ByteBuddy Android - 创建并调用具有特定名称的方法，该方法直接调用另一个方法

Question

这是对该线程的后续（尽管不同）问题： Java - Create anonymous Exception subclass with a certain name

我正在尝试向 Android 上的 Crashlytics 发送非崩溃错误报告，感谢 Rafael Winterhalter，我现在实现了它们在 Crashlytics UI 中显示在不同行中。这样做的要求是为每个 issueType 发送不同的 Exception 子类。

现在看起来像下面的屏幕截图。

下一个问题是它仍然没有真正一眼看出实际的异常类型是什么。相反，它只显示发送错误的函数名。现在了解了 Byte Buddy 的魔力后，我想——也许甚至可以在自定义 Exception 子类中创建一个静态函数，直接调用 Crashlytics.logException 函数。我已经看到可以使用拦截器类（然后从那里调用代码），但我猜 Crashlytics 将始终在此拦截器中显示函数名称。

是否可以创建一个名为issueType 的静态方法并让它直接调用Crashlytics.logException？

这是我目前更新的代码：

public static void craslyticsRecordError(String issueType, String errorMsg)
{
    // byte buddy needs a private directory
    File filesDir = GameApplication.getAppContext().getFilesDir();
    String dirPath = filesDir.getAbsolutePath() + File.separator + "ByteBuddy";
    File byteBuddyPrivateDirectory = new File(dirPath);
    if (!byteBuddyPrivateDirectory.exists())
    {
        byteBuddyPrivateDirectory.mkdirs();
    }
    GameLog.d("ByteBuddyDir:" + byteBuddyPrivateDirectory);

    try
    {
        // dynamically create an exception with 'issueType' as its class name and also create method
        // that has this name, so that Crashlytics will show that name
        Class<? extends Exception> dynamicType = new ByteBuddy()
                .subclass(Exception.class)
                .name(issueType)
                .defineMethod(issueType, void.class, Ownership.STATIC, Visibility.PUBLIC)
                .withParameters(Throwable.class)
                .intercept(MethodCall.invoke(Crashlytics.class.getMethod("logException", Throwable.class)))
                .make() // line of crash
                .load(Fabric.class.getClassLoader(), new AndroidClassLoadingStrategy.Wrapping(byteBuddyPrivateDirectory))
                .getLoaded();

        Exception e = dynamicType.getConstructor(String.class).newInstance(errorMsg);

        Method method = Crashlytics.class.getMethod(issueType, Exception.class);
        method.invoke(null, e);
    }
    catch (Exception e1)
    {
        Exception e = new Exception(issueType + "-" + errorMsg);
        Crashlytics.logException(e);
        e1.printStackTrace();
    }
}

崩溃堆栈跟踪：

java.lang.IllegalStateException: public static void com.crashlytics.android.Crashlytics.logException(java.lang.Throwable) does not take 0 arguments
    at net.bytebuddy.implementation.MethodCall$Appender.apply(MethodCall.java:1998)
    at net.bytebuddy.dynamic.scaffold.TypeWriter$MethodPool$Record$ForDefinedMethod$WithBody.applyCode(TypeWriter.java:620)
    at net.bytebuddy.dynamic.scaffold.TypeWriter$MethodPool$Record$ForDefinedMethod$WithBody.applyBody(TypeWriter.java:609)
    at net.bytebuddy.dynamic.scaffold.TypeWriter$MethodPool$Record$ForDefinedMethod.apply(TypeWriter.java:526)
    at net.bytebuddy.dynamic.scaffold.TypeWriter$Default$ForCreation.create(TypeWriter.java:4159)
    at net.bytebuddy.dynamic.scaffold.TypeWriter$Default.make(TypeWriter.java:1633)
    at net.bytebuddy.dynamic.scaffold.subclass.SubclassDynamicTypeBuilder.make(SubclassDynamicTypeBuilder.java:174)
    at net.bytebuddy.dynamic.scaffold.subclass.SubclassDynamicTypeBuilder.make(SubclassDynamicTypeBuilder.java:155)
    at net.bytebuddy.dynamic.DynamicType$Builder$AbstractBase.make(DynamicType.java:2559)
    at net.bytebuddy.dynamic.DynamicType$Builder$AbstractBase$Delegator.make(DynamicType.java:2661)
    at org.utils.Fabric.craslyticsRecordError(Fabric.java:69)
    at android.os.MessageQueue.nativePollOnce(Native Method)
    at android.os.MessageQueue.next(MessageQueue.java:323)
    at android.os.Looper.loop(Looper.java:143)
    at android.app.ActivityThread.main(ActivityThread.java:7224)
    at java.lang.reflect.Method.invoke(Native Method)
    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1230)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1120)

Answer 1

是的，这当然是可能的，文档甚至包含一个示例。您可以按如下方式定义方法：

new ByteBuddy()
  .subclass(Exception.class)
  .defineMethod("issueType", void.class, Ownership.STATIC, Visibility.PUBLIC)
  .withParameters(Exception.class)
  .intercept(MethodCall.invoke(Crashalytics.getMethod("logException"))
                       .withArgument(0));

这将定义一个方法

public static void issueType(Exception e) {
  Crashalytics.logException(e);
}

在您生成的类中。