如何在黑莓中給我的頁面幻燈片動畫？

我正在創建一個BlackBerry應用程序，現在我想單擊圖像按鈕時顯示一個動畫。在我的應用程序中，我使用啓動畫面，然後顯示登錄頁面。當我點擊我的登錄頁面的提交按鈕時，顯示一個主屏幕，在那裏我想顯示一個幻燈片動畫。如何在黑莓中給我的頁面幻燈片動畫？

這是我的代碼：

public class LoginPage extends MainScreen implements FieldChangeListener { 

     public TextField tf_username; 
     public TextField tf_password;  
     private Bitmap[] img1;  
     public LabelField labeluser; 
     public LabelField labelpass; 
     public static String strUsername = "";  
     public static String strPassword = "";  
     public CheckboxField objRemembercheckbox;  
     private ImageButton btn_login;  
     private ImageButton btn_clear;  
     public BitmapField loading = new BitmapField(Bitmap.getBitmapResource("login-bar.png")); 
     public H_FieldManager hfm_btn; 
     public VerticalFieldManager vfm_user, vfm_pass; 
     public PleaseWaitPopupScreen waitPopupScreen = null; 
     public VerticalFieldManager vfmMainManager; 
     public static boolean loginFlag = false; 
     public static boolean flagOutletButton; 
     public RecordStore objLoginRecordStore; 
     private String login_record_Store_Name = "LoginRMS"; 

    public LoginPage() {  // TODO Auto-generated constructor stub   super(USE_ALL_WIDTH | USE_ALL_HEIGHT);  setTitle(loading); 
       try { 
         Background bg = BackgroundFactory.createSolidTransparentBackground(
        Color.BLUE, 100);   getMainManager().setBackground(bg); 
        } catch (Exception e) {    // TODO: handle exception  } 

     labeluser = new LabelField("Enter Username : ", Field.FIELD_LEFT);  labeluser.setMargin(10, 0, 0, 10);  labeluser.setColor(Color.BLACK); 

     tf_username = new TextField(TextField.TYPE_PLAIN, Field.FIELD_HCENTER); 

     labelpass = new LabelField("Enter Password : ", Field.FIELD_LEFT);  labelpass.setMargin(10, 0, 0, 10);  labelpass.setColor(Color.BLACK); 

     tf_password = new TextField(TextField.TYPE_PASSWORD, 
       Field.FIELD_HCENTER); 

     objRemembercheckbox = new CheckboxField("Remember Me", false);  objRemembercheckbox.setMargin(10, 0, 0, 10); 

       img1 = new Bitmap[3];  img1[0] = Bitmap.getBitmapResource("btn-hover.png");  img1[1] = Bitmap.getBitmapResource("btn.png");  img1[2] = Bitmap.getBitmapResource("btn.png"); 

     btn_login = new ImageButton(img1, "Login", Field.FIELD_LEFT);  btn_login.setColor(Color.WHITE);  btn_clear = new ImageButton(img1, "Clear", Field.FIELD_RIGHT);  btn_clear.setColor(Color.WHITE); 

     hfm_btn = new H_FieldManager(btn_login, btn_clear, true, 
       Field.FIELD_HCENTER);  vfm_user = new VerticalFieldManager();  vfm_user.add(labeluser);  vfm_user.add(tf_username); 

     vfm_pass = new VerticalFieldManager();  vfm_pass.add(labelpass);  vfm_pass.add(tf_password);  add(vfm_user);  add(vfm_pass);  add(objRemembercheckbox);  add(hfm_btn); 

     btn_login.setChangeListener(this);  btn_clear.setChangeListener(this); 

    } 

    public void fieldChanged(Field field, int context) {  // TODO Auto-generated method stub  if (field == btn_clear) {   tf_username.setText(" ");   tf_password.setText(" "); 

     } else if (field == btn_login) {   login();  } 

    } 


public void login() { 

     try { 

      LoginPage.strUsername = tf_username.getText().toString();   System.out.println("strUsername==" + strUsername);   LoginPage.strPassword = tf_password.getText().toString();   System.out.println("strPassword==" + strPassword); 

      if (strUsername.length() == 0 || strPassword.length() == 0 
        || strUsername == null || strPassword == null) { 
       Dialog.alert("You must enter credentials"); 
       invalidate();   } else { 

       // strUsername=username.getText(); 
       // strPassword=password.getText(); 

       try { 

        waitPopupScreen = new PleaseWaitPopupScreen("Please wait.."); 
        UiApplication.getUiApplication() 
          .pushScreen(waitPopupScreen); 
        new Thread() { 
         public void run() { 
          ConnectToServer objConnectToServer = new ConnectToServer(); 


          loginFlag = objConnectToServer.loginCheck(
            strUsername, strPassword); 

          UiApplication.getUiApplication().invokeLater(
            new Runnable() { 
             public void run() { 
              UiApplication.getUiApplication() 
                .popScreen(waitPopupScreen); 

              if (loginFlag == true) { 
               LoginPage.flagOutletButton = false; 
               System.out 
                 .println("Calling getOutletInfo"); 

               HomeScreen objHome= new HomeScreen(); 
               UiApplication 
                 .getUiApplication() 
                 .pushScreen(objHome); 

              } 

              else { 
               Dialog.alert("Username Or Password Is Incorrect"); 

              } 

             } 

            }); 
         }; 
        }.start(); 

        // ConnectToServer objConnectToServer=new ConnectToServer(); 
        // 
        // loginFlag=objConnectToServer.loginCheck(strUsername, 
        // strPassword); 

        System.out.println("loginFlag==" + loginFlag); 

       } catch (Exception e) { 
        // TODO: handle exception 
        e.printStackTrace(); 
       } 

      } 

     } catch (Exception e) {    // TODO: handle exception   e.printStackTrace();  } 

    } 

    }

請建議如何實現幻燈片動畫。

謝謝。

來源

2012-07-05 Roy_joy

什麼是您的應用程序的最小目標OS版本？ –

如何在黑莓中給我的頁面幻燈片動畫？

回答

相關問題