Android WebView 详解及简单实例

<?xml version="1.0" encoding="utf-8"?><WebView xmlns:android="http://schemas.android.com/apk/res/android"  android:id="@+id/webview"  android:layout_width="fill_parent"  android:layout_height="fill_parent"/>

WebView myWebView = (WebView) findViewById(R.id.webview);myWebView.loadUrl(http://www.example.com);

myWebView.loadUrl(“http://www.google.com“);

myWebView.loadUrl(“file:///android_asset/XX.html“); 

String htmlString = "<h1>Title</h1><p>This is HTML text<br /><i>Formatted in italics</i><br />Anothor Line</p>";// 载入这个html页面myWebView.loadData(htmlString, "text/html", "utf-8");

webView = (WebView) findViewById(R.id.wedview);    WebSettings settings = webView.getSettings();    //支持js    settings.setJavaScriptEnabled(true);    // 安卓为js提供接口    webView.addJavascriptInterface(new Object(){      @android.webkit.JavascriptInterface      private void setinfo(String username,String uclass) {        // TODO Auto-generated method stub        Toast.makeText(MainActivity.this,"username:"+username+","+"uclass"+uclass, Toast.LENGTH_SHORT).show();      }    }, "javaCode");webView.loadUrl("http://localhost:8080/jstest.html");

<ProgressBar     android:id="@+id/ProgressBar"    android:layout_width="match_parent"    android:layout_height="wrap_content"    style="?android:attr/progressBarStyleHorizontal"    android:visibility="gone"    />  <WebView     android:id="@+id/wedView"    android:layout_width="match_parent"    android:layout_height="match_parent"        />

progressBar = (ProgressBar) findViewById(R.id.ProgressBar);    wedView = (WebView) findViewById(R.id.wedView);    // 设置作为客户端存在，界面跳转只在自己应用程序中    wedView.setWebViewClient(new WebViewClient());    wedView.loadUrl("要显示的网址");    wedView.setWebChromeClient(new WebChromeClient(){      @Overridepublic void onProgressChanged(WebView view, int newProgress) {        // TODO Auto-generated method stub  super.onProgressChanged(view, newProgress);        progressBar.setVisibility(View.VISIBLE);        //设置进度        progressBar.setProgress(newProgress);        // 进度到头，消失        if (newProgress==100) {          progressBar.setVisibility(View.GONE);        }      }    });    //初始化WebView    initWedSetrings();

public void initWedSetrings(){    //获取设置的对象     WebSettings settings = wedView.getSettings();     //设置wedview的缓存方式，设为默认方式    // 默认如果有缓存，并且缓存未过期，使用缓存，否则使用网络     settings.setCacheMode(WebSettings.LOAD_DEFAULT);     //设置支持js代码     settings.setJavaScriptEnabled(true);     //设置缩放模式，缩放到最小     settings.setDefaultZoom(ZoomDensity.FAR);     //设置字体大小     settings.setTextSize(TextSize.SMALLER);  }

 <uses-sdk    android:minSdkVersion="8"    android:targetSdkVersion="17" />  <uses-permission android:name="android.permission.INTERNET"/>