用于在 Android 网页视图中保存图像的上下文菜单 [英] Context Menu for Image Saving in an Android webview

问题描述

我已经倾注了类似的问题，但找不到答案.我希望能够在我的 web 视图中长按用户上传的图像来保存它们(就像在浏览器中一样).有什么帮助吗?

I've poured over similar questions but can't find the answer. I want to be able to long press the user-uploaded images in my webview to save them (like you can in a browser). Any help?

更新:

上下文菜单现在弹出我自己的自定义项保存图像".我什至可以成功敬酒 msgs.我如何去保存图像?长按的图片是否会传递给我的菜单项?

The context menu is popping up now with my own custom item "Save Image". I can even successfully toast msgs. How do I go about saving the image though? Is the image that's being long clicked being passed to my menu item?

        public boolean onLongClick(View v) {
            openContextMenu(v);
            return true;
        }
        @Override
        public void onCreateContextMenu(ContextMenu menu, View v,
                            ContextMenu.ContextMenuInfo menuInfo) {
            super.onCreateContextMenu(menu, v, menuInfo);
            MenuInflater inflater = getMenuInflater();
            inflater.inflate(R.menu.context, menu);
        }
        @Override
        public boolean onContextItemSelected(MenuItem item) {
          AdapterContextMenuInfo info = (AdapterContextMenuInfo) item.getMenuInfo();
          switch (item.getItemId()) {
          case R.id.save_image:
              Toast.makeText(this, "save failed",
                    Toast.LENGTH_LONG).show();
              return true;
          default:
            return super.onContextItemSelected(item);
          }
        }

推荐答案

首先为上下文菜单注册 WebView，如下所示:activity.registerForContextMenu(webView)

First register the WebView for context menus like so: activity.registerForContextMenu(webView)

@Override
protected void onCreateContextMenu(ContextMenu menu) {
    super.onCreateContextMenu(menu);

    HitTestResult result = getHitTestResult();

    MenuItem.OnMenuItemClickListener handler = new MenuItem.OnMenuItemClickListener() {
        public boolean onMenuItemClick(MenuItem item) {
                // do the menu action
                return true;
        }
    };

    if (result.getType() == HitTestResult.IMAGE_TYPE ||
            result.getType() == HitTestResult.SRC_IMAGE_ANCHOR_TYPE) {

        menu.setHeaderTitle(result.getExtra());
        menu.add(0, ID_SAVEIMAGE, 0, "Save Image").setOnMenuItemClickListener(handler);
    }

要保存图像只需使用这个

这篇关于用于在 Android 网页视图中保存图像的上下文菜单的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！