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Symbian中的对话框

Symbian中的对话框

UI有的时候还是有要求的,收录一下,以后需要的时候,查一下就OK.

1、非阻塞提示框

symbian定义了几个提示类,分别是:

confirm类:CAknConfirmationNote

info类: CAknInformationNote

warning类:CAknWarningNote

error类: CAknErrorNote

头文件:aknnotewrappers.h

lib:avkon.lib eikcdlg.lib eikctl.lib

使用方法:

Code:

TBuf<32> buf;
  buf.Copy(_L("info note"));
  CAknInformationNote* iInfoNote = new (ELeave) CAknInformationNote;
  iInfoNote->ExecuteLD(buf);
        

此类提示框不阻塞线程,ExecuteLD执行显示提示框后,后面的语句继续执行。

2、阻塞提示框

void CEikonEnv::AlertWin(const TDesC& aMsg);

void CEikonEnv::AlertWin(const TDesC& aMsg1,const TDesC& aMsg2);

static void CEikonEnv::InfoWinL(const TDesC& aFirstLine,const TDesC& aSecondLine);

AlertWin为CEikonEnv类的非静态成员函数,InfoWinL为CEikonEnv类的静态成员函数。

AlertWin只能在ui、view和container中使用,使用方法如下:

Code:

iEikonEnv->AlertWin(_L("text"));
        

InfoWinL可以在任意类中使用,使用方法如下:

Code:

CEikonEnv::Static()->InfoWinL(_L("note:"), _L("text"));
        

为方便使用,常定义宏来使用这类提示框,如:

Code:

#define DEBUG_DIALOG(x) iEikonEnv->AlertWin(##x);
 #define DEBUG_DIALOG1(x) CEikonEnv::Static()->InfoWinL(_L("note:"), ##x);
 #define DEBUG_DIALOG2(x,y) CEikonEnv::Static()->InfoWinL(##x, ##y);
 
 可以这么使用:
 TBuf<32> buf;
 buf.Copy(_L("test"));
 DEBUG_DIALOG(buf);
 DEBUG_DIALOG1(buf);
 DEBUG_DIALOG2(buf,_L("text"));
        

此类提示框在S60 2nd中可阻塞线程,只有用户按键退出提示框后,后面的程序才能接着运行;在S60 3rd中不阻塞线程。

3、进度条对话框

进度条对话框类为:

CAknProgressDialog

头文件:aknprogressdialog.h

lib: avkon.lib eikcdlg.lib eikctl.lib

使用方法:

Code:

//初始化进度条
 CAknProgressDialog* iProgressDialog;
 CEikProgressInfo* iProgressInfo;
   iProgressDialog = new ( ELeave ) CAknProgressDialog( reinterpret_cast
                                                        <CEikDialog**> 
                                                        ( &iProgressDialog ) );
   iProgressDialog->SetCallback( this );
   iProgressDialog->PrepareLC( R_RESOURCE_PROGRESS_NOTE );   //从资源文件构造对话框,资源见下面的定义
   iProgressInfo = iProgressDialog->GetProgressInfoL();
   iProgressInfo->SetFinalValue( aMaxValue );   //设置进度条的最大值(结束值)
   iProgressDialog->RunLD();
   
   //更新进度条
   iProgressInfo->IncrementAndDraw( aStep );   

 //结束进度条
 iProgressDialog->ProcessFinishedL();
 delete iProgressDialog;
 
 RESOURCE DIALOG R_RESOURCE_PROGRESS_NOTE   //进度条对话框资源
     {
     flags = EAknProgressNoteFlags;
     buttons = R_AVKON_SOFTKEYS_CANCEL;
     items =
         {
         DLG_LINE
             {
             type = EAknCtNote;
             id = EMagicBoxCtrlIdProgressNote;
             control = AVKON_NOTE
                 {
                 layout = EProgressLayout;
                 singular_label = "对话框中显示的文字";
                 plural_label = "download";
                 imagefile = AVKON_BMPFILE_NAME;    //第二版中 图标文件为 #define AVKON_BMPFILE_NAME "z://system//data//avkon.mbm"
                 imageid = EMbmAvkonQgn_note_sml;   //这两项可更改显示不同图标
                 imagemask = EMbmAvkonQgn_note_sml_mask;
                 };
             }
         };
     }
        

4、等待对话框

等待对话框要用到的类:

CAknGlobalNote

头文件:aknglobalnote.h

lib:aknnotify.lib eiksrv.lib

使用方法:

Code:

