Browser 长按之后的处理

最新推荐文章于 2024-04-18 11:44:25 发布

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本文介绍如何为Android中的WebView定制上下文菜单，包括根据不同类型的点击事件显示相应的菜单项，如电话号码、电子邮件链接、地理位置等，并实现跳转、分享等功能。

@Override
    public void onCreateContextMenu(ContextMenu menu, View v,
            ContextMenuInfo menuInfo) {
        WebView webview = (WebView) v;
        WebView.HitTestResult result = webview.getHitTestResult();
        if (result == null) {
            return;
        }

        int type = result.getType();
        if (type == WebView.HitTestResult.UNKNOWN_TYPE) {
            Log.w(LOGTAG,
                    "We should not show context menu when nothing is touched");
            return;
        }
        if (type == WebView.HitTestResult.EDIT_TEXT_TYPE) {
            // let TextView handles context menu
            return;
        }

        // Note, http://b/issue?id=1106666 is requesting that
        // an inflated menu can be used again. This is not available
        // yet, so inflate each time (yuk!)
        MenuInflater inflater = getMenuInflater();
        inflater.inflate(R.menu.browsercontext, menu);

        // Show the correct menu group
        String extra = result.getExtra();
        menu.setGroupVisible(R.id.PHONE_MENU,
                type == WebView.HitTestResult.PHONE_TYPE);
        menu.setGroupVisible(R.id.EMAIL_MENU,
                type == WebView.HitTestResult.EMAIL_TYPE);
        menu.setGroupVisible(R.id.GEO_MENU,
                type == WebView.HitTestResult.GEO_TYPE);
        menu.setGroupVisible(R.id.IMAGE_MENU,
                type == WebView.HitTestResult.IMAGE_TYPE
                || type == WebView.HitTestResult.SRC_IMAGE_ANCHOR_TYPE);
        menu.setGroupVisible(R.id.ANCHOR_MENU,
                type == WebView.HitTestResult.SRC_ANCHOR_TYPE
                || type == WebView.HitTestResult.SRC_IMAGE_ANCHOR_TYPE);

        // Setup custom handling depending on the type
        switch (type) {
            case WebView.HitTestResult.PHONE_TYPE:
                menu.setHeaderTitle(Uri.decode(extra));
                menu.findItem(R.id.dial_context_menu_id).setIntent(
                        new Intent(Intent.ACTION_VIEW, Uri
                                .parse(WebView.SCHEME_TEL + extra)));
                Intent addIntent = new Intent(Intent.ACTION_INSERT_OR_EDIT);
                addIntent.putExtra(Insert.PHONE, Uri.decode(extra));
                addIntent.setType(Contacts.People.CONTENT_ITEM_TYPE);
                menu.findItem(R.id.add_contact_context_menu_id).setIntent(
                        addIntent);
                menu.findItem(R.id.copy_phone_context_menu_id).setOnMenuItemClickListener(
                        new Copy(extra));
                break;

            case WebView.HitTestResult.EMAIL_TYPE:
                menu.setHeaderTitle(extra);
                menu.findItem(R.id.email_context_menu_id).setIntent(
                        new Intent(Intent.ACTION_VIEW, Uri
                                .parse(WebView.SCHEME_MAILTO + extra)));
                menu.findItem(R.id.copy_mail_context_menu_id).setOnMenuItemClickListener(
                        new Copy(extra));
                break;

            case WebView.HitTestResult.GEO_TYPE:
                menu.setHeaderTitle(extra);
                menu.findItem(R.id.map_context_menu_id).setIntent(
                        new Intent(Intent.ACTION_VIEW, Uri
                                .parse(WebView.SCHEME_GEO
                                        + URLEncoder.encode(extra))));
                menu.findItem(R.id.copy_geo_context_menu_id).setOnMenuItemClickListener(
                        new Copy(extra));
                break;

            case WebView.HitTestResult.SRC_ANCHOR_TYPE:
            case WebView.HitTestResult.SRC_IMAGE_ANCHOR_TYPE:
                TextView titleView = (TextView) LayoutInflater.from(this)
                        .inflate(android.R.layout.browser_link_context_header,
                        null);
                titleView.setText(extra);
                menu.setHeaderView(titleView);
                // decide whether to show the open link in new tab option
                menu.findItem(R.id.open_newtab_context_menu_id).setVisible(
                        mTabControl.getTabCount() < TabControl.MAX_TABS);
                PackageManager pm = getPackageManager();
                Intent send = new Intent(Intent.ACTION_SEND);
                send.setType("text/plain");
                ResolveInfo ri = pm.resolveActivity(send, PackageManager.MATCH_DEFAULT_ONLY);
                menu.findItem(R.id.share_link_context_menu_id).setVisible(ri != null);
                if (type == WebView.HitTestResult.SRC_ANCHOR_TYPE) {
                    break;
                }
                // otherwise fall through to handle image part
            case WebView.HitTestResult.IMAGE_TYPE:
                if (type == WebView.HitTestResult.IMAGE_TYPE) {
                    menu.setHeaderTitle(extra);
                }
                menu.findItem(R.id.view_image_context_menu_id).setIntent(
                        new Intent(Intent.ACTION_VIEW, Uri.parse(extra)));
                menu.findItem(R.id.download_context_menu_id).
                        setOnMenuItemClickListener(new Download(extra));
                break;

            default:
                Log.w(LOGTAG, "We should not get here.");
                break;
        }
    }