android.media.AudioManager#getStreamMaxVolume ( )源码实例Demo

下面列出了android.media.AudioManager#getStreamMaxVolume ( ) 实例代码，或者点击链接到github查看源代码，也可以在右侧发表评论。

源代码1 项目： android_9.0.0_r45 文件： VolumeControlAction.java

private boolean shouldUpdateAudioVolume(boolean mute) {
    // Do nothing if in mute.
    if (mute) {
        return true;
    }

    // Update audio status if current volume position is edge of volume bar,
    // i.e max or min volume.
    AudioManager audioManager = tv().getService().getAudioManager();
    int currentVolume = audioManager.getStreamVolume(AudioManager.STREAM_MUSIC);
    if (mIsVolumeUp) {
        int maxVolume = audioManager.getStreamMaxVolume(AudioManager.STREAM_MUSIC);
        return currentVolume == maxVolume;
    } else {
        return currentVolume == 0;
    }
}

源代码2 项目： NightWatch 文件： Notifications.java

private void soundAlert(String soundUri) {
    manager = (AudioManager) mContext.getSystemService(Context.AUDIO_SERVICE);
    int maxVolume = manager.getStreamMaxVolume(AudioManager.STREAM_MUSIC);
    currentVolume = manager.getStreamVolume(AudioManager.STREAM_MUSIC);
    manager.setStreamVolume(AudioManager.STREAM_MUSIC, maxVolume, 0);
    Uri notification = Uri.parse(soundUri);
    MediaPlayer player = MediaPlayer.create(mContext, notification);

    player.setOnCompletionListener(new MediaPlayer.OnCompletionListener() {
        @Override
        public void onCompletion(MediaPlayer mp) {
            manager.setStreamVolume(AudioManager.STREAM_MUSIC, currentVolume, 0);
        }
    });
    player.start();
}

源代码3 项目： xDrip 文件： Notifications.java

public static void soundAlert(String soundUri) {
    manager = (AudioManager) mContext.getSystemService(Context.AUDIO_SERVICE);
    int maxVolume = manager.getStreamMaxVolume(AudioManager.STREAM_MUSIC);
    currentVolume = manager.getStreamVolume(AudioManager.STREAM_MUSIC);
    manager.setStreamVolume(AudioManager.STREAM_MUSIC, maxVolume, 0);
    Uri notification = Uri.parse(bg_notification_sound);
    MediaPlayer player = MediaPlayer.create(mContext, notification);

    player.setOnCompletionListener(new MediaPlayer.OnCompletionListener() {
        @Override
        public void onCompletion(MediaPlayer mp) {
            manager.setStreamVolume(AudioManager.STREAM_MUSIC, currentVolume, 0);
        }
    });
    player.start();
}

源代码4 项目： GLEXP-Team-onebillion 文件： OBSettingsContentObserver.java

@Override
public void onChange (boolean selfChange)
{
    if (MainActivity.mainActivity == null) return;
    //
    float minVolume = OBConfigManager.sharedManager.getMinimumAudioVolumePercentage() / (float) 100;
    // if value is not present in the config, the min volume will be -.01
    AudioManager am = (AudioManager) MainActivity.mainActivity.getSystemService(Context.AUDIO_SERVICE);
    currentVolume = am.getStreamVolume(AudioManager.STREAM_MUSIC);
    int maxVolume = am.getStreamMaxVolume(AudioManager.STREAM_MUSIC);
    int minVolumeLimit = Math.round(maxVolume * minVolume);
    if (currentVolume < minVolumeLimit)
    {
        MainActivity.log("Current Volume (" + currentVolume + ") lower than permitted minimum (" + minVolumeLimit + "). Resetting value");
        am.setStreamVolume(AudioManager.STREAM_MUSIC, minVolumeLimit, 0);
        currentVolume = minVolumeLimit;
    }
    OBAnalyticsManager.sharedManager.deviceVolumeChanged(currentVolume / (float) maxVolume);
    OBSystemsManager.sharedManager.refreshStatus();
}

