Confusion about InputStream

Question

I am trying to make a simple app. I have a method for returning an InputStream and then I will bind this stream to an ImageView. But it doesn't work as always. There is no exception. What am I doing wrong. How can I make this code run?

String[] names;
Bitmap bmp;
ImageView img;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    AssetManager am=getAssets();
    img = (ImageView)findViewById(R.id.imageView1);
    try {
        names=am.list("myfiles");
        InputStream is=bitmapStream(names[1]);
        bmp =BitmapFactory.decodeStream(is);
        img.setImageBitmap(bmp);
    } catch (IOException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
}

public InputStream bitmapStream(String name) throws FileNotFoundException {
    InputStream is = null;
    is = openFileInput(name);   
    return is;
}

What is happening? Is it not compiling? – DirkyJerky May 22 '14 at 15:28 — DirkyJerky, May 22 '14 at 15:28

score 0 · Answer 1 · answered May 22 '14 at 15:30

0

Bitmaps can be null. I suggest using an asynchronous loading library like Picasso.

answered May 22 '14 at 15:30

interlude

843
8
29

score 0 · Answer 2 · edited May 23 '17 at 12:05

0

Try loading a drawable from the inputStream. A similar question was answered here, it might help: How to load a image from assets?

edited May 23 '17 at 12:05

Community

1
1

answered May 22 '14 at 15:50

yunou

1

score 0 · Accepted Answer · answered May 22 '14 at 21:04

The file that you're trying to load is not at the place were you try to load it from.

  try {
        String folder = "myfiles";
        names=am.list(folder);
        InputStream is= am.open(folder+"/"+names[0]);
        bmp =BitmapFactory.decodeStream(is);
        img.setImageBitmap(bmp);
    }

Confusion about InputStream

3 Answers3