android studio编译报错

1、Error:Execution failed for task ':app:transformResourcesWithMergeJavaResForOnlineDebug'.

android studio编译时报错，具体如下：

Error:Execution failed for task ':app:transformResourcesWithMergeJavaResForOnlineDebug'.
> com.android.build.api.transform.TransformException: com.android.builder.packaging.DuplicateFileException: Duplicate files copied in APK META-INF/rxjava.properties
	File1: C:\Users\ps\.gradle\caches\modules-2\files-2.1\io.reactivex.rxjava2\rxjava\2.1.0\2fdf84dedcaaeabb9d70cde9dbb8aad4eccb80a1\rxjava-2.1.0.jar
	File2: C:\Users\ps\.gradle\caches\modules-2\files-2.1\io.reactivex\rxjava\1.1.5\ece7b5d0870e66d8226dab6dcf47a2b12afff061\rxjava-1.1.5.jar

解决办法：

在app.gradle中

	android{
		...
		
		//为解决部分三方库重复打包META-INF的问题
		packagingOptions {
			exclude 'META-INF/rxjava.properties'
		}
		
		...
	}

 

2、Error:A problem occurred configuring root project 'Cash_app_android'.

编译时报错如下：

Error:A problem occurred configuring root project 'AnyCash_app_android'.
> Could not resolve all files for configuration ':classpath'.
   > Could not download maven-ant-tasks.jar (org.apache.maven:maven-ant-tasks:2.1.3)
      > Could not get resource 'https://jcenter.bintray.com/org/apache/maven/maven-ant-tasks/2.1.3/maven-ant-tasks-2.1.3.jar'.
         > Could not GET 'https://jcenter.bintray.com/org/apache/maven/maven-ant-tasks/2.1.3/maven-ant-tasks-2.1.3.jar'.
            > Connect to d29vzk4ow07wi7.cloudfront.net:443 [d29vzk4ow07wi7.cloudfront.net/143.204.132.100, d29vzk4ow07wi7.cloudfront.net/143.204.132.53, d29vzk4ow07wi7.cloudfront.net/143.204.132.57, d29vzk4ow07wi7.cloudfront.net/143.204.132.159] failed: Read timed out
   > Could not download backport-util-concurrent.jar (backport-util-concurrent:backport-util-concurrent:3.1)
      > Could not get resource 'https://jcenter.bintray.com/backport-util-concurrent/backport-util-concurrent/3.1/backport-util-concurrent-3.1.jar'.
         > Could not GET 'https://jcenter.bintray.com/backport-util-concurrent/backport-util-concurrent/3.1/backport-util-concurrent-3.1.jar'.
            > Read timed out

解决办法：

        在项目的gradle中加入mavenCentral()

  

buildscript {
    repositories {
        jcenter()
        mavenCentral()
        maven { url "https://dl.bintray.com/thelasterstar/maven/" }
        maven { url 'https://jitpack.io'}
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:2.3.1'
        classpath 'com.jfrog.bintray.gradle:gradle-bintray-plugin:1.6'
        classpath 'com.github.dcendents:android-maven-gradle-plugin:1.4.1'
        //渠道包
        classpath 'com.meituan.android.walle:plugin:1.1.5'
    }
}