Android8.0 ZenMode 静音模式

最新推荐文章于 2021-05-29 11:10:52 发布

Aaron - Wistron

最新推荐文章于 2021-05-29 11:10:52 发布

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分类专栏： Android8.0 framework

本文链接：https://blog.youkuaiyun.com/Aaron121314/article/details/78541017

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本文解析了Android系统中静音模式实现的核心代码。通过两个关键函数，分别对通知限制、来电限制及完全静音限制进行了详细说明，并展示了如何根据不同场景调整静音设置。

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静音模式的实现代码在
frameworks/base/services/core/java/com/android/server/notification
主要看这2个函数。
有些我做了点修改。

    private void applyRestrictions() {
        final boolean zen = mZenMode != Global.ZEN_MODE_OFF;

        // notification restrictions
        final boolean muteNotifications =
                (mSuppressedEffects & SUPPRESSED_EFFECT_NOTIFICATIONS) != 0;
        // call restrictions
        final boolean muteCalls = zen && !mConfig.allowCalls && !mConfig.allowRepeatCallers
                || (mSuppressedEffects & SUPPRESSED_EFFECT_CALLS) != 0;
        // total silence restrictions
        final boolean muteEverything = mZenMode == Global.ZEN_MODE_NO_INTERRUPTIONS;

        for (int usage : AudioAttributes.SDK_USAGES) {
            final int suppressionBehavior = AudioAttributes.SUPPRESSIBLE_USAGES.get(usage);
            if (suppressionBehavior == AudioAttributes.SUPPRESSIBLE_NEVER) {
                applyRestrictions(false /*mute*/, usage);
            } else if (suppressionBehavior == AudioAttributes.SUPPRESSIBLE_NOTIFICATION) {
                applyRestrictions(muteNotifications || muteEverything||mGameMode, usage);
            } else if (suppressionBehavior == AudioAttributes.SUPPRESSIBLE_CALL) {
                applyRestrictions(muteCalls || muteEverything||mGameMode, usage);
            } else if(usage==AudioAttributes.SDK_USAGES[4]) {
                //Alarm
                applyRestrictions(mGameMode, usage);
            }
            else {
                applyRestrictions(muteEverything, usage);
            }
        }
    }

    private void applyZenToRingerMode() {
        if (mAudioManager == null) return;
        // force the ringer mode into compliance
        final int ringerModeInternal = mAudioManager.getRingerModeInternal();
        int newRingerModeInternal = ringerModeInternal;
        switch (mZenMode) {
            case Global.ZEN_MODE_NO_INTERRUPTIONS:
            case Global.ZEN_MODE_ALARMS:
                if (ringerModeInternal != AudioManager.RINGER_MODE_SILENT) {
                    setPreviousRingerModeSetting(ringerModeInternal);
                    newRingerModeInternal = AudioManager.RINGER_MODE_SILENT;
                }
                break;
            case Global.ZEN_MODE_IMPORTANT_INTERRUPTIONS:
            case Global.ZEN_MODE_OFF:
                if (ringerModeInternal == AudioManager.RINGER_MODE_SILENT) {
                    newRingerModeInternal = getPreviousRingerModeSetting();
                    setPreviousRingerModeSetting(null);
                }
                break;
        }
        if (newRingerModeInternal != -1) {
            mAudioManager.setRingerModeInternal(newRingerModeInternal, TAG);
        }
    }