在Android层实现触摸屏校验

核心提示：static int registerNativeMethods(JNIEnv* env, const char* className,JNINativeMethod* gMethods, int numMethods){jclass clazz;clazz = env->FindClass(className)

static int registerNativeMethods(JNIEnv* env, const char* className,

JNINativeMethod* gMethods, int numMethods)

{

jclass clazz;

clazz = env->FindClass(className);

if (clazz == NULL) {

LOGE("Native registration unable to find class '%s'", className);

return JNI_FALSE;

}

if (env->RegisterNatives(clazz, gMethods, numMethods) < 0) {

LOGE("RegisterNatives failed for '%s'", className);

return JNI_FALSE;

}

return JNI_TRUE;

}

/*

* Register native methods for all classes we know about.

*

* returns JNI_TRUE on success.

*/

static int registerNatives(JNIEnv* env)

{

if (!registerNativeMethods(env, classPathName,

methods, sizeof(methods) / sizeof(methods[0]))) {

return JNI_FALSE;

}

return JNI_TRUE;

}

typedef union {

JNIEnv* env;

void* venv;

} UnionJNIEnvToVoid;

jint JNI_OnLoad(JavaVM* vm, void* reserved)

{

UnionJNIEnvToVoid uenv;

uenv.venv = NULL;

jint result = -1;

JNIEnv* env = NULL;

LOGI("JNI_OnLoad");

if (vm->GetEnv(&uenv.venv, JNI_VERSION_1_4) != JNI_OK) {

LOGE("ERROR: GetEnv failed");

goto bail;

}

env = uenv.env;

if (registerNatives(env) != JNI_TRUE) {

LOGE("ERROR: registerNatives failed");

goto bail;

}

result = JNI_VERSION_1_4;

bail:

return result;

}