源代码5 项目： AssistantBySDK 文件： LingjuAudioPlayer.java

@Override
public void onAudioFocusChange(int focusChange) {
    Log.e(TAG, "audioFocusChangeListener.onAudioFocusChange>>>>>>>>>>>>>>>>>>" + focusChange);
    AudioManager audioManager = (AudioManager) mContext.getSystemService(Context.AUDIO_SERVICE);
    switch (focusChange) {
        case AudioManager.AUDIOFOCUS_LOSS_TRANSIENT:
        case AudioManager.AUDIOFOCUS_LOSS_TRANSIENT_CAN_DUCK: {
            if (mPlayer != null) {
                volScalar = ((float) audioManager.getStreamVolume(AudioManager.STREAM_MUSIC)) / audioManager.getStreamMaxVolume(AudioManager.STREAM_MUSIC);
                // Log.i("LingJu", "获取媒体音量：" + volScalar);
                mPlayer.setVolume(0.2f, 0.2f);

            }
            break;
        }
        case AudioManager.AUDIOFOCUS_GAIN:
            if (mPlayer != null) {
                // Log.i("LingJu", "获取焦点后设置播放音量：" + volScalar);
                volScalar = volScalar == 0 ? 0.5f : volScalar;
                mPlayer.setVolume(volScalar, volScalar);
            }
            break;
        default:
            break;
    }
}

源代码6 项目： AssistantBySDK 文件： MusicPlayProcessor.java

/**
 * 调整音量
 *
 * @param increase true=增加百分之20 false=减少百分之20
 */

public String ajustVol(boolean increase, int progress) {
    AudioManager mAudioManager = (AudioManager) mContext.getSystemService(Context.AUDIO_SERVICE);
    int currentVolume = mAudioManager.getStreamVolume(AudioManager.STREAM_MUSIC);
    float max = mAudioManager.getStreamMaxVolume(AudioManager.STREAM_MUSIC);
    currentVolume = (int) (currentVolume + max * (progress / 100.0f) * (increase ? 1 : -1));
    if (currentVolume < 0)
        currentVolume = 0;
    else if (currentVolume > max)
        currentVolume = (int) max;
    mAudioManager.setStreamVolume(AudioManager.STREAM_MUSIC, currentVolume, 0);
    //弹出系统媒体音量调节框
    mAudioManager.adjustStreamVolume(AudioManager.STREAM_MUSIC,
            AudioManager.ADJUST_SAME, AudioManager.FLAG_PLAY_SOUND
                    | AudioManager.FLAG_SHOW_UI);

    NumberFormat nf = NumberFormat.getPercentInstance();
    //返回数的整数部分所允许的最大位数
    nf.setMaximumIntegerDigits(3);
    //返回数的小数部分所允许的最大位数
    // nf.setMaximumFractionDigits(2);
    return nf.format(currentVolume / max);
}

源代码7 项目： matrix-android-console 文件： CallViewActivity.java

@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
    // assume that the user cancels the call if it is ringing
    if (keyCode == KeyEvent.KEYCODE_BACK) {
        if (!canCallBeResumed()) {
            if (null != mCall) {
                mCall.hangup("");
            }
        } else {
            saveCallView();
        }
    } else if ((keyCode == KeyEvent.KEYCODE_VOLUME_DOWN) || (keyCode == KeyEvent.KEYCODE_VOLUME_UP)) {
        // this is a trick to reduce the ring volume :
        // when the call is ringing, the AudioManager.Mode switch to MODE_IN_COMMUNICATION
        // so the volume is the next call one whereas the user expects to reduce the ring volume.
        if ((null != mCall) && mCall.getCallState().equals(IMXCall.CALL_STATE_RINGING)) {
            AudioManager audioManager = (AudioManager) CallViewActivity.this.getSystemService(Context.AUDIO_SERVICE);
            // IMXChrome call issue
            if (audioManager.getMode() == AudioManager.MODE_IN_COMMUNICATION) {
                int musicVol = audioManager.getStreamVolume(AudioManager.STREAM_VOICE_CALL) * audioManager.getStreamMaxVolume(AudioManager.STREAM_MUSIC) / audioManager.getStreamMaxVolume(AudioManager.STREAM_VOICE_CALL);
                audioManager.setStreamVolume(AudioManager.STREAM_MUSIC, musicVol, 0);
            }
        }
    }

    return super.onKeyDown(keyCode, event);
}

源代码8 项目： DMusic 文件： TouchLayout.java

private void init(Context context) {
    mActivity = (Activity) context;
    touchSlop = ViewConfiguration.get(context).getScaledTouchSlop();
    View root = LayoutInflater.from(context).inflate(R.layout.lib_player_layout_touch, this);
    initView(root);
    int[] size = Util.getScreenSize(mActivity);
    screenWidth = size[0];
    audioManager = (AudioManager) context.getSystemService(Context.AUDIO_SERVICE);
    maxVolume = audioManager.getStreamMaxVolume(AudioManager.STREAM_MUSIC);
    gestureDetector = new GestureDetector(context, new PlayerGestureListener());

    root.setClickable(true);
    root.setOnTouchListener(this);
}

源代码9 项目： DeviceConnect-Android 文件： HostMediaPlayerManager.java

/**
 * 状態変化のイベントを通知.
 *
 * @param status ステータス
 */
public void sendOnStatusChangeEvent(final String status) {
    if (mOnStatusChangeEventFlag) {
        List<Event> events = EventManager.INSTANCE.getEventList(HostDevicePlugin.SERVICE_ID,
                MediaPlayerProfile.PROFILE_NAME, null, MediaPlayerProfile.ATTRIBUTE_ON_STATUS_CHANGE);

        AudioManager manager = (AudioManager) getContext().getSystemService(Context.AUDIO_SERVICE);

        double maxVolume = manager.getStreamMaxVolume(AudioManager.STREAM_MUSIC);
        double mVolume = manager.getStreamVolume(AudioManager.STREAM_MUSIC);
        double mVolumeValue = mVolume / maxVolume;

        for (int i = 0; i < events.size(); i++) {

            Event event = events.get(i);
            Intent intent = EventManager.createEventMessage(event);

            MediaPlayerProfile.setAttribute(intent, MediaPlayerProfile.ATTRIBUTE_ON_STATUS_CHANGE);
            Bundle mediaPlayer = new Bundle();
            MediaPlayerProfile.setStatus(mediaPlayer, status);
            MediaPlayerProfile.setMediaId(mediaPlayer, mMyCurrentMediaId);
            MediaPlayerProfile.setMIMEType(mediaPlayer, mMyCurrentFileMIMEType);
            MediaPlayerProfile.setPos(mediaPlayer, mMyCurrentMediaPosition / UNIT_SEC);
            MediaPlayerProfile.setVolume(mediaPlayer, mVolumeValue);
            MediaPlayerProfile.setMediaPlayer(intent, mediaPlayer);
            sendEvent(intent, event.getAccessToken());
        }
    }
}

源代码10 项目： DevUtils 文件： AudioManagerUtils.java

/**
 * 获取指定声音流最大音量大小
 * @param streamType 流类型
 * @return 最大音量大小
 */
public static int getStreamMaxVolume(final int streamType) {
    AudioManager audioManager = AppUtils.getAudioManager();
    if (audioManager != null) {
        try {
            return audioManager.getStreamMaxVolume(streamType);
        } catch (Exception e) {
            LogPrintUtils.eTag(TAG, e, "getStreamMaxVolume");
        }
    }
    return 0;
}

