hellomidlet.java

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/*
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 * and open the template in the editor.
 */

package hello;

import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;
import java.util.*;
/**
 * @author Administrator
 */
public class HelloMIDlet extends MIDlet implements CommandListener {

    private boolean midletPaused = false;

    //<editor-fold defaultstate="collapsed" desc=" Generated Fields ">//GEN-BEGIN:|fields|0|
    private Command okCommand1;
    private Command exitCommand1;
    private Command okCommand;
    private Command exitCommand;
    private Form form;
    private TextField tfAns;
    private TextField textField;
    private StringItem SI_result;
    private Alert alert;
    //</editor-fold>//GEN-END:|fields|0|

    /**
     * The HelloMIDlet constructor.
     */
    public HelloMIDlet() {
    }

    //<editor-fold defaultstate="collapsed" desc=" Generated Methods ">//GEN-BEGIN:|methods|0|
    //</editor-fold>//GEN-END:|methods|0|

    //<editor-fold defaultstate="collapsed" desc=" Generated Method: initialize ">//GEN-BEGIN:|0-initialize|0|0-preInitialize
    /**
     * Initilizes the application.
     * It is called only once when the MIDlet is started. The method is called before the <code>startMIDlet</code> method.
     */
    private void initialize() {//GEN-END:|0-initialize|0|0-preInitialize
        // write pre-initialize user code here
//GEN-LINE:|0-initialize|1|0-postInitialize
        // write post-initialize user code here
    }//GEN-BEGIN:|0-initialize|2|
    //</editor-fold>//GEN-END:|0-initialize|2|


    //<editor-fold defaultstate="collapsed" desc=" Generated Method: startMIDlet ">//GEN-BEGIN:|3-startMIDlet|0|3-preAction
    /**
     * Performs an action assigned to the Mobile Device - MIDlet Started point.
     */
    public void startMIDlet() {//GEN-END:|3-startMIDlet|0|3-preAction
        // write pre-action user code here
        switchDisplayable(null, getForm());//GEN-LINE:|3-startMIDlet|1|3-postAction


        // write post-action user code here
    }//GEN-BEGIN:|3-startMIDlet|2|
    //</editor-fold>//GEN-END:|3-startMIDlet|2|

    //<editor-fold defaultstate="collapsed" desc=" Generated Method: resumeMIDlet ">//GEN-BEGIN:|4-resumeMIDlet|0|4-preAction
    /**
     * Performs an action assigned to the Mobile Device - MIDlet Resumed point.
     */
    public void resumeMIDlet() {//GEN-END:|4-resumeMIDlet|0|4-preAction
        // write pre-action user code here
//GEN-LINE:|4-resumeMIDlet|1|4-postAction
        // write post-action user code here
    }//GEN-BEGIN:|4-resumeMIDlet|2|
    //</editor-fold>//GEN-END:|4-resumeMIDlet|2|

    //<editor-fold defaultstate="collapsed" desc=" Generated Method: switchDisplayable ">//GEN-BEGIN:|5-switchDisplayable|0|5-preSwitch
    /**
     * Switches a current displayable in a display. The <code>display</code> instance is taken from <code>getDisplay</code> method. This method is used by all actions in the design for switching displayable.
     * @param alert the Alert which is temporarily set to the display; if <code>null</code>, then <code>nextDisplayable</code> is set immediately
     * @param nextDisplayable the Displayable to be set
     */
    public void switchDisplayable(Alert alert, Displayable nextDisplayable) {//GEN-END:|5-switchDisplayable|0|5-preSwitch
        // write pre-switch user code here
        Display display = getDisplay();//GEN-BEGIN:|5-switchDisplayable|1|5-postSwitch
        if (alert == null) {
            display.setCurrent(nextDisplayable);
        } else {
            display.setCurrent(alert, nextDisplayable);
        }//GEN-END:|5-switchDisplayable|1|5-postSwitch
        // write post-switch user code here
    }//GEN-BEGIN:|5-switchDisplayable|2|
    //</editor-fold>//GEN-END:|5-switchDisplayable|2|

    //<editor-fold defaultstate="collapsed" desc=" Generated Method: commandAction for Displayables ">//GEN-BEGIN:|7-commandAction|0|7-preCommandAction
    /**
     * Called by a system to indicated that a command has been invoked on a particular displayable.
     * @param command the Command that was invoked
     * @param displayable the Displayable where the command was invoked
     */
    public void commandAction(Command command, Displayable displayable) {//GEN-END:|7-commandAction|0|7-preCommandAction
        // write pre-action user code here
        if (displayable == alert) {//GEN-BEGIN:|7-commandAction|1|33-preAction
            if (command == exitCommand1) {//GEN-END:|7-commandAction|1|33-preAction
                // write pre-action user code here
                exitMIDlet();//GEN-LINE:|7-commandAction|2|33-postAction
                // write post-action user code here
            } else if (command == okCommand1) {//GEN-LINE:|7-commandAction|3|31-preAction
                // write pre-action user code here
                switchDisplayable(null, getForm());//GEN-LINE:|7-commandAction|4|31-postAction
                             textField.setString("");
                SI_result.setText("");
                rankGenerator();

                // write post-action user code here
            }//GEN-BEGIN:|7-commandAction|5|19-preAction
        } else if (displayable == form) {
            if (command == exitCommand) {//GEN-END:|7-commandAction|5|19-preAction
                // write pre-action user code here
                exitMIDlet();//GEN-LINE:|7-commandAction|6|19-postAction
                // write post-action user code here
            } else if (command == okCommand) {//GEN-LINE:|7-commandAction|7|27-preAction
                // write pre-action user code here
//GEN-LINE:|7-commandAction|8|27-postAction
                // write post-action user code here

  String strAns=tfAns.getString();
                String strLab=textField.getString();
                if(strLab.equals("9")){
                    tfAns.setConstraints(TextField.NUMERIC);
                }else{
    int intA=0,intB=0;
    for(int i=0;i<=3;i++){
        for(int j=0;j<=3;j++){
           if(strLab.substring(i,i+1).equals(strAns.substring(j,j+1))){
              if(i==j){
                 intA++;
              }else{
                 intB++;
              }
           }
        }
    }
    SI_result.setText("\n" + strLab + " " + intA + "A" + intB + "B" + SI_result.getText());
    if(intA==4){
        SI_result.setText("Yeh~~" + SI_result.getText());
        switchDisplayable(getAlert(), getForm());
    }
    textField.setString("");
}

            }//GEN-BEGIN:|7-commandAction|9|7-postCommandAction
        }//GEN-END:|7-commandAction|9|7-postCommandAction
        // write post-action user code here
    }//GEN-BEGIN:|7-commandAction|10|
    //</editor-fold>//GEN-END:|7-commandAction|10|

    //<editor-fold defaultstate="collapsed" desc=" Generated Getter: exitCommand ">//GEN-BEGIN:|18-getter|0|18-preInit
    /**
     * Returns an initiliazed instance of exitCommand component.
     * @return the initialized component instance
     */
    public Command getExitCommand() {
        if (exitCommand == null) {//GEN-END:|18-getter|0|18-preInit
            // write pre-init user code here
            exitCommand = new Command("Exit", Command.EXIT, 0);//GEN-LINE:|18-getter|1|18-postInit
            // write post-init user code here
        }//GEN-BEGIN:|18-getter|2|
        return exitCommand;
    }
    //</editor-fold>//GEN-END:|18-getter|2|

    //<editor-fold defaultstate="collapsed" desc=" Generated Getter: form ">//GEN-BEGIN:|14-getter|0|14-preInit
    /**
     * Returns an initiliazed instance of form component.
     * @return the initialized component instance
     */
    public Form getForm() {
        if (form == null) {//GEN-END:|14-getter|0|14-preInit
            // write pre-init user code here
            form = new Form("Welcome", new Item[] { getTextField(), getTfAns(), getSI_result() });//GEN-BEGIN:|14-getter|1|14-postInit
            form.addCommand(getExitCommand());
            form.addCommand(getOkCommand());
            form.setCommandListener(this);//GEN-END:|14-getter|1|14-postInit
            // write post-init user code here
        }//GEN-BEGIN:|14-getter|2|
        return form;
    }
    //</editor-fold>//GEN-END:|14-getter|2|



    //<editor-fold defaultstate="collapsed" desc=" Generated Getter: textField ">//GEN-BEGIN:|22-getter|0|22-preInit
    /**
     * Returns an initiliazed instance of textField component.
     * @return the initialized component instance
     */
    public TextField getTextField() {
        if (textField == null) {//GEN-END:|22-getter|0|22-preInit
            // write pre-init user code here
            textField = new TextField("\u56DB\u4F4D\u6578", "", 32, TextField.ANY);//GEN-LINE:|22-getter|1|22-postInit
            // write post-init user code here
        }//GEN-BEGIN:|22-getter|2|
        return textField;
    }
    //</editor-fold>//GEN-END:|22-getter|2|

    //<editor-fold defaultstate="collapsed" desc=" Generated Getter: tfAns ">//GEN-BEGIN:|23-getter|0|23-preInit
    /**
     * Returns an initiliazed instance of tfAns component.
     * @return the initialized component instance
     */
    public TextField getTfAns() {
        if (tfAns == null) {//GEN-END:|23-getter|0|23-preInit
            // write pre-init user code here
            tfAns = new TextField("\u7B54\u6848\u662F", "", 32, TextField.ANY);//GEN-LINE:|23-getter|1|23-postInit
            // write post-init user code here
        }//GEN-BEGIN:|23-getter|2|
        return tfAns;
    }
    //</editor-fold>//GEN-END:|23-getter|2|

