){
    strStatus = "Full";
   } else {
    strStatus = "Unknown";
   }
   batteryStatus.setText("Status: " + strStatus);
  
   int health = arg1.getIntExtra("health", BatteryManager.BATTERY_HEALTH_UNKNOWN);
   String strHealth;
   if (health == BatteryManager.BATTERY_HEALTH_GOOD){
    strHealth = "Good";
   } else if (health == BatteryManager.BATTERY_HEALTH_OVERHEAT){
    strHealth = "Over Heat";
   } else if (health == BatteryManager.BATTERY_HEALTH_DEAD){
    strHealth = "Dead";
   } else if (health == BatteryManager.BATTERY_HEALTH_OVER_VOLTAGE){
    strHealth = "Over Voltage";
   } else if (health == BatteryManager.BATTERY_HEALTH_UNSPECIFIED_FAILURE){
    strHealth = "Unspecified Failure";
   } else{
    strHealth = "Unknown";
   }
   batteryHealth.setText("Health: " + strHealth);
  
  }
 }
   
   };
}

Download the files.

Related Article:
- Home Screen Battery Widget