Android Studio Webview不调用图片库

<WebView
    android:id="@+id/webView"
    android:layout_width="match_parent"
    android:layout_height="match_parent" />

WebView webView = findViewById(R.id.webView);
webView.getSettings().setJavaScriptEnabled(true);
webView.getSettings().setAllowFileAccess(true);

Button selectImageButton = findViewById(R.id.selectImageButton);
selectImageButton.setOnClickListener(new View.OnClickListener() {
    @Override
    public void onClick(View v) {
        openImagePicker();
    }
});

private void openImagePicker() {
    Intent intent = new Intent(Intent.ACTION_PICK, MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
    startActivityForResult(intent, PICK_IMAGE_REQUEST);
}

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    super.onActivityResult(requestCode, resultCode, data);
    if (requestCode == PICK_IMAGE_REQUEST && resultCode == RESULT_OK && data != null) {
        Uri selectedImageUri = data.getData();
        // 在WebView中显示选择的图片
        webView.loadUrl(selectedImageUri.toString());
    }
}