IT博客汇 | [原]Hello,Bada!

[原]Hello,Bada!

lincyang发表于 2011-08-27 14:50:41

为什么要学bada：

现在的移动市场，纷争四起，各大厂商齐发力。目前笑的最从容的当属iPhone和Android。

在移动开发领域混了几年，感觉开发者是最苦的。要学的东西太多了，这么多手机系统，要全掌握并精通，

那简直是不可能的。聪明些的，就会做出选择，也就是所谓的抱大腿，只要你抱对了，日子过得会有滋有味；抱错了，

面临了继续重新做选择。举个现在大家都知道的例子，07年iPhone一出，好多人去学，结果那第一批人成功了；紧接着，

android也在酝酿着，好多人去学，09年android大爆发，这批人也牛了；symbian的无力，现在好多symbian开发者面临

着选择，投入到android还是iPhone，这是个问题。

其实，学习bada有几点好处：

1、这是个抱大腿的机会，如果bada修成正果，这宝也就压对了。

2、学习人家的架构，对自己还是有益的。

3、多交朋友。每个领域都有朋友，积累人脉，日后用得着。

bada简介：

sumsang的智能手机系统，开放而不开源的，用C++作开发语言，IDE是基于Eclipse的。

第一个bada程序，hello bada

开发程序，首先要搭建环境。

去sumsang官网下载吧，http://developer.bada.com/devtools/sdk

8月25日，也就是周五那一天，bada2.0放出来了。我是昨晚知道的，当然是要下载来看看了。

比之前的下载，这次有所不同。之前的版本都是下载安装包，本地安装，而这次是下载个exe，

在线安装。这可苦了我，晚上安装了近7个小时，中途出现各种断网问题，郁闷之极啊。

安装完毕后，一切就齐活了。这让我想起3年前搭symbian程序，那时才叫痛苦呢。

打开ide，如果你熟悉eclipse，一切都是那么熟悉。

下面，是看帮助文档。好东西全在这里面呢。

bada Developer Guide >Application Development Process来到

Creating Your First Application，按照帮助一点一点的创建工程和ui。

下面是我的例子，一个按钮，一个Label，点击按钮会改变label显示的文字为“hello，bada”，

并弹出一个messagebox。做过windows开发的童鞋会感到不陌生。

我的项目是Helloworld，项目会为你自动生成下面的文件：

Helloworld.h

#ifndef _HELLOWORLD_H_
#define _HELLOWORLD_H_

#include <FApp.h>
#include <FBase.h>
#include <FSystem.h>
#include <FUi.h>

/**
 * [Helloworld] application must inherit from Application class
 * which provides basic features necessary to define an application.
 */
class Helloworld :
	public Osp::App::Application,
	public Osp::System::IScreenEventListener
{
public:

	/**
	 * [Helloworld] application must have a factory method that creates an instance of itself.
	 */
	static Osp::App::Application* CreateInstance(void);


public:
	Helloworld();
	~Helloworld();


public:


	// Called when the application is initializing.
	bool OnAppInitializing(Osp::App::AppRegistry& appRegistry);

	// Called when the application is terminating.
	bool OnAppTerminating(Osp::App::AppRegistry& appRegistry, bool forcedTermination = false);


	// Called when the application's frame moves to the top of the screen.
	void OnForeground(void);


	// Called when this application's frame is moved from top of the screen to the background.
	void OnBackground(void);

	// Called when the system memory is not sufficient to run the application any further.
	void OnLowMemory(void);

	// Called when the battery level changes.
	void OnBatteryLevelChanged(Osp::System::BatteryLevel batteryLevel);

	// Called when the screen turns on.
	void OnScreenOn (void);

	// Called when the screen turns off.
	void OnScreenOff (void);
};

#endif

Helloworld.cpp

/**
 * Name        : Helloworld
 * Version     : 
 * Vendor      : linc
 * Description : 
 */


#include "Helloworld.h"
#include "HelloworldForm.h"

using namespace Osp::App;
using namespace Osp::Base;
using namespace Osp::System;
using namespace Osp::Ui;
using namespace Osp::Ui::Controls;

Helloworld::Helloworld()
{
}

Helloworld::~Helloworld()
{
}

Application*
Helloworld::CreateInstance(void)
{
	// Create the instance through the constructor.
	return new Helloworld();
}

bool
Helloworld::OnAppInitializing(AppRegistry& appRegistry)
{
	// TODO:
	// Initialize UI resources and application specific data.
	// The application's permanent data and context can be obtained from the appRegistry.
	//
	// If this method is successful, return true; otherwise, return false.
	// If this method returns false, the application will be terminated.

