Why I don't see the file output in Android?

Question

I am creating GIF based on images in Android. I create the .gif file and save it with FileOutputStream but I don't see it anywhere on sdcard or in gallery app.

File file = new File(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES), "test.gif");
    FileOutputStream outStream = null;
    try{
        outStream = new FileOutputStream(file);
        outStream.write(generateGIF());
        outStream.close();
        Log.v("Creating gif", "Gif saved");
    }catch(Exception e){
        e.printStackTrace();
    }
    return null;

generateGIF returns byteArray and everything works without error. Did I missed something?

Creating gif﹕ Gif saved /storage/sdcard0/Pictures/test.gif - it seems it saved, but I don't see it. Do I need some permissions for that? — filipp.kowalski, Sep 07 '14 at 18:09
Look at this [answer](http://stackoverflow.com/questions/16331437/how-to-create-an-animated-gif-from-jpegs-in-android-development) I think this may help — Yourange, Sep 07 '14 at 19:57

score 1 · Answer 1 · answered Sep 07 '14 at 19:23

1

Did you add these tags in the AndroidManifest.xml?

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />

These tags tell Android that the app would like to access the SD card. Otherwise, Android blocks the request, making it impossible to save the GIF.

answered Sep 07 '14 at 19:23

EasyasPi

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thanks for response, good point, but I already have it, thanks anyway – filipp.kowalski Sep 07 '14 at 19:29

score 1 · Accepted Answer · answered Sep 07 '14 at 19:26

1

Use MediaScannerConnection to notify the system of new files. That refreshes the Gallery in case of media files and also the MTP/PTP databases when accessing SD card via USB.

answered Sep 07 '14 at 19:26

laalto

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I was thinking about that, but did't know that MediaScannerConnection also influences MTP/PTP connection. I don't see the gif after phone restart, but I will try adding MediaScanner tomorrow. Thanks. – filipp.kowalski Sep 07 '14 at 19:31
Yep, that was it. For reading files via Windows Explorer MediaScanner is also needed. – filipp.kowalski Sep 08 '14 at 14:55

Why I don't see the file output in Android?

2 Answers2