<arg value="-keep class com.google.zxing.client.android.*Activity"/>
<arg value="-keep class com.google.zxing.client.android.ViewfinderView { public * ; }"/>
<arg value="-keep class com.google.zxing.client.android.book.SearchBookContents* { public * ; }"/>
+ <!-- This works around some strange Android/ProGuard problem verifying MaskUtil -->
+ <arg value="-keep class com.google.zxing.qrcode.encoder.MaskUtil { public * ; }"/>
<arg value="-target 5"/>
<arg value="-optimizationpasses 4"/>
<arg value="-dontshrink"/>