Android Open Source - Android-Sessions Sensor List Activity

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License

The source code is released under:

MIT License

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Java Source Code

package uk.ac.icappsoc.appsocthree;
/*from w w  w . j  a v  a 2s . c  o m*/
import java.util.List;
import android.annotation.TargetApi;
import android.app.ListActivity;
import android.content.Context;
import android.hardware.Sensor;
import android.hardware.SensorManager;
import android.os.Build;
import android.os.Bundle;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.TextView;
import android.widget.Toast;

/**
 * Displays a list of all the device's available sensors.
 */
public class SensorListActivity extends ListActivity {
  
  private SensorManager sensorManager;
  private List<Sensor> sensors;
  
  @TargetApi(Build.VERSION_CODES.ICE_CREAM_SANDWICH)
  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    
    sensorManager = (SensorManager) getSystemService(Context.SENSOR_SERVICE);
    sensors = sensorManager.getSensorList(Sensor.TYPE_ALL);
    
    setListAdapter(new SensorListAdapter());
    
    Toast.makeText(this, "This device has temperature sensor: " + deviceHasSensor(Sensor.TYPE_AMBIENT_TEMPERATURE), Toast.LENGTH_SHORT).show();
  }
  
  private boolean deviceHasSensor(int type){
    // If the device does not have a 'default' sensor of the given type, then it doesnt' have any of that type!
    return sensorManager.getDefaultSensor(type) != null;
  }
  
  /* Extending BaseAdapter is a good choice when in need of an adapter. */
  private class SensorListAdapter extends BaseAdapter {
    
    @Override
    public int getCount() {
      return sensors.size();
    }

    // No need to return anything special.
    @Override
    public Object getItem(int position) {
      return null;
    }

    // No need to anything special.
    @Override
    public long getItemId(int position) {
      return 0;
    }
    
    // Creates the Views that actually populate the list
    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
      if(null == convertView){
        // Our view has not been recycled, let's create a new one!
        convertView = getLayoutInflater().inflate(R.layout.item_list_sensor_detail, null);
      }
      // Update recycled or old view
      TextView nameLabel = (TextView) convertView.findViewById(R.id.name);
      TextView vendorLabel = (TextView) convertView.findViewById(R.id.manufacturer);
      TextView detailsLabel = (TextView) convertView.findViewById(R.id.details);
      Sensor sensor = sensors.get(position);
      
      nameLabel.setText(sensor.getName());
      vendorLabel.setText("by " + sensor.getVendor() + " | v" + sensor.getVersion());
      detailsLabel.setText(
          "resolution: " + sensor.getResolution() + " | max range: " + sensor.getMaximumRange() + "\n" +
          "min delay: " + sensor.getMinDelay() + "us | power req: " + sensor.getPower() + "mA");
      
      return convertView;
    }
    
  }
}

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