http://blog.csdn.net/FlyRabbit_1/article/details/74536317

Error:org.gradle.api.internal.tasks.DefaultTaskInputs$TaskInputUnionFileCollection cannot be cast to org.gradle.api.internal.file.collections.DefaultConfigurableFileCollection
Possible causes for this unexpected error include:<ul><li>Gradle's dependency cache may be corrupt (this sometimes occurs after a network connection timeout.)
<a href="syncProject">Re-download dependencies and sync project (requires network)</a></li><li>The state of a Gradle build process (daemon) may be corrupt. Stopping all Gradle daemons may solve this problem.
<a href="stopGradleDaemons">Stop Gradle build processes (requires restart)</a></li><li>Your project may be using a third-party plugin which is not compatible with the other plugins in the project or the version of Gradle requested by the project.</li></ul>In the case of corrupt Gradle processes, you can also try closing the IDE and then killing all Java processes.

Error:org.gradle.api.internal.tasks.DefaultTaskInputs$TaskInputUnionFileCollection
cannot be cast to
org.gradle.api.internal.file.collections.DefaultConfigurableFileCollection

Possible causes for this unexpected error
include:<ul><li>Gradle's dependency cache may be corrupt
(this sometimes occurs after a network connection timeout.)
<a href="syncProject">Re-download dependencies and sync project
(requires network)</a></li><li>The state of a Gradle
build process (daemon) may be corrupt. Stopping all Gradle daemons may
solve this problem.

<a href="stopGradleDaemons">Stop Gradle build processes
(requires restart)</a></li><li>Your project may be
using a third-party plugin which is not compatible with the other
plugins in the project or the version of Gradle requested by the
project.</li></ul>In
the case of corrupt Gradle processes, you can also try closing the IDE
and then killing all Java processes.

解决方法：将

buildscript {

    repositories {

        jcenter()

    }

    dependencies {

        classpath 'com.android.tools.build:gradle:2.3.3'

        // NOTE: Do not place your application dependencies here; they belong

        // in the individual module build.gradle files

    }

}

 classpath 'com.android.tools.build:gradle:2.3.3'

要与Android stduio 的版本号保持一致即可