webview使用

        <p class="agreement" onclick="agree();"><span class="icon-agree" id="agree-btn"></span>我已阅读并同意<a href="http://www.dahuo.la/dahuo-private-equity-tos.html" class="risk-warning-letter">《风险提示书》</a></p>
    </div>
<script>
function agree()
{
    var _agreeBtn = document.getElementById("agree-btn")
    var className = _agreeBtn.className;
    if(className == 'icon-disagree'){
        _agreeBtn.className = 'icon-agree';
        dahuo.agreeLicense();
    } else {
        _agreeBtn.className = 'icon-disagree';
                dahuo.disagreeLicense();
    }
}
</script>

 

 

 

   String content = ResourcesManager.loadAssetFile("subscription_xuzhi.html");
        TextView submitBtn = (TextView) findViewById(R.id.submit_btn);
        mWebView = (WebView) findViewById(R.id.webview);
        final WebSettings webSettings = mWebView.getSettings();
        initWebSettings(webSettings);
        mWebView.addJavascriptInterface(new CFSInvestNoticeJsCallback(submitBtn), Constants.JS_BRIDGE_NAME);
        mWebView.setWebViewClient(new WebViewClient() {

        });
        mWebView.setSaveEnabled(false);
        mWebView.setWebChromeClient(new WebChromeClient(){
             @Override
            public boolean onJsAlert(WebView view, String url, String message, final JsResult result) {
                 AlertDialog.Builder builder = new AlertDialog.Builder(CFSInvestNoticeActivity.this);
                 builder.setMessage(message);
                 builder.setOnDismissListener(new OnDismissListener() {

                    @Override
                    public void onDismiss(DialogInterface arg0) {
                        result.confirm();
                    }
                });
                 builder.show();
                 return true;
            }
        });
       mWebView.loadUrl(content);

 

 

 

 

 

    @KeepAll
    public static final class CFSInvestNoticeJsCallback {
        CFSInvestNoticeView view;
        CFSInvestNoticeJsCallback(final CFSInvestNoticeView v) {
            view = v;
        }

        @JavascriptInterface
        public void agreeLicense() {
            view.handleAgreeProtocolClick();
        }

        @JavascriptInterface
        public void disagreeLicense() {
            view.handleAgreeProtocolClick();
        }
    }

 

总结

1、方法前要打标记JavascriptInterface

2、申明callback类最上面加入

@SuppressLint({
    "JavascriptInterface", "SetJavaScriptEnabled"
})

 

3、注意webView的loadUrl方法调用必须要在addJavascriptInterface后面否则不生效