Android備份App及資料

1、要有Root許可權，和sd卡寫入權限

2、備份App本身

//引用：http://blog.csdn.net/KPRF2009/article/details/8277996

private void backupApp(String packageName) throws IOException {          File in = new File("/data/app/" + packageName + ".apk");        File out = new File("/sdcard/BackupApp/" + packageName + ".apk");        out.createNewFile();        FileInputStream fis = new FileInputStream(in);        FileOutputStream fos = new FileOutputStream(out);          int count;        byte[] buffer = new byte[256 * 1024];        while ((count = fis.read(buffer)) > 0) {            fos.write(buffer, 0, count);        }          fis.close();        fos.flush();        fos.close();    }

3、備份資料：

new File("/data/data/"+packageName);

再遞迴儲存裡面的資料到SD卡相應的檔案夾裡