目前我试图找出哪些是从android调用JavaScript的最佳方式。Android WebView evaluateJavascript Uncaught ReferenceError
- AndroidJSCore。 AndroidJSCore
- 的WebView
我试过AndroidJSCore,这是伟大的。但它会放大apk大小。 然后我试图潜入WebView来调用JavaScript。但失败。
活动是这样的:
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);
}
});
}
}
});
}
}
有附加文件是:
android.js
function permissionRegist(type, list) {
var s_permissionMap = new Map();
s_permissionMap.set(type, list);
}
function evalJSExpression() {
var result = 'dddddd';
return result;
}
<!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>
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"
是的,我试过了。但它似乎不太好,然后我转向AndroidJSCore lib。 –
您是否尝试过反应原生。您可能无法调用JavaScript。但是,您可以将您的JavaScript应用转换为本地应用,并且可以从您现有的本机应用中调用。 https://facebook.github.io/react-native/docs/integration-with-existing-apps.html – NSK
我们正在尝试通过javascript函数来计算一些数据,所以android&iOS都可以使用javascript源代码,当然,这是一小组代码。但其他的是本地代码。我们还没有考虑使用ReactNative。由于一些商业原因... @NSK –