BlackBerry text wraping

Question

我無法對齊BlackBerry屏幕上的文本。我試過使用LabelField或RichTextField，但是文本沒有按照我想要的方式進行對齊。它水平對齊並隱藏在屏幕中。我想要文本在下一行打包，當它水平地碰到屏幕的末尾時，而不是隱藏起來。 這裏是我的代碼 -

import net.rim.device.api.ui.Color; 
import net.rim.device.api.ui.Field; 
import net.rim.device.api.ui.FieldChangeListener; 
import net.rim.device.api.ui.Font; 
import net.rim.device.api.ui.Graphics; 
import net.rim.device.api.ui.Ui; 
import net.rim.device.api.ui.UiApplication; 
import net.rim.device.api.ui.component.LabelField; 
import net.rim.device.api.ui.component.RichTextField; 
import net.rim.device.api.ui.component.SeparatorField; 
import net.rim.device.api.ui.container.HorizontalFieldManager; 
import net.rim.device.api.ui.container.MainScreen; 
import net.rim.device.api.ui.container.VerticalFieldManager; 

public class DetailBloodBank extends MainScreen 
{ 
    String resultData = "", location = "", phoneNumber = ""; 
    LabelField bloodBankName, locationLabel, phoneNumLabel; 
    String bloodBank = ""; 
    LabelField locationDetail, phoneNumDetail; 

    public DetailBloodBank(String data) { 
     super(NO_VERTICAL_SCROLL); 
     int height = Display.getHeight(); 
     int widhth = Display.getWidth(); 

//SizedVFM horizontalFieldManager = new SizedVFM(widhth,height); 
     HorizontalFieldManager horizontalFieldManager = new HorizontalFieldManager(HorizontalFieldManager.NO_VERTICAL_SCROLL) 
     { 
      protected void paint(Graphics g) { 
       g.setBackgroundColor(Color.BLACK); 
       g.clear(); 
       super.paint(g); 
      } 
     }; 
     //setBanner(horizontalFieldManager); 
     resultData = data; 
     System.out.println(resultData); 
     bloodBankName = new LabelField(resultData) 
     { 
      public void paint(Graphics g) { 
       g.setColor(Color.WHITE); 
       super.paint(g); 
      } 
     }; 

     Font font = Font.getDefault().derive(Font.BOLD, 8, Ui.UNITS_pt); 
     bloodBankName.setFont(font); 
     locationLabel = new LabelField("Location") 
     { 
      public void paint(Graphics g) { 
       g.setColor(Color.WHITE); 
       super.paint(g); 
      } 
     }; 
     Font font2 = Font.getDefault().derive(Font.BOLD, 8, Ui.UNITS_pt); 
     locationLabel.setFont(font2); 
     phoneNumLabel = new LabelField("Phone Number") 
     { 
      public void paint(Graphics g) { 
       g.setColor(Color.WHITE); 
       super.paint(g); 
      } 
     }; 
     Font font3 = Font.getDefault().derive(Font.BOLD, 8, Ui.UNITS_pt); 
     phoneNumLabel.setFont(font3); 
     DBHelpers dbh = new DBHelpers(); 

     dbh.retrieveDetails(resultData); 
     location = dbh.getLocation(); 
     phoneNumber = dbh.getPhoneNumber(); 
     dbh.getConnectionClose(); 
     phoneNumDetail = new LabelField(phoneNumber) 
     { 
      public void paint(Graphics g) { 
       g.setColor(Color.WHITE); 
       super.paint(g); 
      } 
     }; 
     Font font4 = Font.getDefault().derive(Font.PLAIN, 6, Ui.UNITS_pt); 
     phoneNumDetail.setFont(font4); 

     locationDetail = new LabelField(location) 
     { 
      public void paint(Graphics g) { 
       g.setColor(Color.WHITE); 
       super.paint(g); 
      } 
     }; 
     Font font5 = Font.getDefault().derive(Font.PLAIN, 6, Ui.UNITS_pt); 
     locationDetail.setFont(font5); 
     final SeparatorField sepfield2 = new SeparatorField(SeparatorField.LINE_HORIZONTAL | Field.USE_ALL_WIDTH) 
     { 
      protected void paint(Graphics g) { 
       g.setBackgroundColor(Color.WHITE); 
       g.clear(); 
       super.paint(g); 
      } 

      protected void layout(int maxWidth, int maxHeight) { 
       int width = Display.getWidth(); 
       int height = 25; //height of the manager 
       super.layout(1250, 15); 
      } 
     }; 
     final VerticalFieldManager verticalFieldManager = new VerticalFieldManager(NO_HORIZONTAL_SCROLL); 


     verticalFieldManager.add(locationLabel); 
     verticalFieldManager.add(locationDetail); 
     final VerticalFieldManager verticalFieldManager2 = new VerticalFieldManager(NO_HORIZONTAL_SCROLL); 

     verticalFieldManager2.add(phoneNumLabel); 
     verticalFieldManager2.add(phoneNumDetail); 

     VerticalFieldManager routeManager2 = new VerticalFieldManager() 
     { 
      protected void sublayout(int width, int height) { 
       layoutChild(bloodBankName, getPreferredWidth(), getPreferredHeight()); 
       layoutChild(sepfield2, getPreferredWidth(), getPreferredHeight()); 

       layoutChild(verticalFieldManager, getPreferredWidth(), getPreferredHeight()); 
       layoutChild(verticalFieldManager2, getPreferredWidth(), getPreferredHeight()); 

       setPositionChild(bloodBankName, 5, 15); 
       setPositionChild(sepfield2, 0, 35); 

       setPositionChild(verticalFieldManager, 0, 72); 

       int y = verticalFieldManager.getHeight(); 
       System.out.println(y); 
       setPositionChild(verticalFieldManager2, 0, y + 90); 


       super.setExtent(width, height); 
      } 
     }; 
     routeManager2.add(bloodBankName); 
     routeManager2.add(sepfield2); 

     routeManager2.add(verticalFieldManager); 
     routeManager2.add(verticalFieldManager2); 

     horizontalFieldManager.add(routeManager2); 
     add(horizontalFieldManager); 
    } 
} 

Answer 1

問題是你的佈局邏輯在routeManager2。

layoutChild(bloodBankName, getPreferredWidth(), getPreferredHeight()); 

將labelField或RichTextField的優選寬度將是與它在當前字體大小相關聯的字符串的寬度。如果可能，它傾向於在一行上顯示所有內容。因此，不要傳遞它的首選項，而是將提供的寬度傳遞給sublayout（int，int）。

layoutChild(bloodBankName, width, getPreferredHeight()); 

希望這會有所幫助。