源代码11 项目： itracing2 文件： ToggleRingPhone.java

private void startRing(Context context, Intent intent) {
    Log.d(TAG,"startRing()");
    if (currentRingtone != null) {
        currentRingtone.stop();
        currentRingtone = null;
    }
    final String address = intent.getStringExtra(Devices.ADDRESS);
    final String source = intent.getStringExtra(Devices.SOURCE);
    Uri sound = Uri.parse(Preferences.getRingtone(context, address, source));
    currentRingtone = RingtoneManager.getRingtone(context, sound);

    if (currentRingtone == null) {
        Toast.makeText(context, R.string.ring_tone_not_found, Toast.LENGTH_LONG).show();
        return;
    }

    AudioManager audioManager = (AudioManager) context.getSystemService(Context.AUDIO_SERVICE);
    final int max = audioManager.getStreamMaxVolume(AudioManager.STREAM_RING);
    audioManager.setStreamVolume(AudioManager.STREAM_RING, max, 0);

    currentRingtone.play();

    NotificationManager notificationManager = (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);
    final Notification notification = new Notification.Builder(context)
            .setContentText(context.getString(R.string.stop_ring))
            .setContentTitle(context.getString(R.string.app_name))
            .setSmallIcon(R.drawable.ic_launcher)
            .setAutoCancel(false)
            .setOngoing(true)
            .setContentIntent(PendingIntent.getBroadcast(context, 0, new Intent(context, ToggleRingPhone.class), PendingIntent.FLAG_UPDATE_CURRENT))
            .build();
    notificationManager.notify(NOTIFICATION_ID, notification);
}

源代码12 项目： homescreenarcade 文件： SoundEngine.java

public void play(int sound) {
	AudioManager mgr = (AudioManager) context
			.getSystemService(Context.AUDIO_SERVICE);
	float streamVolumeCurrent = mgr
			.getStreamVolume(AudioManager.STREAM_RING);
	float streamVolumeMax = mgr
			.getStreamMaxVolume(AudioManager.STREAM_RING);
	float volume = streamVolumeCurrent / streamVolumeMax;

	sounds.play(soundsMap.get(sound), volume, volume, 1, 0, 1.f);
}

源代码13 项目： GLEXP-Team-onebillion 文件： OBSettingsContentObserver.java

public boolean allowsLowerVolume ()
{
    if (MainActivity.mainActivity == null) return false;
    //
    float minVolume = OBConfigManager.sharedManager.getMinimumAudioVolumePercentage() / (float) 100;
    // if value is not present in the config, the min volume will be -.01
    AudioManager am = (AudioManager) MainActivity.mainActivity.getSystemService(Context.AUDIO_SERVICE);
    currentVolume = am.getStreamVolume(AudioManager.STREAM_MUSIC);
    int maxVolume = am.getStreamMaxVolume(AudioManager.STREAM_MUSIC);
    int minVolumeLimit = Math.round(maxVolume * minVolume);
    return currentVolume > minVolumeLimit;
}

源代码14 项目： GLEXP-Team-onebillion 文件： OBSettingsContentObserver.java

public String printVolumeStatus ()
{
    if (MainActivity.mainActivity == null) return "";
    //
    AudioManager am = (AudioManager) MainActivity.mainActivity.getSystemService(Context.AUDIO_SERVICE);
    int maxVolume = am.getStreamMaxVolume(AudioManager.STREAM_MUSIC);
    currentVolume = am.getStreamVolume(AudioManager.STREAM_MUSIC);
    //
    return Math.round((currentVolume / (float) maxVolume) * 100.0f) + "%";
}

源代码15 项目： AssistantBySDK 文件： VoiceMediator.java

@Override
public void changeMediaVolume(int percent) {
    AudioManager audioManager = (AudioManager) mContext.getSystemService(Context.AUDIO_SERVICE);
    mCurrentVolume = audioManager.getStreamVolume(AudioManager.STREAM_MUSIC);
    int maxVolume = audioManager.getStreamMaxVolume(AudioManager.STREAM_MUSIC);
    int volume = (int) ((percent / 100.0) * maxVolume + 0.5);
    audioManager.setStreamVolume(AudioManager.STREAM_MUSIC, volume, 0);
    audioManager.adjustStreamVolume(AudioManager.STREAM_MUSIC,
            AudioManager.ADJUST_SAME, AudioManager.FLAG_PLAY_SOUND
                    | AudioManager.FLAG_SHOW_UI);
}

