在Android的WebView的右键菜单图像保存 [英] Context Menu for Image Saving in an Android webview

问题描述

我已经浇过类似的问题，但无法找到答案。我希望能够长期preSS在我的WebView用户上传的图片保存它们（就像你可以在一个浏览器）。任何帮助？

更新：

上下文菜单现在雨后春笋般冒出来跟我自己的自定义项保存图像。我甚至可以成功地敬酒封邮件。我怎么去，虽然保存图像？是，正在被长时间点击图像传递给我的菜单项？

 公共布尔onLongClick（视图v）{
            openContextMenu（五）;
            返回true;
        }
        @覆盖
        公共无效onCreateContextMenu（文本菜单菜单，视图V，
                            ContextMenu.ContextMenuInfo menuInfo）{
            super.onCreateContextMenu（菜单，V，menuInfo）;
            MenuInflater充气= getMenuInflater（）;
            inflater.inflate（R.menu.context，菜单）;
        }
        @覆盖
        公共布尔onContextItemSelected（菜单项项）{
          AdapterContextMenuInfo信息=（AdapterContextMenuInfo）item.getMenuInfo（）;
          开关（item.getItemId（））{
          案例R.id.save_image：
              Toast.makeText（这一点，保存失败，
                    Toast.LENGTH_LONG）.show（）;
              返回true;
          默认：
            返回super.onContextItemSelected（项目）;
          }
        }
 

解决方案

首先注册的WebView像这样的上下文菜单： activity.registerForContextMenu（web视图）

  @覆盖
保护无效onCreateContextMenu（文本菜单菜单）{
    super.onCreateContextMenu（菜单）;

    HitTestResult结果= getHitTestResult（）;

    MenuItem.OnMenuItemClickListener处理器=新MenuItem.OnMenuItemClickListener（）{
        公共布尔onMenuItemClick（菜单项项）{
                //做的菜单操作
                返回true;
        }
    };

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

        menu.setHeaderTitle（result.getExtra（））;
        menu.add（0，ID_SAVEIMAGE，0，保存图像）setOnMenuItemClickListener（处理）。
    }
 

要保存你的图像<一个href="http://stackoverflow.com/questions/3474448/saving-image-webview-android/3475772#3475772">simply使用此

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?

Update:

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);
          }
        }

解决方案

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);
    }

To save you images simply use this

这篇关于在Android的WebView的右键菜单图像保存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！