Android volume control adjustment

Http://blog.csdn.net/hufeng882412/article/details/7310131

[Java]View
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1. // Volume control, initialization Definition
2. Audiomanager maudiomanager = (audiomanager) getsystemservice (context. audio_service );
3. // Maximum volume
4. Int maxvolume = maudiomanager. getstreammaxvolume (audiomanager. stream_music );
5. // Current volume
6. Int currentvolume = maudiomanager. getstreamvolume (audiomanager. stream_music );

Directly control the volume:
[Java]View
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1. If (issilent ){
2. Maudiomanager. setstreamvolume (audiomanager. stream_music, 0, 0 );
3. } Else {
4. Maudiomanager. setstreamvolume (audiomanager. stream_music, tempvolume, 0); // tempvolume: absolute volume value
5. }

Use one step to increase or decrease the volume. The default volume control bar is displayed:
[Java]View
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1. // Reduce the volume and bring up the system volume control
2. If (flag = 0 ){
3. Maudiomanager. adjuststreamvolume (audiomanager. stream_music, audiomanager. adjust_lower,
4. Audiomanager. fx_focus_navigation_up );
5. }
6. // Increase the volume and bring up the system volume control
7. Else if (flag = 1 ){
8. Maudiomanager. adjuststreamvolume (audiomanager. stream_music, audiomanager. adjust_raise,
9. Audiomanager. fx_focus_navigation_up );
10. }