CODEWITHSUNDEEP
javaandroidandroid-layoutandroid-imageview
Robert Fuller
Robert Fuller

Reputation: 13

ImageView hiding and showing

I'm struggling to get my android app to show and hide imageView objects programmatically. Actually I'm struggling to get expected behavior from imageView objects full stop.

Following the answers to this question,

Here's what I'm testing with:

public class MapsActivity extends FragmentActivity implements OnMapReadyCallback{

@Override
protected void onCreate(Bundle savedInstanceState) {

    ImageView warn = (ImageView)findViewById(R.id.gpsStatusWarning);

    warn.setImageResource(R.drawable.gps_error);
    warn.getLayoutParams().height = 64;
    warn.getLayoutParams().width = 64;
}

}

The above code is called in the parent activity's OnCreate method, and it does exactly what I expect: It changes the image of the object to be the one designated, and it sets the height and width of said object. However, what I can't seem to do is to set the object as INVISIBLE or GONE. I just can't make it vanish at all, in fact. I've tried both:

    warn.setVisibility(View.INVISIBLE);
    warn.setVisibility(View.GONE);

But the image is still visible. I've even tried changing it in the XML to 

    android:visibility="gone"

But even that hasn't helped. The image is still visible.

What am I doing wrong? Am I missing a call to some update method? Does setting the image resource force the image to be drawn?

Upvotes: 0

Views: 2617

Answers (3)

HAREESH RAJ
HAREESH RAJ

Reputation: 1

imageView.setVisibility(View.GONE); imageView.setVisibility(View.VISIBLE);

Upvotes: 0

mrisek
mrisek

Reputation: 659

This is how you set the visibility of ImageView objects on Android programatically:

yourImage.setVisibility(View.VISIBLE);
yourImage.setVisibility(View.INVISIBLE);
yourImage.setVisibility(View.GONE);

You can also set the initial states of ImageView objects in XML layout files like this:

visibility="visible"
visibility="gone"
visibility="invisible"

You can follow the official documentation about ImageView controls to try it on yourself on this link below. Learn how to set the visibility state of a view.

Upvotes: 0

user5646001
user5646001

Reputation:

Try :

warn.setImageResource(0);

Or : warn.setImageResource(android.R.color.transparent);

Upvotes: 1

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