如何在WebView中打开使用Java脚本的HTML页面

我可以在我的

网络视图中加载
网页
。它还会在
WebView
中打开
Non-Javascript
链接，但在
JavsScript
中它什么也不做

当我用这个的时候

webView.getSettings().setJavaScriptEnabled(true);

它会停止在
网络视图中显示任何内容

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_promotions);

    webView = (WebView) findViewById(R.id.wv_promotions);
    webView.setWebViewClient(new MavsWebViewClient());
    webView.getSettings().setJavaScriptEnabled(true);
    webView.loadUrl(URL);
}


class MavsWebViewClient extends WebViewClient {
    @Override
    public boolean shouldOverrideUrlLoading(WebView view, String url) {
        if(url.contains(URL)){
            view.loadUrl(URL); // Stay within this webview and load url
            return true;
        } else {
            return super.shouldOverrideUrlLoading(view, url); 
        }
    }
}

我已经编写了以下代码。但是JavaScript在我的
WebView中不起作用

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_promotions);

    webView = (WebView) findViewById(R.id.wv_promotions);
    webView.setWebViewClient(new MavsWebViewClient());
    webView.getSettings().setJavaScriptEnabled(true);
    webView.loadUrl(URL);
}


class MavsWebViewClient extends WebViewClient {
    @Override
    public boolean shouldOverrideUrlLoading(WebView view, String url) {
        if(url.contains(URL)){
            view.loadUrl(URL); // Stay within this webview and load url
            return true;
        } else {
            return super.shouldOverrideUrlLoading(view, url); 
        }
    }
}

我希望所有活动都发生在我的
WebView
中。请指导我如何在
WebView

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_promotions);

    webView = (WebView) findViewById(R.id.wv_promotions);
    webView.setWebViewClient(new MavsWebViewClient());
    webView.getSettings().setJavaScriptEnabled(true);
    webView.loadUrl(URL);
}


class MavsWebViewClient extends WebViewClient {
    @Override
    public boolean shouldOverrideUrlLoading(WebView view, String url) {
        if(url.contains(URL)){
            view.loadUrl(URL); // Stay within this webview and load url
            return true;
        } else {
            return super.shouldOverrideUrlLoading(view, url); 
        }
    }
}