重复引用依赖包解决方案

1.重复引用依赖包跑项目会存在以下报错问题（以重复引用zxing包为例子）
Error:Execution failed for task ':app:transformClassesWithDexForDebug'.
com.android.build.api.transform.TransformException: com.android.ide.common.process.ProcessException: java.util.concurrent.ExecutionException: com.android.dex.DexException: Multiple dex files define Lcom/google/zxing/BarcodeFormat;

2.解决方案
将compile ('cn.bingoogolapple:bga-qrcode-zxing:1.3.6')
改成这样
compile ('cn.bingoogolapple:bga-qrcode-zxing:1.3.6') {
exclude group: 'com.google.zxing', module: 'core'
}