Невозможно преобразовать тип Java для типа Yail

Question

Я пытаюсь построить расширение для AppInventor, но когда я исполню ant extensions я получаю эту ошибку:

[javac] An annotation processor threw an uncaught exception.

[javac] Consult the following stack trace for details.

[javac] java.lang.RuntimeException: Cannot convert Java type 'android.content.Context' to Yail type

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Полный журнал ошибок:

[javac] 
    [javac] An annotation processor threw an uncaught exception. 
    [javac] Consult the following stack trace for details. 
    [javac] java.lang.RuntimeException: Cannot convert Java type 'android.content.Context' to Yail type 
    [javac]  at com.google.appinventor.components.scripts.ComponentProcessor.javaTypeToYailType(ComponentProcessor.ja 
va:1184) 
    [javac]  at com.google.appinventor.components.scripts.ComponentDescriptorGenerator.outputParameters(ComponentDesc 
riptorGenerator.java:208) 
    [javac]  at com.google.appinventor.components.scripts.ComponentDescriptorGenerator.outputBlockMethod(ComponentDes 
criptorGenerator.java:187) 
    [javac]  at com.google.appinventor.components.scripts.ComponentDescriptorGenerator.outputComponent(ComponentDescr 
iptorGenerator.java:125) 
    [javac]  at com.google.appinventor.components.scripts.ComponentDescriptorGenerator.outputResults(ComponentDescrip 
torGenerator.java:226) 
    [javac]  at com.google.appinventor.components.scripts.ComponentProcessor.process(ComponentProcessor.java:731) 
    [javac]  at com.sun.tools.javac.processing.JavacProcessingEnvironment.callProcessor(JavacProcessingEnvironment.ja 
va:794) 
    [javac]  at com.sun.tools.javac.processing.JavacProcessingEnvironment.discoverAndRunProcs(JavacProcessingEnvironm 
ent.java:705) 
    [javac]  at com.sun.tools.javac.processing.JavacProcessingEnvironment.access$1800(JavacProcessingEnvironment.java 
:91) 
    [javac]  at com.sun.tools.javac.processing.JavacProcessingEnvironment$Round.run(JavacProcessingEnvironment.java:1 
035) 
    [javac]  at com.sun.tools.javac.processing.JavacProcessingEnvironment.doProcessing(JavacProcessingEnvironment.jav 
a:1176) 
    [javac]  at com.sun.tools.javac.main.JavaCompiler.processAnnotations(JavaCompiler.java:1170) 
    [javac]  at com.sun.tools.javac.main.JavaCompiler.compile(JavaCompiler.java:856) 
    [javac]  at com.sun.tools.javac.main.Main.compile(Main.java:523) 
    [javac]  at com.sun.tools.javac.main.Main.compile(Main.java:381) 
    [javac]  at com.sun.tools.javac.main.Main.compile(Main.java:370) 
    [javac]  at com.sun.tools.javac.main.Main.compile(Main.java:361) 
    [javac]  at com.sun.tools.javac.Main.compile(Main.java:56) 
    [javac]  at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
    [javac]  at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) 
    [javac]  at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) 
    [javac]  at java.lang.reflect.Method.invoke(Method.java:498) 
    [javac]  at org.apache.tools.ant.taskdefs.compilers.Javac13.execute(Javac13.java:58) 
    [javac]  at org.apache.tools.ant.taskdefs.Javac.compile(Javac.java:1395) 
    [javac]  at org.apache.tools.ant.taskdefs.Javac.execute(Javac.java:1121) 
    [javac]  at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:293) 
    [javac]  at sun.reflect.GeneratedMethodAccessor4.invoke(Unknown Source) 
    [javac]  at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) 
    [javac]  at java.lang.reflect.Method.invoke(Method.java:498) 
    [javac]  at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:106) 
    [javac]  at org.apache.tools.ant.Task.perform(Task.java:348) 
    [javac]  at org.apache.tools.ant.taskdefs.Sequential.execute(Sequential.java:68) 
    [javac]  at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:293) 
    [javac]  at sun.reflect.GeneratedMethodAccessor4.invoke(Unknown Source) 
    [javac]  at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) 
    [javac]  at java.lang.reflect.Method.invoke(Method.java:498) 
    [javac]  at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:106) 
    [javac]  at org.apache.tools.ant.Task.perform(Task.java:348) 
    [javac]  at org.apache.tools.ant.taskdefs.MacroInstance.execute(MacroInstance.java:402) 
    [javac]  at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:293) 
    [javac]  at sun.reflect.GeneratedMethodAccessor4.invoke(Unknown Source) 
    [javac]  at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) 
    [javac]  at java.lang.reflect.Method.invoke(Method.java:498) 
    [javac]  at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:106) 
    [javac]  at org.apache.tools.ant.Task.perform(Task.java:348) 
    [javac]  at org.apache.tools.ant.Target.execute(Target.java:435) 
    [javac]  at org.apache.tools.ant.Target.performTasks(Target.java:456) 
    [javac]  at org.apache.tools.ant.Project.executeSortedTargets(Project.java:1405) 
    [javac]  at org.apache.tools.ant.helper.SingleCheckExecutor.executeTargets(SingleCheckExecutor.java:38) 
    [javac]  at org.apache.tools.ant.Project.executeTargets(Project.java:1260) 
    [javac]  at org.apache.tools.ant.taskdefs.Ant.execute(Ant.java:441) 
    [javac]  at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:293) 
    [javac]  at sun.reflect.GeneratedMethodAccessor4.invoke(Unknown Source) 
    [javac]  at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) 
    [javac]  at java.lang.reflect.Method.invoke(Method.java:498) 
    [javac]  at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:106) 
    [javac]  at org.apache.tools.ant.Task.perform(Task.java:348) 
    [javac]  at org.apache.tools.ant.Target.execute(Target.java:435) 
    [javac]  at org.apache.tools.ant.Target.performTasks(Target.java:456) 
    [javac]  at org.apache.tools.ant.Project.executeSortedTargets(Project.java:1405) 
    [javac]  at org.apache.tools.ant.Project.executeTarget(Project.java:1376) 
    [javac]  at org.apache.tools.ant.helper.DefaultExecutor.executeTargets(DefaultExecutor.java:41) 
    [javac]  at org.apache.tools.ant.Project.executeTargets(Project.java:1260) 
    [javac]  at org.apache.tools.ant.Main.runBuild(Main.java:857) 
    [javac]  at org.apache.tools.ant.Main.startAnt(Main.java:236) 
    [javac]  at org.apache.tools.ant.launch.Launcher.run(Launcher.java:287) 
    [javac]  at org.apache.tools.ant.launch.Launcher.main(Launcher.java:113) 

