How can I make an image transparent on Android?

Question

I am using a linear layout and frame layout. In the linear layout I keep an image as background and in the frame layout I keep an imageView. In that imageView I give an image.

Answer 1

Set an id attribute on the ImageView:

In your code where you wish to hide the image, you'll need the following code.

First, you'll need a reference to the ImageView:

ImageView myImage = (ImageView) findViewById(R.id.myImage);

Then, set Visibility to GONE:

myImage.setVisibility(View.GONE);

If you want to have code elsewhere that makes it visible again, just set it to Visible the same way:

myImage.setVisibility(View.VISIBLE);

If you mean "fully transparent", the above code works. If you mean "partially transparent", use the following method:

int alphaAmount = 128; // Some value 0-255 where 0 is fully transparent and 255 is fully opaque
myImage.setAlpha(alphaAmount);