cuiyiming007

private void copyBigDataToSD(String strOutFileName) {
    if (ContextCompat.checkSelfPermission(this, Manifest.permission.WRITE_EXTERNAL_STORAGE)
            != PackageManager.PERMISSION_GRANTED) {
        //申请WRITE_EXTERNAL_STORAGE权限
        ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE,Manifest.permission.READ_EXTERNAL_STORAGE},
                1);
    }
    InputStream myInput = null;
    OutputStream myOutput = null;
    File myDir = new File(strOutFileName);