锁屏界面禁止下拉快捷面板，屏蔽通知消息

实现一个功能，在锁屏界面中屏蔽快捷面板下拉，屏蔽通知消息，基于Android14来讲，网上的博客什么的大部分用不了，很多文件都找不到了，这里将修改文件做个简单记录

1、屏蔽通知

// frameworks\base\services\core\java\com\android\server\notification\NotificationManagerService.java

void enqueueNotificationInternal(final String pkg, final String opPkg, final int callingUid,
            final int callingPid, final String tag, final int id, final Notification notification,
            int incomingUserId, boolean byForegroundService) {

        //  add block,添加具体判断逻辑
        if(...){
            android.util.Log.d("tag","NotificationManagerService#enqueueNotificationInternal block ------");    
            return;
        }
        //  add block end    
        enqueueNotificationInternal(pkg, opPkg, callingUid, callingPid, tag, id, notification,
                incomingUserId, false /* postSilently */, byForegroundService);
    }


    void enqueueNotificationInternal(final String pkg, final String opPkg, final int callingUid,
            final int callingPid, final String tag, final int id, final Notification notification,
            int incomingUserId, boolean postSilently, boolean byForegroundService) {
        //  add block
        if(...){
            android.util.Log.d("tag","NotificationManagerService#enqueueNotificationInternal block --------- 222222222");
            return;
        }
        //  add block end
        PostNotificationTracker tracker = acquireWakeLockForPost(pkg, callingUid);
        boolean enqueued = false;
        try {
            enqueued = enqueueNotificationInternal(pkg, opPkg, callingUid, callingPid, tag, id,
                    notification, incomingUserId, postSilently, tracker, byForegroundService);
        } finally {
            if (!enqueued) {
                tracker.cancel();
            }
        }
    }

2、屏蔽快捷面板下拉

2.1

// frameworks\base\services\core\java\com\android\server\statusbar\StatusBarManagerService.java

private void enforceExpandStatusBar() {
        //  add block
        if(...){
            android.util.Log.d("tag","StatusBarManagerService#enforceExpandStatusBar block ---------");
            return;
        }
        mContext.enforceCallingOrSelfPermission(android.Manifest.permission.EXPAND_STATUS_BAR,
                "StatusBarManagerService");
    }

2.2

//frameworks\base\packages\SystemUI\src\com\android\systemui\shade\QuickSettingsController.java

    /** update Qs height state */
    public void setExpansionHeight(float height) {
        // TODO(b/277909752): remove below log when bug is fixed
        if (mSplitShadeEnabled && mShadeExpandedFraction == 1.0f && height == 0) {
            Log.wtf(TAG,
                    "setting QS height to 0 in split shade while shade is open(ing). "
                            + "Value of mExpandImmediate = " + mExpandImmediate);
        }
	//   add block
    if(...){
            android.util.Log.d("tag","QuickSettingsController#setExpansionHeight" block ---------");
            return;
        }
    ... ...
}

2.3

// frameworks\base\packages\SystemUI\src\com\android\systemui\statusbar\CommandQueue.java

       // TODO(b/118592525): add multi-display support if needed.
    public boolean panelsEnabled() {
        if(...){
            android.util.Log.d("tag","CommandQueue#panelsEnabled block ---------");
            return false;
        }
        final int disabled1 = getDisabled1(mDisplayTracker.getDefaultDisplayId());
        final int disabled2 = getDisabled2(mDisplayTracker.getDefaultDisplayId());
        return (disabled1 & StatusBarManager.DISABLE_EXPAND) == 0
                && (disabled2 & StatusBarManager.DISABLE2_NOTIFICATION_SHADE) == 0;
    }

功能可用，后续Android其他版本，可能对应源码有调整，对应的修改位置也就需要做对应修改，这种修改在Android14 源码中有效