在Java匿名类中捕获抽象异常时出现Android VerifyError

我有一些奇怪的错误，我想知道会发生什么

首先，我在Android中使用片段对象的反射。要做到这一点，我必须捕捉反射异常

此代码有效：

try
{
    return (String) MyFragment.class.getMethod("aStaticMethod", new Class[]{MyActivity.class} ).invoke(null, myActivity);
}
catch(NoSuchMethodException e)
{
    return "fail";
}
catch(IllegalAccessException e)
{
    return "fail";
}
catch(InvocationTargetException e)
{
    return "fail";
}

try
{
    return (String) MyFragment.class.getMethod("aStaticMethod", new Class[]{MyActivity.class} ).invoke(null, myActivity);
}
catch(ReflectiveOperationException e)
{
    return "fail";
}

viewPager.setAdapter(new FragmentPagerAdapter(getSupportFragmentManager())
{
    @Override
    public CharSequence getPageTitle(int i)
    {
        try
        {
            return (String) MyFragment.class.getMethod("aStaticMethod", new Class[]{MyActivity.class} ).invoke(null, myActivity);
        }
        catch(ReflectiveOperationException e)
        {
            return "fail";
        }
    }
});

viewPager.setAdapter(new FragmentPagerAdapter(getSupportFragmentManager())
{
    @Override
    public CharSequence getPageTitle(int i)
    {
        try
        {
            return (String) MyFragment.class.getMethod("aStaticMethod", new Class[]{MyActivity.class} ).invoke(null, myActivity);
        }
        catch(NoSuchMethodException e)
        {
            return "fail";
        }
        catch(IllegalAccessException e)
        {
            return "fail";
        }
        catch(InvocationTargetException e)
        {
            return "fail";
        }
    }
});

但是，由于所有异常都是ReflectiveOperationException的子类，所以我只能创建一个异常处理程序

此代码有效：

try
{
    return (String) MyFragment.class.getMethod("aStaticMethod", new Class[]{MyActivity.class} ).invoke(null, myActivity);
}
catch(NoSuchMethodException e)
{
    return "fail";
}
catch(IllegalAccessException e)
{
    return "fail";
}
catch(InvocationTargetException e)
{
    return "fail";
}

try
{
    return (String) MyFragment.class.getMethod("aStaticMethod", new Class[]{MyActivity.class} ).invoke(null, myActivity);
}
catch(ReflectiveOperationException e)
{
    return "fail";
}

viewPager.setAdapter(new FragmentPagerAdapter(getSupportFragmentManager())
{
    @Override
    public CharSequence getPageTitle(int i)
    {
        try
        {
            return (String) MyFragment.class.getMethod("aStaticMethod", new Class[]{MyActivity.class} ).invoke(null, myActivity);
        }
        catch(ReflectiveOperationException e)
        {
            return "fail";
        }
    }
});

viewPager.setAdapter(new FragmentPagerAdapter(getSupportFragmentManager())
{
    @Override
    public CharSequence getPageTitle(int i)
    {
        try
        {
            return (String) MyFragment.class.getMethod("aStaticMethod", new Class[]{MyActivity.class} ).invoke(null, myActivity);
        }
        catch(NoSuchMethodException e)
        {
            return "fail";
        }
        catch(IllegalAccessException e)
        {
            return "fail";
        }
        catch(InvocationTargetException e)
        {
            return "fail";
        }
    }
});

此代码在作为普通Java函数的一部分时有效。然而，当我尝试在匿名类中使用它时，事情变得很棘手

此代码不起作用：

try
{
    return (String) MyFragment.class.getMethod("aStaticMethod", new Class[]{MyActivity.class} ).invoke(null, myActivity);
}
catch(NoSuchMethodException e)
{
    return "fail";
}
catch(IllegalAccessException e)
{
    return "fail";
}
catch(InvocationTargetException e)
{
    return "fail";
}

try
{
    return (String) MyFragment.class.getMethod("aStaticMethod", new Class[]{MyActivity.class} ).invoke(null, myActivity);
}
catch(ReflectiveOperationException e)
{
    return "fail";
}

viewPager.setAdapter(new FragmentPagerAdapter(getSupportFragmentManager())
{
    @Override
    public CharSequence getPageTitle(int i)
    {
        try
        {
            return (String) MyFragment.class.getMethod("aStaticMethod", new Class[]{MyActivity.class} ).invoke(null, myActivity);
        }
        catch(ReflectiveOperationException e)
        {
            return "fail";
        }
    }
});

viewPager.setAdapter(new FragmentPagerAdapter(getSupportFragmentManager())
{
    @Override
    public CharSequence getPageTitle(int i)
    {
        try
        {
            return (String) MyFragment.class.getMethod("aStaticMethod", new Class[]{MyActivity.class} ).invoke(null, myActivity);
        }
        catch(NoSuchMethodException e)
        {
            return "fail";
        }
        catch(IllegalAccessException e)
        {
            return "fail";
        }
        catch(InvocationTargetException e)
        {
            return "fail";
        }
    }
});

它编译得很顺利，但当应用程序达到这一行时，我得到了一个验证错误

然而，如果我不使用ReflectiveOperationException并求助于具体的类型，事情就会再次发生

此代码再次起作用：

try
{
    return (String) MyFragment.class.getMethod("aStaticMethod", new Class[]{MyActivity.class} ).invoke(null, myActivity);
}
catch(NoSuchMethodException e)
{
    return "fail";
}
catch(IllegalAccessException e)
{
    return "fail";
}
catch(InvocationTargetException e)
{
    return "fail";
}

try
{
    return (String) MyFragment.class.getMethod("aStaticMethod", new Class[]{MyActivity.class} ).invoke(null, myActivity);
}
catch(ReflectiveOperationException e)
{
    return "fail";
}

viewPager.setAdapter(new FragmentPagerAdapter(getSupportFragmentManager())
{
    @Override
    public CharSequence getPageTitle(int i)
    {
        try
        {
            return (String) MyFragment.class.getMethod("aStaticMethod", new Class[]{MyActivity.class} ).invoke(null, myActivity);
        }
        catch(ReflectiveOperationException e)
        {
            return "fail";
        }
    }
});

viewPager.setAdapter(new FragmentPagerAdapter(getSupportFragmentManager())
{
    @Override
    public CharSequence getPageTitle(int i)
    {
        try
        {
            return (String) MyFragment.class.getMethod("aStaticMethod", new Class[]{MyActivity.class} ).invoke(null, myActivity);
        }
        catch(NoSuchMethodException e)
        {
            return "fail";
        }
        catch(IllegalAccessException e)
        {
            return "fail";
        }
        catch(InvocationTargetException e)
        {
            return "fail";
        }
    }
});

---

我的问题是：发生了什么？这是Java或Android中的某种错误，还是我做了非法的事情？

ReflectiveOperationException

添加到API 19（KitKat）中，在API 19之前的任何设备上使用它都会导致

验证错误

，因为该类不存在