on device '????????????': adb rejected install command with: device not found

但在eclipse中run会提示一下错误:
Failed to install helloworld.apk on device '????????????': adb rejected install command with: device not found
com.android.ddmlib.AdbCommandRejectedException: device not found
Launch canceled!

解决方法如下:

以C8812为例

拨号:*#*#2846579#*#*
ProjectMenu->后台设置->USB端口配置->Google 模式

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