On Wednesday, May 22, 2013 2:42:30 PM UTC-5, Ishan Sharma wrote:
>
> Hello!
>
> I have been reading Android architecture for some time and have some
> questions pertaining to the native libraries.
> a) Are the native libraries used by the Application Framework?
>
Yes.
>
> b) There are some libraries like media framework which provides media
> codecs etc. Does this mean that when I use the Android API (core
> libraries) to play media files, the API interacts with the media framework
> in the native library.
>
Most likely. Here is code for playing a media file:
/**
* Starts or resumes playback. If playback had previously been paused,
* playback will continue from where it was paused. If playback had
* been stopped, or never started before, playback will start at the
* beginning.
*
* @throws IllegalStateException if it is called in an invalid state
*/
public void start() throws IllegalStateException {
stayAwake(true);
_start();
}
private native void _start() throws IllegalStateException;
As you can see, the code calls a native function ( _start )
>
> c) Is NDK the only way I can use the native libraries?
>
No. You can use the Java SDK, which uses the native libraries indirectly.
Thanks.
>
> Thanks
>
>
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