Android webView 常用属性用法简介

缺乏、安全感 2021-09-02 10:26 684阅读 0赞

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使用环境：

使用到webView

使用方法：

1 设置cookie

private String mS_url, cookieKey, cookieValue;
        
        //webview加载的url
        mS_url = activityIntent.getExtras().getString(Constant.BundleORIntentKey.KEY_URL);
    
        //webView的cookie的key
        cookieKey = activityIntent.getExtras().getString("module_cookie_key");
    
        //webView的cookie的Value
        cookieValue = activityIntent.getExtras().getString("module_cookie_value");
     
        //基础属性之设置cookie     需要在webView.loadUrl（）之前调用
        public void setCookie() {
            try {
                LogUtil.e("设置cookie");
                String StringCookie = cookieKey + "=" + cookieValue + ";path=/";
                CookieManager cookieManager = CookieManager.getInstance();
                if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
                    cookieManager.removeSessionCookies(null);
                    cookieManager.flush();
                } else {
                    cookieManager.removeSessionCookie();
                    CookieSyncManager.getInstance().sync();
                }
                cookieManager.setAcceptCookie(true);
                cookieManager.setCookie(mS_url, StringCookie);
            } catch (Exception e) {
                LogUtil.e("cookie设置出错-->" + e.getMessage());
            }
        }

2 常用属性:

binding.infoAWebContent.getSettings().setSupportZoom(true);//缩放
                 binding.infoAWebContent.getSettings().setBuiltInZoomControls(true);
                 binding.infoAWebContent.getSettings().setDisplayZoomControls(false);
                    
                  
                 binding.infoAWebContent.getSettings().setCacheMode(WebSettings.LOAD_NO_CACHE);
                 binding.infoAWebContent.getSettings().setAllowFileAccess(true);
                 binding.infoAWebContent.getSettings().setGeolocationEnabled(true);
                 binding.infoAWebContent.getSettings().setDomStorageEnabled(true);
    
    
                 //注意userAgent中不允许有换行符
                 //String oldUserAgent = 
                 binding.infoAWebContent.getSettings().getUserAgentString();
                 //binding.infoAWebContent.getSettings().setUserAgentString(oldUserAgent + 
                 ";ShiQin@App-Android");
                 binding.infoAWebContent.getSettings().setUserAgentString("app/ShiQin@App-Android");
                 setCookie();
    
    
                 binding.infoAWebContent.loadUrl(mS_url);
                 binding.infoAWebContent.getSettings().setJavaScriptEnabled(true);
                    
          binding.infoAWebContent.getSettings().setJavaScriptCanOpenWindowsAutomatically(true);
                 binding.infoAWebContent.getSettings().setLoadWithOverviewMode(true);
                 binding.infoAWebContent.getSettings().setDefaultTextEncodingName("UTF-8");
                 binding.infoAWebContent.getSettings().setAppCacheEnabled(false);

3 返回值处理：

/**
         * 处理手机返回键返回上一页的卡顿问题
         *
         * @param keyCode
         * @param event
         * @return
         */
        @Override
        public boolean onKeyDown(int keyCode, KeyEvent event) {
            if ((keyCode == KeyEvent.KEYCODE_BACK)) {
                if (binding.infoAWebContent.canGoBack()) {
                    //goBack()表示返回WebView的上一页面
                    binding.infoAWebContent.goBack();
                    return true;
                } else {
                    finish();
                    return true;
                }
            }
            return false;
        }

4 掉起支付宝支付

在webView.loadUrl(str)前调用

binding.infoAWebContent.setWebViewClient(new WebViewClient() {
                @SuppressLint("NewApi")
                @Override
                public boolean shouldOverrideUrlLoading(WebView view, WebResourceRequest request) {
    
                    LogUtil.e("支付地址-->" + request.getUrl());
                    LogUtil.e("版本号SDK_INT-->" + Build.VERSION.SDK_INT);
                    LogUtil.e("版本号M-->" + Build.VERSION_CODES.M);
    
                    if (request.getUrl().toString().startsWith("alipays")) {
                        startPayActivity(request.getUrl());
                    } else if (request.getUrl().toString().startsWith("wxpays")) {
                        startPayActivity(request.getUrl());
                    } else {
                        binding.infoAWebContent.loadUrl(request.getUrl().toString());
                    }
                    return false;
                }
    
                @Override
                public void onPageFinished(WebView view, String url) {
                    super.onPageFinished(view, url);
                    //获取url的标题
                    String title = view.getTitle();
                    //                if (!TextUtils.isEmpty(title)) {
                    //                    mTitle = title;
                    //                    viewModel.setTitle(title);
                    //                }
                }
    
                @Override
                public void onPageStarted(WebView view, String url, Bitmap favicon) {
                    super.onPageStarted(view, url, favicon);
                }
            });
    
    
    
     public void startPayActivity(Uri url) {
            Intent intent = new Intent();
            intent.setAction(Intent.ACTION_VIEW);
            intent.setData(url);
            startActivity(intent);
        }

代码在调试时注入大量的log日志，亲在使用时忽略掉即可。

或者与我一样有好奇心，打印出来亲眼看看好放心。

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