is it possible to make equalizer android

Question

Doing a little search i realized that to make an equalizer. I need to use C or C++ That would also mean that i have to use the NDK to integrate that with my Java code. The question is, how can i make the C and Java code interact with each other. I don't even know C but i really want that equalizer in my music player. Do you guys know of any good C book which is the best for beginners?

Thanks.

score 7 · Accepted Answer · edited May 23 '17 at 12:02

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There should be no need to use the NDK. There already is an Equalizer-Class in Android, which is also used by the standard Android Music Player. Also, here is an answer on how to make the Sliders

edited May 23 '17 at 12:02

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answered May 16 '11 at 19:57

Lukas Knuth

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is this equalizer class available from 2.2 or only from 2.3.3? – madcoderz May 16 '11 at 20:20
It's API Level 9, so it's available since Android 2.3 – Lukas Knuth May 16 '11 at 20:32
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that's a shame, i want my equalizer to be available from 2.2 How can i achieve that? Using C? – madcoderz May 17 '11 at 09:53
@LukasKnuth can you please help me.. i dont want equalizer but i just want to show graphics of equalizer like bars moving up and down or heart beat like animation..can you help me ? – Swap-IOS-Android Jan 15 '13 at 09:28
@SwapAndroid I'd say the [`Visualizer`-class](http://developer.android.com/reference/android/media/audiofx/Visualizer.html) looks like something you want. – Lukas Knuth Jan 15 '13 at 11:53
@LukasKnuth thank you so much .. i got idea now.. but do you know how can i display in bars ..i found code look like heartbeats but do you know anything for bar.. – Swap-IOS-Android Jan 15 '13 at 11:55
@SwapAndroid depends on the kinds of effects you want. If it's simple, create some Bitmaps and draw them on a [`SurfaceView`](http://developer.android.com/reference/android/view/SurfaceView.html). If you need something more fancy, have a look at [OpenGL ES](http://developer.android.com/guide/topics/graphics/opengl.html) – Lukas Knuth Jan 15 '13 at 12:01

score 0 · Answer 2 · edited May 23 '17 at 10:34

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Here is a link to a list of great books. Do a search through there and see what people suggest.

SO list of books

edited May 23 '17 at 10:34

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answered May 16 '11 at 19:51

prolink007

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score 0 · Answer 3 · answered May 16 '11 at 19:56

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you'll also need to get familiar with the NDK for making the java portion of your app utilize c or c++ methods.

answered May 16 '11 at 19:56

FoamyGuy

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is it possible to make equalizer android

3 Answers3