当设备选择器显示时，按住 SHIFT 键并单击要运行应用的每个设备.

Hold down SHIFT and click each device you want to run your app on when the device chooser is displayed.

这只适用于运行应用程序，如果您选择调试，这仅限于一台设备

This only works for running the app, if you choose to debug, this is limited to one device only