	// Uncomment the following statement to listen to the screen on/off events.
	//PowerManager::SetScreenEventListener(*this);

	// Create a form
	HelloworldForm *pHelloworldForm = new HelloworldForm();
	pHelloworldForm->Initialize();

	// Add the form to the frame
	Frame *pFrame = GetAppFrame()->GetFrame();
	pFrame->AddControl(*pHelloworldForm);

	// Set the current form
	pFrame->SetCurrentForm(*pHelloworldForm);

	// Draw and Show the form
	pHelloworldForm->Draw();
	pHelloworldForm->Show();

	return true;
}

bool
Helloworld::OnAppTerminating(AppRegistry& appRegistry, bool forcedTermination)
{
	// TODO:
	// Deallocate resources allocated by this application for termination.
	// The application's permanent data and context can be saved via appRegistry.
	return true;
}

void
Helloworld::OnForeground(void)
{
	// TODO:
	// Start or resume drawing when the application is moved to the foreground.
}

void
Helloworld::OnBackground(void)
{
	// TODO:
	// Stop drawing when the application is moved to the background.
}

void
Helloworld::OnLowMemory(void)
{
	// TODO:
	// Free unused resources or close the application.
}

void
Helloworld::OnBatteryLevelChanged(BatteryLevel batteryLevel)
{
	// TODO:
	// Handle any changes in battery level here.
	// Stop using multimedia features(camera, mp3 etc.) if the battery level is CRITICAL.
}

void
Helloworld::OnScreenOn (void)
{
	// TODO:
	// Get the released resources or resume the operations that were paused or stopped in OnScreenOff().
}

void
Helloworld::OnScreenOff (void)
{
	// TODO:
	//  Unless there is a strong reason to do otherwise, release resources (such as 3D, media, and sensors) to allow the device to enter the sleep mode to save the battery.
	// Invoking a lengthy asynchronous method within this listener method can be risky, because it is not guaranteed to invoke a callback before the device enters the sleep mode.
	// Similarly, do not perform lengthy operations in this listener method. Any operation must be a quick one.
}

这里你会初步了解bada程序的生命周期，想必你已经和Android的生命周期作对比了吧？

我提醒一下哦，android的onStop之后就处于不可见对应于bada的OnBackground，剩下的对比就看出来了。

bada也是两阶段构造的，symbian的童鞋，你们熟悉不？

HelloworldEntry.cpp

/**
 * This file contains the bada application entry point.
 */
#include "Helloworld.h"

using namespace Osp::Base;
using namespace Osp::Base::Collection;

#ifdef __cplusplus
extern "C"
{
#endif // __cplusplus

_EXPORT_ int OspMain(int argc, char *pArgv[]);

/**
 * The entry function of bada application called by the operating system.
 */
int
OspMain(int argc, char *pArgv[])
{
	result r = E_SUCCESS;

	AppLog("Application started.");
	ArrayList* pArgs = new ArrayList();
	pArgs->Construct();
	for (int i = 0; i < argc; i++)
		pArgs->Add(*(new String(pArgv[i])));

	r = Osp::App::Application::Execute(Helloworld::CreateInstance, pArgs);
	if (IsFailed(r))
	{
		AppLogException("Application execution failed-[%s].", GetErrorMessage(r));
		r &= 0x0000FFFF;
	}

	pArgs->RemoveAll(true);
	delete pArgs;
	AppLog("Application finished.");

	return static_cast<int>(r);
}
#ifdef __cplusplus
}
#endif // __cplusplus

紧接着就是Form相关的了，这个做windows的又会很熟悉。

HelloworldForm.h

#ifndef _HELLOWORLDFORM_H_
#define _HELLOWORLDFORM_H_

#include <FBase.h>
#include <FUi.h>

class HelloworldForm :
	public Osp::Ui::Controls::Form,
	public Osp::Ui::IActionEventListener,
 	public Osp::Ui::ITouchEventListener
{

// Construction
public:
	HelloworldForm(void);
	virtual ~HelloworldForm(void);
	bool Initialize(void);

// Implementation
protected:
	static const int ID_BUTTON_OK = 101;
	Osp::Ui::Controls::Button *__pButtonOk;
	Osp::Ui::Controls::Label *__pLabel;
public:
	virtual result OnInitializing(void);
	virtual result OnTerminating(void);
	virtual void OnActionPerformed(const Osp::Ui::Control& source, int actionId);

	virtual void OnTouchDoublePressed(const Osp::Ui::Control &source, const Osp::Graphics::Point ¤tPosition, const Osp::Ui::TouchEventInfo &touchInfo);
	virtual void OnTouchFocusIn(const Osp::Ui::Control &source, const Osp::Graphics::Point ¤tPosition, const Osp::Ui::TouchEventInfo &touchInfo);
	virtual void OnTouchFocusOut(const Osp::Ui::Control &source, const Osp::Graphics::Point ¤tPosition, const Osp::Ui::TouchEventInfo &touchInfo);
	virtual void OnTouchLongPressed(const Osp::Ui::Control &source, const Osp::Graphics::Point ¤tPosition, const Osp::Ui::TouchEventInfo &touchInfo);
	virtual void OnTouchMoved(const Osp::Ui::Control &source, const Osp::Graphics::Point ¤tPosition, const Osp::Ui::TouchEventInfo &touchInfo);
	virtual void OnTouchPressed(const Osp::Ui::Control &source, const Osp::Graphics::Point ¤tPosition, const Osp::Ui::TouchEventInfo &touchInfo);
	virtual void OnTouchReleased(const Osp::Ui::Control &source, const Osp::Graphics::Point ¤tPosition, const Osp::Ui::TouchEventInfo &touchInfo);
};

