webview设置

webview.getSettings().setRenderPriority(RenderPriority.HIGH);
        webview.getSettings().setJavaScriptEnabled(true);
        webview.getSettings().setJavaScriptCanOpenWindowsAutomatically(true);

        webview.getSettings().setSupportZoom(true); // 支持缩放
//        webview.getSettings().setBuiltInZoomControls(true); // 显示放大缩小 controler
        webview.setScrollBarStyle(0);
        webview.getSettings().setDefaultTextEncodingName("utf-8");
        // webview.getSettings().setCacheMode(WebSettings.LOAD_CACHE_ELSE_NETWORK);
        // // 设置缓存
        webview.getSettings().setCacheMode(WebSettings.LOAD_NO_CACHE); // 不读取缓存，所有内容均从网络下载

webview.setWebChromeClient(new WebChromeClient() {
            @Override
            public boolean onJsAlert(WebView view, String url, String message,
                    JsResult result) {
                // TODO Auto-generated method stub
                return super.onJsAlert(view, url, message, result);
            }
        });

webview.getSettings().setUseWideViewPort(true);// 關鍵點
        webview.getSettings().setLoadWithOverviewMode(true);

DisplayMetrics metrics = new DisplayMetrics();
        getWindowManager().getDefaultDisplay().getMetrics(metrics);
        int mDensity = metrics.densityDpi;
        if (mDensity == 240) {
            webview.getSettings().setDefaultZoom(ZoomDensity.FAR);
        } else if (mDensity == 160) {
            webview.getSettings().setDefaultZoom(ZoomDensity.MEDIUM);
        } else if (mDensity == 120) {
            webview.getSettings().setDefaultZoom(ZoomDensity.CLOSE);
        } else if (mDensity == DisplayMetrics.DENSITY_HIGH) {
            webview.getSettings().setDefaultZoom(ZoomDensity.FAR);
        } else {
            webview.getSettings().setDefaultZoom(ZoomDensity.FAR);
        }