WebVview学习记录

WebView 中获取网页图片

webview.setWebViewClient(new WebViewClient() {
    @Override
    public void onPageFinished(WebView view, String url) {
        super.onPageFinished(view, url);
        getWebViewImage();
        setWebImageClick(view);
    }

    private void getWebViewImage() {
        String jsString = "function getImages() {\n" +
                        "\tvar imgs = document.getElementsByTagName('img');\n" +
                        "\tvar imgScr = '';\n" +
                        "\tfor (var i = 0; i < imgs.length; i++) {\n" +
                        "\t\tif (i == 0) {\n" +
                        "\t\t\timgScr = imgs[i].src;\n" +
                        "\t\t} else {\n" +
                        "\t\t\timgScr = imgScr + '---' + imgs[i].src;\n" +
                        "\t\t}\n" +
                        "\t};\n" +
                        "\treturn imgScr;\n" +
                        "};\n";

        wbWebview.evaluateJavascript(jsString, null);
        wbWebview.evaluateJavascript("javascript:getImages()", new ValueCallback<String>() {
                @Override
                public void onReceiveValue(String value) {
                    if (value != null && !value.equals("") && !value.equals("null")) {
                        value = value.replace("\"", "");
                        String[] dataSource = value.split("---");
                        imageDataSource = Arrays.asList(dataSource);
                        Log("已获取到图片, 总共 " + imageDataSource.size() + " 张图片");
                }
            }
        });
});