1

例如，使用此处的 groovyshell-example 应用程序动态加载以下代码：https ://github.com/pieces029/grooidshell-example/tree/update/build-tools-and-scripts ：

def class Outer {
    def class Inner {}
}
new Outer.Inner()

结果 Android Emulator API 23

Result = Outer$Inner@a9ea1cd

结果 Android Emulator API 24

Result = null

API 24 中的堆栈跟踪

08-13 02:23:03.233 3147-3147/me.champeau.groovydroid E/GrooidShell: Dynamic loading failed!
    BUG! exception in phase 'semantic analysis' in source unit 'script14710549832242032452851.groovy' throw with null exception
        at org.codehaus.groovy.control.CompilationUnit.applyToSourceUnits(CompilationUnit.java:935)
        at org.codehaus.groovy.control.CompilationUnit.doPhaseOperation(CompilationUnit.java:593)
        at org.codehaus.groovy.control.CompilationUnit.compile(CompilationUnit.java:542)
        at groovy.lang.GroovyClassLoader.doParseClass(GroovyClassLoader.java:298)
        at groovy.lang.GroovyClassLoader.parseClass(GroovyClassLoader.java:268)
        at groovy.lang.GroovyClassLoader.parseClass(GroovyClassLoader.java:254)
        at groovy.lang.GroovyClassLoader.parseClass(GroovyClassLoader.java:211)
        at groovy.lang.GroovyClassLoader.parseClass(GroovyClassLoader.java:221)
        at me.champeau.groovydroid.GrooidShell.evaluate(GrooidShell.java:85)
        at me.champeau.groovydroid.GroovyActivity.generateMessage(GroovyActivity.groovy:38)
        at me.champeau.groovydroid.GroovyActivity.executeCode(GroovyActivity.groovy:31)
        at java.lang.reflect.Method.invoke(Native Method)
        at android.view.View$DeclaredOnClickListener.onClick(View.java:4693)
        at android.view.View.performClick(View.java:5610)
        at android.view.View$PerformClick.run(View.java:22260)
        at android.os.Handler.handleCallback(Handler.java:751)
        at android.os.Handler.dispatchMessage(Handler.java:95)
        at android.os.Looper.loop(Looper.java:154)
        at android.app.ActivityThread.main(ActivityThread.java:6077)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:865)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:755)
     Caused by: java.lang.NullPointerException: throw with null exception
        at java.net.URLClassLoader.findClass(URLClassLoader.java:371)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:380)
        at groovy.lang.GroovyClassLoader.loadClass(GroovyClassLoader.java:677)
        at groovy.lang.GroovyClassLoader.loadClass(GroovyClassLoader.java:545)
        at org.codehaus.groovy.control.ClassNodeResolver.tryAsLoaderClassOrScript(ClassNodeResolver.java:185)
        at org.codehaus.groovy.control.ClassNodeResolver.findClassNode(ClassNodeResolver.java:170)
        at org.codehaus.groovy.control.ClassNodeResolver.resolveName(ClassNodeResolver.java:126)
        at org.codehaus.groovy.control.ResolveVisitor.resolveToOuter(ResolveVisitor.java:676)
        at org.codehaus.groovy.control.ResolveVisitor.resolve(ResolveVisitor.java:308)
        at org.codehaus.groovy.control.ResolveVisitor.resolveNestedClass(ResolveVisitor.java:341)
        at org.codehaus.groovy.control.ResolveVisitor.resolve(ResolveVisitor.java:308)
        at org.codehaus.groovy.control.ResolveVisitor.resolve(ResolveVisitor.java:276)
        at org.codehaus.groovy.control.ResolveVisitor.resolveOrFail(ResolveVisitor.java:260)
        at org.codehaus.groovy.control.ResolveVisitor.resolveOrFail(ResolveVisitor.java:272)
        at org.codehaus.groovy.control.ResolveVisitor.transformConstructorCallExpression(ResolveVisitor.java:1047)
        at org.codehaus.groovy.control.ResolveVisitor.transform(ResolveVisitor.java:706)
        at org.codehaus.groovy.ast.ClassCodeExpressionTransformer.visitExpressionStatement(ClassCodeExpressionTransformer.java:142)
        at org.codehaus.groovy.ast.stmt.ExpressionStatement.visit(ExpressionStatement.java:42)
        at org.codehaus.groovy.ast.CodeVisitorSupport.visitBlockStatement(CodeVisitorSupport.java:37)
        at org.codehaus.groovy.ast.ClassCodeVisitorSupport.visitBlockStatement(ClassCodeVisitorSupport.java:166)
        at org.codehaus.groovy.control.ResolveVisitor.visitBlockStatement(ResolveVisitor.java:1318)
        at org.codehaus.groovy.ast.stmt.BlockStatement.visit(BlockStatement.java:71)
        at org.codehaus.groovy.ast.ClassCodeVisitorSupport.visitClassCodeContainer(ClassCodeVisitorSupport.java:104)
        at org.codehaus.groovy.ast.ClassCodeVisitorSupport.visitConstructorOrMethod(ClassCodeVisitorSupport.java:115)
        at org.codehaus.groovy.ast.ClassCodeExpressionTransformer.visitConstructorOrMethod(ClassCodeExpressionTransformer.java:53)
08-13 02:23:03.234 3147-3147/me.champeau.groovydroid E/GrooidShell:     at org.codehaus.groovy.control.ResolveVisitor.visitConstructorOrMethod(ResolveVisitor.java:201)
        at org.codehaus.groovy.ast.ClassCodeVisitorSupport.visitMethod(ClassCodeVisitorSupport.java:126)
        at org.codehaus.groovy.ast.ClassNode.visitContents(ClassNode.java:1078)
        at org.codehaus.groovy.ast.ClassCodeVisitorSupport.visitClass(ClassCodeVisitorSupport.java:53)
        at org.codehaus.groovy.control.ResolveVisitor.visitClass(ResolveVisitor.java:1261)
        at org.codehaus.groovy.control.ResolveVisitor.startResolving(ResolveVisitor.java:176)
        at org.codehaus.groovy.control.CompilationUnit$11.call(CompilationUnit.java:651)
        at org.codehaus.groovy.control.CompilationUnit.applyToSourceUnits(CompilationUnit.java:931)
            ... 21 more
4

1 回答 1

0

该项目中包含的 DX 库版本为 1.7。通过打开包含在最新（24.1.1）构建工具中的 dx.jar 文件，我能知道的最好的地方是 1.12。我猜想类似于 Java 的向后兼容性保持不变，但较低版本不会在较新版本上运行。

在那张纸条上，我猜有人刚刚将 dx jar 发布到中央，这不是谷歌官方发布的。我认为最好的办法是引用您正在编译的构建工具中包含的 jar。

于 2016-08-17T13:15:43.470 回答