我尝试了一个android工作室。一开始没问题。当我执行包含许多 java 内容的活动时，它无法运行该程序。它有以下错误：
Gradle:
FAILURE: Build failed with an exception.
What went wrong:
Execution failed for task ':ImageCropper:compileDebug'.
Compilation failed; see the compiler error output for details.
Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output.
Could not execute build using Gradle distribution 'http://services.gradle.org/distributions/gradle-1.6-bin.zip'.
在我评论代码之后就可以了。代码没有问题。如何处理？