* What went wrong:
Execution failed for task ':app:transformResourcesWithMergeJavaResForDebug'.
> com.android.build.api.transform.TransformException: com.android.builder.packaging.DuplicateFileException: Duplicate files copied in APK META-INF/LICENSE
File1: C:\AndroidStudio\Umer_Doctor\app\libs\httpmime-4.3.5.jar
File2: C:\AndroidStudio\Umer_Doctor\app\libs\httpcore-4.3.2.jar
* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output.
这个是当时抛出的异常信息，很奇怪，应该是第三方包文件冲突，下面是解决方案（如果有更了解的人欢迎详细解说下，互相学习）
packagingOptions { exclude 'META-INF/DEPENDENCIES.txt' exclude 'META-INF/LICENSE.txt' exclude 'META-INF/NOTICE.txt' exclude 'META-INF/NOTICE' exclude 'META-INF/LICENSE' exclude 'META-INF/DEPENDENCIES' exclude 'META-INF/notice.txt' exclude 'META-INF/license.txt' exclude 'META-INF/dependencies.txt' exclude 'META-INF/LGPL2.1' }