标签：quick-cocos2d-x 输入框 ios处理 cocos2dactivity
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
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
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;
}
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 --;
}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;
}
}
}
}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。
标签：quick-cocos2d-x 输入框 ios处理 cocos2dactivity
原文地址：http://blog.csdn.net/helius_sun/article/details/42271949
