各种提示、输入对话框的使用

 

by  bodybo

http://discussion.forum.nokia.com/forum/showthread.php?t=105774

 

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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