android studio引入第三方源包我想当做library使用它，结果报错了

Error:Execution failed for task ':app:prepareDebugDependencies'.

Dependency Error. See console for details

laucherActivity是我引入进去的包，如何在我自己的MainActivity中调用他啊，大神求指教

下面是gradle

debug:

---

第一个gradle

Groovy...
dependencies {
    compile fileTree(dir: 'libs', include: ['*.jar'])
    compile 'com.android.support:appcompat-v7:22.2.0'
    compile project(':launcherActivity')
}

第二个gradle

Groovyapply plugin: 'com.android.library'
defaultConfig {
//        applicationId "com.handmark.pulltorefresh.samples"
          ...
}
...

按照上面的更正两个项目的Gradle文件应该就可以了