展开、收起状态栏

可用于点击Notifacation之后收起状态栏

public static final void collapseStatusBar(Context ctx) {
    Object sbservice = ctx.getSystemService("statusbar");
    try {
        Class<?> statusBarManager = Class.forName("android.app.StatusBarManager");
        Method collapse;
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) {
            collapse = statusBarManager.getMethod("collapsePanels");
        } else {
            collapse = statusBarManager.getMethod("collapse");
        }
        collapse.invoke(sbservice);
    } catch (Exception e) {
        e.printStackTrace();
    }
}

public static final void expandStatusBar(Context ctx) {
    Object sbservice = ctx.getSystemService("statusbar");
    try {
        Class<?> statusBarManager = Class.forName("android.app.StatusBarManager");
        Method expand;
        if (Build.VERSION.SDK_INT >= 17) {
            expand = statusBarManager.getMethod("expandNotificationsPanel");
        } else {
            expand = statusBarManager.getMethod("expand");
        }
        expand.invoke(sbservice);
    } catch (Exception e) {
        e.printStackTrace();
    }
}