Question

我已经在我的设备上安装了一个应用程序。但我想将该数据库复制到我的应用程序使用的SD卡。我用这段代码来复制数据库。但它失败了。并需要“su”命令

public void copydatabase() throws IOException{
    String [] cmd1 = { "su", "cp", "/data/data/com.apps/databases/data01.db", "/mnt/extSdCard/data01.db"};
    Process process = new ProcessBuilder(cmd1).start();
    try {
        process.waitFor();
    } catch (InterruptedException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
}

没有“su”命令将任何一些代码复制到SDCard？

Answer 1

public static void copyDataBase(Context mActivity) throws IOException {
        InputStream myInput = new FileInputStream(
                new File("/data/data/" + mActivity.getPackageName()
                        + "/databases/" + "xyz.sqlite"));
        File files = new File("/sdcard/files/");
        files.mkdirs();
        String outFileName = "/sdcard/files/xyz.sqlite";
        OutputStream myOutput = new FileOutputStream(outFileName);
        byte[] buffer = new byte[1024];
        int bufferLength;
        while ((bufferLength = myInput.read(buffer)) > 0) {
            myOutput.write(buffer, 0, bufferLength);
        }
        myOutput.flush();
        myOutput.close();
        myInput.close();
    }

我希望它对你有用......

如何将其他数据库应用程序复制到SDCard

1 个答案: