Thanks for the reply Sachin, but I'm not sure how to check for user permission for changing audio manager.
Anyways I found the mistake that I was doing. First we need to instantiate the AudioManager object as: MyAudio = (AudioManager) getSystemService(Context.AUDIO_SERVICE); now getStreamVolume(streamType) and setStreamVolume(streamType, index, flag) will do the trick. But now I'm stuck at another problem. This method increases/decreases the volume of the system (in my case the emulator). I want to keep the volume of the system as it is and increase/decrease the volume of just the application. Such that the application volume level will vary between 0 and current system volume level. Any help will be appreciated. Thanks in advance. On Jun 9, 10:55 pm, sachin ravi <[email protected]> wrote: > 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 <[email protected]> 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. > > > -- > > You received this message because you are subscribed to the Google > > Groups "Android Developers" group. > > To post to this group, send email to [email protected] > > To unsubscribe from this group, send email to > > [email protected]<android-developers%[email protected]> > > For more options, visit this group at > >http://groups.google.com/group/android-developers?hl=en -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
