Android版本检测\自动更新(4)

    }  
    private void downloadTheFile(final String strPath) {  
        fileEx = strURL.substring(strURL.lastIndexOf(".") + 1, strURL.length())  
                .toLowerCase();  
        fileNa = strURL.substring(strURL.lastIndexOf("/") + 1,  
                strURL.lastIndexOf("."));  
        try {  
            if (strPath.equals(currentFilePath)) {  
                doDownloadTheFile(strPath);  
            }  
            currentFilePath = strPath;  
            Runnable r = new Runnable() {  
                public void run() {  
                    try {  
                        doDownloadTheFile(strPath);  
                    } catch (Exception e) {  
                        Log.e(TAG, e.getMessage(), e);  
                    }  
                }  
            };  
            new Thread(r).start();  
        } catch (Exception e) {  
            e.printStackTrace();  
        }  
    }  
    private void doDownloadTheFile(String strPath) throws Exception {  
        Log.i(TAG, "getDataSource()");  
        if (!URLUtil.isNetworkUrl(strPath)) {