ZT:http://bbs.tech.ccidnet.com/read.php?tid=678157
symbian 多视图开发
第一步， AppUi 类继承自 CAknViewAppUi。如下所示class AppUi : public CAknViewAppUi, MAknTabObserver
{
......
public: /** * iNaviPane * Not Owned by CsifAppUi object. */ CAknNavigationControlContainer* iNaviPane; /** * iTabGroup * Not Owned by CsifAppUi object. */ CAknTabGroup* iTabGroup; /** * iDecoratedTabGroup * Owned by CsifAppUi object. */ CAknNavigationDecorator* iDecoratedTabGroup;
private: // Data /** * iAppView1, The application view 1 * Not owned by CMultiViewsAppUi object. */ CMultiViewsView1* iAppView1; /** * iAppView2, The application view 2 * Not owned by CMultiViewsAppUi object. */ CMultiViewsView2* iAppView2;
}
第二步， 在 AppUi::ConstructL() 函数中作如下操作
AppUi::ConstructL()
｛
BaseConstructL(EAknEnableSkin);
iAppView1 = CMultiViewsView1::NewL();
iAppView2 = CMultiViewsView2::NewL();
// Transfer ownership to base class
AddViewL( iAppView1 );
AddViewL( iAppView2 );
SetDefaultViewL( *iAppView1 );
｝
第三步，如果要实现 TAB 跳转，则需要在 AppUi::ConstructL() 中填加入下代码：
AppUi::ConstructL()
｛
BaseConstructL(EAknEnableSkin);
CEikStatusPane *sp = StatusPane();
// Fetch pointer to the default navi pane control
iNaviPane = static_cast<CAknNavigationControlContainer*>
( sp->ControlL( TUid::Uid( EEikStatusPaneUidNavi ) ) );
iDecoratedTabGroup = iNaviPane->ResourceDecorator();
if ( iDecoratedTabGroup )
{
iTabGroup = static_cast<CAknTabGroup*>
( iDecoratedTabGroup->DecoratedControl() );
}
iAppView1 = CMultiViewsView1::NewL();
iAppView2 = CMultiViewsView2::NewL();
// Transfer ownership to base class
AddViewL( iAppView1 );
AddViewL( iAppView2 );
SetDefaultViewL( *iAppView1 );
｝
第三步， 处理用户按键，如果是方向键，则切换视图。
TKeyResponse AppUi::HandleKeyEventL(
const TKeyEvent& aKeyEvent, TEventCode aType)
{
if(iTabGroup == NULL)
{
return EKeyWasNotConsumed;
}
//如果按下的是左方向键或右方向键
if(aKeyEvent.iCode==EKeyLeftArrow || aKeyEvent.iCode== EKeyRightArrow)
{
return iTabGroup->OfferKeyEventL(aKeyEvent, aType);
}
else
{
return EKeyWasNotConsumed;
}
｝
第四步， 重载 TabChangedL 方法，这是一个回调函数
void AppUi::TabChangedL(TInt aIndex)
{
ActivateLocalViewL(
TUid::Uid(iTabGroup->TabIdFromIndex(aIndex))
);//激活视图
}
第五步， 视图类继承自 CAknView。 如下所示
class View: public CAknView
｛
......
public: // Functions from base classes from CAknView
/**
* Id
* @return Id Uid value
*/
TUid Id() const;
/**
* HandleCommandL
* From CAknView, takes care of command handling.
* @param aCommand Command to be handled
*/
void HandleCommandL( TInt aCommand );
/**
* HandleSizeChange
* Called by HandleResourceChangeL() from CMultiViewsAppUi when layout
* is changed.
* @param aType Type of resources that have changed
*/
void HandleSizeChange( TInt aType );
/**
* DoActivateL
* From CAknExView, activate an AknView.
* @param aPrevViewId The id of the previous view
* @param aCustomMessageId message identifier
* @param aCustomMessage custom message provided when the view is changed
*/
void DoActivateL( const TVwsViewId& aPrevViewId,
TUid aCustomMessageId,
const TDesC8& aCustomMessage );
/**
* DoDeactivate
* From AknView, deactivate an AknView
* Remove the container class instance from the App UI's stack and
* deletes the instance
*/
void DoDeactivate();
private: // Data
/**
* iContainer,container for this view
* owned by CMultiViewsView1 object.
*/
CMultiViewsContainer1* iContainer;
/** View Identifier **/
TUid iIdentifier;
｝
第六步，实现部分
// -----------------------------------------------------------------------------
// CMultiViewsView1::Id()
// Returns View's ID.
// -----------------------------------------------------------------------------
//
TUid CMultiViewsView1::Id() const
{
return TUid::Uid( EMultiViewsView1Id );
}
// -----------------------------------------------------------------------------
// CMultiViewsView1::DoActivateL()
// Activate an MultiView1
// -----------------------------------------------------------------------------
//
void CMultiViewsView1::DoActivateL( const TVwsViewId& /*aPrevViewId*/,
TUid /*aCustomMessageId*/,
const TDesC8& /*aCustomMessage*/)
{
iContainer = CMultiViewsContainer1::NewL( ClientRect() );
}
// -----------------------------------------------------------------------------
// CMultiViewsView1::DoDeactivate()
// DeActivate an MultiView1
// -----------------------------------------------------------------------------
//
void CMultiViewsView1::DoDeactivate()
{
if ( iContainer )
{
// Remove View1's container form controllStack
AppUi()->RemoveFromStack( iContainer );
delete iContainer;
iContainer = NULL;
}
}
// -----------------------------------------------------------------------------
// CMultiViewsView1::HandleCommandL()
// Takes care of Command handling.
// -----------------------------------------------------------------------------
//
void CMultiViewsView1::HandleCommandL( TInt aCommand )
{
if ( aCommand == EMultiViewsSwitchToView2 )
{
AppUi()->ActivateLocalViewL( TUid::Uid( EMultiViewsView2Id ) );
}
else
{
AppUi()->HandleCommandL( aCommand );
}
}
// -----------------------------------------------------------------------------
// CMultiViewsView1::HandleSizeChange()
// Called by HandleResourceChangeL() from CMultiViewsAppUi when layout is
// changed.
// -----------------------------------------------------------------------------
//
void CMultiViewsView1::HandleSizeChange( TInt aType )
{
if( iContainer )
{
iContainer->HandleResourceChange( aType );
if ( aType==KEikDynamicLayoutVariantSwitch )
{
TRect rect;
AknLayoutUtils::LayoutMetricsRect(AknLayoutUtils::EMainPane, rect);
iContainer->SetRect(rect);
}
}
}
第七步，在资源文件中加入TAB资源
RESOURCE EIK_APP_INFO
{
status_pane = r_multiviewstest_status_pane;
}
RESOURCE STATUS_PANE_APP_MODEL r_multiviewstest_status_pane
{
panes =
{
SPANE_PANE
{
id = EEikStatusPaneUidNavi;
type = EAknCtNaviPane;
resource = r_multiviewstest_navi_decorator;
}
};
}
// r_multiviewstest_navi_decorator
RESOURCE NAVI_DECORATOR r_multiviewstest_navi_decorator
{
type = ENaviDecoratorControlTabGroup;
control = TAB_GROUP
{
tab_width = EAknTabWidthWithTwoTabs; // two tabs
active = 0;
tabs = {
TAB
{
id = EMultiViewsTestView1Tab; // from application hrh
txt = qtn_view1_tab;
},
TAB
{
id = EMultiViewsTestView2Tab;
txt = qtn_view2_tab;
}
};
};
}
第八步，在头文件 multiviews.hrh 中加入枚举值
enum TMultiViewsTestTabViewId
{
EMultiViewsTestView1Tab= 1,
EMultiViewsTestView2Tab
};
转贴自：http://bbs.tech.ccidnet.com/read.php?tid=678157