proguard Missing type parameter

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在使用GSON后，添加混淆打包后容易出现标题所述问题：

E/BrowserCrashHandler(8889): java.lang.RuntimeException: Missing type parameter.
E/BrowserCrashHandler(8889): at com.google.gson.reflect.TypeToken.getSuperclassTypeParameter(TypeToken.java:84)
E/BrowserCrashHandler(8889): at com.google.gson.reflect.TypeToken.<init>(TypeToken.java:62)

究其原因可以参考：http://stackoverflow.com/questions/8129040/proguard-missing-type-parameter

解决方法：在在 proguard.cfg中添加如下代码：

##---------------Begin: proguard configuration for Gson  ----------# Gson uses generic type information stored in a class file when working with fields. Proguard# removes such information by default, so configure it to keep all of it.-keepattributes Signature# Gson specific classes-keep class sun.misc.Unsafe { *; }#-keep class com.google.gson.stream.** { *; }# Application classes that will be serialized/deserialized over Gson-keep class com.google.gson.examples.android.model.** { *; }##---------------End: proguard configuration for Gson  ----------

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