Opening a File from assets folder in android

Question

I have a .gif file inside the assets folder like this assets/Files/android.gif. when I try to open the file it throws an exception at the second line

AssetManager mngr=getAssets();
InputStream is2=mngr.open("Files/android.gif");

so Is it that I'm trying to open an image file despite that the same code works if I try to open a text file ? what can be the problem here.

Warm

Answer 1

These Lines are working perfectly--

InputStream assetInStream=null;

try {
    assetInStream=getAssets().open("icon.png");
    Bitmap bit=BitmapFactory.decodeStream(assetInStream);
    img.setImageBitmap(bit);
} catch (IOException e) {
    e.printStackTrace();
} finally {
    if(assetInStream!=null)
    assetInStream.close();
}

If your image is very big then you should scale your image before decoding it into Bitmap. See How to display large image efficiently

Battat

AFIK stream should be closed after use – Supermundane

Answer 2

I suspect you are getting complaints about unhandled exception type IOException. If that's the case, you need to put the call to mgr.open in a try-catch block to handle the exception that may occur when retrieving the InputStream object.

AssetManager mngr = getAssets();
try {
    InputStream is2 = mngr.open("Files/android.gif");
} catch (final IOException e) {
    e.printStackTrace();
}

Shrove

Answer 3

Don't know if things have changed or not but I had an app in Android 1.1 that opened icons to then display them in a view and I did it like so:

BufferedInputStream buf = new BufferedInputStream(mContext.openFileInput(value));
Bitmap bitmap = BitmapFactory.decodeStream(buf);

Dacha

Answer 4

I believe the preferred way to do this is to put your image in the res/drawable directory. Then you can get a Drawable like this:

Drawable d = Resources.getSystem().getDrawable(R.drawable.android);

Clinton

Answer 5

Mina, I had the same problem... I had images and an XML file within "assets" and I could read the XML file but not the images. After a couple of hours of frustration I finally found the solution !

I have posted the solution here: Null-pointer issue displaying an image from assets folder Android 2.2 SDK

Arlon

Answer 6

I do not believe gif is supported automatically on Android. Try a png or jpg with the same code.

Sudbury