Just check for user permission for changing audio manager and add in the
AndroidManifest file.
On Tue, Jun 8, 2010 at 11:15 AM, Alok <alokmishra.b...@gmail.com> wrote:
> Hello,
>
> I have some years of experience in C/C++ and bit of Java programming
> in Linux, but I'm new to Android.
>
> For start I'm trying to develop a video player on android. I'm able to
> play the video using the VideoView widget. But when I'm trying to
> control the volume using AudioManager, the application crashes saying:
> "The application Video (process com.android.video) has stopped
> unexpectedly. Please try again."
>
> If it helps : I've downloaded the Android source (ECLAIR) and using
> the sdk directly from the source and I'm using Eclipse 3.1.1. I've
> successfully run the sample apps from the source code.
>
> The following is a snapshot of what I'm trying to do in my code:
>
> [code]
> package com.android.video;
> ....
> import android.media.AudioManager;
> ....
> public class Video extends Activity {
> .
> .
> private AudioManager MyAudio;
> .
> .
> .
> MyVolUp.setOnClickListener(new OnClickListener(){
> public void onClick(View view) {
> MyAudio.adjustStreamVolume(MyAudio.STREAM_MUSIC,
> MyAudio.ADJUST_RAISE, MyAudio.FLAG_PLAY_SOUND);
> }
> });
> .
> .
>
> [/code]
>
> 1. What am I doing wrong here?
> 2. I was going through the Android source and saw that AudioManager
> (even MediaPlayer) are using the native functions for handling audio.
> How can I use those native function (just for experimenting, not
> related to my project) in my application? We can do it using JNI but
> I'm not sure how to use the native functions already there in android.
>
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