CreateBitmapFromBytes
Hello I'm trying to create a bitmap on the web using CreateBitmapFromBytes inside the Bitmap class.
I create an input stream and use the IOUtilities to convert the inflow into a byte array. After that, I use the byte [] to create the bitmap. For some reason, it of not crashing but also does not work. Any thoughts?
Bitmap bmp= null; //create a connection to access the image on the web StreamConnection imgSC = (StreamConnection)Connector.open(imageURL); //create input stream from the stream connection InputStream imgIS = imgSC.openInputStream(); //convert the input stream to a byte array byte[] imageData = IOUtilities.streamToBytes(imgIS); //create a bitmap from the byte array bmp = Bitmap.createBitmapFromBytes(imageData, 0 , -1, 1); //assign the bitmap to the bitmap field DisplayedBitmap.setBitmap(bmp);
Tried what you said and there is no error, but he did not finish the function. This is the code:
System.out.println("Starting Image Download");
StreamConnection imgSC = (StreamConnection)Connector.open(imageURL);
System.out.println("Connection Established");
InputStream imgIS = imgSC.openInputStream();
System.out.println("Inputstream Open");
byte[] imageData = IOUtilities.streamToBytes(imgIS);
System.out.println("Byte array written: "+ imageData.length);
It is the output:
Starting Image Download Connection Established Starting net_rim_bb_simphonebook Started net_rim_bb_simphonebook(166) EF: 20 SIZE: -1 AG,+CPT AG,-CPT JVM: bklt @4186: timer JVM: bklt[1] @4186: idle 11 JVM: bklt @4186: setTimer 11 SHUTTING DOWN SIM SERVER Exit net_rim_bb_simphonebook(166)
from what I can tell, it cannot open the inputstream. Correct support?
EDIT: I forgot to take into account the deviceside. and wifi. Fixed by adding
Tags: BlackBerry Developers
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I tried to improve my code and I found the solution
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1. sometimes the image is cropped, this size (w/h) is OK, but for some strange reason it is not all the time. There is always a large black area at the bottom of the image. It seems that something has not been correctly readen.
2. sometimes I had an IllegalArgumentException in createBitmapFromBytes() function.
I read a lot of posts that talk about these problems, but I have found no solution.
Is it so hard to take a picture of the camera and display it?
Anyone have a good example/code example on how to handle this?
Thank you for your support and for reading me
(Sorry for my English
)I suspect that these problems are caused by the fact that the earpiece of the paper you use is told on the file being written until the writing is actually completed.
I think that Ihad this problem in an application that I wrote and to get around it, rather than process the image in the JournalListener, I actually got the JournalListener to save the file created in the method of invocation of the "onExposed" screen, I checked to see if the name of the file has been updated and if so , I would treat it then. onExposed is not get leads until the camera application has closed at this time, according to me, that it is save saying that the file has been saved.
I think that there are other options. For example, you could start a thread check the size of the file and if it does not grow after a second or two, you might assume that the writing was completed.
In all cases, this is where I would start looking for the problem.
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public static String dateFormat() { SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMddHHmmss"); return sdf.format(Calendar.getInstance().getTime()); }Here is Snap from sample RIM, which saves the image.
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FILE_NAME + _counter + EXTENSION
with
String fileName = dateFormat + EXTENSION;
that will give the unique name of the image.
I hope this will solve your problem, if not you can always come here
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My method is first call httpdispatcher to get the thumbnail image, title and Teaser and then wait and call another httpdispatcher to retrieve the url of the image thumbnail, then added to listfield.
