Android-加载webview

1、在onCreate中创建webview

    //声明引用
    private WebView mWVmhtml;

        //获取控件对象
        mWVmhtml=(WebView) findViewById(R.id.WV_Id);
        //加载本地html文件
       // mWVmhtml.loadUrl("file:///android_asset/hello.html");
        //加载网络URL
        //mWVmhtml.loadUrl("https://blog.csdn.net/qq_36243942/article/details/82187204");
        //设置JavaScrip
        mWVmhtml.getSettings().setJavaScriptEnabled(true);
        //访问百度首页
        mWVmhtml.loadUrl("https://m.baidu.com");
        //设置在当前WebView继续加载网页
        mWVmhtml.setWebViewClient(new MyWebViewClient());

        mWVmhtml.setWebChromeClient(new MyWebChromeClient());

2、webview方法调用

    class MyWebViewClient extends WebViewClient{
        @Override  //WebView代表是当前的WebView
        public boolean shouldOverrideUrlLoading(WebView view, WebResourceRequest request) {
            //表示在当前的WebView继续打开网页
            view.loadUrl(request.getUrl().toString());
            return true;
        }

        @Override
        public void onPageStarted(WebView view, String url, Bitmap favicon) {
            super.onPageStarted(view, url, favicon);
            Log.d("WebView","开始访问网页");
        }

        @Override
        public void onPageFinished(WebView view, String url) {
            super.onPageFinished(view, url);
            Log.d("WebView","访问网页结束");
        }
    }
    class MyWebChromeClient extends WebChromeClient{
        @Override //监听加载进度
        public void onProgressChanged(WebView view, int newProgress) {
            super.onProgressChanged(view, newProgress);
        }
        @Override//接受网页标题
        public void onReceivedTitle(WebView view, String title) {
            super.onReceivedTitle(view, title);
            //把当前的Title设置到Activity的title上显示
            setTitle(title);
        }
    }

    @Override
    public boolean onKeyDown(int keyCode, KeyEvent event) {
        //如果按返回键，此时WebView网页可以后退
        if (keyCode==KeyEvent.KEYCODE_BACK&&mWVmhtml.canGoBack()){
            mWVmhtml.goBack();
            return true;
        }
        return super.onKeyDown(keyCode, event);
    }

3、webview的activity_web_view.xml文件创建

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical">

    <WebView
        android:id="@+id/WV_Id"
        android:layout_width="match_parent"
        android:layout_height="match_parent"/>

</LinearLayout>