I'm trying to create an app, where at one point, uses native OS functions depending on the mobile platform. For instance, when a user is using iOS, and they tap the 'Email' button, then a UIAlertView will pop up. And so on and so forth for Android, Blackberry, Windows8/8Phone.
I want to be able to write all the code in MonoDevelop (don't need to access code from XCode or Eclipse projects). I've added the proper code for iOS so far, and laid the framework for the other platforms. Hopefully there is a way for the compiler to know that this code is not C#, and will run natively on the platform indicated... So does anyone know if there is a way to basically do this?:
#if UNITY_IPHONE
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:#"Email Us"
message:#"Would you like to send us an email?"
delegate:self
cancelButtonTitle:#"OK"
otherButtonTitles:nil];
[alert show];
#endif
#if UNITY_ANDROID
#endif
#if UNITY_BLACKBERRY
#endif
#if UNITY_WINRT // windows 8, or windows 8 phone
#endif
Looks like you can develop some of it in MonoDevelop. So for the iOS, you can throw some source files in your Assets/Plugins/iOS folder and they will get included as plugins (See http://docs.unity3d.com/Manual/PluginsForIOS.html).
Unfortunately, for Android, your Java files need to be compiled in to jar files (See http://docs.unity3d.com/Manual/PluginsForAndroid.html). So you won't be able to do it all in MonoDevelop.
Though if you really wanted to get fancy, you could probably put your java files in your plugins folder and when you are done making edits in MonoDevelop, you could execute a custom script (Maybe an ant script) that compiles the files in that directory for you.
Related
I have an Android native library (C++ code base) called:
libserverapp.so
And I cannot get the Android build to find it:
"DllNotFoundException: serverapp"
I am using an internal build system, but when I parse the output of the build process, I can see many calls of the form:
android-ndk/toolchains/arm-linux-androideabi-4.6/prebuilt/windows/bin/arm-linux-androideabi-g++.exe -march=armv7-a
After building my Android app, I inspect the resulting APK (renaming to .zip and extracting), and can see my library file here:
lib/armeabi-v7a/libserverapp.so
I can confirm that "ARMv7" is the target architecture in the Android Player settings, and I access the library, in C#, via:
[DllImport("serverapp", CallingConvention = CallingConvention.Cdecl)]
private static extern void run_sim(StringBuilder matchInput, StringBuilder results, int randomSeed);
I have built a Windows DLL of the C++ code, to use in the Editor, and everything works great. However, when I move to Android, the .so cannot be found. The import settings for libserverapp.so are:
Platform: Android; CPU: ARMv7; Path: Assets/Plugins/Android/libserverapp.so; Type: Native
Given that the final APK includes the .so where I expect it to be (lib/armeabi-v7a/), I assume my Unity settings are correct? Also, I am not using IL2CPP for the Android build.
Finally, when I do an object dump of the library file (using arm-linux-androideabi-objdump.exe), the file format of the library file is "elf32-littlearm".
I feel that the issue here is simply finding the .so, not the functionality within it. Any ideas on what's going on here?
Thanks!
I ended up solving the problem. I mentioned that was using an internal build system. Well, there seems to be a bug in it. I ported things over to official Android NDK makefiles, and then it "just worked". So in this case, the library could be found, but its contents weren't valid.
I have two ane file for video recorder. One is for android and another is for ios device. Both have different package name and methods.
Now, i import both Native Extension in single project. And detect ios and android device following way:
if(Capabilities.version.indexOf('IOS') > -1) //for ios device
And
if(Capabilities.version.indexOf('AND') > -1) //for android device
And create object for each class. Now when i run that it gives error for another ane class not found.
Like Suppose i check in ios then gives error for android ane file class, Event not found. same for android.
If you have an ANE that only supports Android it won't be available at all when run in Ios (same is true for Ios). If it has a default implementation its classes will be available but if it doesn't then its classes will just not exist in that scope and error will be thrown if you try to reference them. When using ANE that only offer one platform implementation those ANE have to be used only when compiling for that platform. The way you can switch between ANEs easily is by using CONFIG constants.
EDIT: Defining constants. Right Click project and choose "properties", in "Actionscript compiler" add as many config lines as you see fit, for example:
-define=CONFIG::ANDROID,false
-define=CONFIG::IOS,false
Now wrap all code (including import statements) referencing the Android ANE and the IOS ANE with:
CONFIG::ANDROID
{
//android code here
}
CONFIG::IOS
{
//ios code here
}
Now your 2 config variables are set to false so no code in between "CONFIG::ANDROID" or "CONFIG::IOS" will be compiled with your app. Now if in "actionscript compiler" you change:
-define=CONFIG::ANDROID,true
All code that is in between "CONFIG::ANDROID" will be compiled (you can use "CONFIG::ANDROID" anywhere in your code as many times as you want).
So before compiling set one config to true and make sure the other is set to false and the right code for the right platform will be compiled.
Capabilities.version will tell you: "Specifies the Flash Player or Adobe® AIR® platform and version information." and not the OS version you are running on.
See here http://help.adobe.com/en_US/FlashPlatform/reference/actionscript/3/flash/system/Capabilities.html#version
You need to use Capabilities.os instead
http://help.adobe.com/en_US/FlashPlatform/reference/actionscript/3/flash/system/Capabilities.html#os
I am using getline function and compiling using ndk but i am getting error :
'getline' was not declared in this scope
is this error due to limitations of armeabi-v7a or due to glib?How can it be resolved for the same function.
I have already #define _GNU_SOURCE before <stdio.h>
In general, when you encounter such an error, you go to your NDK directory and user either Midnight Commander (Linux) or Far Manager (Windows, Linux+Wine) to search the files (file mask: *.h) for your function, getline in this case. You will get a screenful of search results, and it's up to you to #include the right file.
Once in a while your function will not be found; in this case you search the 'net for a place where you can borrow the source.
Sometimes the function in the code being ported has just no meaning, e.g. if the function reads a line from stdin but the program going to invoke it is not a command-line utility, there is a problem.
Most likely, the source that you port #define-s switches for Linux, Mac (Darwin) and Windows, you have to choose the right configuration to derive the Android configuration from (and probably the Mac one will be the best).
I've been trying to make the HelloLua example to work in Android. It works if the hello.lua is not in compiled form using luac. But if I compile the hello.lua and upload it in my Android phone, it just gives me a black screen. Can anyone help me out in this?
This is the code in the AppDelegate::applicationDidFinishLaunching()
#if (CC_TARGET_PLATFORM == CC_PLATFORM_ANDROID)
CCString* pstrFileContent = CCString::createWithContentsOfFile("hello.lua");
if (pstrFileContent)
{
pEngine->executeString(pstrFileContent->getCString());
}
#else
std::string path = CCFileUtils::sharedFileUtils()->fullPathForFilename("hello.lua");
pEngine->addSearchPath(path.substr(0, path.find_last_of("/")).c_str());
pEngine->executeScriptFile(path_c_str());
#endif
Seems that compiled lua works when I'm running in Windows but not in Android.
The man page for luac says that "Precompiled chunks are not portable across different architectures".
I want to compile this program for Android and see it run on my phone:
#include "Hello World.h"
using namespace codewerks;
//=============================================
// Main Loop
//=============================================
int main(int argc, char* argv[])
{
Print(std::string("Hello World!"));
}
Where do I start? Can I compile this with GCC? The NDK seems focused on Java. Thank you.
This is now possible with the latest NDK. You will need an emulator or phone running Android 2.3 to try it, but the NativeActivity documentation has a complete example.
Unfortunately it is somewhat more complicated than a simple "hello world" example, and "main" is spelled "android_main". You still need to worry about your application life cycle as you do in Java, and the only real way to draw to the screen is to use OpenGL ES. It seems to be designed for writing games for Android.
Build as executable. (BUILD_EXECUTABLE)
Copy the executable to sdcard. (adb push)
Go to android shell. (adb shell)
Change the permission of the executable. (chmod 777)
Run the executable. (./out)
You will see the printed result on the console. (happy?)