#include "Provider.h"
#include <android/log.h>
extern JNIEnv* jniEnv;
jclass TestProvider;
jobject mTestProvider;
jmethodID getTime;
jmethodID sayHello;
int GetProviderInstance(jclass obj_class);
/**
* 初始化 类、对象、方法
*/
int InitProvider() {
__android_log_print(ANDROID_LOG_INFO, "JNIMsg" , "InitProvider Begin 1" );
if (jniEnv == NULL) {
return 0;
}
if (TestProvider == NULL) {
TestProvider = (*jniEnv)->FindClass(jniEnv, "com/duicky/TestProvider" );
if (TestProvider == NULL){
return -1;
}
__android_log_print(ANDROID_LOG_INFO, "JNIMsg" , "InitProvider Begin 2 ok" );
}
if (mTestProvider == NULL) {
if (GetProviderInstance(TestProvider) != 1) {
(*jniEnv)->DeleteLocalRef(jniEnv, TestProvider);
return -1;
}
__android_log_print(ANDROID_LOG_INFO, "JNIMsg" , "InitProvider Begin 3 ok" );
}
if (getTime == NULL) {
getTime = (*jniEnv)->GetStaticMethodID(jniEnv, TestProvider, "getTime" , "()Ljava/lang/String;" );
if (getTime == NULL) {
(*jniEnv)->DeleteLocalRef(jniEnv, TestProvider);
(*jniEnv)->DeleteLocalRef(jniEnv, mTestProvider);
return -2;
}
__android_log_print(ANDROID_LOG_INFO, "JNIMsg" , "InitProvider Begin 4 ok" );
}
if (sayHello == NULL) {
sayHello = (*jniEnv)->GetMethodID(jniEnv, TestProvider, "sayHello" , "(Ljava/lang/String;)V" );
if (sayHello == NULL) {
(*jniEnv)->DeleteLocalRef(jniEnv, TestProvider);
(*jniEnv)->DeleteLocalRef(jniEnv, mTestProvider);
(*jniEnv)->DeleteLocalRef(jniEnv, getTime);
return -3;
}
__android_log_print(ANDROID_LOG_INFO, "JNIMsg" , "InitProvider Begin 5 ok" );
}
__android_log_print(ANDROID_LOG_INFO, "JNIMsg" , "InitProvider Begin 6" );
return 1;
}
int GetProviderInstance(jclass obj_class) {
if (obj_class == NULL) {
return 0;
}
jmethodID construction_id = (*jniEnv)->GetMethodID(jniEnv, obj_class,
"<init>" , "()V" );
if (construction_id == 0) {
return -1;
}
mTestProvider = (*jniEnv)->NewObject(jniEnv, obj_class,
construction_id);
if (mTestProvider == NULL) {
return -2;
}
return 1;
}
/**
* 获取时间 ---- 调用 Java 方法
*/
void GetTime() {
if (TestProvider == NULL || getTime == NULL) {
int result = InitProvider();
if (result != 1) {
return ;
}
}
jstring jstr = NULL;
char * cstr = NULL;
__android_log_print(ANDROID_LOG_INFO, "JNIMsg" , "GetTime Begin" );
jstr = (*jniEnv)->CallStaticObjectMethod(jniEnv, TestProvider, getTime);
cstr = ( char *) (*jniEnv)->GetStringUTFChars(jniEnv,jstr, 0);
__android_log_print(ANDROID_LOG_INFO, "JNIMsg" , "Success Get Time from Java , Value = %s" ,cstr );
__android_log_print(ANDROID_LOG_INFO, "JNIMsg" , "GetTime End" );
(*jniEnv)->ReleaseStringUTFChars(jniEnv, jstr, cstr);
(*jniEnv)->DeleteLocalRef(jniEnv, jstr);
}
/**
* SayHello ---- 调用 Java 方法
*/
void SayHello() {
if (TestProvider == NULL || mTestProvider == NULL || sayHello == NULL) {
int result = InitProvider() ;
if (result != 1) {
return ;
}
}
jstring jstrMSG = NULL;
jstrMSG =(*jniEnv)->NewStringUTF(jniEnv, "Hi,I'm From C" );
__android_log_print(ANDROID_LOG_INFO, "JNIMsg" , "SayHello Begin" );
(*jniEnv)->CallVoidMethod(jniEnv, mTestProvider, sayHello,jstrMSG);
__android_log_print(ANDROID_LOG_INFO, "JNIMsg" , "SayHello End" );
(*jniEnv)->DeleteLocalRef(jniEnv, jstrMSG);
}
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