Failed to install *.apk on device 'emulator-5554': timeout

错误提示： Failed to install helloworld.apk on device 'emulator-5554': timeout 或者 the user data image is used   原因： 由于模拟器已经开启而没有关闭或者非法关闭引起的。 解决方法： 删除 C:\Documents and Settings\Administrator\.android\avd\对应版本.avd 下所有以.lock结尾的文件夹。     或者   Failed to install *.apk on device *: timeout Launch canceled!   <!----> 1. Cleaning the project (Project->Clean) 2. Restarting device, Eclipse, laptop, all of the above... 3. Moving the project to a location without spaces, according to Failed to install apk on device 'emulator-5554': timeout <

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