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なんとなく Gradle コンソールを開けてみると死ぬほど書き出されてるエラーやワーニング.

AGPBI: {"kind":"error","text":"(org.apache.commons.beanutils.BeanMap$8) that doesn\u0027t come with an","sources":[{}]}
AGPBI: {"kind":"error","text":"associated EnclosingMethod attribute. This class was probably produced by a","sources":[{}]}
AGPBI: {"kind":"error","text":"compiler that did not target the modern .class file format. The recommended","sources":[{}]}
AGPBI: {"kind":"error","text":"solution is to recompile the class from source, using an up-to-date compiler","sources":[{}]}
AGPBI: {"kind":"error","text":"and without specifying any \"-target\" type options. The consequence of ignoring","sources":[{}]}
AGPBI: {"kind":"error","text":"this warning is that reflective operations on this class will incorrectly","sources":[{}]}
AGPBI: {"kind":"error","text":"indicate that it is *not* an inner class.","sources":[{}]}
AGPBI: {"kind":"error","text":"warning: Ignoring InnerClasses attribute for an anonymous inner class","sources":[{}]}
AGPBI: {"kind":"error","text":"(org.apache.commons.beanutils.BeanMap$9) that doesn\u0027t come with an","sources":[{}]}
AGPBI: {"kind":"error","text":"associated EnclosingMethod attribute. This class was probably produced by a","sources":[{}]}
AGPBI: {"kind":"error","text":"compiler that did not target the modern .class file format. The recommended","sources":[{}]}
AGPBI: {"kind":"error","text":"solution is to recompile the class from source, using an up-to-date compiler","sources":[{}]}
AGPBI: {"kind":"error","text":"and without specifying any \"-target\" type options. The consequence of ignoring","sources":[{}]}
AGPBI: {"kind":"error","text":"this warning is that reflective operations on this class will incorrectly","sources":[{}]}
AGPBI: {"kind":"error","text":"indicate that it is *not* an inner class.","sources":[{}]}
AGPBI: {"kind":"error","text":"warning: Ignoring InnerClasses attribute for an anonymous inner class","sources":[{}]}
AGPBI: {"kind":"error","text":"(org.apache.commons.beanutils.BeanMap$1) that doesn\u0027t come with an","sources":[{}]}
AGPBI: {"kind":"error","text":"associated EnclosingMethod attribute. This class was probably produced by a","sources":[{}]}
AGPBI: {"kind":"error","text":"compiler that did not target the modern .class file format. The recommended","sources":[{}]}
AGPBI: {"kind":"error","text":"solution is to recompile the class from s

いつから出ていたのかわかりません.

Proguard 周りなのでしょうが, 調べても意味がわかりませんでした.

が,

Large number of errors during Gradle build after upgrading to Android Studio 2.0 - Stack Overflow

意味のない warning や error は, .idea フォルダを消すことで取り除くことができます。このフォルダは Android Studio 1.5 が作成したもので 2.0 にインポートされています。消しても自動的に作成されます。

一度削除すると再作成されますが, 意味不明なログが吐かれなくなり, ビルド時間も数分から数十秒に激速となりました。

...

などと喜んでいたが, また出てる.

...

Issue Tacker を見てみる.

Issue 215748 - android - AGPBI reports errors instead of warnings - Android Open Source Project - Issue Tracker - Google Project Hosting

まだ生きてる issue なのですが, 一時しのぎとして以下とか.

# https://code.google.com/p/android/issues/detail?id=215748
-keepattributes Exceptions, Signature, InnerClasses, EnclosingMethod
-dontoptimize

一応出なくなりますけれども,

速くなりますけれども,

「don't optimize」て...

またはこんな一時しのぎ法も.

Issue 222989 - android - Android Studio 2.2 : Build successful with 1944 errors - Android Open Source Project - Issue Tracker - Google Project Hosting

It affects me too it is caused by gradle not android studio (but it tries to update the gradle)
Temporary solution:
I went back to gradle 2.1.3 (that I used earlier):

classpath 'com.android.tools.build:gradle:2.1.3' ->this works

If I am using classpath 'com.android.tools.build:gradle:2.2.0' I am also getting tons of warning message and the output is an unaligned file...

「com.android.tools.build:gradle のバージョンを下げる」という方法ですが, うまくダウングレードできないような...

なんなんすかね, まったく.

Issues - android - Android Open Source Project - Issue Tracker - Google Project Hosting

2016-10-05

待てないので以下でとりあえず対応.
AGPBI 関連の多量のエラーを排除する