百度地图，高德地图在打包时都要混淆

APK打包时

百度地图需要加上：

-keep class com.baidu.mapapi.** {*; }
-keep class com.baidu.platform.** {*; }
-keep class com.baidu.location.** {*; }
-keep class com.baidu.vi.** {*; }
-keep class vi.com.gdi.bgl.android.** {*; }
-keep public class * extends android.support.v4.**
-keep public class * extends android.app.Fragment
-keep public class * extends android.app.Activity
-keep public class * extends android.app.Application
-keep public class * extends android.app.Service
-keep public class * extends android.content.BroadcastReceiver
-keep public class * extends android.content.ContentProvider
-keep public class * extends android.app.backup.BackupAgentHelper
-keep public class * extends android.preference.Preference