我尝试启动API级别8的模拟器，并在ANDROID简介闪烁后显示黑屏。
我在DDMS中收到以下错误消息：
01-01 17:56:51.315: E/System(120): Failure starting core service
01-01 17:56:51.315: E/System(120): java.lang.NullPointerException
01-01 17:56:51.344: E/SystemServer(120): Failure starting DevicePolicyService
01-01 17:56:51.344: E/SystemServer(120): java.lang.NullPointerException
01-01 17:56:51.685: E/SystemServer(120): Failure starting StatusBarService
01-01 17:56:51.685: E/SystemServer(120): java.lang.NullPointerException
01-01 17:56:51.735: E/SystemServer(120): Failure starting Input Manager Service
01-01 17:56:51.735: E/SystemServer(120): java.lang.NullPointerException
01-01 17:56:51.825: E/AndroidRuntime(120): *** FATAL EXCEPTION IN SYSTEM PROCESS: ConnectivityThread
01-01 17:56:51.825: E/AndroidRuntime(120): java.lang.NullPointerException
这是我在控制台中获得的内容：
[2012-01-01 17:52:39 - find_an_event] ------------------------------
[2012-01-01 17:52:39 - find_an_event] Android Launch!
[2012-01-01 17:52:39 - find_an_event] adb is running normally.
[2012-01-01 17:52:39 - find_an_event] No Launcher activity found!
[2012-01-01 17:52:39 - find_an_event] The launch will only sync the application package on the device!
[2012-01-01 17:52:39 - find_an_event] Performing sync
[2012-01-01 17:52:39 - find_an_event] Automatic Target Mode: Preferred AVD 'avd' is not available. Launching new emulator.
[2012-01-01 17:52:39 - find_an_event] Launching a new emulator with Virtual Device 'avd'
[2012-01-01 17:53:02 - Emulator] emulator: WARNING: Unable to create sensors port: Unknown error
[2012-01-01 17:53:02 - find_an_event] New emulator found: emulator-5554
[2012-01-01 17:53:02 - find_an_event] Waiting for HOME ('android.process.acore') to be launched...
[2012-01-01 18:11:31 - find_an_event] emulator-5554 disconnected! Cancelling 'sync'!
我认为原因可能是无法同步我添加到源文件路径中的其他jar文件（oAuth的路标）。关于如何让模拟器工作的任何想法？