Android：
1、在CCImage中添加下面的方法：
//头文件声明略。
cocos2d::CCSize CCImage::getStringSize(const char *text, const char * pFontName, int nSize)
{
JniMethodInfo minfo;
if (! JniHelper::getStaticMethodInfo(minfo, "org/cocos2dx/lib/Cocos2dxBitmap", "getFontSize",
"(Ljava/lang/String;Ljava/lang/String;I)[I"))
{
CCLOG("getStringSize %s %d: error to get methodInfo", __FILE__, __LINE__);
return CCSizeMake(nSize, nSize);
}
jstring jmsg1 = minfo.env->NewStringUTF(text);
jstring jmsg2 = minfo.env->NewStringUTF(pFontName);
jint size=nSize;
jintArray array=(jintArray)minfo.env->CallStaticObjectMethod(minfo.classID,minfo.methodID,jmsg1,jmsg2,size);
jsize len=minfo.env->GetArrayLength(array);
jint* body = minfo.env->GetIntArrayElements(array, 0);
if (body==NULL) {
CCLOG("body %s %d: error to get methodInfo", __FILE__, __LINE__);
return CCSizeMake(nSize, nSize);
}
int width=body[0];
int height=body[1];
//以下的清理工作必不可少 否则会报 ReferenceTable overflow (max=512)
minfo.env->ReleaseIntArrayElements(array, body, 0);
minfo.env->DeleteLocalRef(jmsg1);
minfo.env->DeleteLocalRef(jmsg2);
minfo.env->DeleteLocalRef(array);
minfo.env->DeleteLocalRef(minfo.classID);
return CCSizeMake(width, height);
}
2、在Cocos2dxBitmap类中添加下面的内容：
static String tempFontName="";
static int tempFontSize=0;
private static Paint tmpPaint;
public static int[] getFontSize(String text, final String pFontName, final int pFontSize){
if(tmpPaint==null||tempFontSize!=pFontSize||!tempFontName.equals(pFontName)){
Log.i("cocos2d-x-android", "pFontName =="+pFontName+" pFontSize =="+pFontSize);
tmpPaint= Cocos2dxBitmap.newPaint(pFontName, pFontSize, HORIZONTALALIGN_LEFT);
tempFontName=pFontName;
tempFontSize=pFontSize;
}
int width=(int)tmpPaint.measureText(text);
final FontMetricsInt fm = tmpPaint.getFontMetricsInt();
int height = (int) Math.ceil(fm.bottom - fm.top)+2;
return new int[]{width,height};
}
ios:
CCSize CCImage::getStringSize(const char *text, const char * pFontName, int nSize)
{
NSString * str = [NSString stringWithUTF8String:text];
NSString * fntName = [NSString stringWithUTF8String:pFontName];
CGSize dim, constrainSize;
id font = [UIFont fontWithName:fntName size:nSize];
if (font)
{
dim = _calculateStringSize(str, font, &constrainSize);
}
else
{
if (!font)
{
font = [UIFont systemFontOfSize:nSize];
}
if (font)
{
dim = _calculateStringSize(str, font, &constrainSize);
}
}
return CCSizeMake(dim.width, dim.height);
}