java.lang.ClassNotFoundException

Android studio

引入第三方包运行项目时出现java.lang.ClassNotFoundException错误，包冲突多次引入

解决方案：

新建application 集成MultiDexApplication

    `public class MultiDexApplication extends Application {

     @Override

    protected void attachBaseContext(Context base) {

    super.attachBaseContext(base);

        MultiDex.install(this);

    }

    }`

build.gradle配置

    defaultConfig {

    multiDexEnabled true

    }

    lintOptions {

        checkReleaseBuilds false

        abortOnError false

    }

    dexOptions {

        javaMaxHeapSize "4g"

    }

    packagingOptions {

        exclude 'META-INF/rxjava.properties'

        exclude 'META-INF/rxjava'

    }