Get all the images of devices, but how do I know in what images is seclected

Hello

in my application I want to show all the images in the first screen, after selecting any image in all we will see in the next screen (full screen) actually I get all images but problem how do I know what image is clicked

I used this code...

package mypackage;

import java.io.IOException;
import java.io.InputStream;
to import java.util.Enumeration;
import java.util.Vector;

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

Import net.rim.device.api.math.Fixed32;
Import net.rim.device.api.system.Bitmap;
Import net.rim.device.api.system.EncodedImage;
Import net.rim.device.api.ui.Field;
Import net.rim.device.api.ui.Manager;
Import net.rim.device.api.ui.component.BitmapField;
Import net.rim.device.api.ui.component.ButtonField;
Import net.rim.device.api.ui.container.FlowFieldManager;
Import net.rim.device.api.ui.container.MainScreen;
Import net.rim.device.api.util.Comparator;
Import net.rim.device.api.util.SimpleSortingVector;

/**
* A class that extends the class screen, which offers default standard
* behavior for BlackBerry GUI applications.
*/
/ public final class screen extends MyScreen
{

private static final String DEVICE_DIR_PATH = System
.getProperty ("fileconn.dir.photos");
private static final String SD_IMAGE_DIR_PATH = System
.getProperty ("fileconn.dir.memorycard.photos");
private static final String OS6_CAMERA_PATH = "file:///store/home/user/camera/";
private static final String OS6_SD_CARD_PATH = "file:///SDCard/BlackBerry/camera/";

public static final int DEVICE_AND_SD = 0;
public static final int DEVICE_MEM = 1;
public static final int SD_CARD = 2;
public static final int OS6_CAMERA = 3;
public static final int OS6_SD_CAMERA = 4;
public static final int DEVICE_ALL = 5;
private static String [] _allImagePaths = null;
private EncodedImage [encodedbitmap];
Private bitmap image in Bitmap [];
private BitmapField [imagebitmapField];

int dataSize;
private ButtonField [] bitmapf;

/**
* Creates a new object of MyScreen
*/
public MyScreen()
{
Set the displayed title of the screen
setTitle ("MyTitle");

String [] imagePaths = getImagePaths (DEVICE_ALL);
FlowFieldManager imageFlowField = FlowFieldManager(Manager.VERTICAL_SCROLL | nouveau Manager.VERTICAL_SCROLLBAR);
If (imagePaths! = null & imagePaths.length > 0) {}
encodedbitmap = new EncodedImage [imagePaths.length];
image bitmap = new Bitmap [imagePaths.length];
imagebitmapField = new BitmapField [imagePaths.length];

for (int i = 0; i)< imagepaths.length;="" i++)="">
encodedbitmap [i] = loadEncodedImage ([i] imagePaths);
[i] bitmap image is scaleImage (encodedbitmap [i], 200, 100);.
imagebitmapField [i] = new BitmapField(bitmap[i],Field.FOCUSABLE);
imageFlowField.add (imagebitmapField [i]);
}
}
Add (imageFlowField);

}

public Bitmap image scaleImage (EncodedImage img, int width, int height) {}

int currentWidthF32 = Fixed32.toFP (img.getWidth ());
int currentHeightF32 = Fixed32.toFP (img.getHeight ());

If (height == 0) {}
int requiredWidth = Fixed32.toFP (width);
int x = Fixed32.div (currentHeightF32, currentWidthF32);
int y = Fixed32.mul (x, requiredWidth);
int scaleX = Fixed32.div (currentWidthF32, requiredWidth);
int scaleY = Fixed32.div (currentHeightF32, y);
IMG = img.scaleImage32 (scaleX, scaleY);
} else {}
int currentWidthFixed32 = Fixed32.toFP (img.getWidth ());
int currentHeightFixed32 = Fixed32.toFP (img.getHeight ());
int requiredHeightFixed32 = Fixed32.toFP (height);
int requiredWidthFixed32 = Fixed32.toFP (width);
int scaleXFixed32 = Fixed32.div (currentWidthFixed32,
requiredWidthFixed32);
int scaleYFixed32 = Fixed32.div (currentHeightFixed32,
requiredHeightFixed32);
IMG = img.scaleImage32 (scaleXFixed32, scaleYFixed32);