Here is my code
Class helloScreen{ public void requestSucceeded(byte[] result, String contentType) { if (contentType.equals("image/png") || contentType.equals("image/jpeg") || contentType.equals("image/gif") ||contentType.equals("image/jpg")) { bitmap_temp = Bitmap.createBitmapFromBytes(result, 0, result.length, 1); synchronized (UiApplication.getEventLock()) { } } else if (contentType.startsWith("text/")) { strResult = new String(result); try { ja = new JSONArray(strResult); } catch (JSONException e) { // TODO Auto-generated catch block e.printStackTrace(); } synchronized (UiApplication.getEventLock()) { int temp_int_next=0; try { callback.erase(); for(int x=0;x<10;x++){ j = (JSONObject) ja.get(x); String get_htmlOff_first = j.get("teaser").toString().substring(j.get("teaser").toString().indexOf(">")+1); final String thumb = replace(j.get("thumb").toString(),"files/","http://www.eng.chula.ac.th/files/"); UiApplication.getUiApplication().invokeAndWait(new Runnable() { public void run() { getImageURL(thumb); }}); callback.insert(j.get("title")+" ", ""+get_htmlOff_first.trim(), bitmap_temp , temp_int_next , "Event"); temp_int_next++; } } catch (JSONException e) { // TODO Auto-generated catch block e.printStackTrace(); } } } else { synchronized (UiApplication.getEventLock()) { Dialog.alert("Unknown content type: " + contentType); } }public void getImageURL(String url) { HttpRequestDispatcher dispatcher2 = new HttpRequestDispatcher(url, "GET", this); }}
httpRequest, class Dispatcher is used to get the data from the url
public HttpRequestDispatcher(String url, String method, helloScreen screen) { this.url = url; this.method = method; this.screen = screen; } public String getType(){ return type; } public void run() { try { if(WLANInfo.getWLANState() == WLANInfo.WLAN_STATE_CONNECTED) { connection = (HttpConnection)Connector.open(url+";interface=wifi"); }else{ String uid = getWap2Uid(); connection = (HttpConnection)Connector.open(url+";deviceside=true;ConnectionUID=" + uid); } connection.setRequestMethod(method); connection.setRequestProperty("Accept","text/html, image/jpg, image/jpeg, image/,image/gif"); int responseCode = connection.getResponseCode(); if (responseCode != HttpConnection.HTTP_OK) { screen.requestFailed("Unexpected response code: " + responseCode); connection.close(); return; } final String contentType = connection.getHeaderField("Content-type"); final ByteArrayOutputStream baos = new ByteArrayOutputStream(); InputStream responseData = connection.openInputStream(); byte[] buffer = new byte[10000]; int bytesRead = responseData.read(buffer); while(bytesRead > 0) { baos.write(buffer, 0, bytesRead); bytesRead = responseData.read(buffer); } baos.close(); connection.close(); UiApplication.getUiApplication().invokeAndWait(new Runnable() { public void run() { screen.requestSucceeded(baos.toByteArray(), contentType); } }); } catch (IOException ex) { screen.requestFailed(ex.toString()); } }The point here is that I have JSON and get the url of the thumbnail to fetch before add to listfield. The image should be ready in bitmap_temp but it still get null.
UiApplication.getUiApplication().invokeAndWait(new Runnable() { public void run() { getImageURL(thumb); }});public void getImageURL(String url) { HttpRequestDispatcher dispatcher2 = new HttpRequestDispatcher(url, "GET", this); }callback.insert(j.get("title")+" ", ""+get_htmlOff_first.trim(), bitmap_temp , temp_int_next , "Event");All day trying to fix it but no success, so I need help from you guys.
Thank you
"Is it possible to leave only 1 thread completely pick 10 pictures.
Yes and this is how I would recommend that do you it this way. So have a Thread that you give a list of things to do and let it work through each.
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Hello.. I try to extract the photo of a particular contact. I can see the built application in which this image is there but not able to fetch it. His donations illegal Argument Exception. I don't get what the problem... Here's the code... Please suggest where I m wrong?
public static byte[] getPic(Contact contact) // This is the function for fetching byte data in the Picture class { byte[] pic = null; if(contact == null) { return null; } if((contact.countValues(Contact.PHOTO) > 0)) { pic = new byte[(int)(contact.getBinary(Contact.PHOTO,0).length)]; pic = contact.getBinary(Contact.PHOTO, 0); } return pic; } if(Picture.getPic(item)!=null) // item is the contact { EncodedImage image = EncodedImage.createEncodedImage(Picture.getPic(item), 0, Login.getPic(item).length); }The createEncodedImage function does not work. I tried createBitmapFromBytes also. But who does not work too.
Please suggest a solution.
Thanx
Drom the API documentation:
"Note that the javadocs for addBinary(), setBinary(), getBinary() , and all say that binary data must be coded"into a string of 'B' binary code as defined by [IETF RFC 2047]". This means that the photo data returned by getBinary() will be coded in Base64. Also, the data can be specified to setBinary() and addBinary() in two bytes raw or encoded in base 64; If the raw bytes are specified then they are converted to Base64. To encode or decode Base64 data you can use Base64OutputStream or Base64InputStream, respectively. »
In others, you will need to cancel first Base64 encoding.
