mirror of
https://github.com/android/ndk-samples
synced 2025-11-05 06:55:52 +08:00
45 lines
1.4 KiB
C++
45 lines
1.4 KiB
C++
/*
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* Copyright (C) 2016 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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*/
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#include <base/macros.h>
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#include <jni.h>
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#include <string>
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jstring StringFromJni(JNIEnv* env, jobject) {
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std::string hello = "Hello from JNI.";
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return env->NewStringUTF(hello.c_str());
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}
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extern "C" JNIEXPORT jint JNI_OnLoad(JavaVM* _Nonnull vm, void* _Nullable) {
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JNIEnv* env;
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if (vm->GetEnv(reinterpret_cast<void**>(&env), JNI_VERSION_1_6) != JNI_OK) {
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return JNI_ERR;
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}
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jclass c = env->FindClass("com/example/hellojni/HelloJni");
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if (c == nullptr) return JNI_ERR;
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static const JNINativeMethod methods[] = {
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{"stringFromJNI", "()Ljava/lang/String;",
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reinterpret_cast<void*>(StringFromJni)},
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};
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int rc = env->RegisterNatives(c, methods, arraysize(methods));
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if (rc != JNI_OK) return rc;
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return JNI_VERSION_1_6;
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}
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