How to Set BackgroundColor on ImageView on Android?

Question

I tried a couple things and nothing is working... I'm trying to change the BackgroundColor on a ImageView on Android, but nothing happens...

Here is my xml:

<ImageView    android:id="@+id/imageView1"    android:layout_width="350dp"    android:layout_height="550dp"    android:layout_above="@+id/btnInfo"    android:layout_alignLeft="@+id/fundo"    android:layout_alignRight="@+id/btnInfo"    android:layout_alignTop="@+id/fundo"    android:layout_centerHorizontal="true"    android:contentDescription="@string/backgroundMain" /> 

And the code:

public void onStart()     {         super.onStart();         Log.d("Teste", "In the onStart() event 5");          ImageView backgroundImg = (ImageView) findViewById(R.id.imageView1);         backgroundImg.setBackgroundColor(Color.rgb(255, 255, 255));     } 

What am I missing?

Answer 1

There's nothing wrong with your code. But I would prefer doing this through xml , This will also solve your problem. Just add this in your ImageView tag.

android:background="@android:color/black" 

Answer 2

RGB:255, 255, 255 is the color code for WHITE. Since your parent layout background color is also white you won't see the difference.

Try changing color like

backgroundImg.setBackgroundColor(Color.rgb(100, 100, 50)); 

Or else change the background color of parent layout.