I need to align a CheckboxField to the right of a fixed text (on Blackberry) like the "manage connections" dialog.
The code is:
final HorizontalFieldManager hfm = new HorizontalFieldManager(USE_ALL_WIDTH);
hfm.add(new LabelField("Test me please", LabelField.ELLIPSIS | FIELD_LEFT | FIELD_VCENTER | USE_ALL_WIDTH));
cbx = new CheckboxField(null, false, FIELD_RIGHT | CheckboxField.NO_USE_ALL_WIDTH);
hfm.add(cbx);
I tried various combinations of "USE_ALL_WIDTH", "NO_USE_ALL_WIDTH" and similar flags, but I still can't get what I want: text all the way to the left, and check box all the way to the right.
If the label is set to USE_ALL_WIDTH, the checkbox disappears, and if it's not set, the checkbox is displayed near the text (not on the right side of the hfm).
Use following code,this will solve your problem.
HorizontalFieldManager hfm = new HorizontalFieldManager(Field.USE_ALL_HEIGHT);
LabelField lblShow = new LabelField("Test me please ", Field.FIELD_LEFT);
CheckboxField cbShow = new CheckboxField("", false, CheckboxField.FIELD_RIGHT );
VerticalFieldManager vfmLeft = new VerticalFieldManager();
VerticalFieldManager vfmRight = new VerticalFieldManager(Field.USE_ALL_WIDTH);
vfmLeft.add(lblShow);
vfmRight.add(cbShow);
hfm.add(vfmLeft);
hfm.add(vfmRight);
add(hfm);
Use This style bit to align checkbox to right.
private static final long checkBoxStyle = 134217728;
add(new CheckboxField("test " , false, checkBoxStyle | USE_ALL_WIDTH));
Related
I am using HorizontalFieldManager with Field.USE_ALL_WIDTH and Field.FIELD_HCENTER but Field.FIELD_HCENTER is not working below is how I am constructing HorizontalFieldManager
HorizontalFieldManager horizontalContainer = new HorizontalFieldManager(Field.USE_ALL_WIDTH | FIELD_HCENTER);
The
Field class provides the following style bits for alignment:
Horizontal alignment styles
FIELD_LEFT
FIELD_HCENTER
FIELD_RIGHT
Vertical alignment styles
FIELD_TOP
FIELD_VCENTER
FIELD_BOTTOM
The horizontal alignment styles are only recognized when a Field is added to a VerticalFieldManager, and the vertical alignment styles only apply when a Field is added to a HorizontalFieldManager. Fields added to a HorizontalFieldManager are ALWAYS aligned to the left.
Declare in the following format
HorizontalFieldManager horizontalContainer = new HorizontalFieldManager(Field.USE_ALL_WIDTH |DrawStyle.HCENTER);
Try like this in separate class and see the output:
HorizontalFieldManager hr=new HorizontalFieldManager(Field.FIELD_HCENTER);
hr.add(new LabelField("Black",Field.FOCUSABLE));
hr.add(new LabelField("Berry",Field.FOCUSABLE));
add(hr);
Enough;
I want to create a popup screen in BlackBerry like the screen appear on long click (see the picture)
My screen contain 3 items
image description
image description
image description
Can any one help me by an example or link to do this popup?
Use the below code and call the GetPopup wherever you want to show the pop up screen
final class Getpopup extends PopupScreen
{
EditField edf;
AutoTextEditField edf1;
HorizontalFieldManager hfm;
public Getpopup()
{
super( new VerticalFieldManager());
LabelField lf = new LabelField("Contact Info", LabelField.FIELD_HCENTER);
SeparatorField sf = new SeparatorField();
edf1= new AutoTextEditField("Name:","" ,20,EditField.NO_NEWLINE);
edf = new EditField("Number:",ThirdScreen.get3);
edf.setEditable(false);
VerticalFieldManager vfm =new VerticalFieldManager(VerticalFieldManager.FIELD_HCENTER);
hfm=new HorizontalFieldManager(HorizontalFieldManager.FIELD_HCENTER);
ButtonField bf1 = new ButtonField("Save", ButtonField.FIELD_HCENTER);
ButtonField bf2 = new ButtonField("Cancel", ButtonField.FIELD_HCENTER);
hfm.add(bf1);
hfm.add(bf2);
vfm.add(lf);
vfm.add(sf);
vfm.add(edf1);
vfm.add(edf);
vfm.add(hfm);
add(vfm);
}
}
Find the code here to create creating-borderless-transparent-popup screen in blackberry
If your looking for custmizing the Buttons as appeared in image then visit custom-image-buttonfield-in-blackberry
You have to make use of GridFieldManager.java for the layout you have used, Also you can customize your own layout.
Create a PopupDialog class which extends Dialog and then in the constructor, add the Buttons. If you would like your buttons to look like the above image, extend a field or button field and in paint method, draw the button and then the button text below the button. Add this custom button control in the PopupDialog.
I keep getting an IllegalArgumentException and nothing shows on the BlackBerry simulator when I run this code. What could be wrong with it?
public MyScreen()
{
// Set the displayed title of the screen and add the weather icons
setTitle("PixWeather");
cityField = new LabelField("Queensland", Field.FIELD_LEFT);
tempField = new LabelField("17", Field.FIELD_RIGHT);
condField = new LabelField("sunny",Field.FIELD_RIGHT);
weather_icon = Bitmap.getBitmapResource("sun_icon.png");
bitmapField = new BitmapField(weather_icon, Field.FIELD_LEFT);
VerticalFieldManager vfield = new VerticalFieldManager();
HorizontalFieldManager hfield1 = new HorizontalFieldManager();
hfield1.add(cityField);
hfield1.add(tempField);
HorizontalFieldManager hfield2 = new HorizontalFieldManager();
hfield2.add(bitmapField);
hfield2.add(condField);
vfield.add(hfield1);
vfield.add(hfield2);
}
The IllegalArgumentException could be unrelated, but nothing is showing up on your screen because you didn't add anything to your screen.
