android 1.5 SDK 模拟器无法启动问题

　　作者：岳峰，华清远见嵌入式学院讲师。

　　更新了android 1.5 sdk后，首先会遇到一个棘手问题，模拟器启动不了，控制台报“Failed to find an AVD compatible with target”错误。解决办法如下：

　　进入1.5 sdk目录下，－>tools->敲入命令“./android create avd -n my_android1.5 -t 2 ”，注意，win系统，无需前边得./ ，会创建出“my_android1.5” avd文件，然后到ide环境下，run一个项目，系统提示选择一个avd ,选择你刚刚创建得“my_android1.5”，即可。以下是操作截图

　　这里我创建了三个avd，分别对应1.5 1.1 googleApi

　　一个很酷得功能在创建avd文件得第二步，控制台提示“是否自定义自己得设备”，默认选项是"no",如果输入 "y",接下来可以一步步根据提示，定制自己得模拟器性能参数。比较有意思，参数表如下：

Characteristic		Description		Property
Device ram size		The amount of physical RAM on the device, in megabytes. Default value is "96".		hw.ramSize
Touch-screen support		Whether there is a touch screen or not on the device. Default value is "yes".		hw.touchScreen
Trackball support		Whether there is a trackball on the device. Default value is "yes".		hw.trackBall
Keyboard support		Whether the device has a QWERTY keyboard. Default value is "yes".		hw.keyboard
DPad support		Whether the device has DPad keys. Default value is "yes".		hw.dPad
GSM modem support		Whether there is a GSM modem in the device. Default value is "yes".		hw.gsmModem
Camera support		Whether the device has a camera. Default value is "no".		hw.camera
Maximum horizontal camera pixels		Default value is "640".		hw.camera.maxHorizontalPixels
Maximum vertical camera pixels		Default value is "480".		hw.camera.maxVerticalPixels
GPS support		Whether there is a GPS in the device. Default value is "yes".		hw.gps
Battery support		Whether the device can run on a battery. Default value is "yes".		hw.battery
Accelerometer		Whether there is an accelerometer in the device. Default value is "yes".		hw.accelerometer
Audio recording support		Whether the device can record audio. Default value is "yes".		hw.audioInput
Audio playback support		Whether the device can play audio. Default value is "yes".		hw.audioOutput
SD Card support		Whether the device supports insertion/removal of virtual SD Cards. Default value is "yes".		hw.sdCard
Cache partition support		Whether we use a /cache partition on the device. Default value is "yes".		disk.cachePartition
Cache partition size		Default value is "66MB".		disk.cachePartition.size

　　这个工具得其他操作方法：

Usage:
        android [global options] action [action options]

Global options:
        -h --help         This help.
        -s --silent         Silent mode: only errors are printed out.
        -v --verbose   Verbose mode: errors, warnings and informational messages are pr
        inted.

Valid actions are composed of a verb and an optional direct object:
        -     list         : Lists existing targets or virtual devices.
        -     list avd         : Lists existing Android Virtual Devices.
        -     list target : Lists existing targets.
        - create avd     : Creates a new Android Virtual Device.
        -     move avd     : Moves or renames an Android Virtual Device.
        - delete avd     : Deletes an Android Virtual Device.
        - update avd     : Updates an Android Virtual Device to match the folders of a ne
        w SDK.
        - create project: Creates a new Android Project.
        - update project: Updates an Android Project (must have an AndroidManifest.xml).

Action "list ":
        Lists existing targets or virtual devices.
        Options:
        No options

Action "list avd":
        Lists existing Android Virtual Devices.
        Options:
        No options

Action "list target":
        Lists existing targets.
        Options:
        No options

Action "create avd":
        Creates a new Android Virtual Device.
        Options:
        -t --target     Target id of the new AVD [required]
        -c --sdcard     Path to a shared SD card image, or size of a new sdcard for the
        new AVD
        -p --path     Location path of the directory where the new AVD will be created

-n --name     Name of the new AVD [required]
        -f --force     Force creation (override an existing AVD)
        -s --skin     Skin of the new AVD

Action "move avd":
        Moves or renames an Android Virtual Device.
        Options:
        -p --path     New location path of the directory where to move the AVD
        -n --name     Name of the AVD to move or rename [required]
        -r --rename     New name of the AVD to rename

Action "delete avd":
        Deletes an Android Virtual Device.
        Options:
        -n --name     Name of the AVD to delete [required]

Action "update avd":
        Updates an Android Virtual Device to match the folders of a new SDK.
        Options:
        -n --name     Name of the AVD to update [required]

Action "create project":
        Creates a new Android Project.
        Options:
        -k --package     Package name [required]
        -n --name     Project name
        -a --activity Activity name [required]
        -t --target    Target id of the new project [required]
        -p --path     Location path of new project [required]

Action "update project":
        Updates an Android Project (must have an AndroidManifest.xml).
        Options:
        -t --target     Target id to set for the project [required]
        -p --path     Location path of the project [required]

-n --name     Project name

　　“本文由华清远见https://www.embedu.org/index.htm提供”