Android内部存储改变读取权限的方法

<span style="color:#330033;">public synchronized static boolean getRoot(String paramString)	  {	    Process process = null;	    DataOutputStream os = null;	    try	    {	      process = Runtime.getRuntime().exec("su");	      os = new DataOutputStream(process.getOutputStream());	      os.writeBytes(paramString + "/n");	      os.writeBytes("exit/n");	      os.flush();	      process.waitFor();	    } catch (Exception localException)	    {	      System.out.println("@@@@root cmd error:"+localException);	      //localException.printStackTrace();	      return false;	    }finally {	      try {	        if (os != null) {	          os.close();	        }	        process.destroy();	      } catch (Exception e) {	      	System.out.println("###root cmd error:"+e);	      }	    }	    return true;	  }</span>

getRoot("chmod -R 777 /data/data/com.xxxxx/databases/wa.db");