Android - libcore.io.ErrnoException：打开失败：EACCES（权限被拒绝）

Question

我正在尝试根据here 的说明将图像写入文件。但是，我得到了这个例外： libcore.io.ErrnoException: open failed: EACCES (Permission denied) 这是我的代码，显然会弹出此异常：

private File createImageFile(int side) throws IOException {
        String timestamp = new SimpleDateFormat("yyyyMMdd_HHmmss").format(new Date());
        String imageFileName = "";
        if (side==1) {
            imageFileName = "Front_"+timestamp;
        } else {
            imageFileName = "Side_"+timestamp;
        }
        File storageDir = Environment.getExternalStoragePublicDirectory(
                Environment.DIRECTORY_PICTURES);
        File image = File.createTempFile(
                imageFileName,
                ".jpg",
                storageDir
        );

        // Save the file
        mCurrentPhotoPath = "file:"+image.getAbsolutePath();
        return image;
    }

提前感谢您的帮助。

Answer 1

问题是应该是 File storageDir = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES); 而不是 File storageDir = this.getExternalFilesDir(null);