android webview 中 get 和 post 请求代码片段

一.get请求方法 loadUrl

webView.loadUrl(String url)

二.post 请求方法 postUrl
webView.postUrl(String url, byte[] postData)

# 例如
StringBuilder builder = new StringBuilder();
try {//拼接post提交参数
    builder.append("token=").append(token);
} catch (Exception e) {
	e.printStackTrace();
}
String postData = builder.toString();
webView.postUrl(url, EncodingUtils.getBytes(postData, "UTF-8"));

三.webview 初始化实例代码

 /***
     * 初始化webview
     */
    public void webView(String url) {
         
//        LayoutInflater inflater = LayoutInflater.from(this);
//        View popView = inflater.inflate(R.layout.bagview, null);
//        webView = (WebView) popView.findViewById(R.id.webView);
        //设置WebView的一些缩放功能点
        webView.setScrollBarStyle(WebView.SCROLLBARS_OUTSIDE_OVERLAY);
        webView.setHorizontalScrollBarEnabled(false);
        webView.getSettings().setSupportZoom(true);
        //设置WebView触摸放大缩小
//        webView.getSettings().setBuiltInZoomControls(false);
//        webView.setInitialScale(70);
//        webView.setHorizontalScrollbarOverlay(true);
        //WebView双击变大，再双击后变小，当手动放大后，双击可以恢复到原始大小
        //webView.getSettings().setUseWideViewPort(true);
        //提高渲染的优先级
        webView.getSettings().setRenderPriority(WebSettings.RenderPriority.HIGH);
        //允许JS执行
        webView.getSettings().setJavaScriptEnabled(true);
        //把图片加载放在最后来加载渲染
        //webView.getSettings().setBlockNetworkImage(true);
        //用WebView将字符串以HTML的形式显示出来
        //webView.loadDataWithBaseURL("fake://not/needed", <p>zzz</p>, "text/html", "utf-8", "");
        //在同种分辨率的情况下,屏幕密度不一样的情况下,自动适配页面:
        DisplayMetrics dm = getResources().getDisplayMetrics();
        // 获取当前界面的高度
        //int width = dm.widthPixels;
        //int height = dm.heightPixels;
        int scale = dm.densityDpi;
        if (scale >= 240) {
            webView.getSettings().setDefaultZoom(WebSettings.ZoomDensity.FAR);
        } else if (scale == 160) {
            webView.getSettings().setDefaultZoom(WebSettings.ZoomDensity.MEDIUM);
        } else {
            webView.getSettings().setDefaultZoom(WebSettings.ZoomDensity.CLOSE);
        }
        webView.setWebViewClient(new WebViewClient() {
            // 点击超链接的时候重新在原来进程上加载URL
            @Override
            public boolean shouldOverrideUrlLoading(WebView view, String url) {
                boolean flag = judgeUrl(url);
                if (!flag) {
                    view.loadUrl(url);
                }
                return true;
            }

            @RequiresApi(21)
            @Override
            public void onReceivedHttpError(WebView view, WebResourceRequest request, WebResourceResponse errorResponse) {
                super.onReceivedHttpError(view, request, errorResponse);
                if(url.equals(StringHelper.convertToString(request.getUrl()))){
                    //请求失败时
                    if (progressDialog != null){
                        progressDialog.dismiss();
                    }
//                    commonLoadErrorLl.setVisibility(View.VISIBLE);
                }else {
                    //请求失败时
                    if (progressDialog != null){
                        progressDialog.dismiss();
                    }
                }
            }


            @Override
            public void onPageStarted(WebView view, String url, Bitmap favicon) {
                super.onPageStarted(view, url, favicon);
                commonLoadErrorLl.setVisibility(View.GONE);
//                if (progressDialog != null && progressDialog.isShowing()) {
//                    progressDialog.dismiss();
//                }
                progressDialog = CustomProgressDialog.show(activity, "", "正在加载中,请稍候...");
            }

            // webview加载完成
            @Override
            public void onPageFinished(WebView view, String url) {
                if (progressDialog != null)
                    progressDialog.dismiss();
            }

            @Override
            public void onReceivedError(WebView view, WebResourceRequest request, WebResourceError error) {
                super.onReceivedError(view, request, error);
                if (progressDialog != null)
                    progressDialog.dismiss();
                commonLoadErrorLl.setVisibility(View.VISIBLE);
            }

        });
        //得到WebSettings对象
        WebSettings settings = webView.getSettings();
        // 获取到UserAgentString
        String userAgent = settings.getUserAgentString();
        // 打印结果
        //listview,webview中滚动拖动到顶部或者底部时的阴影
        webView.setOverScrollMode(View.OVER_SCROLL_NEVER);
        //webView.getSettings().setCacheMode(WebSettings.LOAD_CACHE_ELSE_NETWORK);//使用缓存
        webView.getSettings().setCacheMode(WebSettings.LOAD_NO_CACHE); //默认不使用缓存！
        webView.setScrollBarStyle(View.SCROLLBARS_INSIDE_OVERLAY); //取消滚动条白边效果
        //webView.setWebChromeClient(new CustomChromeClient("HostApp", HostJsScope.class));
        webView.setWebChromeClient(new MyChromeClient());
        //webView.loadUrl(url);

        StringBuilder builder1 = new StringBuilder();
        try {//拼接post提交参数
            builder1.append("token=").append(token);
        } catch (Exception e) {
            e.printStackTrace();
        }
        String postData = builder1.toString();
        webView.postUrl(url, EncodingUtils.getBytes(postData, "UTF-8"));

//        dialog.setContentView(popView);
//        dialog.setCanceledOnTouchOutside(true);
//        dialog.show();
    }

本文地址：https://blog.csdn.net/dazhong2012/article/details/107946720