游戏引擎一般提供两种输入框:editBox和textfielttf。editBox比较简单,在ios上效果也还行,但是在android上就比较丑了,每次输入都会悬浮一个小框框。对于游戏来说eidtBox可以满足基本需求,毕竟输入还是少数情况。textfielttf是一种特殊的label,显示效果比较好,但是计算起来比较麻烦,要自己绘制光标,要自己绘制文字,自己计算增加和删除。
这里还是说一下自己实现的一种简陋的支持增加删除的方式吧。其实比较简单,原理就是记录每个字及每个字的位置,然后增加删除的时候既要对字处理也要对位置处理。(这里只针对单行进行说明,多行的还要自己维护高度等信息)。
先来说一下绘制函数,这里用的是自己维护的显示内容contentString
bool CCTextFieldTTFExtend::onDraw(CCTextFieldTTF *pSender) { CCLog("the contentstring in fieldttf extend is %s",contentString.c_str()); //检测是否有删改 pSender->setString(contentString.c_str()); if (once == 1) { once = 0; if (recordPos.size() > 0 && pSender->getContentSize().width - recordPos[recordPos.size()-1].point.x < 0) { //有记录的数据,切操作之后显示的文字内容比记录的要短,说明进行的是删除操作 if (posInList > 1) { float distance = recordPos[posInList-2].point.x - recordPos[posInList-1].point.x; m_pCursorSprite->setPositionX(m_pCursorSprite->getPositionX() + distance/2); pSender->setString(contentString.c_str()); updateDelete(pSender); }else if (posInList== 1){ float distance = 0 - recordPos[posInList-1].point.x; m_pCursorSprite->setPositionX(m_pCursorSprite->getPositionX() + distance/2); pSender->setString(contentString.c_str()); updateDelete(pSender); } return false; } if (recordPos.size() > 0 && pSender->getContentSize().width-recordPos[recordPos.size()-1].point.x > 1 ) { //有记录的数据,切操作之后显示的文字内容比记录的要长,说明进行的是增加操作 float distance = pSender->getContentSize().width - recordPos[recordPos.size()-1].point.x; m_pCursorSprite->setPositionX(m_pCursorSprite->getPositionX() + distance/2); pSender->setString(contentString.c_str()); updateAdd(pSender); return false; }else{ if(recordPos.size() == 0 && pSender->getContentSize().width > 0){ //显现没有记录说明没有文字,现在有记录说明是增加操作 m_pCursorSprite->setPositionX(m_pCursorSprite->getPositionX() + pSender->getContentSize().width/2); updateAdd(pSender); } } } return false; }
删除内容操作:
//删除内容 void CCTextFieldTTFExtend::deleteString(){ if (strcmp(contentString.c_str(),"") && posInList < 1) { return; } //计算删除了几个汉字或字符 int nDeleteLen = 1; while(0x80 == (0xC0 & contentString.at(posInString - nDeleteLen))) { ++nDeleteLen; } string tempNext = contentString.substr(posInString); string tempPrev = contentString.substr(0,posInString-nDeleteLen); contentString = tempPrev + tempNext; posInString -= nDeleteLen; once = 1; }
增加内容操作:
//增加内容 void CCTextFieldTTFExtend::addString(const char *text){ string tempPrev = contentString.substr(0,posInString); string tempNext = contentString.substr(posInString); string tempString = tempPrev + text + tempNext; int addLength = (strlen(tempString.c_str())-strlen(contentString.c_str())); posInString += addLength; contentString = tempString; judgeChines = addLength; CCLog("the contentString is %s",contentString.c_str()); once = 1; }
删除位置操作:
void CCTextFieldTTFExtend::updateDelete(CCTextFieldTTF * pSender){ //销毁足迹 float distance = 0; if (posInList != 0) { distance = recordPos[posInList].point.x - recordPos[posInList-1].point.x; } vector<RecordTTF> temp = recordPos; recordPos.clear(); for (int i = 0; i < posInList-1; ++ i) { recordPos.push_back(temp[i]); } for (int i = posInList; i < temp.size(); ++ i) { temp[i].point.x -= distance; recordPos.push_back(temp[i]); } posInList --; }
添加足迹的操作:
void CCTextFieldTTFExtend::updateAdd(CCTextFieldTTF * pSender){ //原先字段的前部 vector<RecordTTF> temp = recordPos; recordPos.clear(); for (int i = 0; i < posInList; ++ i) { recordPos.push_back(temp[i]); } //现增加的部分 float distance = 0; if (posInList > 0) { RecordTTF local; distance = pSender->getContentSize().width - temp[temp.size()-1].point.x; local.point = CCPoint(temp[posInList-1].point.x += distance,0); CCLog("现在的 %f",local.point.x); local.flag = judgeChines; recordPos.push_back(local); }else{ if(temp.size() < 1){ RecordTTF local; local.point = CCPoint(pSender->getContentSize().width,0); local.flag = judgeChines; recordPos.push_back(local); }else{ RecordTTF local; CCLog("the contentSize is %f",pSender->getContentSize().width); distance = pSender->getContentSize().width - temp[temp.size()-1].point.x; local.point = CCPoint(temp[posInList-1].point.x += distance,0); CCLog("现在的 %f",local.point.x); local.flag = judgeChines; recordPos.push_back(local); } } //原先文字的后部 for (int i = posInList; i < temp.size(); ++ i) { temp[i].point.x += distance; recordPos.push_back(temp[i]); } posInList ++; }
-(void) handleTouchesAfterKeyboardShow { NSArray *subviews = self.subviews; for(UIView* view in subviews) { if([view isKindOfClass:NSClassFromString(@"CustomUITextField")]) { if ([view isFirstResponder]) { [view resignFirstResponder]; return; } } if([view isKindOfClass:NSClassFromString(@"UITextView")]) { if ([view isFirstResponder]) { [view resignFirstResponder]; return; } } } }
原因代码也说的比较清楚了,原先quick只对自己的控件进行了处理,现在你增加一下把系统控件也处理以下。
此外,在做android微信授权登陆的时候出现从cocos2dActivity跳转出去再跳转回来之后所有的cocos2d输入框不显示键盘,跟踪发现启动键盘确实走到
Cocos2dxGLSurfaceView.sHandler = new Handler() { @Override public void handleMessage(final Message msg) { switch (msg.what) { case HANDLER_OPEN_IME_KEYBOARD: Log.i("","接收到启动键盘通知"); if (null != Cocos2dxGLSurfaceView.this.mCocos2dxEditText && Cocos2dxGLSurfaceView.this.mCocos2dxEditText.requestFocus()) { Log.i("","接收到启动键盘通知 开始启动键盘"); Cocos2dxGLSurfaceView.this.mCocos2dxEditText.removeTextChangedListener(Cocos2dxGLSurfaceView.sCocos2dxTextInputWraper); Cocos2dxGLSurfaceView.this.mCocos2dxEditText.setText(""); final String text = (String) msg.obj; Cocos2dxGLSurfaceView.this.mCocos2dxEditText.append(text); Cocos2dxGLSurfaceView.sCocos2dxTextInputWraper.setOriginText(text); Cocos2dxGLSurfaceView.this.mCocos2dxEditText.addTextChangedListener(Cocos2dxGLSurfaceView.sCocos2dxTextInputWraper); final InputMethodManager imm = (InputMethodManager) Cocos2dxGLSurfaceView.mCocos2dxGLSurfaceView.getContext().getSystemService(Context.INPUT_METHOD_SERVICE); imm.showSoftInput(Cocos2dxGLSurfaceView.this.mCocos2dxEditText,0); Log.d("GLSurfaceView","showSoftInput"); } break;
原因是我将微信授权的回调activity也设成了cocos2dActivity。具体是什么造成的没有去深究,将其改为activity,并注意下到底是UIThread还是OpenGLThread,这样的问题就没有了。大部分这种操作都是线程混乱造成的,出现这种类似的情况,多看一下是否是线程的原因。
原文链接:https://www.f2er.com/cocos2dx/345181.html