JavaMe開發：繪制文本框TextEdit(4)

7 PopUpTextBox輸入值處理

依據調用的對象，以及編輯對象，對輸入的值進行處理，傳遞給父對象編輯框

if(object_name.equals("registScreen"))  
{  
        if(editor.equals("regist_name"))  
        {  
                if(args_t[3]!=""||args_t[3]!=null||args_t[4]!=""||args_t[4]!=null)  
                {  
                    args[0] = object_name;  
                    args[1] = editor;  
                    args[2] = this.canvasText;  
                    args[3] = args_t[3];  
                    args[4] = args_t[4];  
                }  
                controller.handleEvent(UIController.EventID.EVENT_USER_REGIST_EDIT_BACK,args);  
    }  
    else if(editor.equals("regist_passwd"))  
    {  
                if(args_t[2]!=""||args_t[2]!=null||args_t[4]!=""||args_t[4]!=null)  
                {  
                    args[0] = object_name;  
                    args[1] = editor;  
                    args[2] = args_t[2];  
                    args[3] = this.canvasText;  
                    args[4] = args_t[4];  
                }  
                controller.handleEvent(UIController.EventID.EVENT_USER_REGIST_EDIT_BACK,args);  
    }  
    else if(editor.equals("regist_passwd_re"))  
    {  
                if(args_t[2]!=""||args_t[2]!=null||args_t[3]!=""||args_t[3]!=null)  
                {  
                    args[0] = object_name;  
                    args[1] = editor;  
                    args[2] = args_t[2];  
                    args[3] = args_t[3];  
                    args[4] = this.canvasText;  
                }  
                controller.handleEvent(UIController.EventID.EVENT_USER_REGIST_EDIT_BACK,args);  
    }  
} 

8 輸入值的顯示

(1) 新建對象

private TextEdit textEdit_name;  
textEdit_name = new TextEdit(this);  

(2) 接受輸入的參數

object_name = ((String)args[0]!=null)?(String)args[0]:"";  
editor = ((String)args[1]!=null)?(String)args[1]:"";  
username = ((String)args[2]!=null)?(String)args[2]:"";  
passwd = ((String)args[3]!=null)?(String)args[3]:"";  
passwd_re = ((String)args[4]!=null)?(String)args[4]:""; 

(3) 光標控制，定位到編輯對象，控制編輯對象的光標閃爍(run方法)

private void redraw()  
{  
    switch(currentlySelectedIndex)  
    {  
        case 0:  
        {  
            cursorBlinkOn2 = false;  
            cursorBlinkOn3 = false;  
            editor = "regist_name";  
            break;  
        }  
        case 1:  
        {  
            cursorBlinkOn1 = false;  
            cursorBlinkOn3 = false;  
            editor = "regist_passwd";  
            break;  
        }  
        case 2:  
        {  
            cursorBlinkOn1 = false;  
            cursorBlinkOn2 = false;  
            editor = "regist_passwd_re";  
            break;  
        }  
        default:;  
    }  
//...  
 
} 

(4) 編輯框的繪制

private void redraw()  
{  
    ...       
    textEdit_name.drawTextBox(this, graphics, username, textEdit_name_x, textEdit_name_y, cursorBlinkOn1);  
    textEdit_passwd.drawTextBox(this, graphics, passwd, textEdit_passwd_x, textEdit_passwd_y, cursorBlinkOn2);  
    textEdit_passwd.drawTextBox(this, graphics, passwd_re, textEdit_passwd_re_x, textEdit_passwd_re_y, cursorBlinkOn3);  
    textEdit_name.flushGraphics();  
}  

實現的效果如圖1所示：

圖1 編輯框效果