原创 andrid8.0以及以上获取顶层任务中activity失

1/某些activity 手机端都未必能获取，手机端一般是使用的无障碍服务实现的，
2/8.0 以前的命令find 已经无法找到了。

C:\Users\Administrator>adb shell dumpsys activity|findstr  /n /e "Hist.*#0:.*}"
3293:        Hist #0: ActivityRecord{dea3d63 u0 com.huawei.android.dsdscardmanager/.HWCardManagerActivity t1893}
3313:        Hist #0: ActivityRecord{28778b4 u0 com.tencent.mobileqq/.activity.SplashActivity t1799}
3324:        Hist #0: ActivityRecord{13b102 u0 com.xposed.antforest/.MainActivity t1890}
3335:        Hist #0: ActivityRecord{8ceb704 u0 cn.qssq666.q.plus/cn.qssq666.common.QPlusMainActivity t1894}
3352:        Hist #0: ActivityRecord{d403dd0 u0 net.dinglisch.android.taskerm/.Main t1871}
3363:        Hist #0: ActivityRecord{c535f98 u0 cn.qssq666.fixengine/.MainActivity t1892}
3374:        Hist #0: ActivityRecord{530d618 u0 org.autojs.autojs/.ui.main.MainActivity_ t1856}
3385:        Hist #0: ActivityRecord{464f2 u0 com.android.contacts/.activities.DialtactsActivity t1846}
3399:        Hist #0: ActivityRecord{a9e1ae1 u0 com.tencent.mm/.ui.LauncherUI t1800}
3413:        Hist #0: ActivityRecord{6e94ed9 u0 com.huawei.health/.MainActivity t1839}
3426:        Hist #0: ActivityRecord{477eb32 u0 com.tencent.mobileqq/cooperation.qwallet.plugin.QWalletPluginProxyActivity t1832}
3436:        Hist #0: ActivityRecord{22f53da u0 com.android.incallui/.InCallActivity t1847}
3486:        Hist #0: ActivityRecord{1bb0769 u0 com.huawei.android.launcher/.unihome.UniHomeLauncher t1795}
3505:        Hist #0: ActivityRecord{68f6d36 u0 com.android.systemui/.recents.RecentsActivity t1801}

C:\Users\Administrator>

这里 第一个就是最顶层的。