我有一个电话申请。我创造了跟踪和播放声音。
AudioTrack audioTrack = new AudioTrack(AudioManager.STREAM_VOICE_CALL, sampleRateInHz, AudioFormat.CHANNEL_CONFIGURATION_MONO, audioFormat, minBufferSize, AudioTrack.MODE_STREAM);
但是当我按下音量按钮时,“媒体”的音量会改变,而不是“通话”。
我可以让音量按钮控制“通话”音量吗?
我找到了一种更改“呼叫”音量的方法,但我需要使用设备上的音量按钮来完成。
audioManager.setStreamVolume(AudioManager.STREAM_VOICE_CALL, 10, AudioManager.FLAG_SHOW_UI);
我在IN_CALL中使用音频管理器setMode,它适用于我的VoIP应用程序。
audioManager.setMode(AudioManager.MODE_IN_CALL);
@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
Log.d(THIS_FILE, "Key down : " + keyCode);
switch (keyCode) {
case KeyEvent.KEYCODE_VOLUME_DOWN:
case KeyEvent.KEYCODE_VOLUME_UP:
// Volume has been adjusted by the user.
Log.d(THIS_FILE, "onKeyDown: Volume button pressed");
int action = AudioManager.ADJUST_RAISE;
if (keyCode == KeyEvent.KEYCODE_VOLUME_DOWN) {
action = AudioManager.ADJUST_LOWER;
}
// Detect if ringing
SipCallSession currentCallInfo = getActiveCallInfo();
// If not any active call active
if (currentCallInfo == null && serviceConnected) {
break;
}
if (service != null) {
try {
service.adjustVolume(currentCallInfo, action, AudioManager.FLAG_SHOW_UI);
} catch (RemoteException e) {
Log.e(THIS_FILE, "Can't adjust volume", e);
}
}
return true;
}
这解决了我的问题。但这是一个伎俩。感谢Mayur Panchal的想法。
public boolean onKeyUp(int keyCode, KeyEvent event) {
switch (keyCode) {
case KeyEvent.KEYCODE_VOLUME_DOWN:
case KeyEvent.KEYCODE_VOLUME_UP:
return true;
}
return super.onKeyUp(keyCode, event);
}
public boolean onKeyDown(int keyCode, KeyEvent event) {
switch (keyCode) {
case KeyEvent.KEYCODE_VOLUME_DOWN:
case KeyEvent.KEYCODE_VOLUME_UP:
AudioManager audioManager = (AudioManager) getSystemService(Context.AUDIO_SERVICE);
audioManager.adjustStreamVolume(streamType, (keyCode == KeyEvent.KEYCODE_VOLUME_DOWN) ? -1 : 1, AudioManager.FLAG_SHOW_UI);
return true;
}
return super.onKeyDown(keyCode, event);
}
我试图使用audioManager.setMode(AudioManager.MODE_IN_CALL)
,但它并不适用于我的所有手机。