Picture Browser

This component lets user browse for pictures in his phone and select one

package mypackage;

import java.io.IOException;
import java.io.InputStream;

import javax.microedition.io.Connector;
import javax.microedition.io.file.FileConnection;

import net.rim.device.api.system.Bitmap;
import net.rim.device.api.system.DeviceInfo;
import net.rim.device.api.system.EncodedImage;
import net.rim.device.api.ui.Color;
import net.rim.device.api.ui.Graphics;
import net.rim.device.api.ui.XYEdges;
import net.rim.device.api.ui.component.BitmapField;
import net.rim.device.api.ui.component.ButtonField;
import net.rim.device.api.ui.container.MainScreen;
import net.rim.device.api.ui.decor.Border;
import net.rim.device.api.ui.decor.BorderFactory;
import net.rim.device.api.ui.picker.FilePicker;

public class MyBrowseScreen extends MainScreen implements FilePicker.Listener{

 ButtonField browsePictures;
 private FilePicker _filePicker;
 BitmapField profilePictureField;
 Graphics graphics;
 Bitmap noImageBitmap = Bitmap.getBitmapResource("btn_discover.png");// any default bitmap to be displayed
 
 public MyBrowseScreen(){
  
  
  
  _filePicker = FilePicker.getInstance();
  _filePicker.setListener(this);
 
  profilePictureField = new BitmapField(noImageBitmap);
  profilePictureField.setBorder(BorderFactory.createRoundedBorder(
    new XYEdges(3, 3, 3, 3),
    Color.BLACK,100,
    Border.STYLE_FILLED));
  add(profilePictureField);
  
  browsePictures = new ButtonField("Browse",100){
   protected boolean navigationClick(int status, int time) {
    
    _filePicker.setTitle("Choose a picture");
    _filePicker.setView(FilePicker.VIEW_PICTURES);
    _filePicker.show();
    
    return super.navigationClick(status, time);
   }
  };
  
  add(browsePictures);
  
 }
 
 
 

 public void selectionDone(String selected) {
  

  if (selected != null && selected.length() > 0) {
   FileConnection fc;
   try {

    fc = (FileConnection) Connector.open(selected);
    InputStream is = fc.openDataInputStream();
    byte[] data_bytes = new byte[(int) fc.fileSize()];
    is.read(data_bytes);
    EncodedImage en_image = EncodedImage.createEncodedImage(data_bytes, 0, -1);
    Bitmap picture = en_image.getBitmap();
    
    // resize bitmap to bitmap field size
    picture = getResizedBitmap(noImageBitmap.getHeight(), noImageBitmap.getWidth(), en_image.getBitmap());

    is.close();
    fc.close();
    
    // in torch devices the image from camera gallery comes inverted so we need to rotate it
    if(selected.indexOf("camera")!=-1 && Integer.parseInt(DeviceInfo.getDeviceName().substring(0, 4)) == 9800){
     
     try {
      picture = rotateImage(picture, 90);
     } catch (Exception e) {
      // TODO Auto-generated catch block
      e.printStackTrace();
     }
    }
    
    profilePictureField.setBitmap(picture);
    

    invalidate();
   } catch (IOException e) {
    // TODO Auto-generated catch block
    e.printStackTrace();
   }

  }

 }
 
 public void setBitmap(Bitmap profilePic){
 
  profilePic = getResizedBitmap(noImageBitmap.getHeight(),noImageBitmap.getWidth(),profilePic);
  profilePictureField.setBitmap(profilePic);
 }
 
 public static Bitmap getResizedBitmap(int resizeHeight, int resizeWidth,
   Bitmap bitmap) {

  Bitmap scaleBitmap = new Bitmap(resizeWidth, resizeHeight);
  bitmap.scaleInto(scaleBitmap, Bitmap.FILTER_BILINEAR);
  return scaleBitmap;

 }
 
  public static Bitmap rotateImage(Bitmap image, int angle) throws Exception
     {
      if(angle == 0)
      {
       return image; 
      }
      else if(angle != 180 && angle != 90 && angle != 270)
      {
       throw new Exception("Invalid angle");
      }
      
      int width = image.getWidth();
      int height = image.getHeight();
      
      Bitmap rotated = new Bitmap(width, height);
    
      int[] rowData = new int[width];
      int[] rotatedData = new int[width * height];
      
      int rotatedIndex = 0;
      
      for(int i = 0; i < height; i++)
      {
       image.getARGB(rowData, 0, width, 0, i, width, 1);
       
      
       for(int j = 0; j < width; j++)
       {
        rotatedIndex = 
         angle == 90 ? (height - i - 1) + j * height : 
         (angle == 270 ? i + height * (width - j - 1) : 
          width * height - (i * width + j) - 1
         );
      
        rotatedData[rotatedIndex] = rowData[j];
       }
      }
      
      if(angle == 90 || angle == 270)
      {
       rotated.setARGB(rotatedData, 0, width, 0, 0, width, height);
       return rotated;
      }
      else
      {
       rotated.setARGB(rotatedData, 0, width, 0, 0, height, width);
       return rotated; 
      }
     }


 
}