//显示等待对话框
   CAknGlobalNote* globalNote = CAknGlobalNote::NewL();
   CleanupStack::PushL( globalNote );
   TInt iWaitNoteId = globalNote->ShowNoteL( EAknGlobalWaitNote, _L("对话框中显示的文字") );
   CleanupStack::PopAndDestroy();
   
   //结束等待对话框
   CAknGlobalNote * note = CAknGlobalNote::NewL();
   CleanupStack::PushL( note );
   note->CancelNoteL( iWaitNoteId );
   CleanupStack::PopAndDestroy();
        

注:

CAknGlobalNote类除了显示等待对话框外还可显示多种类型的全局对话框,具体类型可通过ShowNoteL的第一个参数指定,可能的类型如下:

Code:

enum TAknGlobalNoteType
 {
 EAknGlobalInformationNote = 1,
 EAknGlobalWarningNote,
 EAknGlobalConfirmationNote,
 EAknGlobalErrorNote,
 EAknGlobalChargingNote,
 EAknGlobalWaitNote,
 EAknGlobalPermanentNote,
 EAknGlobalNotChargingNote,
 EAknGlobalBatteryFullNote,
 EAknGlobalBatteryLowNote,
 EAknGlobalRechargeBatteryNote,
 EAknCancelGlobalNote,
 EAknGlobalTextNote
 };
        

5、询问对话框

询问对话框用到的类:

CAknQueryDialog

头文件:AknQueryDialog.h

lib:avkon.lib

使用方法:

Code:

CAknQueryDialog* dlg;
 dlg = CAknQueryDialog::NewL( CAknQueryDialog::ENoTone );
 dlg->PrepareLC( R_RESOURCE_QUERY_DIALOG ); //从资源文件构造对话框,资源见下面的定义
 TInt ret = dlg->RunLD();   //若用户选择“是”,返回非0,选择“否”,则返回0

 RESOURCE DIALOG R_RESOURCE_QUERY_DIALOG   //询问对话框资源
     {
     flags = EGeneralQueryFlags;
     buttons = R_AVKON_SOFTKEYS_YES_NO;   //CBA显示“是”和“否”两个按钮
     items =
         {
         DLG_LINE
             {
             type = EAknCtQuery;
             id = EGeneralQuery;
             control = AVKON_CONFIRMATION_QUERY    //表示这是confirm询问对话框,用户选择“是”或“否”
                 {
                 layout = EConfirmationQueryLayout;
                 label = "对话框中显示的文字";
                 };
             }
         };
     }
        

此类对话框可以有声音提示,由NewL的const TTone& aTone参数指定,可能的值如下:

Code:

enum TTone {
     /// No tone is played 
     ENoTone = 0,         
     /// A confirmation tone is played 
     EConfirmationTone = EAvkonSIDConfirmationTone, 
     /// A warning tone is played 
     EWarningTone = EAvkonSIDWarningTone,       
     /// An error tone is played   
     EErrorTone = EAvkonSIDErrorTone          
     };
        

通过定义不同的询问对话框资源,可实现不同的询问对话框,如让用户输入文字的询问对话框资源定义如下:

Code:

RESOURCE DIALOG R_RESOURCE_DATA_QUERY
   {
   flags = EGeneralQueryFlags;
   buttons = R_AVKON_SOFTKEYS_OK_CANCEL;   //CBA按钮显示“确定”和“取消”
   items =
       {
       DLG_LINE
           {
           type = EAknCtQuery;
           id = EGeneralQuery;
           control = AVKON_DATA_QUERY   //表示这是data询问对话框,需要用户输入内容
               {
               layout = EDataLayout;
               label = "提示内容";
               control = EDWIN
                   {
                   flags = EEikEdwinNoHorizScrolling | EEikEdwinResizable;
                   width = 30;
                   lines = 2;
                   maxlength = 159;
                   };
               };
           }
       };
   }    
        

使用方法:

Code:

TBuf<128> msg;
 CAknTextQueryDialog* dlg = new (ELeave) CAknTextQueryDialog(msg,CAknQueryDialog::ENoTone);
   TInt ret = dlg->ExecuteLD(R_RESOURCE_DATA_QUERY);
        

用户输入内容后按“确定”,内容就存储到msg中,函数返回非0;按“取消”,函数返回0。

这里用到的类是CAknQueryDialog的子类CAknTextQueryDialog。

CAknQueryDialog的子类有:

Code:

