E/dalvikvm: Could not find class

在app下build.gradle添加

 1.buildTypes {    release {        minifyEnabled false        proguardFiles getDefaultProguardFile("proguard-android.txt"), "proguard-rules.pro"           }}

2.在application添加
@Overrideprotected void attachBaseContext(Context base) {    super.attachBaseContext(base);    MultiDex.install(this);}
原文链接：http://blog.csdn.net/u011005173/article/details/52232221