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Merge pull request #627 from minggo/iss884_cocosdenshion 

fixed #884: make classOfCocos2dxActivity as a global reference
This commit is contained in:
minggo 2011-12-19 00:06:08 -08:00
parent a4e694e5fb 0f5dd0dbb1
commit a08ae8ef12
1 changed files with 48 additions and 21 deletions
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69
CocosDenshion/android/jni/SimpleAudioEngineJni.cpp
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@ -9,7 +9,7 @@ extern "C"
{ {
static JavaVM *gJavaVM = 0; static JavaVM *gJavaVM = 0;
static jclass classOfCocos2dxActivity = 0; static jclass classOfCocos2dxActivity = 0;
JNIEnv *env = 0; static JNIEnv *env = 0;
jint JNI_OnLoad(JavaVM *vm, void *reserved) jint JNI_OnLoad(JavaVM *vm, void *reserved)
{ {
@ -18,34 +18,57 @@ extern "C"
return JNI_VERSION_1_4; return JNI_VERSION_1_4;
} }
// get env and cache it
static void getJNIEnv(void)
{
if (! env)
{
// get jni environment
if (gJavaVM->GetEnv((void**)&env, JNI_VERSION_1_4) != JNI_OK)
{
LOGD("Failed to get the environment using GetEnv()");
}
if (gJavaVM->AttachCurrentThread(&env, 0) < 0)
{
LOGD("Failed to get the environment using AttachCurrentThread()");
}
}
}
// get class and make it a global reference, release it at endJni().
static void getClass(void)
{
if (! classOfCocos2dxActivity)
{
getJNIEnv();
jclass tmpClass = 0;
tmpClass = env->FindClass("org/cocos2dx/lib/Cocos2dxActivity");
if (! tmpClass)
{
LOGD("Failed to find class of org/cocos2dx/lib/Cocos2dxActivity");
}
// make it a global reference
classOfCocos2dxActivity = (jclass)env->NewGlobalRef(tmpClass);
env->DeleteLocalRef(tmpClass);
if (! classOfCocos2dxActivity)
{
LOGD("Failed to new global class of org/cocos2dx/lib/Cocos2dxActivity");
}
}
}
static jmethodID getMethodID(const char *methodName, const char *paramCode) static jmethodID getMethodID(const char *methodName, const char *paramCode)
{ {
jmethodID ret = 0; jmethodID ret = 0;
// get jni environment and java class for Cocos2dxActivity getClass();
if (gJavaVM->GetEnv((void**)&env, JNI_VERSION_1_4) != JNI_OK)
{
LOGD("Failed to get the environment using GetEnv()");
return 0;
}
if (gJavaVM->AttachCurrentThread(&env, 0) < 0)
{
LOGD("Failed to get the environment using AttachCurrentThread()");
return 0;
}
classOfCocos2dxActivity = env->FindClass("org/cocos2dx/lib/Cocos2dxActivity");
if (! classOfCocos2dxActivity)
{
LOGD("Failed to find class of org/cocos2dx/lib/Cocos2dxActivity");
return 0;
}
if (env != 0 && classOfCocos2dxActivity != 0) if (env != 0 && classOfCocos2dxActivity != 0)
{ {
ret = env->GetStaticMethodID(classOfCocos2dxActivity, methodName, paramCode); ret = env->GetStaticMethodID(classOfCocos2dxActivity, methodName, paramCode);
env->DeleteLocalRef(classOfCocos2dxActivity);
} }
if (! ret) if (! ret)
@ -202,6 +225,10 @@ extern "C"
{ {
env->CallStaticVoidMethod(classOfCocos2dxActivity, endMethodID); env->CallStaticVoidMethod(classOfCocos2dxActivity, endMethodID);
} }
// release classOfCocos2dxActivity
env->DeleteGlobalRef(classOfCocos2dxActivity);
classOfCocos2dxActivity = 0;
} }
float getEffectsVolumeJNI() float getEffectsVolumeJNI()