android JS相互呼出

26697 ワード
JavaScript and roid webView 
public class SystemWebView extends Activity { Button button;
    WebView webView ;
    WebSettings webSetting;



    @JavascriptInterface
    @Override
    protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_system_webview);
        
        button = (Button)findViewById(R.id.button);
        webView = (WebView)findViewById(R.id.webView);
        //    
        webView.loadUrl("file:///android_asset/hello.html");
        WebSettings settings = webView.getSettings();
        settings.setDefaultTextEncodingName("GBK");//      
        settings.setJavaScriptEnabled(true); //      JS  

        // js window      ，  js  android   ，     JsCallAndroid
        webView.addJavascriptInterface(new JSCallAndroid(), "JsCallAndroid");
        
        //  WebView                      ，    WebView  
        webView.setWebViewClient(new WebViewClient() { @Override
            public boolean shouldOverrideUrlLoading(WebView view, String url) { // TODO Auto-generated method stub  //          ，    true      WebView  ， false                               view.loadUrl(url);
                return true;
            } });

        webView.setWebChromeClient(new WebChromeClient() { @Override
            public boolean onJsAlert(WebView view, String url, String message,
                                     JsResult result) { // TODO Auto-generated method stub  return super.onJsAlert(view, url, message, result);
            } });

        button.setOnClickListener(new View.OnClickListener() { @Override
            public void onClick(View view) { webView.loadUrl("javascript: showFromHtml2('android said:')");
            } });
    } class JSCallAndroid{ @JavascriptInterface
        public void htmlCallAndroid(){ Uri smsToUri = Uri.parse("smsto:");

            Intent intent = new Intent(Intent.ACTION_SENDTO, smsToUri);

            intent.putExtra("sms_body", "       ");

            startActivity(intent);
        } @JavascriptInterface
        public String htmlCallAndroid2(final String str){ Gson gson = new Gson();
            JSONObject jsonObject = null;
            try { jsonObject = new JSONObject(str);
                String name = jsonObject.getString("name");
                String password = jsonObject.getString("password");
                return "{\"name\":" + name + " turn," + "\"password\":"+ password + " turn}";
            } catch (JSONException e) { e.printStackTrace();
            } return null;
        } } } 
        
html   
<!doctype html>
<html lang="en">
 <head>
  <meta charset="GBK">
  <title>Document</title>
  <script>
  function showFromHtml2(param){
     alert(param + "   ");
  }

  function subInput(){
      var name = document.getElementById("name").value;
      var password = document.getElementById("password").value;
      var str = '{"name":"' + name + '","password":"' + password +'"}';
      //  android    
      var str2 = window.JsCallAndroid.htmlCallAndroid2(str);
      alert(str2);
  }

  function sendMsg(){
        //  android   
      window.JsCallAndroid.htmlCallAndroid();
  }
  </script>
 </head>
 <body>

  <form>
      ：<input id="name" type="email" name="email"/>
   <br/>
     ： <input id="password" type="text" name="password"/>
   </br>
   <input type="submit" value="  " onclick="subInput()"/>
    <input type="button" value="       " onclick="sendMsg()"/>
  </form>
 </body>
</html>
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