android webview打开pdf 的两种方式

方法1:利用设备自带浏览器打开pdf

private void loadPDF1(){  
            mWebView.getSettings().setJavaScriptEnabled(true);    
            mWebView.getSettings().setSupportZoom(true);    
            mWebView.getSettings().setDomStorageEnabled(true);    
            mWebView.getSettings().setAllowFileAccess(true);    
            mWebView.getSettings().setPluginsEnabled(true);    
            mWebView.getSettings().setUseWideViewPort(true);    
            mWebView.getSettings().setBuiltInZoomControls(true);    
            mWebView.requestFocus();    
            mWebView.getSettings().setLoadWithOverviewMode(true);    
            mWebView.getSettings().setLayoutAlgorithm(LayoutAlgorithm.SINGLE_COLUMN);    
            String pdfUrl = "http:xxx.pdf";    
            mWebView.loadUrl("http://docs.google.com/gview?embedded=true&url=" +pdfUrl);    
                
        }

private void loadPDF2(){    
            mWebView.getSettings().setJavaScriptEnabled(true);    
            mWebView.getSettings().setSupportZoom(true);    
            mWebView.getSettings().setDomStorageEnabled(true);    
            mWebView.getSettings().setAllowFileAccess(true);    
            mWebView.getSettings().setPluginsEnabled(true);    
            mWebView.getSettings().setUseWideViewPort(true);    
            mWebView.getSettings().setBuiltInZoomControls(true);    
            mWebView.requestFocus();  www.2cto.com  
            mWebView.getSettings().setLoadWithOverviewMode(true);    
            mWebView.getSettings().setLayoutAlgorithm(LayoutAlgorithm.SINGLE_COLUMN);    
            String pdfUrl = "http://xxx.pdf";    
            String data = "<iframe src='http://docs.google.com/gview?embedded=true&url="+pdfUrl+"'"+" width='100%' height='100%' style='border: none;'></iframe>";    
            mWebView.loadData(data, "text/html", "UTF-8");    
                
        }