摇篮完成与非零退出值1（ic_launcher.png：错误：重复的文件）

我得到这个与gradle这个奇怪的错误，请帮我！

I got this strange error with gradle, please help me!

/.../app/build/intermediates/res/debug/drawable-xxhdpi-v4/ic_launcher.png:
    error: Duplicate file
/.../app/build/intermediates/res/debug/drawable-xxhdpi/ic_launcher.png:
    Original is here. The version qualifier may be implied.
Error:Execution failed for task ':app:processDebugResources'.
com.android.ide.common.process.ProcessException: org.gradle.process.internal.ExecException:
Process 'command '/.../sdk/build-tools/22.0.1/aapt'' finished with non-zero exit value 1

这是正常操作之前，但因为我把classpath中的 com.android.tools.build:gradle:1.2.2 ，这使我的错误