读取androidwebView缓存文件长度

/**
	 * 获取webViewCache的下所有的文件长度
	 * @return
	 */
	public static long getWebCacheLegth(){
        long length = 0;
        String path = Environment.getDataDirectory() +"/data/" 
                        + Config.PACKAGE + "/cache/" +"/webviewCache/";
        File file = new File(path);
        File[] tempList = file.listFiles();
        if(tempList!=null){
            for(int i =0 ; i < tempList.length ; i++){          
                if(tempList[i].isFile()){
                    //文件
                    File  tempFile = tempList[i];
                    length +=   tempFile.length();  
                    Log.i("getWebCacheLegth22222", String.valueOf(tempFile.getName()));
                }
                if(tempList[i].isDirectory()){
                    //文件夹
                }
            } 
        }
        
        path = Environment.getDataDirectory() + "/data/" + Config.PACKAGE + "/databases/webview.db";
        file = new File(path);
        length += file.length();
        path = Environment.getDataDirectory() + "/data/" + Config.PACKAGE + "/databases/webviewCache.db";
        file = new File(path);
        length += file.length();
        return length;
    }