在Radiobutton上隐藏EditField点击黑莓

Question

我有两个Radiobutton和一个RadioButton点击我想隐藏editfield，所以请任何人都可以帮助我。 谢谢，提前。

Answer 1

也许你可以尝试使用管理删除和添加字段。试试：

 


    package mypackage; 

    import net.rim.device.api.ui.Field; 
    import net.rim.device.api.ui.FieldChangeListener; 

     import net.rim.device.api.ui.component.BasicEditField; 
     import net.rim.device.api.ui.component.RadioButtonField; 
     import net.rim.device.api.ui.component.RadioButtonGroup; 
     import net.rim.device.api.ui.container.MainScreen; 
     import net.rim.device.api.ui.container.VerticalFieldManager; 

     public final class MyScreen extends MainScreen { 

      private BasicEditField bef = new BasicEditField(); 

      private VerticalFieldManager manager = new VerticalFieldManager(); 

      private RadioButtonGroup rbg = new RadioButtonGroup(); 

      public MyScreen() { 

       setTitle("Hide Control Demo"); 

       manager.add(bef); 

       add(manager); 

       RadioButtonField rbf1 = new RadioButtonField("Option 1", rbg, true); 

       RadioButtonField rbf2 = new RadioButtonField("Option 2", rbg, false); 

       add(rbf1); 

       add(rbf2); 

       rbf2.setChangeListener(new FieldChangeListener() { 

        public void fieldChanged(Field field, int context) { 

         if (bef.getManager() != null && rbg.getSelectedIndex() == 1) { 

          manager.delete(bef); 

          System.out.println("Option 2 Selected"); 
         } 
        } 
       }); 

      } 

     } 

 

Answer 2

试试这个它会工作

package com.hb; 



import net.rim.device.api.ui.Field; 
import net.rim.device.api.ui.FieldChangeListener; 
import net.rim.device.api.ui.UiApplication; 
import net.rim.device.api.ui.component.EditField; 
import net.rim.device.api.ui.component.RadioButtonField; 
import net.rim.device.api.ui.component.RadioButtonGroup; 
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 Startup extends UiApplication{ 

    public static void main(String[] args) { 
     Startup start=new Startup(); 
     start.enterEventDispatcher(); 
    } 
    public Startup() { 
     pushScreen(new screen()); 
    } 
} 

class screen extends MainScreen implements FieldChangeListener 
{ 

    RadioButtonField field1,field2; 
    private EditField edit1; 
    private VerticalFieldManager edit_mgr=null; 
    public screen() { 
     HorizontalFieldManager hr=new HorizontalFieldManager(); 
     RadioButtonGroup g=new RadioButtonGroup(); 
     field1=new RadioButtonField("edit", g,true); 
     field1.setChangeListener(this); 
     hr.add(field1); 

     field2=new RadioButtonField("no edit", g,false); 
     field2.setChangeListener(this); 
     hr.add(field2); 
     add(hr); 


     edit_mgr=new VerticalFieldManager(); 
     edit1=new EditField(); 
     edit1.setEditable(true); 
     edit_mgr.add(edit1); 
     add(edit_mgr); 
    } 
    public void fieldChanged(Field field, int context) { 
     if(field==field1){ 
      synchronized (UiApplication.getEventLock()) { 
       edit1.setEditable(true); 

      } 
     }else if(field==field2){ 
      synchronized (UiApplication.getEventLock()) { 
       edit1.setEditable(false); 
      } 
     } 

    } 

}