源代码16 项目： freemp 文件： ServicePlayer.java

public void volumeDown() {
    AudioManager am =
            (AudioManager) getSystemService(Context.AUDIO_SERVICE);
    if (am == null) return;
    int currVolume = am.getStreamVolume(AudioManager.STREAM_MUSIC);
    int maxVolume = am.getStreamMaxVolume(AudioManager.STREAM_MUSIC);
    currVolume = currVolume - (maxVolume / 10);
    if (currVolume < 0)
        currVolume = 0;
    am.setStreamVolume(AudioManager.STREAM_MUSIC, currVolume, AudioManager.FLAG_SHOW_UI);
}

源代码17 项目： SimpleSmsRemote 文件： AudioUtils.java

private static int getVolumeIndexFromPercentage(AudioManager audioManager, int streamType, float volumePercentage) {
    int maxIndex = audioManager.getStreamMaxVolume(streamType);
    return Math.round(volumePercentage / 100f * (float) maxIndex);
}

源代码18 项目： PlayerBase 文件： GestureCover.java

private void initAudioManager(Context context) {
    audioManager = (AudioManager) context.getSystemService(Context.AUDIO_SERVICE);
    mMaxVolume = audioManager.getStreamMaxVolume(AudioManager.STREAM_MUSIC);
}

源代码19 项目： SkyTube 文件： YouTubePlayerV2Fragment.java

@Override
public void adjustVolumeLevel(double adjustPercent) {
	if (disableGestures) {
		return;
	}

	// We are setting volume percent to a value that should be from -1.0 to 1.0. We need to limit it here for these values first
	if (adjustPercent < -1.0f) {
		adjustPercent = -1.0f;
	} else if (adjustPercent > 1.0f) {
		adjustPercent = 1.0f;
	}

	AudioManager audioManager = (AudioManager) getContext().getSystemService(Context.AUDIO_SERVICE);
	final int STREAM = AudioManager.STREAM_MUSIC;

	// Max volume will return INDEX of volume not the percent. For example, on my device it is 15
	int maxVolume = audioManager.getStreamMaxVolume(STREAM);
	if (maxVolume == 0) return;

	if (startVolumePercent < 0) {
		// We are getting actual volume index (NOT volume but index). It will be >= 0.
		int curVolume = audioManager.getStreamVolume(STREAM);
		// And counting percents of maximum volume we have now
		startVolumePercent = curVolume * 1.0f / maxVolume;
	}
	// Should be >= 0 and <= 1
	double targetPercent = startVolumePercent + adjustPercent;
	if (targetPercent > 1.0f) {
		targetPercent = 1.0f;
	} else if (targetPercent < 0) {
		targetPercent = 0;
	}

	// Calculating index. Test values are 15 * 0.12 = 1 ( because it's int)
	int index = (int) (maxVolume * targetPercent);
	if (index > maxVolume) {
		index = maxVolume;
	} else if (index < 0) {
		index = 0;
	}
	audioManager.setStreamVolume(STREAM, index, 0);

	indicatorImageView.setImageResource(R.drawable.ic_volume);
	indicatorTextView.setText(index * 100 / maxVolume + "%");

	// Show indicator. It will be hidden once onGestureDone will be called
	showIndicator();
}

源代码20 项目： Saiy-PS 文件： VolumeHelper.java

/**
 * Get the maximum volume value of the media stream
 *
 * @param audioManager object
 * @return the integer value
 */
private static int getMaxMediaVolume(@NonNull final AudioManager audioManager) {
    return audioManager.getStreamMaxVolume(AudioManager.STREAM_MUSIC);
}

方法所在类

android.media.AudioManager