CAknFloatingPointQueryDialog   //This class should be used when user is reguest to enter a flotaing point number
   CAknFixedPointQueryDialog      //...
   CAknDurationQueryDialog        //This class should be used when user is reguest to enter duration
   CAknIpAddressQueryDialog       //This class should be used when user is reguest to enter IP address,@since 2.1
   CAknMultiLineDataQueryDialog   //Query Dialog with data input on more than one line (2 lines at the moment)
                 Create using NewL methods and passing parameters as appropriate.
                 Attention: When deriving from this class, you must call SetDataL during 
                 second phase construction.
   CAknMultiLineIpQueryDialog     //...
   CAknNumberQueryDialog          //This class should be used when user is reguest to enter number
   CAknTextQueryDialog            //This class should be used when user is reguest to enter plain text, secret text, phonenumber or PIN-code
 CAknTimeQueryDialog            //This class should be used when user is reguest to enter time or date
        

使用不同的类,资源文件会有所不同。

另外,在资源中定义EDWIN时,可指定输入发,如:

Code:

control = EDWIN
   {
     flags = EEikEdwinNoHorizScrolling | EEikEdwinResizable;
     width = 11;
     lines = 1;
     maxlength = 11;
  avkon_flags = EAknEditorFlagFixedCase | 
         EAknEditorFlagNoT9 | EAknEditorFlagSupressShiftMenu;   //EAknEditorFlagSupressShiftMenu屏蔽切换输入法键
  allowed_input_modes = EAknEditorNumericInputMode;
  default_input_mode = EAknEditorNumericInputMode;
  numeric_keymap = EAknEditorPlainNumberModeKeymap;
   };
        

以上写法表示默认输入法为数字,并且屏蔽了输入法切换键,即不能通过输入法切换键来切换输入法。

6、编辑框

编辑框使用的类:

CEikGlobalTextEditor

头文件:eikgted.h

使用方法:

Code:

CEikGlobalTextEditor* iGKeyEd;
 TBuf<128> iKeyText;
 TResourceReader reader;
   iCoeEnv->CreateResourceReaderLC( reader, R_RESOURCE_EDITOR );   //从资源文件构造编辑框,资源见下面的定义
   iGKeyEd = new ( ELeave ) CEikGlobalTextEditor;
   iGKeyEd->SetContainerWindowL( *this );
   iGKeyEd->ConstructFromResourceL( reader );
   CleanupStack::PopAndDestroy();   // Resource reader

 //设置编辑框的初始文本和位置,编辑框大小在资源中定义
 TBuf<32> buf;
 buf.Copy(_L("demo"));
 iGKeyEd->SetTextL(&buf);
 iGKeyEd->SetExtent( TPoint(5,2), iGKeyEd->MinimumSize() );
 iGKeyEd->SetFocus(ETrue);
// iGKeyEd->SetReadOnly(ETrue);   //设置编辑框为只读
 
 //使文字居中
   CParaFormat      paraFormat; 
   TParaFormatMask paraFormatMask;
   paraFormatMask.SetAttrib( EAttAlignment );     // set mask
   paraFormat.iHorizontalAlignment = CParaFormat::ECenterAlign;
   iGKeyEd->ApplyParaFormatL( &paraFormat, paraFormatMask );
   
   iGKeyEd->GetText(iKeyText); //获取编辑框中的内容,保存到iKeyText中

 RESOURCE GTXTED R_RESOURCE_EDITOR   //编辑框资源   
   {
     flags = EAknEditorFlagDefault;
     width = 53;
     height = 16;
     numlines = 1;
     textlimit= 1;
     fontcontrolflags = EGulFontControlAll;
     fontnameflags = EGulNoSymbolFonts;

//这里也可设置输入法
//   avkon_flags = EAknEditorFlagFixedCase | 
                                   EAknEditorFlagNoT9 | EAknEditorFlagSupressShiftMenu;   //EAknEditorFlagSupressShiftMenu屏蔽切换输入法键
//     allowed_input_modes = EAknEditorNumericInputMode;
//     default_input_mode = EAknEditorNumericInputMode;
//     numeric_keymap = EAknEditorPlainNumberModeKeymap;   
   }
        

注意,要使编辑框正常显示,记得更改container的CountComponentControls和ComponentControl函数,正确处理控件数目和编辑框指针。另外,要使编辑框能正常接收按键事件,要显示调用编辑框的OfferKeyEventL函数,如下:

Code:

TKeyResponse CMobileGuardSetKeyContainer::OfferKeyEventL( const TKeyEvent& aKeyEvent, TEventCode aType )
 {
     return iGKeyEd->OfferKeyEventL( aKeyEvent, aType );
 }
        

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