}
Return img.getBitmap ();
}

protected EncodedImage loadEncodedImage (String filePath) {}

FileConnection connection = null;
Byte [] byteArray = null;
Image EncodedImage = null;
Bitmap bitmap image = null;
Try
{
Connection = (FileConnection) Connector.Open (FilePath);
If (Connection.Exists ())
{
byteArray = byte [(int) connection.fileSize (new)];
InputStream inputStream = connection.openInputStream ();
inputStream.read (byteArray);
inputStream.close ();
image = EncodedImage.createEncodedImage (byteArray, 0, -1);
}
Connection.Close;
}
catch (System.Exception e)
{
System.out.println ("Exception" + try ());
}
return image;

}

public static String [] getImagePaths (int source) {}

If get path for all do this recursively
If (source == DEVICE_ALL) {}
If (_allImagePaths! = null) {}
Return _allImagePaths;
}

OS6 device Gallery
String [] os6CameraSDPaths =
getImagePaths (OS6_SD_CAMERA);

OS6 Gallery of SD card
String [] os6CameraPaths =
getImagePaths (OS6_CAMERA);

SD card Gallery
String [] sdCardPaths = getImagePaths (SD_CARD);
Gallery of the device
String [] devicePaths =
getImagePaths (DEVICE_MEM);

Combine the two in an ImageViewer
int numOS6CameraSDPaths = os6CameraSDPaths! = null? os6CameraSDPaths.length
: 0 ;
int numOS6CameraPaths = os6CameraPaths! = null? os6CameraPaths.length
: 0 ;
int numSDCardPaths = sdCardPaths! = null? sdCardPaths.length: 0;
int numDevicePaths = devicePaths! = null? devicePaths.length: 0;

int totalNumPaths = numDevicePaths + numSDCardPaths
+ numOS6CameraPaths + numOS6CameraSDPaths;
If (totalNumPaths > 0) {}
String of paths [] = new String [totalNumPaths];

If (os6CameraSDPaths! = null) {}
System.arraycopy (os6CameraSDPaths, 0, 0, paths)
numOS6CameraSDPaths);
}
If (os6CameraPaths! = null) {}
System.arraycopy (os6CameraPaths, 0, paths,)
(numOS6CameraSDPaths, numOS6CameraPaths);
}
If (sdCardPaths! = null) {}
System.arraycopy (sdCardPaths, 0, numOS6CameraSDPaths)
+ numOS6CameraPaths, numSDCardPaths);
}
If (devicePaths! = null) {}
System.arraycopy (devicePaths, 0, paths, numOS6CameraSDPaths)
+ numOS6CameraPaths, + numSDCardPaths,
numDevicePaths);
}

_allImagePaths = sortPaths (paths);

Return _allImagePaths;
} else {}
Returns a null value.
}
}

Set the path to look for
String imagePath = DEVICE_DIR_PATH;
If (source == SD_CARD) {}
imagePath = SD_IMAGE_DIR_PATH;
}

If (source == OS6_CAMERA) {}
imagePath = OS6_CAMERA_PATH;
}

If (source == OS6_SD_CAMERA) {}
imagePath = OS6_SD_CARD_PATH;
}

Listed in the directory looking for image files
ImagePaths vector = new Vector();
FileConnection imageDir = null;
try {}
imageDir = Connector.open (imagePath) (FileConnection);
If (imageDir! = null) {}
Enumeration = imageDir.list ();

imageDir.close ();
While (enumeration.hasMoreElements ()) {}
String imageName = (String) enumeration.nextElement ();
If (isSupported (imageName)) {}
imagePaths.addElement (imagePath + imageName);
}
}
}
} catch (Exception e) {}
XLogger.error (ImagePath.class, "cannot read file:")
+ e.getMessage ());
} {Finally
If (imageDir! = null) {}
try {}
imageDir.close ();
} catch (IOException e) {}
XLogger.error (ImagePath.class, "cannot close the file:")
+ e.getMessage ());
}
}
}

