- 开发伙伴平台：
S60 3rd Edition
- 详细描述
S60应用程序在前台时，可以设置导航条显示自定义图标或文本。
首先，我们要获得一个状态栏的引用。然后可以从中获得导航栏的引用。应用程序可以使用CAknNavigationDecorator类生成一个基于文本的Navi decorator对象。最后这个对象需要添加到导航栏中以便开始显示：
//------------------------------------------------------------------------------ CAknNavigationControlContainer* iNaviPane = 0; CAknNavigationDecorator* iNaviDecorator = 0; //Get the reference of the status pane CEikStatusPane *statusPane = iEikonEnv->AppUiFactory()->StatusPane(); if ( statusPane ) { //Get the reference of the navi pane iNaviPane=static_cast<CAknNavigationControlContainer*>(statusPane->ControlL( TUid::Uid(EEikStatusPaneUidNavi)) ); //Create a Navi decorator object iNaviDecorator= iNaviPane->CreateEditorIndicatorContainerL(); //Get the reference of the indicator container inside the NaviDecorator CAknIndicatorContainer* indiContainer = static_cast<CAknIndicatorContainer*>(iNaviDecorator->DecoratedControl()); if ( indiContainer && CEikStatusPaneBase::Current() ) { TBuf<32> msgSize; msgSize.Append(_L("Test")); // Text to be displayed indiContainer->SetIndicatorValueL( TUid::Uid( EAknNaviPaneEditorIndicatorMessageLength ), msgSize ); indiContainer->SetIndicatorState( TUid::Uid( EAknNaviPaneEditorIndicatorMessageLength ), EAknIndicatorStateOn); } //Push the object onto the navi pane. iNaviPane->PushL( *iNaviDecorator ); } //------------------------------------------------------------------------------
下面的这个示例代码，演示了如何在导航栏中显示一个图标：
//------------------------------------------------------------------------------ CFbsBitmap* bitmap = NULL; CFbsBitmap* mask = NULL; CEikStatusPane* statusPane = iEikonEnv->AppUiFactory()->StatusPane(); CAknNavigationControlContainer* naviPane = (CAknNavigationControlContainer*)statusPane->ControlL( TUid::Uid(EEikStatusPaneUidNavi)); // Create an icon AknIconUtils::CreateIconLC (bitmap, mask, KIconFile, EMbmCarsvgCircle, EMbmCarsvgCircle_mask); //KIconFile is the .mif file TSize size(30,30); AknIconUtils::SetSize(bitmap, size); // Sets the size of the extracted image //Create a Navi Decorator encapsulation for the image. CAknNavigationDecorator* naviDecorator = naviPane->CreateNavigationImageL(bitmap, mask); //Push the image onto the navi pane. naviPane->PushL(*naviDecorator); //------------------------------------------------------------------------------
需要的头文件及库文件有：
#include <aknnavi.h> // for CAknNavigationControlContainer #include <eikspane.h> // for CEikStatusPane #include <aknnavide.h> // for CAknNavigationDecorator #include <akniconutils.h> // for AknIconUtils #include <aknindicatorcontainer.h> // for CAknIndicatorContainer LIBRARY aknicon.lib LIBRARY fbscli.lib LIBRARY avkon.lib
注意：程序在前台时这些导航栏上的文字和图标才得以显现，但手机待机时却不会处理。