Android Detect Battery Info.

The app simple detect battery level, voltage, temperature, technology, charging status, and health of the battery.

Activity


 public class MainActivity 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.activity_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);

            }
        }

    };
}

XML activity_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="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>

Android Toast notification show Different Gravity

Toast notify we can show in different gravity like "TOP", "RIGHT", "LEFT", "BOTTOM",etc.

public class MainActivity extends Activity {

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
       
       
        Toast t = Toast.makeText(MainActivity.this, "TOP | RIGHT", Toast.LENGTH_LONG);
        t.setGravity(Gravity.TOP|Gravity.RIGHT, 0, 0);
        t.show();
       
        t = Toast.makeText(MainActivity.this, "CENTER", Toast.LENGTH_LONG);
        t.setGravity(Gravity.CENTER, 0, 0);
        t.show();
       
        t = Toast.makeText(MainActivity.this, "BOTTOM | LEFT", Toast.LENGTH_LONG);
        t.setGravity(Gravity.BOTTOM|Gravity.LEFT, 0, 0);
        t.show();
       
        t = Toast.makeText(MainActivity.this, "CENTER | LEFT", Toast.LENGTH_LONG);
        t.setGravity(Gravity.CENTER|Gravity.LEFT, 0, 0);
        t.show();
    
    }
   
    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.activity_main, menu);
        return true;
    }
}

Android Google Mapview

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="Waiting for location..."
    android:id="@+id/lblLocationInfo"/>
  <!-- <1> -->
 
 
  
<com.google.android.maps.MapView android:id="@+id/mapview"
   android:apiKey="0dv9akiSW0I8Vvu5Ht_ScUSAEA6tngHm7Sta1ZA"      
    android:enabled="true"
   
    android:clickable="true"
    android:focusableInTouchMode="true"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    />

   
</LinearLayout>

map.java

public class map extends MapActivity implements LocationListener { //<1>
     
      private static final String TAG = "LocationActivity";

      LocationManager locationManager; //<2>
      Geocoder geocoder; //<3>
      TextView locationText;
      MapView map; 
      MapController mapController; //<4>
     
     
      public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
       
        locationText = (TextView)this.findViewById(R.id.lblLocationInfo);
        map = (MapView)this.findViewById(R.id.mapview);
        map.setBuiltInZoomControls(true);
       
        mapController = map.getController(); //<4>
        mapController.setZoom(16);
       
        locationManager = (LocationManager)this.getSystemService(LOCATION_SERVICE); //<2>
       
        geocoder = new Geocoder(this); //<3>
       
        Location location = locationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER); //<5>
        if (location != null) {
          Log.d(TAG, location.toString());
          this.onLocationChanged(location); //<6>
        }
      }

     
      protected void onResume() {
        super.onResume();
        locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 1000, 10, this); //<7>
      }

     
      protected void onPause() {
        super.onPause();
        locationManager.removeUpdates(this); //<8>
      }

     
      public void onLocationChanged(Location location) { //<9>
        Log.d(TAG, "onLocationChanged with location " + location.toString());
        String text = String.format("Lat:\t %f\nLong:\t %f\nAlt:\t %f\nBearing:\t %f", location.getLatitude(),
                      location.getLongitude(), location.getAltitude(), location.getBearing());
        this.locationText.setText(text);
       
        try {
          List<Address> addresses = geocoder.getFromLocation(location.getLatitude(), location.getLongitude(), 10); //<10>
          for (Address address : addresses) {
            this.locationText.append("\n" + address.getAddressLine(0));
          }
         
          int latitude = (int)(location.getLatitude() * 1000000);
          int longitude = (int)(location.getLongitude() * 1000000);

          GeoPoint point = new GeoPoint(latitude,longitude);
          mapController.animateTo(point); //<11>
         
        } catch (IOException e) {
          Log.e("LocateMe", "Could not get Geocoder data", e);
        }
      }

   
    protected boolean isRouteDisplayed() {
        // TODO Auto-generated method stub
        return false;
    }

   
    public void onProviderDisabled(String provider) {
        // TODO Auto-generated method stub
       
    }

   
    public void onProviderEnabled(String provider) {
        // TODO Auto-generated method stub
       
    }

   
    public void onStatusChanged(String provider, int status, Bundle extras) {
        // TODO Auto-generated method stub
       
    }

    }

AndroidManifest.xml

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

<uses-library android:name="com.google.android.maps" />