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android type wrapper

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ekibun
2020-08-16 20:05:53 +08:00
parent 0ba5b045fa
commit 7c1c7ceee9
27 changed files with 552 additions and 190 deletions
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62
android/src/main/jni/jni_helper.hpp Normal file
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/*
* @Description:
* @Author: ekibun
* @Date: 2020-08-16 13:20:03
* @LastEditors: ekibun
* @LastEditTime: 2020-08-16 17:56:52
*/
#include <jni.h>
#include <map>
jclass jniInstanceOf(JNIEnv *env, jobject obj, const char *className)
{
jclass jclazz = env->FindClass(className);
return env->IsInstanceOf(obj, jclazz) ? jclazz : nullptr;
}
jobjectArray jniToArray(JNIEnv *env, jobject obj)
{
jmethodID mToArray = env->GetMethodID(env->GetObjectClass(obj), "toArray", "()[Ljava/lang/Object;");
return (jobjectArray)env->CallObjectMethod(obj, mToArray);
}
jobject jniWrapMap(JNIEnv *env, std::map<jobject, jobject> val)
{
jclass class_hashmap = env->FindClass("java/util/HashMap");
jmethodID hashmap_init = env->GetMethodID(class_hashmap, "<init>", "()V");
jobject map = env->NewObject(class_hashmap, hashmap_init);
jmethodID hashMap_put = env->GetMethodID(class_hashmap, "put", "(Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;");
for (auto it = val.begin(); it != val.end(); ++it)
{
env->CallObjectMethod(map, hashMap_put, it->first, it->second);
}
return map;
}
template <typename T>
jobject jniWrapPrimity(JNIEnv *env, T obj);
template <>
jobject jniWrapPrimity(JNIEnv *env, jlong obj)
{
jclass jclazz = env->FindClass("java/lang/Long");
jmethodID jmethod = env->GetMethodID(jclazz, "<init>", "(J)V");
return env->NewObject(jclazz, jmethod, obj);
}
template <>
jobject jniWrapPrimity(JNIEnv *env, jboolean obj)
{
// TODO see https://github.com/flutter/flutter/issues/45066
std::map<jobject, jobject> retMap;
retMap[env->NewStringUTF("__js_boolean__")] = jniWrapPrimity<jlong>(env, (int64_t)obj);
return jniWrapMap(env, retMap);
}
template <>
jobject jniWrapPrimity(JNIEnv *env, jdouble obj)
{
jclass jclazz = env->FindClass("java/lang/Double");
jmethodID jmethod = env->GetMethodID(jclazz, "<init>", "(D)V");
return env->NewObject(jclazz, jmethod, obj);
}