android webview loadurl,javascript – WebView.loadUrl()中的Android JS

在onPageFinished()中：

view.loadUrl("javascript:"

+ "var FunctionOne = function () {"

+ " var r = $.Deferred();"

+ " try{document.getElementsByClassName('header')[0].style.display='none';}catch(e){}"

+ " try{document.getElementById('section_0').style.display='none';}catch(e){}"

+ " try{document.getElementById('page-actions').style.display='none';}catch(e){}"

+ " try{document.getElementsByClassName('languageSelector')[0].style.display='none';}catch(e){}"

+ " try{document.getElementById('mw-mf-last-modified').style.display='none';}catch(e){}"

+ " try{document.getElementById('footer').style.display='none';}catch(e){}"

+ " setTimeout(function () {"

+ " r.resolve();"

+ " },2500);"

+ " return r;"

+ "};"

+ "var FunctionTwo = function () {"

+ " window.CallToAnAndroidFunction.setVisible();"

+ "};"

+ "FunctionOne().done(FunctionTwo);");

在MainActivity.onCreate()中：

this.webView.addJavascriptInterface(new JsObject(webView,loadingView),"CallToAnAndroidFunction");

在MainActivity()中：

public class JsObject {

private View loadingView;

private View view;

JsObject(View view,View loadingView){this.view = view;this.loadingView = loadingView;}

@JavascriptInterface

public void setVisible(){

runOnUiThread(new Runnable() {

@Override

public void run() {

view.setVisibility(View.VISIBLE);

loadingView.setVisibility(View.INVISIBLE);

}

});

}

}

因此,它是一个组合JavascriptInterface和制作JS函数来等待JS调用完成之后调用接口(具有可见性设置).