title: How can I get "BATTERY_PROPERTY_CURRENT_NOW" to work?
body: <p>I am trying to make an app where it will show battery status and battery information for one of my projects. I want to show the instantaneous current and source of power in the app but I have been unsuccessful to get it working, I dont get the current info and source info, it just stays at 2 and AC power plugged. I would appreciate if you can help me with the code. Thanks</p>
  
  <pre><code>import android.annotation.SuppressLint;
  
  //import com.batterystatus.namespace.R;
  
  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.support.v7.app.ActionBarActivity;
  import android.view.Menu;
  import android.view.MenuItem;
  import android.view.View;
  import android.widget.Button;
  import android.widget.TextView;
  
  public class MainActivity extends ActionBarActivity {
  private TextView level,voltage, status1,temp,health1,tech,sour,amp;
  
      @Override
      protected void onCreate(Bundle savedInstanceState) {
          super.onCreate(savedInstanceState);
          setContentView(R.layout.main);
          level=(TextView)findViewById(R.id.level);
          voltage=(TextView)findViewById(R.id.volt);
          status1=(TextView)findViewById(R.id.stat);
          temp=(TextView)findViewById(R.id.temp);
          health1=(TextView)findViewById(R.id.healt);
          tech=(TextView)findViewById(R.id.tech);
          sour=(TextView)findViewById(R.id.source);
          Button b = (Button) findViewById(R.id.ex);
          amp=(TextView)findViewById(R.id.current);
          b.setOnClickListener(new View.OnClickListener(){
               public void onClick(View v) {
                      // TODO Auto-generated method stub
                      finish();
                      System.exit(0);}
          });
  
  
  
          this.registerReceiver(this.myBatteryReceiver,
                   new IntentFilter(Intent.ACTION_BATTERY_CHANGED));
  
  
      }
  
      private BroadcastReceiver myBatteryReceiver
         = new BroadcastReceiver(){
  
       @SuppressLint("InlinedApi")
      @Override
       public void onReceive(Context arg0, Intent arg1) {
        // TODO Auto-generated method stub
  
        if (arg1.getAction().equals(Intent.ACTION_BATTERY_CHANGED)){
  
            int lv = arg1.getIntExtra("level", 0);
         level.setText("Level: "
           + String.valueOf(lv) + "%");
  
         voltage.setText("Voltage: "
                   + String.valueOf((float)arg1.getIntExtra("voltage", 0)/1000) + "V");
                 temp.setText("Temperature: "
                   + String.valueOf((float)arg1.getIntExtra("temperature", 0)/10) + "c");
                 tech.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";
                 }
                 status1.setText("Status: " + strStatus);
  
                 int source=arg1.getIntExtra("source", BatteryManager.BATTERY_STATUS_UNKNOWN);
                 **int current=arg1.getIntExtra("current", BatteryManager.BATTERY_PROPERTY_CURRENT_NOW);
                 amp.setText("Current: "+String.valueOf(current));
                 String strsource = null;
  
              if(source==BatteryManager.BATTERY_PLUGGED_AC){strsource="AC Power Plugged";}
                else if (source==BatteryManager.BATTERY_PLUGGED_USB){strsource="USB Plugged";}
                sour.setText("Power Source: "+ strsource);**
                 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";
                 }
                 health1.setText("Health: " + strHealth);
  
                }
               }
  
                 };
      @Override
      public boolean onCreateOptionsMenu(Menu menu) {
          // Inflate the menu; this adds items to the action bar if it is present.
  
          getMenuInflater().inflate(R.menu.main, menu);
          return true;
      }
  
      @Override
      public boolean onOptionsItemSelected(MenuItem item) {
          // Handle action bar item clicks here. The action bar will
          // automatically handle clicks on the Home/Up button, so long
          // as you specify a parent activity in AndroidManifest.xml.
          int id = item.getItemId();
          if (id == R.id.action_settings) {
              return true;
          }
          return super.onOptionsItemSelected(item);
      }
  }
  </code></pre>