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Resize the SD card image to fit screen
Hello
I've already learned how to read a bitmap file from the SD card with the following code:
public Bitmap getBitmapFromFile(String file){ Bitmap b = null; try{ FileConnection oInputFileConnection = (FileConnection)Connector.open(file, Connector.READ); InputStream oInputStream = null; if(oInputFileConnection.exists()) oInputStream = oInputFileConnection.openInputStream(); byte[] arrData = new byte[(int)oInputFileConnection.fileSize()]; int nCode = oInputStream.read(arrData, 0, arrData.length); oInputStream.close(); oInputFileConnection.close(); b = Bitmap.createBitmapFromBytes(arrData, 0, -1, 1); }catch(Exception e){ } return b; }Now I want to format this bitmap to the size 480x360px. How can I do?
I know what I can change with this
b = Bitmap.createBitmapFromBytes(arrData, 0, -1, 1);
but it is not so accurate.
Can someone help me?
just tried it out.
public class Utils { public static Bitmap resizeBitmap(Bitmap image, int width, int height) { //Need an array (for RGB, with the size of original image) // int rgb[] = new int[image.getWidth()*image.getHeight()]; //Get the RGB array of image into "rgb" // image.getARGB(rgb, 0, image.getWidth(), 0, 0, image.getWidth(), image.getHeight()); //Call to our function and obtain RGB2 // int rgb2[] = rescaleArray(rgb, image.getWidth(), image.getHeight(), width, height); //Create an image with that RGB array // Bitmap temp2 = new Bitmap(width, height); temp2.setARGB(rgb2, 0, width, 0, 0, width, height); return temp2; } private static int[] rescaleArray(int[] ini, int x, int y, int x2, int y2) { int out[] = new int[x2*y2]; for (int yy = 0; yy < y2; yy++) { int dy = yy * y / y2; for (int xx = 0; xx < x2; xx++) { int dx = xx * x / x2; out[(x2 * yy) + xx] = ini[(x * dy) + dx]; } } return out; } } -
How to get the external Bitmap of URL object
Hi all!
I'm a developer starting with components of BlackBerry, I try to get a Bitmap of the outer object
URL, but my getImage method does not work correctly. I think that the problem lies in the getImage method. just at the moment where I try to
create form of Bitmap bytes. Note: J2me with the Image object, that it works!could someone help me please?
Sorry for my bad English & thank you for helping me!
Code:
SerializableAttribute public class MainForm extends form {}
private String url = "http://user-xxxx/json.js";
private String [] imageURLs = new String [5];public MainForm() {}
try {}
getJSON (url);
} catch (IOException e) {}
e.printStackTrace ();
}try {}
Add (GetImage(this.imageURLs[0]));
} catch (Exception e) {}
e.printStackTrace ();
}
}Public Sub getJSON (String url) throws IOException {}
StringBuffer sb = new StringBuffer();
InputStream is = null;
HttpConnection hc = null;
try {}
long bytesLength = 0;
int ch = 0;
HC = (HttpConnection), Connector.open (url);
is = hc.openInputStream ();
bytesLength = hc.getLength ();
If (bytesLength! = - 1) {}
for (int i = 0; i)< byteslength;="" i++)="">
If ((ch = is.read (())! = - 1) {}
SB. Append ((Char) ch);
}
}
} else {}
While ((ch = is.read (())! = - 1) {}
bytesLength = is.available ();
SB. Append ((Char) ch);
}
}
parseJSON (sb.toString ());
} {Finally
is. Close();
HC. Close();
}
}{} public void parseJSON (String sb)
try {}
JSONObject jo = new JSONObject (sb);
If (jo! = null) {}
JSONObject channel = jo.getJSONObject ("channel");
If (channel! = null) {}
JSONArray points = channel.getJSONArray("item");
If (items! = null) {}
for (int i = 0; i)< items.length();="" i++)="">
JSONObject point = items.getJSONObject (i);
this.imageURLs [i] = item.getString ("image");
}
}
}
}
} catch (Exception e) {}
e.printStackTrace ();
}
}I think that the problem lies in this method.
public BitmapField getImage (String url) throws Exception {}
InputStream inputStream = Connector.openInputStream (url) (InputStream);
Bitmap image = null;
BitmapField bf = null;
try {}
ByteArrayOutputStream Baos = new ByteArrayOutputStream();
int ch;
While ((ch = inputStream.read ())! = - 1) {}
Baos.Write (ch);
}
Byte [] imageData = baos.toByteArray ();
Image = Bitmap.createBitmapFromBytes (imageData, 0, imageData.length, 1);
BF = new BitmapField (image);
} {Finally
If (inputStream! = null)
inputStream.close ();
}
return (bf == null? null: bf);
}public String [] getImageURLs() {}
Return this.imageURLs;
}}
Finally my fatal mistake was in archive JSON, I change the URL of the images of http://localhost/image.jpg to
http://user-xxx/image.jpg (MDS - CS available in http://localhost URL: 8080 /), and now it works!Ted and arkadyz, your suggestions have been very helpful for me, thank you very much!