#endif	//_HELLOWORLDFORM_H_

HelloworldForm.cpp

#include "HelloworldForm.h"

using namespace Osp::Base;
using namespace Osp::Ui;
using namespace Osp::Ui::Controls;

HelloworldForm::HelloworldForm(void)
{
}

HelloworldForm::~HelloworldForm(void)
{
}

bool
HelloworldForm::Initialize()
{
	// Construct an XML form
	Construct(L"IDF_HELLOWORLDFORM");

	return true;
}

result
HelloworldForm::OnInitializing(void)
{
	result r = E_SUCCESS;

	// TODO: Add your initialization code here

	// Get a button via resource ID
	__pButtonOk = static_cast<Button *>(GetControl(L"IDC_BUTTON_OK"));
	if (__pButtonOk != null)
	{
		__pButtonOk->AddTouchEventListener(*this);
		__pButtonOk->SetActionId(ID_BUTTON_OK);
		__pButtonOk->AddActionEventListener(*this);
	}
	//Get a label
	__pLabel = static_cast<Label *>(GetControl(L"IDC_LABEL1"));
	return r;
}

result
HelloworldForm::OnTerminating(void)
{
	result r = E_SUCCESS;

	// TODO: Add your termination code here

	return r;
}

void
HelloworldForm::OnActionPerformed(const Osp::Ui::Control& source, int actionId)
{
	switch(actionId)
	{
	case ID_BUTTON_OK:
		{
			AppLog("OK Button is clicked! \n");
			__pLabel->SetText(L"Hello Bada!");
			__pLabel->Draw();
			MessageBox messageBox;
			messageBox.Construct(L"LINC", L"Hello Bada.",
					MSGBOX_STYLE_NONE, 3000);

			// Call ShowAndWait - draw, show itself and process events
			int modalResult = 0;
			messageBox.ShowAndWait(modalResult);

			switch(modalResult)
			{
			case MSGBOX_RESULT_OK:
				// Todo:
				break;

			default:
				break;
			}
		}
		break;
	default:
		break;
	}
}



void
HelloworldForm::OnTouchDoublePressed(const Osp::Ui::Control &source, const Osp::Graphics::Point ¤tPosition, const Osp::Ui::TouchEventInfo &touchInfo)
{
	// TODO: Add your implementation codes here

}

void
HelloworldForm::OnTouchFocusIn(const Osp::Ui::Control &source, const Osp::Graphics::Point ¤tPosition, const Osp::Ui::TouchEventInfo &touchInfo)
{
	// TODO: Add your implementation codes here

}

void
HelloworldForm::OnTouchFocusOut(const Osp::Ui::Control &source, const Osp::Graphics::Point ¤tPosition, const Osp::Ui::TouchEventInfo &touchInfo)
{
	// TODO: Add your implementation codes here

}

void
HelloworldForm::OnTouchLongPressed(const Osp::Ui::Control &source, const Osp::Graphics::Point ¤tPosition, const Osp::Ui::TouchEventInfo &touchInfo)
{
	// TODO: Add your implementation codes here

}

void
HelloworldForm::OnTouchMoved(const Osp::Ui::Control &source, const Osp::Graphics::Point ¤tPosition, const Osp::Ui::TouchEventInfo &touchInfo)
{
	// TODO: Add your implementation codes here

}

void
HelloworldForm::OnTouchPressed(const Osp::Ui::Control &source, const Osp::Graphics::Point ¤tPosition, const Osp::Ui::TouchEventInfo &touchInfo)
{
	// TODO: Add your implementation codes here
	AppLog("OK Button is OnTouchPressed! \n");
	__pLabel->SetText("Hello Bada!");
}

void
HelloworldForm::OnTouchReleased(const Osp::Ui::Control &source, const Osp::Graphics::Point ¤tPosition, const Osp::Ui::TouchEventInfo &touchInfo)
{
	// TODO: Add your implementation codes here

}

下面就是编译调试运行的步骤了，模拟器会自动打开，速度还是很快的，

你点击按钮后，预期的结果就是出现。

很奇怪的是，我第一次运行后，修改一些文件，再编译，运行，提示我模拟器已经加载。

晕了，我只好关闭它然后再开启。

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