Save string as an image on device internal storage

Question

I'm developing an Android app that connects to facebook and save user's profile image on device internal storage.

This is my code:

private void getFacebookUserProfilePicture(String userAccessToken)
{
    String url = Constants.FB_PROFILE_IMAGE_URL + userAccessToken;

    AsyncHttpClient client = new AsyncHttpClient();
    client.get(url, new AsyncHttpResponseHandler()
    {
        @Override
        public void onSuccess(String response)
        {
            saveUserProfileImage(response.getBytes());
        }
    });
}
private void saveUserProfileImage(byte[] imageBytes)
{
    Log.v(TAG, "Save user image");

    FileOutputStream fOut = null;
    try
    {
        fOut = openFileOutput(Constants.FB_PROFILE_IMAGE_FILE_NAME, Context.MODE_PRIVATE);

        fOut.write(imageBytes);
        fOut.close();
    }
    catch (IOException ioe)
    {
        ioe.printStackTrace();
    }
}

I'm testing using Android emulator and I have used Eclipse DDMS to save the file to my PC, but I can't open it.

What am I doing wrong? I have saved with a jpg extension.

Or maybe, the question could be: How can I save a byte[] as a JPG image?

If I test the url on the browser, I get an image with 2,47KB. And the image I have copied from the device is 4,26KB.

First thing, you cant convert string to byte. you have to image which can convert into byte array.. — Sagar Maiyad, Jun 19 '13 at 10:57
*you have to image which can convert into byte array* What does it mean? — VansFannel, Jun 19 '13 at 11:05
you have only string of image, but not image. if you have any image then we can convert into byte array.. — Sagar Maiyad, Jun 19 '13 at 11:09

score 0 · Answer 1 · edited May 23 '17 at 12:29

0

you can follow this link. And after that you can check if it's loading image from device or not.

edited May 23 '17 at 12:29

Community

1
1

answered Jun 19 '13 at 10:31

mrsus

5,446
4
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Thanks for your answer. I have added more data to my question. – VansFannel Jun 19 '13 at 10:55

score 0 · Accepted Answer · answered Jun 19 '13 at 10:41

You can convert string into byte array and then write this array to your filename. You this method to write array:

public void WriteByteToFile(byte[] mybytes, String filename){

try {

FileOutputStream FOS = openFileOutput(filename, MODE_PRIVATE);
FOS.write(mybytes);
FOS.close();


} catch (FileNotFoundException e) {
    // TODO Auto-generated catch block
    e.printStackTrace();
} catch (IOException e) {
    // TODO Auto-generated catch block
    e.printStackTrace();
}

}

Convert string into byte array like below:

byte[] bytes = string.getBytes("UTF-8");

Try it hopr this solve your problem..

Thanks for your answer. I have added more details to my question. — VansFannel, Jun 19 '13 at 10:56

Save string as an image on device internal storage

2 Answers2