BUILD FAILED 
D:\appinventor-sources\appinventor\build.xml:37: The following error occurred while executing this line: 
D:\appinventor-sources\appinventor\components\build.xml:343: The following error occurred while executing this line: 
D:\appinventor-sources\appinventor\components\build.xml:230: Compile failed; see the compiler error output for details. 

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Файл, вызывающий эту ошибку, находится здесь:

https://github.com/barreeeiroo/appinventor-sources/blob/master/appinventor/components/src/com/google/appinventor/components/runtime/VersionName.java

Я думаю, что линия: import android.content.Context; на линии 24

Когда я построить расширение, нет никакой ошибки в этом файле, как если бы это была ошибка при импорте этой библиотеки, потому что я пытался import android.content.pm.Context, но он выходит из строя при чтении файла, так что я полагаю, что это ошибка Javac или Java

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Как я могу исправить это?

Answer 1

обычно вы получаете контекст как этот

public class TaifunTools extends AndroidNonvisibleComponent { 
    private static Context context; 
    private static final String LOG_TAG = "TaifunTools"; 

    public TaifunTools(ComponentContainer container) {  
    super(container.$form()); 
    this.container = container; 
    context = (Context) container.$context(); 
    } 

так позже вы будете использовать этот фрагмент кода, чтобы получить имя версия

@SimpleFunction(description = "Returns the version name of the app") 
    public String VersionName() { 
    Log.d(LOG_TAG, "VersionName"); 
    try { 
     PackageInfo pInfo = context.getPackageManager().getPackageInfo(context.getPackageName(), 0); 
     String version = pInfo.versionName; 
     return version; 
    } catch (NameNotFoundException e) { 
     Log.e(LOG_TAG, e.getMessage()); 
     e.printStackTrace(); 
     return ""; 
    } 
    } 

кстати. на вопросы о работе с источниками App Inventor, лучшее место, чтобы спросить в App Inventor Open Source forum ...

смотри также App Inventor Extensions document и смотреть в example extensions provided by MIT. ..