    //<editor-fold defaultstate="collapsed" desc=" Generated Getter: SI_result ">//GEN-BEGIN:|24-getter|0|24-preInit
    /**
     * Returns an initiliazed instance of SI_result component.
     * @return the initialized component instance
     */
    public StringItem getSI_result() {
        if (SI_result == null) {//GEN-END:|24-getter|0|24-preInit
            // write pre-init user code here
            SI_result = new StringItem("\u8F38\u5165\u7B54\u6848\u662F", "");//GEN-LINE:|24-getter|1|24-postInit
            // write post-init user code here
        }//GEN-BEGIN:|24-getter|2|
        return SI_result;
    }
    //</editor-fold>//GEN-END:|24-getter|2|

    //<editor-fold defaultstate="collapsed" desc=" Generated Getter: okCommand ">//GEN-BEGIN:|26-getter|0|26-preInit
    /**
     * Returns an initiliazed instance of okCommand component.
     * @return the initialized component instance
     */
    public Command getOkCommand() {
        if (okCommand == null) {//GEN-END:|26-getter|0|26-preInit
            // write pre-init user code here
            okCommand = new Command("Ok", Command.OK, 0);//GEN-LINE:|26-getter|1|26-postInit
            // write post-init user code here
        }//GEN-BEGIN:|26-getter|2|
        return okCommand;
    }
    //</editor-fold>//GEN-END:|26-getter|2|

    //<editor-fold defaultstate="collapsed" desc=" Generated Getter: okCommand1 ">//GEN-BEGIN:|30-getter|0|30-preInit
    /**
     * Returns an initiliazed instance of okCommand1 component.
     * @return the initialized component instance
     */
    public Command getOkCommand1() {
        if (okCommand1 == null) {//GEN-END:|30-getter|0|30-preInit
            // write pre-init user code here
            okCommand1 = new Command("Ok", Command.OK, 0);//GEN-LINE:|30-getter|1|30-postInit
            // write post-init user code here
        }//GEN-BEGIN:|30-getter|2|
        return okCommand1;
    }
    //</editor-fold>//GEN-END:|30-getter|2|

    //<editor-fold defaultstate="collapsed" desc=" Generated Getter: exitCommand1 ">//GEN-BEGIN:|32-getter|0|32-preInit
    /**
     * Returns an initiliazed instance of exitCommand1 component.
     * @return the initialized component instance
     */
    public Command getExitCommand1() {
        if (exitCommand1 == null) {//GEN-END:|32-getter|0|32-preInit
            // write pre-init user code here
            exitCommand1 = new Command("Exit", Command.EXIT, 0);//GEN-LINE:|32-getter|1|32-postInit
            // write post-init user code here
        }//GEN-BEGIN:|32-getter|2|
        return exitCommand1;
    }
    //</editor-fold>//GEN-END:|32-getter|2|

    //<editor-fold defaultstate="collapsed" desc=" Generated Getter: alert ">//GEN-BEGIN:|28-getter|0|28-preInit
    /**
     * Returns an initiliazed instance of alert component.
     * @return the initialized component instance
     */
    public Alert getAlert() {
        if (alert == null) {//GEN-END:|28-getter|0|28-preInit
            // write pre-init user code here
            alert = new Alert("alert", "恭喜你答對啦", null, null);//GEN-BEGIN:|28-getter|1|28-postInit
            alert.addCommand(getOkCommand1());
            alert.addCommand(getExitCommand1());
            alert.setCommandListener(this);
            alert.setTimeout(5000);//GEN-END:|28-getter|1|28-postInit
            // write post-init user code here
        }//GEN-BEGIN:|28-getter|2|
        return alert;
    }
    //</editor-fold>//GEN-END:|28-getter|2|

    /**
     * Returns a display instance.
     * @return the display instance.
     */
    public Display getDisplay () {
        return Display.getDisplay(this);
    }

    /**
     * Exits MIDlet.
     */
    public void exitMIDlet() {
        switchDisplayable (null, null);
        destroyApp(true);
        notifyDestroyed();
    }

    /**
     * Called when MIDlet is started.
     * Checks whether the MIDlet have been already started and initialize/starts or resumes the MIDlet.
     */
    public void startApp() {
        if (midletPaused) {
            resumeMIDlet ();
        } else {
            initialize ();
            startMIDlet ();
             rankGenerator();
        }
        midletPaused = false;
    }

    /**
     * Called when MIDlet is paused.
     */
    public void pauseApp() {
        midletPaused = true;
    }

    /**
     * Called to signal the MIDlet to terminate.
     * @param unconditional if true, then the MIDlet has to be unconditionally terminated and all resources has to be released.
     */
    public void destroyApp(boolean unconditional) {
    }
     public void rankGenerator(){
          tfAns.setString("");
         // tfAns.setConstraints(TextField.PASSWORD | tfAns.getConstraints());
          Random random = new Random();
          int i=0;
            while(i<=3){
              //可產生0~9的數字;
              int intRank = Math.abs(random.nextInt() % 9);
              String strAns=tfAns.getString();
              if(strAns.indexOf(""+intRank)==-1){
                 tfAns.setString(tfAns.getString() + (int) intRank);
                 i++;
              }
            }
      }

}