Cocos2d-x实现Android的Toast功能
来源：程序员人生 发布时间：2014-11-15 01:40:41 阅读次数：2160次
1、Toast
Android的Toast是1个View视图，快速为用户显示少许的信息。主要用于1些提示和帮助。本文实现了Toast最基本的操作能，
代码以下：
//PacToast.h
#include "cocos2d.h"
#include "cocos-ext.h"
#include "ui/CocosGUI.h"
USING_NS_CC;
USING_NS_CC_EXT;
using namespace ui;
class PacToast : public LayerColor
{
public:
static void makeText(Node* node,const std::string& msg,const float& time);//静态函数，方便类直接调用
void removeToast(Node* node);
};
//PacToast
#include "PacToast.h"
void PacToast::makeText(cocos2d::Node *node, const std::string &msg, const float &time)
{
Size visibleSize = Director::getInstance()->getVisibleSize();
Vec2 origin = Director::getInstance()->getVisibleOrigin();
auto pLabel = Label::createWithSystemFont(msg.c_str(), "Arial", 30);
pLabel->setColor(Color3B::WHITE);
pLabel->ignoreAnchorPointForPosition(false);
pLabel->setAnchorPoint(Vec2::ANCHOR_MIDDLE);
auto ly = LayerColor::create(Color4B(130,120,120,255));
ly->ignoreAnchorPointForPosition(false);
ly->setAnchorPoint(Vec2::ANCHOR_MIDDLE);
ly->setContentSize(pLabel->getContentSize() + Size(20,15));
node->addChild(ly);
node->addChild(pLabel);
ly->setPosition(Vec2(visibleSize.width/2,-pLabel->getContentSize().height));
pLabel->setPosition(ly->getPosition());
auto seq1 = Sequence::create(FadeIn::create(time/5), DelayTime::create(time/5*1.5),FadeOut::create(time/5*2.5),CallFuncN::create(ly,callfuncN_selector(PacToast::removeToast)),nullptr);
auto seq2 = Sequence::create(EaseSineIn::create(MoveBy::create(time/5, Vec2(0,200))),DelayTime::create(time/5*2),EaseSineOut::create(MoveBy::create(time/3, Vec2(0,⑵00))), nullptr);
auto spawn = Spawn::create(seq1, seq2, nullptr);
auto action = Repeat::create(spawn,1);
ly->setOpacity(0);
pLabel->setOpacity(0);
ly->runAction(action);
pLabel->runAction(action->clone());
}
void PacToast::removeToast(Node* node)
{
log("node = %s",node->getDescription().c_str());
this->removeFromParentAndCleanup(true);
}
2、使用代码
void HelloWorld::menuCloseCallback(Ref* pSender)
{
#if (CC_TARGET_PLATFORM == CC_PLATFORM_WP8) || (CC_TARGET_PLATFORM == CC_PLATFORM_WINRT)
MessageBox("You pressed the close button. Windows Store Apps do not implement a close button.","Alert");
return;
#endif
#if (CC_TARGET_PLATFORM == CC_PLATFORM_IOS)
PacToast::makeText(this, "我是Toast！", 2.5f);
#endif
}
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