ImageView not changing image when source is changed (already using invalidate)

Question

I have an imageView with a set image in xml. However when I try to change the image the ImageView never displays the second image. Instead it displays a blank screen. I have tried the code with and without invalidate() and there is no change.

ImageView image; String imgPath=Environment.getExternalStorageDirectory()+"/Music/Evanescence - Discography - 1998-2011 (320 kbps)/Album's/2000 Origin (Limited Edition) (320 kbps)/Scans covers/06.jpg"; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); image=(ImageView)findViewById(R.id.imageView1); image.setImageBitmap(BitmapFactory.decodeFile(imgPath)); if(!new File(imgPath).exists()) Log.i("aaa","File doesnt exist"); //select image from gallery //Intent photoPickerIntent = new Intent(Intent.ACTION_PICK); //photoPickerIntent.setType("image/*"); //startActivityForResult(photoPickerIntent, SELECT_PHOTO); Log.i("aaa","DONE. img path: "+imgPath); }

You don't need invalidate() there because setImageBitmap() will redraw anyway. Are you doing anything with it in onResume()? — codeMagic
– codeMagic, Commented Jul 31, 2013 at 18:17
Side note: You don't need to call BitmapFactory.decodeFile(imgPath) twice to null-check it. If it returns null on the second call for some reason, you won't get that "bitmap was null" message anyway. — Geobits
– Geobits, Commented Jul 31, 2013 at 18:22
Thanks, both of you, I have removed the redundant code, and will repost updated code. — Rilcon42
– Rilcon42, Commented Jul 31, 2013 at 20:08

Benito Bertoli · Accepted Answer · 2013-07-31 18:23:55Z

I think the image is too large.

On some devices, instead of java.lang.OutofMemoryError being thrown, a null bitmap is returned.

Try running your code with a smaller image. If that works, you have to learn how to display bitmaps properly in Android.

(Well either way you have to)

That fixed it. I didn't realize that it would return a null image instead of null. Thanks very much!

Shrikant Ballal · Accepted Answer · 2013-07-31 18:17:48Z

Are you setting android:background="someDrawable" in xml? Check that and remove or set it as android:src="drawable"

If setImageBitmap is not working try with setBackground(drawable)

I know this is not the perfect answer but just a workr-around.. We will find find a definite answer.

Collectives™ on Stack Overflow

ImageView not changing image when source is changed (already using invalidate)

2 Answers 2

1 Comment

Comments

Linked

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

1 Comment

Comments

Linked

Related