用于Android webview中图像保存的上下文菜单

Question

我倾注了类似的问题,但找不到答案.我希望能够长时间在我的webview中按下用户上传的图像来保存它们(就像你可以在浏览器中一样).有帮助吗？

更新:

现在使用我自己的自定义项目"保存图像"弹出上下文菜单.我甚至可以成功干杯msgs.我如何保存图像呢？长时间点击的图像是否会传递到我的菜单项？

        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);
          }
        }

Answer 1

首先注册WebView以获取上下文菜单,如下所示: 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,只需使用它