Tycho找不到Android开发工具包

Question

我正在尝试构建一个插件+功能，它依赖于com.android.ide.eclipse.adt包。对于我添加ADT库到主pom.xml：

<repository> 
    <id>adt</id> 
    <layout>p2</layout> 
    <url>http://dl-ssl.google.com/android/eclipse</url> 
</repository> 

现在构建失败，此错误：

[INFO] Adding repository http://dl-ssl.google.com/android/eclipse 
[INFO] Fetching site.xml (0B of 1,8kB at 0B/s) from http://dl-ssl.google.com/android/eclipse/ 
[INFO] 1 operation remaining. 
[INFO] Fetching site.xml (1,8kB of 1,8kB at 0B/s) from http://dl-ssl.google.com/android/eclipse/ 
[INFO] Adding repository http://dl-ssl.google.com/android/eclipse 
[INFO] Resolving dependencies of MavenProject: me.fixpoint.eared:me.fixpoint.eared.plugin:0.0.4-SNAPSHOT @ D:\Projects\eared\plugin\pom.xml 
[INFO] Cannot complete the request. Generating details. 
[INFO] Cannot complete the request. Generating details. 
[INFO] {osgi.ws=win32, osgi.os=win32, osgi.arch=x86_64, org.eclipse.update.install.features=true} 
[ERROR] Cannot resolve project dependencies: 
[ERROR] Software being installed: me.fixpoint.eared 0.4.0 
[ERROR] Missing requirement: me.fixpoint.eared 0.4.0 requires 'bundle com.android.ide.eclipse.adt 0.0.0' but it could not be found 
[ERROR] 
[ERROR] Internal error: java.lang.RuntimeException: "No solution found because the problem is unsatisfiable.": ["Unable to satisfy dependency from me.fixpoint.eared 0.4.0 to bundle com.android.ide.eclipse.adt 0.0.0.", "No solution found because the problem is unsatisfiable."] -> [Help 1] 
org.apache.maven.InternalErrorException: Internal error: java.lang.RuntimeException: "No solution found because the problem is unsatisfiable.": ["Unable to satisfy dependency from me.fixpoint.eared 0.4.0 to bundle com.android.ide.eclipse.adt 0.0.0.", "No solution found because the problem is unsatisfiable."] 

我试着从以下这个线程建议：https://groups.google.com/group/adt-dev/tree/browse_frm/month/2012-07/39c71d32169b9569?rnum=51&_done=/group/adt-dev/browse_frm/month/2012-07?&pli=1和创建P2更新网址为http://dl.dropbox.com/u/1236385/adt，但错误是一样的：

[INFO] Adding repository http://dl.dropbox.com/u/1236385/adt 
[INFO] Fetching content.jar (0B of 18,09kB at 0B/s) from http://dl.dropbox.com/u/1236385/adt/ 
[INFO] 1 operation remaining. 
[INFO] Fetching content.jar (3,97kB of 18,09kB at 0B/s) from http://dl.dropbox.com/u/1236385/adt/ 
[INFO] Adding repository http://dl.dropbox.com/u/1236385/adt 
[INFO] Fetching artifacts.jar (0B of 783B at 0B/s) from http://dl.dropbox.com/u/1236385/adt/ 
[INFO] 1 operation remaining. 
[INFO] Fetching artifacts.jar (783B of 783B at 0B/s) from http://dl.dropbox.com/u/1236385/adt/ 
[INFO] Resolving dependencies of MavenProject: me.fixpoint.eared:me.fixpoint.eared.plugin:0.0.4-SNAPSHOT @ D:\Projects\eared\plugin\pom.xml 
[INFO] Cannot complete the request. Generating details. 
[INFO] Cannot complete the request. Generating details. 
[INFO] {osgi.ws=win32, osgi.os=win32, osgi.arch=x86_64, org.eclipse.update.install.features=true} 
[ERROR] Cannot resolve project dependencies: 
[ERROR] Software being installed: me.fixpoint.eared 0.4.0 
[ERROR] Missing requirement: me.fixpoint.eared 0.4.0 requires 'bundle com.android.ide.eclipse.adt 0.0.0' but it could not be found 
[ERROR] 
[ERROR] Internal error: java.lang.RuntimeException: "No solution found because the problem is unsatisfiable.": ["Unable to satisfy dependency from me.fixpoint.eared 0.4.0 to bundle com.android.ide.eclipse.adt 0.0.0.", "No solution found because the problem is unsatisfiable."] -> [Help 1] 
org.apache.maven.InternalErrorException: Internal error: java.lang.RuntimeException: "No solution found because the problem is unsatisfiable.": ["Unable to satisfy dependency from me.fixpoint.eared 0.4.0 to bundle com.android.ide.eclipse.adt 0.0.0.", "No solution found because the problem is unsatisfiable."] 

为什么不能找到com.android.ide.eclipse.adt？

以防万一，here's link to the master POM。

Answer 1

旧式更新站点只有关于工件依赖关系的不完整元数据。然而，Tycho需要依赖关系解析机制的完整依赖元数据，因此不能使用旧式更新站点。收件箱网站可能处于现代p2存储库格式，但它包含相同的不完整元数据。 （在第2讲中，这些元数据不完整的条目称为“部分IU”）。在Tycho 0.18.0之前，这些部分IU被无声地丢弃，导致了所述的解决问题。这在Tycho 0.18.0中得到了改进：自该版本以来，Tycho失败，并显示一条错误消息，指向包含不完整元数据的存储库。

要解决您的问题，最好要求项目提供一个合适的p2存储库。 p2提供不同的publisher applications来做到这一点。理论上，您也可以自己调用发布程序应用程序，但这应该只是临时解决方法。