jni_util.h

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// Copyright 2013 The Flutter Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
 
#ifndef FLUTTER_FML_PLATFORM_ANDROID_JNI_UTIL_H_
#define FLUTTER_FML_PLATFORM_ANDROID_JNI_UTIL_H_
 
#include <jni.h>
 
#include <vector>
 
#include "flutter/fml/macros.h"
#include "flutter/fml/platform/android/scoped_java_ref.h"
 
namespace fml {
namespace jni {
 
void InitJavaVM(JavaVM* vm);
 
// Returns a JNI environment for the current thread.
// Attaches the thread to JNI if needed.
JNIEnv* AttachCurrentThread();
 
void DetachFromVM();
 
std::string JavaStringToString(JNIEnv* env, jstring string);
 
ScopedJavaLocalRef<jstring> StringToJavaString(JNIEnv* env,
                                               const std::string& str);
 
std::vector<std::string> StringArrayToVector(JNIEnv* env, jobjectArray jargs);
 
std::vector<std::string> StringListToVector(JNIEnv* env, jobject list);
 
ScopedJavaLocalRef<jobjectArray> VectorToStringArray(
    JNIEnv* env,
    const std::vector<std::string>& vector);
 
ScopedJavaLocalRef<jobjectArray> VectorToBufferArray(
    JNIEnv* env,
    const std::vector<std::vector<uint8_t>>& vector);
 
bool HasException(JNIEnv* env);
 
bool ClearException(JNIEnv* env, bool silent = false);
 
bool CheckException(JNIEnv* env);
std::string GetJavaExceptionInfo(JNIEnv* env, jthrowable java_throwable);
 
}  // namespace jni
}  // namespace fml
 
#endif  // FLUTTER_FML_PLATFORM_ANDROID_JNI_UTIL_H_