android - Proguard (Android) を介したリリース出力に失敗する

Question

アプリケーションはデバッグ モードで正しく実行され、問題はありません。ただし、アプリをリリースしようとすると、以下の警告が表示されます。

  Warning:android.support.v4.media.session.MediaSessionCompatApi22: can't find referenced method 'void setRatingType(int)' in library class android.media.session.MediaSession
  Warning:android.support.v4.view.accessibility.AccessibilityNodeInfoCompatApi22: can't find referenced method 'android.view.accessibility.AccessibilityNodeInfo getTraversalBefore()' in library class android.view.accessibility.AccessibilityNodeInfo
  Warning:android.support.v4.view.accessibility.AccessibilityNodeInfoCompatApi22: can't find referenced method 'void setTraversalBefore(android.view.View)' in library class android.view.accessibility.AccessibilityNodeInfo
  Warning:android.support.v4.view.accessibility.AccessibilityNodeInfoCompatApi22: can't find referenced method 'void setTraversalBefore(android.view.View,int)' in library class android.view.accessibility.AccessibilityNodeInfo
  Warning:android.support.v4.view.accessibility.AccessibilityNodeInfoCompatApi22: can't find referenced method 'android.view.accessibility.AccessibilityNodeInfo getTraversalAfter()' in library class android.view.accessibility.AccessibilityNodeInfo
  Warning:android.support.v4.view.accessibility.AccessibilityNodeInfoCompatApi22: can't find referenced method 'void setTraversalAfter(android.view.View)' in library class android.view.accessibility.AccessibilityNodeInfo
  Warning:android.support.v4.view.accessibility.AccessibilityNodeInfoCompatApi22: can't find referenced method 'void setTraversalAfter(android.view.View,int)' in library class android.view.accessibility.AccessibilityNodeInfo
  Warning:there were 7 unresolved references to library class members.
         You probably need to update the library versions.
     (http://proguard.sourceforge.net/manual/troubleshooting.html#unresolvedlibraryclassmember)
:app:proguardRelease FAILED

FAILURE: Build failed with an exception.

検索で、このリンクとこのリンクが見つかりました。

そう、でもI changed the compileSdkVersion & targetSdkVersion from 21 to 22うまくいかない！

その他の gradle の詳細:

    compileSdkVersion 21
    buildToolsVersion "22.0.1"
    minSdkVersion 15
    targetSdkVersion 21 

---

buildTypes {

    debug {

        buildConfigField "String", "key", "\"value\""
    }
    release {

        minifyEnabled true
        proguardFiles getDefaultProguardFile('proguard_file.txt')

        buildConfigField "String", "key", "\"value\""

    }

}

私のミスなのか、それとも他のイベントが起こったのか!?

Answer 1

これをプロガードファイルに入れます -dontwarn android.support.v4.**