PPlatformSubsystem.cpp

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// Copyright 2023 PixoVR Corp. All Rights Reserved.
 
 
#include "PPlatformSubsystem.h"
 
DEFINE_LOG_CATEGORY_STATIC(LogPPlatformSubsystem, Log, All);
 
#define Log(pmt, ...)   UE_LOG(LogPPlatformSubsystem, Log, TEXT(pmt), ##__VA_ARGS__)
#define Warn(pmt, ...)  UE_LOG(LogPPlatformSubsystem, Warning, TEXT(pmt), ##__VA_ARGS__)
#define Error(pmt, ...) UE_LOG(LogPPlatformSubsystem, Error, TEXT(pmt), ##__VA_ARGS__)
#define Fatal(pmt, ...) UE_LOG(LogPPlatformSubsystem, Fatal, TEXT(pmt), ##__VA_ARGS__)
 
UPPlatformSubsystem::UPPlatformSubsystem()
    : UGameInstanceSubsystem()
{
#if PLATFORM_ANDROID
    if (JNIEnv* Env = FAndroidApplication::GetJavaEnv())
    {
        jclass JavaClassClass = Env->FindClass("java/lang/Class");
        jmethodID JavaGetClassNameMethod = Env->GetMethodID(JavaClassClass, "getName", "()Ljava/lang/String;");
        jstring JavaActivityClassID = (jstring)Env->CallObjectMethod(FJavaWrapper::GameActivityClassID, JavaGetClassNameMethod);
        const char* GameActivityClassName = Env->GetStringUTFChars(JavaActivityClassID, 0);
        Log("Assigned Java functions for class %s", GameActivityClassName);
        Env->ReleaseStringUTFChars(JavaActivityClassID, GameActivityClassName);
 
        LaunchApplicationFunction = FJavaWrapper::FindMethod(Env, FJavaWrapper::GameActivityClassID, "AndroidThunkJava_IsPackageInstalled", "(Ljava/lang/String;)Z", false);
        IsApplicationInstalledFunction = FJavaWrapper::FindMethod(Env, FJavaWrapper::GameActivityClassID, "AndroidThunkJava_LaunchPackage", "(Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;)Z", false);
    }
#endif
}
 
bool UPPlatformSubsystem::IsApplicationInstalled(const FString& ApplicationName)
{
    bool bResult = false;
#if PLATFORM_ANDROID
    if (JNIEnv* Env = FAndroidApplication::GetJavaEnv())
    {
        auto PackageNameArg = FJavaHelper::ToJavaString(Env, ApplicationName);
        bResult = FJavaWrapper::CallBooleanMethod(Env, FJavaWrapper::GameActivityThis, FJavaWrapper::AndroidThunkJava_IsPackageInstalled, *PackageNameArg);
    }
 
    Log("UPPlatformSubsystem::IsApplicationInstalledFunction: %d", bResult);
#endif
    return bResult;
}
 
bool UPPlatformSubsystem::LaunchApplication(const FString& ApplicationName, const FString& ExtraKey, const FString& ExtraValue)
{
    bool bResult = false;
#if PLATFORM_ANDROID
    if (JNIEnv* Env = FAndroidApplication::GetJavaEnv())
    {
        auto ApplicationNameArg = FJavaHelper::ToJavaString(Env, ApplicationName);
        auto ExtraKeyArg = FJavaHelper::ToJavaString(Env, ExtraKey);
        auto ExtraValueArg = FJavaHelper::ToJavaString(Env, ExtraValue);
        bResult = FJavaWrapper::CallBooleanMethod(Env, FJavaWrapper::GameActivityThis, FJavaWrapper::AndroidThunkJava_LaunchPackage, *ApplicationNameArg, *ExtraKeyArg, *ExtraValueArg);
    }
 
    Log("UPPlatformSubsystem::LaunchApplication: %s, %s : %s", *ApplicationName, *ExtraKey, *ExtraValue);
#endif
    return bResult;
}
 
 
#undef Fatal
#undef Error
#undef Warn
#undef Log