当我尝试执行 ADT 插件步骤并需要一些帮助时，我遇到了这个问题。
错误如下：
Cannot complete the install because of a conflicting dependency.
Software being installed: Android Development Tools 15.0.1.v201111031820-219398 (com.android.ide.eclipse.adt.feature.group 15.0.1.v201111031820-219398)
Software currently installed: Eclipse SDK 3.7.1.M20110909-1335 (org.eclipse.sdk.ide 3.7.1.M20110909-1335)
Only one of the following can be installed at once:
International Components for Unicode for Java (ICU4J) 4.4.2.v20110208 (com.ibm.icu 4.4.2.v20110208)
International Components for Unicode for Java (ICU4J) 4.0.1.v20090822 (com.ibm.icu 4.0.1.v20090822)
International Components for Unicode for Java (ICU4J) 4.0.1.v20090415 (com.ibm.icu 4.0.1.v20090415)
Cannot satisfy dependency:
From: Android Development Tools 15.0.1.v201111031820-219398 (com.android.ide.eclipse.adt.feature.group 15.0.1.v201111031820-219398)
To: org.eclipse.wst.sse.ui 0.0.0
Cannot satisfy dependency:
From: Java EMF Model Utilities 2.0.200.v200905140200 (org.eclipse.jem.util 2.0.200.v200905140200)
To: bundle com.ibm.icu [3.8.1.1,4.1.0)
Cannot satisfy dependency:
From: Java EMF Model Utilities 2.0.201.v201001252130 (org.eclipse.jem.util 2.0.201.v201001252130)
To: bundle com.ibm.icu [3.8.1.1,4.1.0)
Cannot satisfy dependency:
From: Eclipse Platform 3.7.1.r37x_v20110729-9gF7UHOxFtniV7mI3T556iZN9AU8bEZ1lHMcVK (org.eclipse.platform.feature.group 3.7.1.r37x_v20110729-9gF7UHOxFtniV7mI3T556iZN9AU8bEZ1lHMcVK)
To: org.eclipse.rcp.feature.group [3.7.1.r37x_v20110729-9DB5FmNFnFLSFCtLxnRfMqt15A4A]
Cannot satisfy dependency:
From: Eclipse RCP 3.7.1.r37x_v20110729-9DB5FmNFnFLSFCtLxnRfMqt15A4A (org.eclipse.rcp.feature.group 3.7.1.r37x_v20110729-9DB5FmNFnFLSFCtLxnRfMqt15A4A)
To: com.ibm.icu [4.4.2.v20110208]
Cannot satisfy dependency:
From: Eclipse Project SDK 3.7.1.r37x_v20110728-7Q7xAEDDePtVvBAYYD3z-il0ox7CoGe6mz-B8FDdVn0YR (org.eclipse.sdk.feature.group 3.7.1.r37x_v20110728-7Q7xAEDDePtVvBAYYD3z-il0ox7CoGe6mz-B8FDdVn0YR)
To: org.eclipse.platform.feature.group [3.7.1.r37x_v20110729-9gF7UHOxFtniV7mI3T556iZN9AU8bEZ1lHMcVK]
Cannot satisfy dependency:
From: Eclipse SDK 3.7.1.M20110909-1335 (org.eclipse.sdk.ide 3.7.1.M20110909-1335)
To: org.eclipse.sdk.feature.group [3.7.1.r37x_v20110728-7Q7xAEDDePtVvBAYYD3z-il0ox7CoGe6mz-B8FDdVn0YR]
Cannot satisfy dependency:
From: Common Frameworks 1.1.300.v200904160730 (org.eclipse.wst.common.frameworks 1.1.300.v200904160730)
To: bundle org.eclipse.jem.util [2.0.100,3.0.0)
Cannot satisfy dependency:
From: Structured Source Editor 1.1.101.v200908261807 (org.eclipse.wst.sse.ui 1.1.101.v200908261807)
To: bundle org.eclipse.wst.validation [1.2.0,1.3.0)
Cannot satisfy dependency:
From: Structured Source Editor 1.1.102.v200910200227 (org.eclipse.wst.sse.ui 1.1.102.v200910200227)
To: bundle org.eclipse.wst.validation [1.2.0,1.3.0)
Cannot satisfy dependency:
From: Validation Framework 1.2.102.v200905201610 (org.eclipse.wst.validation 1.2.102.v200905201610)
To: bundle org.eclipse.wst.common.frameworks [1.1.200,2.0.0)
Cannot satisfy dependency:
From: Validation Framework 1.2.104.v200911120201 (org.eclipse.wst.validation 1.2.104.v200911120201)
To: bundle org.eclipse.wst.common.frameworks [1.1.200,2.0.0)
理想情况下，我建议下载较低版本的 eclipse（低于 3.7）。但 3.7 工作正常。
如果你现在刚刚设置你的 android sdk...你不应该遇到这个问题。
如果您通过以下方式更新Android环境
你可以按照以下步骤操作
帮助 > 检查更新
并接受条款并安装更新。
删除 adt 插件并按照开发人员站点中的建议重新安装：http://developer.android.com/sdk/eclipse-adt.html http://developer.android.com/sdk/eclipse-adt.html
现在它将安装 Eclipse 支持的 Android 工具，例如 DDMS 等（版本 15.0....）
那应该可以解决你的问题。
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