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.

确保您已经在build variables上下文菜单中启用了构建变量以“调试”。(你可以在窗口的左下角找到它)。如果您之前已经为应用程序签署了apk，则此选项将被设置为发布模式。这将导致调试消息不显示在日志猫中。

Easy fix that worked for me (after trying some of these other suggestion). My logcat was sitting blank in a separate window (on my second screen). Just had to drag the Logcat tab back to it's original place in the debug panel next to the Debugger and Console tabs, and VOILA... it began immediately updating and showing all processes verbose. So (If your logcat is anywhere outside of the debugger panel (i.e. the logcat tab isn't sitting nested alongside the debugger and console tab) then it won't receive updates and will sit there blankly. Don't know if this is an issue with older versions of Android Studio. But again, easy to try and if it works... it works!!

我经常陷入这种状态。Logcat为空。调试工作，我可以击中断点。没有设置过滤器。日志级别为“Verbose”。我通过以下反复循环来修复它:

重新启动logcat(参见上面Zatziky的回答) 将日志级别更改为Debug(或其他级别)，然后返回Verbose。 拔下并插回设备 运行adb kill-server && adb start-server 关闭Android Studio并在命令行上启动ddms。 重启Android Studio

最后，如果一切都失败了，重新启动计算机。

这个问题是间歇性的，我认为Android Studio就是有bug。

在终端中执行此命令。它将重新开始工作。

adb kill-server && adb start-server

在我的例子中，在开发人员选项菜单中有一个名为

撤销USB调试授权。

一旦你撤销所有现有的授权，它会再次要求信任你正在使用的计算机，之后它开始再次显示日志。