Android Open Source - android-sdk-samples P E_ Torch On Off

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License

The source code is released under:

Apache License

Java Source Code

package com.atooma.plugin.snapback;
/* w  w w  .j  a  v  a2  s  .co m*/
import android.app.Notification;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.graphics.BitmapFactory;
import android.hardware.Camera;
import android.hardware.Camera.Parameters;
import android.os.Handler;
import android.os.RemoteException;
import android.support.v4.app.NotificationCompat;
import android.util.Log;
import android.widget.Toast;

import com.atooma.plugin.ParameterBundle;
import com.atooma.plugin.Performer;
import com.atooma.plugin.blow.R;

public class PE_TorchOnOff extends Performer
{
  private static final String LOG_TAG = PE_TorchOnOff.class.getSimpleName();
  
  private static final String torch_off_intent = "com.atooma.plugin.snapback.PE_TorchOnOff.TORCH_INTENT";
  private static final int notify_id = 1;
  private Camera camera;
  private Parameters cParameters;
  private NotificationManager notificationManager;

  public PE_TorchOnOff(Context context, String id, int version)
  {
    super(context, id, version);
    
    BroadcastReceiver br = new BroadcastReceiver()
      {
      @Override
      public void onReceive(Context arg0, Intent arg1)
      {
        if(arg1.getAction().equalsIgnoreCase(torch_off_intent))
        {
          turnOff();
          releaseCamera();
        }
      }
    };
    IntentFilter filter = new IntentFilter();
    filter.addAction(torch_off_intent);
    
    getContext().registerReceiver(br, filter);
  }

  @Override
  public ParameterBundle onInvoke(String arg0, ParameterBundle arg1) throws RemoteException
  {
    if(camera == null)
    {
      try
      {
        camera = Camera.open();
      }
      catch(RuntimeException e)
      {
        // if camera is already open
        Log.e(LOG_TAG, e.getMessage());
        Log.e(LOG_TAG, "The camera and flashlight are in use by another app");
        
        new Handler(getContext().getMainLooper()).post(new Runnable()
        {
            public void run()
            {
              Toast.makeText(getContext(), "Snapback plugin: The camera and flashlight are in use by another app.", Toast.LENGTH_LONG).show();
            }
        });
        
        return null;
      }
    }
    
      cParameters = camera.getParameters();
      
      if(cParameters.getFlashMode().equalsIgnoreCase(Camera.Parameters.FLASH_MODE_TORCH))
      {
        turnOff();
        releaseCamera();
        
        if(notificationManager != null)
        {
          notificationManager.cancel(notify_id);
        }
      }
      else
      {
        turnOn();
        notification();
      }
    
      
    return null;
  }
  
  private void turnOn()
  {
    if(camera != null)
    {
      cParameters.setFlashMode(Camera.Parameters.FLASH_MODE_TORCH);
      camera.setParameters(cParameters);
    }
  }
  
  private void turnOff()
  {
    if(camera != null)
    {
      cParameters.setFlashMode(Parameters.FLASH_MODE_OFF);
      camera.setParameters(cParameters);
    }
  }
  
  private void releaseCamera()
  {
    if(camera != null)
    {
      camera.release();
      camera = null;
    }
  }
  
  private void notification()
  {
    PendingIntent penIntent = PendingIntent.getBroadcast(getContext(), 0, new Intent(torch_off_intent), PendingIntent.FLAG_CANCEL_CURRENT);
    
    NotificationCompat.Builder mBuilder = new NotificationCompat.Builder(getContext());
    mBuilder.setAutoCancel(true);
    mBuilder.setOngoing(true);
    mBuilder.setDefaults(Notification.DEFAULT_LIGHTS);
    mBuilder.setContentTitle("Torch on");
    mBuilder.setContentText("Tap to turn the torch off");
    mBuilder.setSmallIcon(R.drawable.torch_icon);
    mBuilder.setLargeIcon(BitmapFactory.decodeResource(getContext().getResources(), R.drawable.brand_icon));  
    mBuilder.setContentIntent(penIntent);

    notificationManager = (NotificationManager)getContext().getSystemService(Context.NOTIFICATION_SERVICE);
    notificationManager.notify(notify_id, mBuilder.build());
  }

  @Override
  public void defineUI()
  {
    setIcon(R.drawable.torch_icon);
    setTitle(R.string.pe_torch_name);
  }
}

Java Source Code List

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