Phone Call in Blackberry

The following code will help to call a mobile number programatically.

PhoneArguments callArgs = new PhoneArguments(PhoneArguments.ARG_CALL,"mobile number to make call");
Invoke.invokeApplication(Invoke.APP_TYPE_PHONE, callArgs);


        

Automatically Taking Picture in Blackberry

The following code will automatically take pictures without any user interactions. It also displays the taken picture in the screen.

    private Field _videoField;
    private Player _player;
    private VideoControl _videoControl;
    byte[] image;

 try{
        _player = Manager.createPlayer( "capture://video??encoding=jpeg&width=240&height=240" );
        _player.realize();
        _player.prefetch();
        _videoControl = (VideoControl)_player.getControl("VideoControl");
        _player.start();               
        if (_videoControl != null){

            _videoField = (Field) _videoControl.initDisplayMode (GUIControl.USE_GUI_PRIMITIVE, "net.rim.device.api.ui.Field");
            _videoControl.setDisplayFullScreen(true);
            add(_videoField);
        }
    }
    catch(Exception e)
    {
       //show error
    }
         

         try {
                image = _videoControl.getSnapshot(null);
                 _player.close();
               
                EncodedImage bitmap = EncodedImage.createEncodedImage(image, 0, image.length); 
                BitmapField field1 = new BitmapField();
                field1.setImage(bitmap);
                add(field1);
            } catch (MediaException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }



        

Play Audio From URL in Blackberry

The following code will help you to playing an audio from url.

                       try {
                         String httpURL="http://www.yourwebsite.com/audio.mp3";
                         if ((WLANInfo.getWLANState() == WLANInfo.WLAN_STATE_CONNECTED)
                                    && RadioInfo.areWAFsSupported(RadioInfo.WAF_WLAN)) {
                                httpURL += ";interface=wifi";
                            }
                       
                            Player player;
                            player =Manager.createPlayer(httpURL);
                            player.realize();
                            player.prefetch();
                            player.start();
                           
                        } catch (Exception me) {
                            Dialog.alert(me.toString());
                           
                        }


        

Gauge Field in Blackberry(Like download status bar)

The following code will display a Download status Bar like Gauge field in Blackberry.




GaugeField gField;
 gField = new CustomGaugeField();
add(gField);
startProgressTimer();

private void startProgressTimer() {
       ttask = new TimerTask() {
            public void run() {
                Field f;
                for (int i = 0; i < getFieldCount(); i++) {
                    f = getField(i);
                    if (f instanceof CustomGaugeField) {
                        final CustomGaugeField gField = (CustomGaugeField) f;
                        final int increment = (i + 1) * 2;
                     
                        UiApplication.getUiApplication().invokeLater(
                            new Runnable() {
                                public void run() {
                                     
                                    if(gField.getValue()>=100)
                                    {
                                    ttask.cancel();
                                    //Implement your action here
                                    }
                                    else{
                                    gField.setValue((gField.getValue() + increment) % 101);
                                    }
                                   
                                }
                            }
                        );
                    }
                       
                }

            }
        };

        Timer ttimer = new Timer();
        ttimer.schedule(ttask, 1000, 300);
    }

//custom Gauge Field Class

import net.rim.device.api.ui.Font;
import net.rim.device.api.ui.Graphics;
import net.rim.device.api.ui.component.GaugeField;

class CustomGaugeField extends GaugeField {
    // Default constructor, need improvement
    public CustomGaugeField() {
        super("", 0, 100, 0, GaugeField.PERCENT);
    }

    // Colors
    private static final int BG_COLOR = 0xd6d7d6;
    private static final int BAR_COLOR = 0x63cb52;
    private static final int FONT_COLOR = 0x5a55c6;

    protected void paint(Graphics graphics) {
        int xProgress = (int) ((getWidth() / 100.0) * getValue());
        int xProgressInv = getWidth() - xProgress;

        // draw background
        graphics.setBackgroundColor(BG_COLOR);
        graphics.clear();

        // draw progress bar
        graphics.setColor(BAR_COLOR);
      
        graphics.fillRect(0, 0, xProgress, getHeight());//left to right
        //graphics.fillRect(xProgressInv, 0, xProgress, getHeight());//right to left

        // draw progress indicator text
        String text = getValue() + "%";
        Font font = graphics.getFont();
        int xText = (getWidth() - font.getAdvance(text)) / 2;
        int yText = (getHeight() - font.getHeight()) / 2;
        graphics.setColor(FONT_COLOR);
        graphics.drawText(text, xText, yText);
    }
   
    protected void layout(int width, int height) {
        super.layout(width, height);
        setExtent (width, 15);
        }
}