Final code:
Class MainMIDlet
Import net.rim.device.api.ui.UiApplication;
SerializableAttribute public class MainMIDlet extends UiApplication {}
public MainMIDlet() {}
MainForm mf = new MainForm();
pushScreen (mf);
}Public Shared Sub main (String [] args) {}
MainMIDlet mm = new MainMIDlet();
mm.enterEventDispatcher ();
}
}Class MainForm
import java.io.ByteArrayOutputStream.
import java.io.IOException;
import java.io.InputStream;Import javax.microedition.io.Connector;
Import javax.microedition.io.HttpConnection;Import org.json.me.JSONArray;
Import org.json.me.JSONObject;Import net.rim.device.api.system.EncodedImage;
Import net.rim.device.api.ui.component.BitmapField;
Import net.rim.device.api.ui.component.LabelField;
Import net.rim.device.api.ui.container.MainScreen;SerializableAttribute public class MainForm extends form {}
private String url = "http://user-xxx/json.js";
private String [] jsonTitles = new String [5];
private String [] jsonImages = new String [5];
private LabelField lf = null;
private BitmapField bf = null;public MainForm() {}
try {}
getJSON (url);
} catch (IOException e) {}
e.printStackTrace ();
}LF = getLabelField(this.jsonTitles[0]);
Add (LF);try {}
BF = getBitmapField(this.jsonImages[0]);
} catch (Exception e) {}
e.printStackTrace ();
}
Add (BF);}
Public Sub getJSON (String url) throws IOException {}
StringBuffer sb = new StringBuffer();
InputStream is = null;
HttpConnection hc = null;
try {}
long bytesLength = 0;
int ch = 0;
HC = (HttpConnection), Connector.open (url);
is = hc.openInputStream ();
bytesLength = hc.getLength ();
If (bytesLength! = - 1) {}
for (int i = 0; i)< byteslength;="" i++)="">
If ((ch = is.read (())! = - 1) {}
SB. Append ((Char) ch);
}
}
} else {}
While ((ch = is.read (())! = - 1) {}
bytesLength = is.available ();
SB. Append ((Char) ch);
}
}
parseJSON (sb.toString ());
} {Finally
is. Close();
HC. Close();
}
}{} public void parseJSON (String sb)
try {}
JSONObject jo = new JSONObject (sb);
If (jo! = null) {}
JSONObject channel = jo.getJSONObject ("channel");
If (channel! = null) {}
JSONArray points = channel.getJSONArray("item");
If (items! = null) {}
for (int i = 0; i)< items.length();="" i++)="">
JSONObject point = items.getJSONObject (i);
this.jsonTitles [i] = item.getString ("title");
this.jsonImages [i] = item.getString ("image");
}
}
}
}
} catch (Exception e) {}
e.printStackTrace ();
}
}public getLabelField (String title) {} LabelField
LabelField lf = new LabelField (title);
return of lf;
}public BitmapField getBitmapField (String url) throws IOException {}
InputStream is = Connector.openInputStream (url) (InputStream);
BitmapField bf = null;
try {}
ByteArrayOutputStream Baos = new ByteArrayOutputStream();
int ch;
While ((ch = is.read (())! = - 1) {}
Baos.Write (ch);
}
imageData Byte = baos.toByteArray ();
BF = new BitmapField (EncodedImage.createEncodedImage (imageData, 0,))
(imageData.length) .getBitmap ());
} {Finally
If (is! = null) {}
is. Close();
}
}
return (bf == null? null: bf);
}}
-
InputStream.read in Curve 9300 does not completely read
Hello!
I am extracting data (an image) from a server, using HTTP and InputStream.
