在自定义对话框黑莓

Question

如何创建自定义对话框，并在黑莓

Answer 1

public class CustomDialog extends Screen implements FieldChangeListener 
{ 
private ButtonField okButton; 
public void fieldChanged(Field field, int context) 
{ 
    if (field == okButton) 
    { 
     close(); 

    } 
} 
public CustomDialog(String message) 
{ 
    super(new VerticalFieldManager(), Screen.DEFAULT_CLOSE); 


    add(new LabelField("Search Error",LabelField.FIELD_HCENTER)); 
    add(new LabelField("")); 
    add(new LabelField(message,LabelField.FIELD_HCENTER)); 
    add(new LabelField(""));   
    okButton = new ButtonField("OK",ButtonField.FIELD_HCENTER); 
    okButton.setChangeListener(this); 
    add(okButton); 
} 
protected void paintBackground(Graphics graphics) 
{ 
    graphics.setColor(Color.GRAY); 
    graphics.fillRoundRect(0, 0, getWidth(), getHeight(), 12, 12); 
    graphics.setColor(Color.BLACK); 
    graphics.drawRoundRect(0, 0, getWidth(), getHeight(), 12, 12); 
} 
protected void sublayout(int width, int height) 
{ 
    layoutDelegate(width - 80, height - 80); 
    setPositionDelegate(10, 10); 
    setExtent(width - 60, Math.min(height - 60, getDelegate().getHeight() + 20)); 
    setPosition(30, (height - getHeight())/2); 
} 
}