If there is no images don't return the null value
If (imagePaths.size)<= 0)="">
Returns a null value.
}

Return the results in an array of strings
_allImagePaths = new String [imagePaths.size ()];
imagePaths.copyInto (_allImagePaths);
Return _allImagePaths;
}

private static String [] sortPaths (String [] paths) {}
Sort the paths of the time, where modified files.
Class PathAndLastModified {}

timeStamp long private;
private String path;

{} public void setTimeStamp (long timeStamp)
this.timeStamp = timeStamp;
}

{} public void setPath (String path)
This.Path = path;
}

public String GetExtension() {}
Returns the path;
}
}

Comparator to sort paths
Comparator pathComparator = new Comparator() {}
public int compare (Object o1, Object o2) {}
If (((PathAndLastModified) o1) .timeStamp)< ((pathandlastmodified)o2).timestamp="" )="">
Return 1;
} ElseIf (((PathAndLastModified) o1) .timeStamp > .timeStamp (o2 (PathAndLastModified))) {}
Returns - 1;
} else {}
return 0;
}

Return (int) (((PathAndLastModified) o2) .timeStamp - .timeStamp (o1 (PathAndLastModified)));
}
};

Add the paths to the vector sorting
SimpleSortingVector sortedPaths = new SimpleSortingVector();
sortedPaths.setSortComparator (pathComparator);
for (int i = 0; i)< paths.length;="" i++)="">
String filePath = path [i];
long lastModified = 0;

FileConnection baseConn = null;
try {}
baseConn = (FileConnection), Connector.open (paths [i]);
lastModified = baseConn.lastModified ();

PathAndLastModified pathAndLastModified = new PathAndLastModified();
pathAndLastModified.setPath (filePath);
pathAndLastModified.setTimeStamp (lastModified);

sortedPaths.addElement (pathAndLastModified);
} catch (Exception e) {}
Do nothing
} {Finally
{if(baseConn!=null)}
try {}
baseConn.close ();
} catch (IOException e) {}
Do nothing
}
}
}
}
sortedPaths.reSort ();

Browse to create an array of sorted paths
String [] sortedArray = new String [sortedPaths.size ()];
for (int i = 0; i)
sortedArray [i] = ((PathAndLastModified) sortedPaths.elementAt (i)) .getPath ();
}

Return sortedArray;
}

private static Boolean isSupported (image String) {}
Make sure that the image is of the correct type
If (image == null) {}
Returns false;
}
check the directory
If (image.indexOf("/") > = 0) {}
Returns false;
}

int delimiterIndex = image.indexOf(".");
If (delimiterIndex ==-1) {}
probably a directory
Returns false;
}

the text is a list of extensions supported
String [] extensions = {".jpg", ".jpeg"};
for (int i = 0; i)< extensions.length;="" i++)="">
If (image.length () > extensions [i] .length ()) {}
Dim ext = image.substring (image.length)
(-extensions [i] .length ());
If (ext.equalsIgnoreCase (extensions [i])) {}
Returns true;
}
}
}
Returns false;
}
}

my suggestion was supposed to replace navigationclick on-screen.
If you want to ignore it for the field that you do not have to use getLeafFieldWithFocus.

I suggest that you think your code, don't write things and try to operate, fist think about something and then implement.
our projects at the University were generally 80% design, 20% of coding - it was strange at first, but it produced a lot more code.

Tags: BlackBerry Developers

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Get all the images of devices, but how do I know in what images is seclected

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