Question

目前我正试图找出从android调用javascript的最佳方式。

AndroidJSCore。 AndroidJSCore
web视图

我尝试过AndroidJSCore，它很棒。但它会扩大apk大小。然后我尝试潜入WebView来调用javascript。但失败了。

活动如下：

public class WebViewActivity extends AppCompatActivity {

private WebView webView;
private static final String TAG = WebViewActivity.class.getSimpleName();

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_web_view);
    Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
    setSupportActionBar(toolbar);

    webView = (WebView)findViewById(R.id.webview);

    WebSettings webSettings = webView.getSettings();
    webSettings.setJavaScriptEnabled(true);
    webSettings.setJavaScriptCanOpenWindowsAutomatically(true);
    webSettings.setSupportZoom(true);
    webSettings.setDisplayZoomControls(true);

    webView.loadUrl("file:///android_asset/jsWeb/test.html");
    webView.setWebViewClient(new WebViewClient(){
        public void onPageFinished(WebView view, String url){

            String test1 = "permissionRegist(\"'function'\", [\"'319609831167500021'\",\"'319609831167500022'\",\"'319609831167500023'\",\"'419609839767500020'\",\"'644731700926740003'\",\"'644731700926740004'\",\"'854885785357389824'\",\"'854995673156816896'\",\"'855001385022918656'\",\"'855009454683459584'\",\"'855298661779902464'\",\"'855303143108513792'\",\"'855347061611171840'\",\"'855356859882803200'\"])";
            String test2 = "evalJSExpression()";

            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
                webView.evaluateJavascript(test1, new ValueCallback<String>() {
                    @Override
                    public void onReceiveValue(String s) {
                        Log.d(TAG, s);
                    }
                });

                webView.evaluateJavascript(test2, new ValueCallback<String>() {
                    @Override
                    public void onReceiveValue(String s) {
                        Log.d(TAG, s);
                    }
                });
            }
        }
    });

}

}

附加文件是：

android.js

＆＃13;

function permissionRegist(type, list) {
    var s_permissionMap = new Map();
    s_permissionMap.set(type, list);
}

function evalJSExpression() {
    var result = 'dddddd';
    return result;
}

＆＃13;

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="utf-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>LogicalExpression</title>

    <!-- 导入script -->
    <script type="text/javascript" src="android.js"></script>
</head>

<body>
<!--<button onClick="permissionRegist()">点击读取文件</button>-->
</body>

</html>

＆＃13;

但结果是：

 I/chromium: [INFO:CONSOLE(2)] "Uncaught ReferenceError: Map is not defined", source: file:///android_asset/jsWeb/android.js (2)
 D/WebViewActivity: null
 D/WebViewActivity: "dddddd"

Answer 1

你试过https://github.com/mozilla/rhino 这是一个例子：http://lifeofcoding.com/2015/04/05/Execute-JavaScript-in-Android-without-WebView/

Android WebView evaluateJavascript Uncaught ReferenceError

1 个答案: