Question

我需要从网络响应中调用我的java函数：

这是我的代码，请指出我哪里出错了

活动：

    @InjectView(R.id.loadCardWebView)
android.webkit.WebView webView;

WebViewClient webViewClient;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_web_view);
    ButterKnife.inject(this);
    WebSettings webSettings = webView.getSettings();
    webSettings.setJavaScriptEnabled(true);
    webSettings.setBuiltInZoomControls(false);
    webView.addJavascriptInterface(new JSInterface(activity), "XYZ");
    initWebViewClient();
    webView.loadUrl("file:///android_asset/www/response.html");

}

private void initWebViewClient() {
    webViewClient = new WebViewClient() {
        private int webViewPreviousState;
        private final int STARTED = 1;
        private final int REDIRECTED = 4;

        @Override
        public boolean shouldOverrideUrlLoading(android.webkit.WebView view,
                                                String urlNewString) {
            webViewPreviousState = REDIRECTED;
            webView.loadUrl(urlNewString);
            return true;
        }

        @Override
        public void onPageStarted(android.webkit.WebView view, String url, Bitmap favicon) {
            super.onPageStarted(view, url, favicon);
            webViewPreviousState = STARTED;
        }

        @Override
        public void onPageFinished(android.webkit.WebView view, String url) {

            if (webViewPreviousState == STARTED) {
                Log.e(TAG ,RESPONSE URL : " + url);
            }

        }
    };
    webView.setWebViewClient(webViewClient);
}

MY JAVASCRIPT CLASS：

public class JSInterface {
private Activity activity;

public JSInterface(Activity activity) {
    this.activity = activity;
}

@JavascriptInterface
public void showToast(String string){
    Log.e("REACHED","HERE");
    Timber.e("REACHED HERE");
}

}

这是一个示例HTML文件：

    <html>
<body>
    <a href="test_2.html" target="_blank">goto test 2</a>
    <input type="button" value="Say hello" onClick="showAndroidToast('Hello Android!')" />

    <script type="text/javascript">
    function showAndroidToast(toast) {
        XYZ.showToast(toast);
    }
</script>
</body>
</html>

show方法函数永远不会被调用。我从服务器得到一个响应，它包含类似的代码，用于调用我的javascript类中的一个函数。

请帮忙！

提前致谢！

Answer 1

我不确定Timber.e()是什么，但您的代码是否真的试图显示吐司信息？也许它应该更像......

@JavascriptInterface
public void showToast(String string) {
    Toast.makeText(...);
    Log.e("REACHED","HERE");
    Timber.e("REACHED HERE");
}

WebView.addJavascriptInterface无法正常工作

1 个答案: