WebView自适应屏幕

WebSettings webSettings = webView.getSettings();
        webSettings.setSupportZoom(true);
        webSettings.setJavaScriptEnabled(true);
        webSettings.setJavaScriptCanOpenWindowsAutomatically(true);
        webSettings.setBuiltInZoomControls(true);// support zoom
        webSettings.setPluginsEnabled(true);// support flash
        webSettings.setUseWideViewPort(true);
        webSettings.setLoadWithOverviewMode(true);

        DisplayMetrics metrics = new DisplayMetrics();
        getWindowManager().getDefaultDisplay().getMetrics(metrics);
        int mDensity = metrics.densityDpi;
        // DebugLog.d(TAG, "densityDpi = " + mDensity);
        if (mDensity == 240) {
            webSettings.setDefaultZoom(ZoomDensity.FAR);
        } else if (mDensity == 160) {
            webSettings.setDefaultZoom(ZoomDensity.MEDIUM);
        } else if (mDensity == 120) {
            webSettings.setDefaultZoom(ZoomDensity.CLOSE);
        } else if (mDensity == DisplayMetrics.DENSITY_XHIGH) {
            webSettings.setDefaultZoom(ZoomDensity.FAR);
        } else if (mDensity == DisplayMetrics.DENSITY_TV) {
            webSettings.setDefaultZoom(ZoomDensity.FAR);
        }