That will update the ProGuard and building process should run without problems.Īfter that, you should be able to successfully build your Xamarin.Android app with ProGuard.Copy Code C:\Users\\AppData\Local\Android\android-sdk\tools\monitor.bat To fix this problem, you must download the most recent version of ProGuard ( here) and copy the contents of the.
(Can't process class (Unsupported class version number (maximum 51.0, Java 1.7))) When building, the Error List shows the following message: ErrorĬan't read In the file, custom ProGuard options can be inserted, such as -dontwarn, -keep class and others.Īs by now (April/2017), the Android SDK that is usually downloaded has an old version of ProGuard, which can cause errors when building the app using Java 1.8. cfg) and setting its Build Action to ProguardConfiguration, as in the picture below: If the developer wishes to further customize the ProGuard options, he/she can create a file in the project's root named proguard.cfg (other names are valid too, as long as the extension is. The three files are combined as configurations for ProGuard and they are automatically created by Xamarin when building. Xamarin.Android, by default, sets its own configurations for ProGuard, that can be found inside the folders obj/Debug/proguard or obj/Release/proguard, in the files proguard_project_primary.cfg, proguard_project_references.cfg and proguard_xamarin.cfg. This enables ProGuard when building your app.
How to use ProGuard in your Xamarin.Android appįirst, to enable ProGuard in your Xamarin.Android app, go to your project Properties -> Android Options -> Packaging -> Enable ProGuard, as in the print screen below: NET code, the developer should use Dotfuscator or similar tools. Be aware, however, that the ProGuard obfuscation applies only to Java code. ProGuard can be used too in Xamarin.Android apps, and also will reduce the APK file size and obfuscate the Java code. The resulting APK when using ProGuard will have a smaller size and will be harder to reverse-engineer (decompilation). ProGuard is a tool used in the building process to optimize and obfuscate the Java code of your APK, and also remove unused classes.
0 kommentar(er)