In the Simulator, images are retrieved ok = 100,000 bytes
Run the application in a BB 9300, recovers only 1129 bytes
Can you advise how I can get the complete picture
Here's the code for that
HttpConnection httpConnection
Try
httpConnection = Connector.open (url) (HttpConnection)
httpConnection.setRequestMethod (HttpConnection.POST)
httpConnection.setRequestPropertyContent - type, application/x-www-formulaires-urlencode)
httpConnection.setRequestPropertyUser - Agen, userAgent)
httpConnection.setRequestPropertyContent - Languag, en - U)
httpConnection.setRequestPropertyConnectio, closed)
httpConnection.setRequestPropertyContent - Lengt, Integer.toString (postData.length ()))
OutputStream oStrm = httpConnection.openOutputStream)
oStrm.write (postData.getBytes ())
oStrm.flush)
oStrm.close)
InputStream receive = httpConnection.openInputStream)
data from Byte [] = new ubyte [150000]
int dataLen = receive.read (data)
Bitmap tmp = Bitmap.createBitmapFromBytes (data, 0, dataLen, 1);...
dataLen is over 100,000 in Simulator and 1129 in the camera.
In this code, createBitmapFromBytes throws an exception.
I had a teacher who said: "something is difficult if you spend a lot of time to discover that it was easy." And this is the case!
Port 85 is blocked by default in BlackBerry Internet Service.
So I configured Apache to listen to the two ports 8080 and 85, change the port to the BB app on 8080 and works!
Thank you very much!
-
Hello
I have an image (png), which has the same width as the display width. When viewing on the storm, the image fills the entire width of the screen, while on the curve8900, the image is reduced approximately 70% of its original width. So there's a very inexplicable.
I tried the following:
add(new BitmapField(Bitmap.createBitmapFromBytes(bytes, 0, bytes.length, 1)) ); add(new BitmapField(Bitmap.createBitmapFromPNG(bytes, 0, bytes.length)) ); add(EncodedImage.createEncodedImage(bytes, 0, bytes.length).getBitmap() );
Any ideas?
Thank you.
Curve and the storm have both the physical width even, but the other resolutions. RexDoug thanks for your tip
-
loading images from an Sd Card
Hello
In my application I want pictures of the specified Sd folder.if map folder contain more than 10 images. It will take a long time to load all the images to display. For the loading of images from the SD card I worte code below.
FileConnection con = null;
try {}
con = (FileConnection) Connector.open (path,
Connector.READ_WRITE);
con.setReadable (true);
InputStream stream = con.openInputStream ();
int ch;
While ((ch = stream.read ())! = - 1) {}
bytes. Append ((Char) ch);
}
} catch (Exception e) {}Byte [] imageBytes = new byte [bytes.length ()];
imageBytes = bytes.toString () .getBytes ();Image bitmap = Bitmap.createBitmapFromBytes (imageBytes, 0,)
(imageBytes.length, 6);to load all the images, it will take a long time to load. Y at - it no alternative to load all of the images on the wait.
Have you tried to use other methods of reading...
-
Another problem in the BLOB view
Hi all
I have a problem in the image display on the screen. Here's my situation: I have an Oracle table, consists of string, CLOB and BLOB. I also have a web application using JSP and Servlet. My Blackberry application will access the servlet to get the data in my table. Returns an XML file, not a file JSP, servlet, then my Blackberry application will read this file, it displays on the screen. I use not BrowserField.
My problem is... How can I display the image?
I have tried to convert byteArray BLOB, and then again to convert to a string, inserting it into my XML. In my Blackberry app, get the string and convert it to byteArray and then use
Bitmap.createBitmapFromBytes to get the Bitmap image. But it gives me nothing.
Can someone help me?
Thank you much in advance.
Kind regards
Novan Ananda
I offer two General options:
1 generate and send an image url to the XML format. Request per second to get the bytes of the images to the server. Server can presave the image in a temp folder or get the blob of the DB directly.
2 send the image data as xml encoded in base64. Decode the device and view EncodedImage.
I prefer the method if you send pictures not only in response. Can see the context for your asynchronous image download information.
Thank you
Eugen
-
How to save a bitmap on the device?
Hello
I have a bitmap image, which I have created a few bytes I get from server. Now, I want to save this file on my device. How can I achieve this?
Thanks in advance
That's how I saved my image on the device
FileConnection fconn = (FileConnection)Connector.open("file:///store/home/user/screenCapture/image01.bmp",Connector.READ_WRITE);
if(!fconn.) Exists())
fconn. Create();
OutputStream out = fconn.openOutputStream ();
Bitmap image = Bitmap.createBitmapFromBytes(tempJpegBuffer,0,tempJpegBuffer.length,1);
if(image == null)
System.out.println ("null image");
else {}
out. Write (ReceiveThread.tempJpegBuffer);
out. Close();
}
fconn. Close();
} catch (Exception e) {}
System.out.println ("Exception:" + try ());
e.getMessage ();
}
and display the image recorded as by peter has mentioned above
:-)
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