Function vm_attach 

pub fn vm_attach<'a>() -> Result<AttachGuard<'a>>

获取vm，将vm附加到当前线程，随后操作java虚拟机。

示例

use droid_wrap_utils::{vm_attach, Result};
fn main() -> Result<()> {
let mut env = vm_attach()?;
let class = env.find_class("java/lang/String");
dbg!(class)
}