안드로이드 스튜디오 - 웹뷰(WebView) 자바스크립트 조작

private Boolean isLoadingFinished = false;

...

WebView webView = findViewById(R.id.webView);
webView.setWebViewClient(new WebViewClient(){

    @Override
    public void onPageStarted(WebView view, String url, Bitmap favicon) {
        super.onPageStarted(view, url, favicon);
        Toast.makeText(getApplicationContext(), "페이지 로드 중...", Toast.LENGTH_LONG).show();
        isLoadingFinished = false;
    }

    @Override
    public void onPageFinished(WebView view, String url) {
        super.onPageFinished(view, url);
        if (webView.getProgress() == 100) {
            Toast.makeText(getApplicationContext(), "페이지 로드 완료.", Toast.LENGTH_LONG).show();
            isLoadingFinished = true;
        }
    }
});
webView.getSettings().setJavaScriptEnabled(true);

webView.loadUrl("http://172.30.1.254/mobile/login/login");

new Thread(new Runnable() {
    @Override
    public void run() {

        runOnUiThread(new Runnable() {
            @Override
            public void run() {

                while(true){
                    if(isLoadingFinished)
                        break;

                    try {
                        Thread.sleep(1000);
                    } catch (InterruptedException e) {
                        e.printStackTrace();
                    }
                }

                String script =
                        "$('#loginid').val('1234');" +
                        "$('#loginid').change();" +
                        "$('#loginpass').val('1234');" +
                        "$('#loginpass').change();";

                webView.loadUrl("javascript:function run(){ " + script + " }run();");
            }
        });

    }
}).start();

 

웹뷰(WebView)로부터 데이터 가져오기

// 현재 URL 가져오기
String webUrl = webView.getUrl();


// element 내용 가져오기
String js = "(function() { " +
        "return document.getElementById('my_element').innerHTML;" +
        "})()";

webView.setWebViewClient(new WebViewClient() {
    @Override
    public void onPageFinished(WebView view, String url) {
        super.onPageFinished(view, url);
        view.evaluateJavascript(js, new ValueCallback<String>() {
            @Override
            public void onReceiveValue(String value) {
                // 'value' contains the result of the JavaScript code
                Log.d("WebView", "Data: " + value);
            }
        });
    }
});

 

 

출처: 

https://stackoverflow.com/questions/23827460/how-to-get-the-current-page-url-from-the-web-view-in-android

how to get the current page url from the web view in android

 

https://stackoverflow.com/questions/3149216/how-to-listen-for-a-webview-finishing-loading-a-url

How to listen for a WebView finishing loading a URL?