libgdxソースコードのビルドエラーは、私がLibgdxのソースコードを設定し、トラブルを抱えているタイプ

Question

に解決することはできません、私が続いてきたこれらの両方のセットアップガイド：私はダウンロードした https://github.com/libgdx/libgdx/wiki/Setting-up-your-Development-Environment-%28Eclipse%2C-Intellij-IDEA%2C-NetBeans%29

https://github.com/libgdx/libgdx/wiki/Running-demos-%26-tests

ソース、最新バージョンのJDKを持っていて、アンドロイド25用のAndroid SDKをインストールしておいて、他のすべてのステップを（私が正しく知っている限り）実行しましたが、試してもlibgdxセットアップに何千ものエラーがあります清掃と再建。エラーは、すべて「タイプに解決できません」という行に沿っています。誰かが私が台無しにしたかもしれないステップを知っていますか？

また、実行中のデモページで言及していなかった "ant"を実行しようとしましたが、それでも問題は解決していません。

私はJava 8 JDKを使用していますが、libgdxはまだJava 7になっていますか？

Description Resource Path Location Type 
AnimationCallback cannot be resolved to a type GwtApplication.java /gdx-backends-gwt/src/com/badlogic/gdx/backends/gwt line 214 Java Problem 
AnimationScheduler cannot be resolved GamepadSupport.java /gdx-controllers-gwt/src/com/badlogic/gdx/controllers/gwt/support line 143 Java Problem 
AnimationScheduler cannot be resolved GamepadSupport.java /gdx-controllers-gwt/src/com/badlogic/gdx/controllers/gwt/support line 156 Java Problem 
AnimationScheduler cannot be resolved GwtApplication.java /gdx-backends-gwt/src/com/badlogic/gdx/backends/gwt line 214 Java Problem 
AnimationScheduler cannot be resolved GwtApplication.java /gdx-backends-gwt/src/com/badlogic/gdx/backends/gwt line 223 Java Problem 
AnimationScheduler cannot be resolved to a type GamepadSupport.java /gdx-controllers-gwt/src/com/badlogic/gdx/controllers/gwt/support line 136 Java Problem 
ArrayBuffer cannot be resolved to a type DirectByteBuffer.java /gdx-backends-gwt/src/com/badlogic/gdx/backends/gwt/emu/java/nio line 43 Java Problem 
ArrayBuffer cannot be resolved to a type DirectByteBuffer.java /gdx-backends-gwt/src/com/badlogic/gdx/backends/gwt/emu/java/nio line 47 Java Problem 
ArrayBuffer cannot be resolved to a type DirectReadOnlyByteBuffer.java /gdx-backends-gwt/src/com/badlogic/gdx/backends/gwt/emu/java/nio line 41 Java Problem 
ArrayBuffer cannot be resolved to a type DirectReadWriteByteBuffer.java /gdx-backends-gwt/src/com/badlogic/gdx/backends/gwt/emu/java/nio line 41 Java Problem 
ArrayBuffer cannot be resolved to a type DirectReadWriteByteBuffer.java /gdx-backends-gwt/src/com/badlogic/gdx/backends/gwt/emu/java/nio line 49 Java Problem 
ArrayBuffer cannot be resolved to a type WebGLRenderingContext.java /gdx-backends-gwt/src/com/google/gwt/webgl/client line 569 Java Problem 
ArrayBuffer cannot be resolved to a type WebGLRenderingContext.java /gdx-backends-gwt/src/com/google/gwt/webgl/client line 577 Java Problem 
ArrayBufferNative cannot be resolved DirectByteBuffer.java /gdx-backends-gwt/src/com/badlogic/gdx/backends/gwt/emu/java/nio line 40 Java Problem 
ArrayBufferView cannot be resolved to a type DirectByteBuffer.java /gdx-backends-gwt/src/com/badlogic/gdx/backends/gwt/emu/java/nio line 52 Java Problem 
ArrayBufferView cannot be resolved to a type DirectReadOnlyFloatBufferAdapter.java /gdx-backends-gwt/src/com/badlogic/gdx/backends/gwt/emu/java/nio line 138 Java Problem 
ArrayBufferView cannot be resolved to a type DirectReadOnlyIntBufferAdapter.java /gdx-backends-gwt/src/com/badlogic/gdx/backends/gwt/emu/java/nio line 138 Java Problem 
ArrayBufferView cannot be resolved to a type DirectReadOnlyShortBufferAdapter.java /gdx-backends-gwt/src/com/badlogic/gdx/backends/gwt/emu/java/nio line 137 Java Problem 
ArrayBufferView cannot be resolved to a type DirectReadWriteFloatBufferAdapter.java /gdx-backends-gwt/src/com/badlogic/gdx/backends/gwt/emu/java/nio line 155 Java Problem 
ArrayBufferView cannot be resolved to a type DirectReadWriteIntBufferAdapter.java /gdx-backends-gwt/src/com/badlogic/gdx/backends/gwt/emu/java/nio line 153 Java Problem 
ArrayBufferView cannot be resolved to a type DirectReadWriteShortBufferAdapter.java /gdx-backends-gwt/src/com/badlogic/gdx/backends/gwt/emu/java/nio line 155 Java Problem 
ArrayBufferView cannot be resolved to a type GwtGL20.java /gdx-backends-gwt/src/com/badlogic/gdx/backends/gwt line 881 Java Problem 
ArrayBufferView cannot be resolved to a type GwtGL20.java /gdx-backends-gwt/src/com/badlogic/gdx/backends/gwt line 882 Java Problem 
ArrayBufferView cannot be resolved to a type GwtGL20.java /gdx-backends-gwt/src/com/badlogic/gdx/backends/gwt line 929 Java Problem 
ArrayBufferView cannot be resolved to a type GwtGL20.java /gdx-backends-gwt/src/com/badlogic/gdx/backends/gwt line 930 Java Problem 
ArrayBufferView cannot be resolved to a type HasArrayBufferView.java /gdx-backends-gwt/src/com/badlogic/gdx/backends/gwt/emu/java/nio line 23 Java Problem 
ArrayBufferView cannot be resolved to a type ScreenUtils.java /gdx-backends-gwt/src/com/badlogic/gdx/backends/gwt/emu/com/badlogic/gdx/utils line 89 Java Problem 
ArrayBufferView cannot be resolved to a type WebGLRenderingContext.java /gdx-backends-gwt/src/com/google/gwt/webgl/client line 565 Java Problem 
ArrayBufferView cannot be resolved to a type WebGLRenderingContext.java /gdx-backends-gwt/src/com/google/gwt/webgl/client line 573 Java Problem 
ArrayBufferView cannot be resolved to a type WebGLRenderingContext.java /gdx-backends-gwt/src/com/google/gwt/webgl/client line 829 Java Problem 

Answer 1

Javaビルドパスに必要な.jarsファイルを追加しましたか？

「プロジェクト」→「ビルドパス」→「ビルドパスの設定」を右クリックしてEclipseに必要なJARファイルを追加します。 「ライブラリ」タブで、「JARの追加」または「外部JARの追加」をクリックし、JARを指定します。