You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: android.rs
    path of file: ./repos/webbrowser-rs/src
    
    the code of the file until where you have to start completion: use crate::{Browser, BrowserOptions, Error, ErrorKind, Result, TargetType};
use jni::objects::{JObject, JValue};
use std::process::{Command, Stdio};

/// Deal with opening of browsers on Android. Only [Browser::Default] is supported, and
/// in options, only [BrowserOptions::dry_run] is honoured.
pub(super) fn open_browser_internal(
    browser: Browser,
    target: &TargetType,
    options: &BrowserOptions,
) -> Result<()> {
    // ensure we're opening only http/https urls, failing otherwise
    let url = target.get_http_url()?;

    match browser {
        Browser::Default => open_browser_default(url, options),
        _ => Err(Error::new(
            ErrorKind::NotFound,
            "only default browser supported",
        )),
    }
}

/// Open the default browser
fn open_browser_default(url: &str, options: &BrowserOptions) -> Result<()> {
    // always return true for a dry run
    if options.dry_run {
        return Ok(());
    }

    // first we try to see if we're in a termux env, because if we are, then
    // the android context may not have been initialized, and it'll panic
    if try_for_termux(url, options).is_ok() {
        return Ok(());
    }

    // Create a VM for executing Java calls
    let ctx = ndk_context::android_context();
    let vm = unsafe { jni::JavaVM::from_raw(ctx.vm() as _) }.map_err(|_| {
        Error::new(
            ErrorKind::NotFound,
            "Expected to find JVM via ndk_context crate",
        )
    })?;

    let activity = unsafe { jni::objects::JObject::from_raw(ctx.context() as _) };
    let mut env = vm
        .attach_current_thread()
        .map_err(|_| Error::new(ErrorKind::Other, "Failed to attach current thread"))?;

    // Create ACTION_VIEW object
    let intent_class = env
        .find_class("android/content/Intent")
        .map_err(|_| Error::new(ErrorKind::NotFound, "Failed to find Intent class"))?;
    let action_view = env
        .get_static_field(&intent_class, "ACTION_VIEW", "Ljava/lang/String;")
        .map_err(|_| Error::new(ErrorKind::NotFound, "Failed to get intent.ACTION_VIEW"))?;

    // Create Uri object
    let uri_class = env
        .find_class("android/net/Uri")
        .map_err
    
fn open_browser_default(url: &str, options: &BrowserOptions) -> Result<()> {
    // always return true for a dry run
    if options.dry_run {
        return Ok(());
    }

    // first we try to see if we're in a termux env, because if we are, then
    // the android context may not have been initialized, and it'll panic
    if try_for_termux(url, options).is_ok() {
        return Ok(());
    }

    // Create a VM for executing Java calls
    let ctx = ndk_context::android_context();
    let vm = unsafe { jni::JavaVM::from_raw(ctx.vm() as _) }.map_err(|_| {
        Error::new(
            ErrorKind::NotFound,
            "Expected to find JVM via ndk_context crate",
        )
    })?;

    let activity = unsafe { jni::objects::JObject::from_raw(ctx.context() as _) };
    let mut env = vm
        .attach_current_thread()
        .map_err(|_| Error::new(ErrorKind::Other, "Failed to attach current thread"))?;

    // Create ACTION_VIEW object
    let intent_class = env
        .find_class("android/content/Intent")
        .map_err(|_| Error::new(ErrorKind::NotFound, "Failed to find Intent class"))?;
    let action_view = env
        .get_static_field(&intent_class, "ACTION_VIEW", "Ljava/lang/String;")
        .map_err(|_| Error::new(ErrorKind::NotFound, "Failed to get intent.ACTION_VIEW"))?;

    // Create Uri object
    let uri_class = env
        .find_class("android/net/Uri")
        .map_err(|_| Error::new(ErrorKind::NotFound, "Failed to find Uri class"))?;
    let url = env
        .new_string(url)
        .map_err(|_| Error::new(ErrorKind::Other, "Failed to create JNI string"))?;
    let uri = env
        .call_static_method(
            &uri_class,
            "parse",
            "(Ljava/lang/String;)Landroid/net/Uri;",
            &[JValue::Object(&JObject::from(url))],
        )
        .map_err(|_| Error::new(ErrorKind::Other, "Failed to parse JNI Uri"))?;

    // Create new ACTION_VIEW intent with the uri
    let intent = env
        .alloc_object(&intent_class)
        .map_err(|_| Error::new(ErrorKind::Other, "Failed to allocate intent"))?;
    env.call_method(
        &intent,
        "<init>",
        "(Ljava/lang/String;Landroid/net/Uri;)V",
        &[action_view.borrow(), uri.borrow()],
    )
    .map_err(|_| Error::new(ErrorKind::Other, "Failed to initialize intent"))?;

    // Start the intent activity.
    env.call_method(
        &activity,
        "startActivity",
        "(Landroid/content/Intent;)V",
        &[JValue::Object(&intent)],
    )
    .map_err(|_| Error::new(ErrorKind::Other, "Failed to start activity"))?;

    Ok(())
}