Help needed in creating Native GUI based android application (No JAVA)

[Manoj kumar]

Dear all,

Is it possible to create a native application having GUI with out using Java?

I wanted the following UI components to be shown in my native app. Basically I am trying to create a video player view.

1. Buttons and its event implementations
2. Surface View

Please suggest me on this.

Thanks & Regards,
Manoj.

[NoAngel]

I tried it many times. You can't do it using documented NDK APIs.
If You want to implement a part of Your native activity app, using Android View, You may create this view on Java, then make app Activity as subclass of native activity.
Then call startActivity() for your Android View, when You done, call finish(), and continue run in native activity.
I dont know any way to run native activity and Android View simultaneously.
If You want sample code download Tegra SDK, install and check samples folder.

2014年7月24日木曜日 16時16分21秒 UTC+9 Manoj kumar:

[Manoj kumar]

Thanks NoAngel.

One more query...can we create Native Window or surface without using Native Activity and make it executable?

[W. Boeke]

Hi Manoj,

I don't agree with NoAngel, because it is perfectly doable to create a GUI without any java. I built a real GUI toolkit plus demo's, see http://members.chello.nl/w.boeke/ct-gui/index.html. You can use it for Android and for Linux, which is convenient because Linux enables a fast edit-compile-test cycle. If you only need some buttens, then maybe this toolkit is a bit of overkill though.

[Glenn Kasten]

For the simplest applications with very little interaction with the rest of the platform,

it is possible ... see https://developer.android.com/tools/sdk/ndk/index.html

and search for "native activity". Also read the example code here:

http://developer.android.com/reference/android/app/NativeActivity.html

However, for most applications, we recommend you write the application

mostly in Java using SDK, with JNI calling to your native code only where you need it.

Typically this is for performance-sensitive code or to use your existing native code.

[Manoj kumar]

Hi Boeke,

Thanks a lot for the help. This is what I am looking for. Great tutorial for beginners!

[Manoj kumar]

Hi Boeke,

Is there any way to send the data using command line to native activity.

For Java activity, I know how to do it (am start -n <component> -e "key" "value"). Similarly I would like to send some data to native activity. And how to receive the data in Native Activity? if possible can you please tell me.

Thanks & Regards,
Manoj.

On Friday, 25 July 2014 15:57:55 UTC+5:30, W. Boeke wrote: