如何分析是那个应用导致状态栏消失

最新推荐文章于 2021-02-27 08:55:22 发布

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最新推荐文章于 2021-02-27 08:55:22 发布

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分类专栏： android log 分析

本文链接：https://blog.youkuaiyun.com/lezhang123/article/details/55095584

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本文介绍了一种通过在状态栏管理类中增加日志来定位导致状态栏消失的应用的方法。具体步骤包括修改StatusBarManager和StatusBarManagerService两个核心类，记录调用堆栈信息并根据进程ID（PID）追踪到具体的触发应用。

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如何分析是那个应用导致状态栏消失

状态栏主要的几个控制类中需要增加log如下,再根据pid去查是那个进程.

StatusBarManager.java

public void disable(int what) {
        try {
            final IStatusBarService svc = getService();
            if (svc != null) {
            	if ( (what & DISABLE_EXPAND) != 0 ) {
            		Slog.d("StatusBarManager", "disable status bar , call from" , new RuntimeException("disable"));
            	}
                svc.disable(what, mToken, mContext.getPackageName());
            }
        } catch (RemoteException ex) {
            // system process is dead anyway.
            throw new RuntimeException(ex);
        }
    }

StatusBarManagerService.java

private void disableLocked(int userId, int what, IBinder token, String pkg) {
        // It's important that the the callback and the call to mBar get done
        // in the same order when multiple threads are calling this function
        // so they are paired correctly.  The messages on the handler will be
        // handled in the order they were enqueued, but will be outside the lock.
        manageDisableListLocked(userId, what, token, pkg);
        // Ensure state for the current user is applied, even if passed a non-current user.
        final int net = gatherDisableActionsLocked(mCurrentUserId);
        if (net != mDisabled) {
            mDisabled = net;
            mHandler.post(new Runnable() {
                    public void run() {
                        mNotificationDelegate.onSetDisabled(net);
                    }
                });
            if (mBar != null) {
                try {
                    /// M:[ALPS01673960] Fix User cannot drag down the notification bar.
                    Slog.d(TAG, "disable statusbar calling PID = " + Binder.getCallingPid());
                    mBar.disable(net);
                } catch (RemoteException ex) {
                }
            }
        }
    }