i found this code on Intel android developer site
public class BatteryActivity extends Activity {
private final String TAG = "SDP_BATTERY";
private final String DEGREE_UNICODE = "\u00B0";
private StringBuffer textBuffer = new StringBuffer();
// a text view to show the status of the battery
private TextView mStatusTextView;
// a text view to display the battery status icon
private TextView mBatteryStatusIcon;
/** Called when the activity is first created. */
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.battery);
mBatteryStatusIcon = (TextView) this.findViewById(R.id.statusBattIcon);
mStatusTextView = (TextView) this.findViewById(R.id.statusEditText);
}
/**
* Once onResume is called, the activity has become visible (it is now "resumed"). Comes after onCreate
*/
protected void onResume() {
super.onResume();
IntentFilter filter = new IntentFilter();
filter.addAction(Intent.ACTION_BATTERY_CHANGED);
Log.d(TAG, "Register battery status receiver.");
registerReceiver(mBroadcastReceiver, filter);
}
/**
* Another activity takes focus, so this activity goes to "paused" state
*/
protected void onPause() {
super.onPause();
Log.d(TAG, "Unegister battery status receiver.");
unregisterReceiver(mBroadcastReceiver);
}
/**
* BroadcastReceiver is used for receiving intents (broadcasted messages) from the BatteryManager
*/
private BroadcastReceiver mBroadcastReceiver = new BroadcastReceiver() {
private boolean isHealth = false;
public void onReceive(Context context, Intent intent) {
DecimalFormat formatter = new DecimalFormat();
String action = intent.getAction();
// store battery information received from BatteryManager
if (action.equals(Intent.ACTION_BATTERY_CHANGED)) {
Log.d(TAG, "Received battery status information.");
int status = intent.getIntExtra(BatteryManager.EXTRA_STATUS, 0);
int health = intent.getIntExtra(BatteryManager.EXTRA_HEALTH, 0);
boolean present = intent.getBooleanExtra(
BatteryManager.EXTRA_PRESENT, false);
int level = intent.getIntExtra(BatteryManager.EXTRA_LEVEL, 0);
int scale = intent.getIntExtra(BatteryManager.EXTRA_SCALE, 0);
int icon_small = intent.getIntExtra(
BatteryManager.EXTRA_ICON_SMALL, 0);
int plugged = intent.getIntExtra(BatteryManager.EXTRA_PLUGGED,
0);
int voltage = intent.getIntExtra(BatteryManager.EXTRA_VOLTAGE,
0);
int temperature = intent.getIntExtra(
BatteryManager.EXTRA_TEMPERATURE, 0);
String technology = intent
.getStringExtra(BatteryManager.EXTRA_TECHNOLOGY);
// display the battery icon that fits the current battery status (charging/discharging)
mBatteryStatusIcon.setCompoundDrawablesWithIntrinsicBounds(icon_small, 0, 0, 0);
// create TextView of the remaining information , to display to screen.
String statusString = "";
switch (status) {
case BatteryManager.BATTERY_STATUS_UNKNOWN:
statusString = "unknown";
break;
case BatteryManager.BATTERY_STATUS_CHARGING:
statusString = "charging";
break;
case BatteryManager.BATTERY_STATUS_DISCHARGING:
statusString = "discharging";
break;
case BatteryManager.BATTERY_STATUS_NOT_CHARGING:
statusString = "not charging";
break;
case BatteryManager.BATTERY_STATUS_FULL:
statusString = "full";
break;
}
String healthString = "";
switch (health) {
case BatteryManager.BATTERY_HEALTH_UNKNOWN:
healthString = "unknown";
break;
case BatteryManager.BATTERY_HEALTH_GOOD:
healthString = "good";
isHealth = true;
break;
case BatteryManager.BATTERY_HEALTH_OVERHEAT:
healthString = "overheat";
break;
case BatteryManager.BATTERY_HEALTH_DEAD:
healthString = "dead";
break;
case BatteryManager.BATTERY_HEALTH_OVER_VOLTAGE:
healthString = "over voltage";
break;
case BatteryManager.BATTERY_HEALTH_UNSPECIFIED_FAILURE:
healthString = "unspecified failure";
break;
}
String acString = "";
switch (plugged) {
case BatteryManager.BATTERY_PLUGGED_AC:
acString = "plugged AC";
break;
case BatteryManager.BATTERY_PLUGGED_USB:
acString = "plugged USB";
break;
default:
acString = "not plugged";
}
textBuffer = new StringBuffer();
textBuffer.append("status:" + statusString + "\n");
formatter.applyPattern("#");
String levelStr = formatter.format( (float)level/scale * 100 );
textBuffer.append("level:" + levelStr + "% (out of 100)\n");
textBuffer.append("health:" + healthString + "\n");
textBuffer.append("present?:" + String.valueOf(present) + "\n");
textBuffer.append("plugged?:" + acString + "\n");
// voltage is reported in millivolts
formatter.applyPattern(".##");
String voltageStr = formatter.format( (float)voltage/1000 );
textBuffer.append("voltage:" + voltageStr + "V\n");
// temperature is reported in tenths of a degree Centigrade (from BatteryService.java)
formatter.applyPattern(".#");
String temperatureStr = formatter.format( (float)temperature/10 );
textBuffer.append("temperature:" + temperatureStr
+ "C" + DEGREE_UNICODE + "\n");
textBuffer.append("technology:" + String.valueOf(technology)
+ "\n");
mStatusTextView.setText(textBuffer.toString());
if (isHealth) {
Log.d(TAG, "Battery health: " + healthString);
Log.d(TAG, "UMSE_BATTERY_SUCCESSFULLY");
} else {
Log.d(TAG, "UMSE_BATTERY_FAILED");
}
Log.d(TAG, textBuffer.toString());
//finish();
}
}
};
