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
