关于OKHTTP和RX及其他三方包冲突的问题，Error: Program type already present: rx.android.BuildConfig

问题描述

1. Error: Program type already present:okio.AsyncTimeout；
2. Error: Program type already present: rx.android.BuildConfig；
3. Error: Program type already present: okio.Buffer$1；
4. Error: Program type already present: okhttp3.Authenticator$1；
5. Error: Program type already present: rx.android.BuildConfig；

解决方案

1、`

android {
      packagingOptions {
          exclude 'META-INF/LICENSE'
          exclude 'META-INF/NOTICE'
          exclude 'META-INF/rxjava.properties'
          exclude 'META-INF/rxandroid.properties'
         }
      }

2、

defaultConfig {
        multiDexEnabled true
    }

3、`

dependencies {
      configurations {
           /*all*.exclude group: 'com.squareup.okhttp3', module: 'okhttp'
           all*.exclude group: 'com.squareup.okio'*/
           all*.exclude group: 'com.squareup.okhttp3'
             all*.exclude group: 'com.squareup.okio'
        }
  }

4、调整jar引用的先后顺序。

5、在AndroidStudio控制台输入：

gradlew -q app:dependencies

查看依赖关系，之后删掉多余的依赖jar包。