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 Android教程網 >> Android技術 >> 關於Android編程 >> Android問題集錦之四十七: Error:Execution failed for task ':app:packageRelease'. ) Unable to compute hash of

Android問題集錦之四十七: Error:Execution failed for task ':app:packageRelease'. ) Unable to compute hash of

編輯:關於Android編程

使用jna的jar包時混淆編譯遇到了這個問題,就在上面列出了jna相關的警告。
需要在proguard-rules.pro中制定編譯規則,將jna相關包的警告忽略。

-keep class com.sun.jna.** { *; }
-dontwarn com.sun.jna.**

注意,如果是以module引入的,需要在主app中的proguard-rules.pro文件中忽略。

原文如下:
All the current answers to this question are just giving the Proguard rules that worked for them, every fix will be different. First off, confirm it’s a Proguard problem by checking that the classes-proguard directory is somewhere in the error message, something like this: Unable to compute hash of /Users/Documents/projectX/app/build/intermediates/classes-proguard/release/classes.jar

This means it’s caused by an earlier Proguard error so you need to scroll up in the Messages window or Gradle Console window and check what warnings or errors you’re getting. Just as an example, in my current project, Square’s Picasso library is causing the error: Warning: com.squareup.picasso.OkHttpDownloader: can’t find referenced class com.squareup.okhttp.OkHttpClient. I just added -dontwarn com.squareup.okhttp.** to ignore the warnings, and the app still worked as normal.

A lot of the Proguard errors will be warnings about some class so just adding -dontwarn for whatever class is causing it in your project often works.

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