我刚刚更改了applictionId和logcat停止工作。要重置它，您必须更改包的名称。只需点击右上角的下拉在Logcat窗口，显示你的应用程序包的名称，点击它，然后点击编辑过滤器配置，现在改变包的名称。它将开始工作。

在android Studio应用程序中，您需要单击调试应用程序选项(Shift+f9)以调试模式运行并启用LogCat。

在我的情况下，我只是过滤了输出，所以即使在重新启动Logcat等后，它也显示为空。

在“设备logcat”选项卡的右侧有一个按钮“只显示所选进程的logcat”。它并不完美，因为每次我运行另一个进程时，我都需要再次推动它，但这是唯一适合我的解决方案。到目前为止…

我刚把它修好了。在DDMS显示的最右边寻找恢复Devices Logcat视图和ADB视图的小图标。

When the DDMS first came up with both the "ADB Logs" and the "Devices | logcat" tab showing. The "Devices | logcat" is the one that should be showing the device output, but was blank. Somehow I managed to hide one or the other of those tabs, I forget exactly how. But, off to the right there was a tiny icon that said "Restore ADB" view, and I clicked it and it came up. Then there was another tiny icon that said "Restore Devices logcat view". I clicked that, and all of a sudden it appeared and was showing the device output again.

这些帮助了我:

1.启用ADB集成 2. 进入Android设备监视器 检查您的设备是否在线，并创建所需的过滤器