问题
When I try to launch my Android Virtual Device, I get the following error.
Files\Android\android-sdk-windows\tools/emulator-arm.exe.
Hint: use '@foo' to launch a virtual device named 'foo'.
Please use -help for more information.
I have been using the emulator for months, and I just downloaded new updates from SDK/AVD Manager.
回答1:
This problem is caused by blank spaces in the path you setup in the Android SDK. The solution is that you should move the folder of the Android SDK to a place without spaces, in your case:
E:\andriod-sdk-windows
or
D:\abc\xyz\android-sdk-windows
回答2:
Please refer to the Stack Overflow post Starting the Android emulator in SDK tools, revision 12 for a solution. It did not come up in the search, but it did correct my problem. The space in the path name (PROGRAM FILES) seems to be causing the problem. I took the renaming suggestion to change the path name to PROGRA~1, and my problem was resolved.
回答3:
It looks like someone already reported this problem, Issue 18317: Emulator in R12 doesn't properly invoke emulator-arm.exe if the install path as a space in it
... to summarize:
Yes, there will be a fix. We're working on it.
The primary workaround is install in a path with no spaces, e.g. c:\android.
If that's not a choice, the second workaround right now is to use the "short path" Windows notation, e.g. "C:\PROGRA~1" either on command lines or in the Eclipse preferences. Remember that the number might change depending on your directories; you can use "dir /X c:\" in cmd.exe to see the exact short path for a given directory.
We'll have to wait for their fix but in the meantime we can just remove the spaces in the Android installation directory.
回答4:
In Eclipse go to Windows -> Preferences -> Android and in your SDK location replace C:\Program Files\android-sdk-windows with C:\PROGRA~1\android-sdk-windows
回答5:
If you want to run the emulator only without eclipse you'll need to create a .bat file with the SDK short path:
for 32 bits machines: C:\PROGRA~1\Android\android-sdk\SDK Manager.exe
for 64 bits machines: C:\PROGRA~2\Android\android-sdk\SDK Manager.exe
来源：https://stackoverflow.com/questions/6629273/android-emulator-invalid-command-line-parameter