mvn clean install在我的android项目中运行时遇到以下问题：
[INFO] Scanning for projects...
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building my-project 3.0-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO]
[INFO] --- maven-android-plugin:2.6.0:generate-sources (default-generate-sources) @ my-project ---
[INFO] ANDROID-904-002: Found aidl files: Count = 0
[INFO] ANDROID-904-002: Found aidl files: Count = 0
[INFO] Copying local resource files to combined resource directory.
[INFO] C:\dev\Android\android-sdk\platforms\android-7/tools/aapt [package, -m, -J, C:\dev\workspace\my-project\target\generated-sources\r, -M, C:\dev\workspace\my-project\AndroidManifest.xml, -S, C:\dev\workspace\my-project\target\generated-sources\combined-resources\res, -I, C:\dev\Android\android-sdk\platforms\android-7\android.jar]
[INFO] The system cannot find the path specified.
[ERROR] Error when generating sources.
org.apache.maven.plugin.MojoExecutionException:
at com.jayway.maven.plugins.android.phase01generatesources.GenerateSourcesMojo.generateR(GenerateSourcesMojo.java:293)
at com.jayway.maven.plugins.android.phase01generatesources.GenerateSourcesMojo.execute(GenerateSourcesMojo.java:109)
at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:107)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:209)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:153)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:145)
at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:84)
at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:59)
at org.apache.maven.lifecycle.internal.LifecycleStarter.singleThreadedBuild(LifecycleStarter.java:183)
at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:161)
at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:319)
at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:156)
at org.apache.maven.cli.MavenCli.execute(MavenCli.java:534)
at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:196)
at org.apache.maven.cli.MavenCli.main(MavenCli.java:141)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:290)
at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:230)
at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:409)
at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:352)
Caused by: com.jayway.maven.plugins.android.ExecutionException: ANDROID-040-001: Could not execute: Command = cmd.exe /X /C "C:\dev\Android\android-sdk\platforms\android-7\tools\aapt package -m -J C:\dev\workspace\my-project\target\generated-sources\r -M C:\dev\workspace\my-project\AndroidManifest.xml -S C:\dev\workspace\my-project\target\generated-sources\combined-resources\res -I C:\dev\Android\android-sdk\platforms\android-7\android.jar", Result = 1
at com.jayway.maven.plugins.android.CommandExecutor$Factory$1.executeCommand(CommandExecutor.java:186)
at com.jayway.maven.plugins.android.phase01generatesources.GenerateSourcesMojo.generateR(GenerateSourcesMojo.java:291)
... 22 more
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 1.795s
[INFO] Finished at: Sun Jun 10 21:17:23 EEST 2012
[INFO] Final Memory: 17M/221M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal com.jayway.maven.plugins.android.generation2:maven-android-plugin:2.6.0:generate-sources (default-generate-sources) on project my-project: MojoExecutionException: ANDROID-040-001: Could not execute: Command = cmd.exe /X /C "C:\dev\Android\android-sdk\platforms\android-7\tools\aapt package -m -J C:\dev\workspace\my-project\target\generated-sources\r -M C:\dev\workspace\my-project\AndroidManifest.xml -S C:\dev\workspace\my-project\target\generated-sources\combined-resources\res -I C:\dev\Android\android-sdk\platforms\android-7\android.jar", Result = 1 -> [Help 1]
这个路径 `C:\dev\Android\android-sdk\platforms\android-7/tools/`` 有问题吗？如果是，如何修改？aapt 位于 C:\dev\Android\android-sdk\platform-tools，为什么要在这个位置搜索呢？
我的 pom-xml 文件：
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>org.my.project</groupId>
<version>3.0-SNAPSHOT</version>
<artifactId>my-project</artifactId>
<packaging>apk</packaging>
<dependencies>
<dependency>
<groupId>com.google.android</groupId>
<artifactId>android</artifactId>
<version>2.2.1</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>com.google.android</groupId>
<artifactId>android-test</artifactId>
<version>2.2.1</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.10</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.mockito</groupId>
<artifactId>mockito-all</artifactId>
<version>1.8.5</version>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>com.jayway.maven.plugins.android.generation2</groupId>
<artifactId>maven-android-plugin</artifactId>
<version>2.6.0</version>
<configuration>
<sdk>
<platform>7</platform>
</sdk>
<emulator>
<avd>cccc</avd>
</emulator>
<deleteConflictingFiles>true</deleteConflictingFiles>
<undeployBeforeDeploy>true</undeployBeforeDeploy>
</configuration>
<extensions>true</extensions>
</plugin>
<plugin>
<artifactId>maven-compiler-plugin</artifactId>
<version>2.3.2</version>
</plugin>
</plugins>
</build>
</project>