You need to add the vfield to the screen itself. Add the following line:
add(vfield);
I'm trying to create a Help/About screen for my application, but I've discovered that, well, my code sucks. (I know it could use a little refactoring, but when working with a new framework I get the code working first then immediately go back and refactor to do things "properly").
First, what I'm doing doesn't "feel" like the right way of doing it. I'm not sure about just stuffing a bunch of text fields into the layout - is there a better way of doing so?
Second, the VFM is taking up the bulk of the screen and pushing my 'Close' button off the bottom. What I'm trying to do is keep the title and 'Close' button visible but just scroll the VFM.
How can I solve these problems?
public class HelpScreen extends PopupScreen {
public HelpScreen() {
super(new VerticalFieldManager(), Field.FOCUSABLE);
/* Construct the Close button */
FieldChangeListener listener = new FieldChangeListener() {
public void fieldChanged(Field field, int context) {
ok();
}
};
ButtonField b = new ButtonField("Close", Field.FIELD_HCENTER);
b.setChangeListener(listener);
/* Construct the text box containing the help */
VerticalFieldManager vfm = new VerticalFieldManager(VERTICAL_SCROLL);
TextField f;
vfm.add(f = new TextField(FIELD_LEFT | READONLY));
f.setText("My application does stuff. This part is the description of what it does.");
vfm.add(f = new TextField(FIELD_LEFT | READONLY));
vfm.add(f = new TextField(FIELD_LEFT | READONLY));
f.setText("Commands:");
vfm.add(f = new TextField(FIELD_LEFT | READONLY));
f.setText("N - New Widget");
vfm.add(f = new TextField(FIELD_LEFT | READONLY));
f.setText("R - Rename Widget");
vfm.add(f = new TextField(FIELD_LEFT | READONLY));
f.setText("D - Duplicate Widget");
vfm.add(f = new TextField(FIELD_LEFT | READONLY));
f.setText("C - Clear Widget");
vfm.add(f = new TextField(FIELD_LEFT | READONLY));
f.setText("Shift-Delete - Delete Widget");
/* Construct the screen */
add(new LabelField("About Widget Wiffleball", Field.FIELD_HCENTER));
add(new SeparatorField());
add(vfm);
add(b);
}
public void ok() {
UiApplication.getUiApplication().popScreen(this);
}
}
For the code not 'feeling right' - functionally it seems fine, but a bit of refactoring could clean it up a bit - maybe make a method to create and populate the TextFields
private TextField createTextField(String content) {
TextField textField = new TextField(
}
Then that portion of the constructor becomes:
VerticalFieldManager vfm = new VerticalFieldManager(VERTICAL_SCROLL);
vfm.add(createTextField("My application does stuff. This part is the description of what it does."));
vfm.add(createTextField("Commands:"));
vfm.add(createTextField("N - New Widget"));
vfm.add(createTextField("R - Rename Widget"));
vfm.add(createTextField("D - Duplicate Widget"));
vfm.add(createTextField("C - Clear Widget"));
vfm.add(createTextField("Shift-Delete - Delete Widget"));
You solve the layout problem using a custom field manager - really not difficult, you just have to subclass Manager and implement sublayout. Define a 'top', 'bottom', and 'middle' field, and layout accordingly (some code left out as an exercise to the reader, but basically when adding fields to the manager you'll need to be able to specify one as top and one as bottom. The following logic will make sure the bottom field is always stuck to the bottom, and the top 2 fields don't push it off the bottom:
protected void sublayout(int width, int height) {
// retrieve the top, middle and bottom fields
int heightRemaining = height;
layoutChild(topField, width, heightRemaining);
setPositionChild(topField, 0, 0);
heightRemaining -= topField.getHeight();
layoutChild(bottomField, width, heightRemaining);
setPositionChild(bottomField, 0, height - bottomField.getHeight());
heightRemaining -= bottomField.getHeight();
layoutChild(middleField, width, heightRemaining);
setPositionChild(middleField, 0, topField.getHeight());
}
Again, just a framework - no error checking or anything in there. Then set your delegate to be this new manager, set your vertical field manager to be the middle field (you'll probably want a designated setter), your button field to the bottom field (again, designated getter).
I want to know how to create VerticalFieldManager and i want to add some components also.
Couple of options:
A basic vertical field manager:
VerticalFieldManager vfm = new VerticalFieldManager();
// add your fields
vfm.add(new LabelField("First Label");
vfm.add(new LabelField("Second Label");
// etc
// then don't forget to add your vertical field manager to your screen
// assuming you're in the screen's constructor:
add(vfm);
The labels will appear top to bottom in the order you add them.
If you're going to add more fields than will fit vertically on a screen, you may want to make your manager scrollable:
VerticalFieldManager vfm = new VerticalFieldManager(Manager.VERTICAL_SCROLL | Manager.VERTICAL_SCROLLBAR);
// the rest is the same as above
You can omit VERTICAL_SCROLLBAR if you don't want to see the up/down arrows.
But finally, if you just want a bunch of fields vertically on a screen, MainScreen by default uses a scrolling VerticalFieldManager as its delegate so you can just add fields directly and get the same effect:
class MyScreen extends MainScreen {
public MyScreen() {
add(new LabelField("Label 1");
add(new LabelField("Label 2");
// etc
}
}
Creation :
VerticalFieldManager vfm = new VerticalFieldManager();
Add different fields to it:
vfm.add(somefield);