I have a table view, I have addeed image as subview for header, but that image is shown with bagckground white color,how to set transparency for image.
TIA
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2Does your image infact *have* a transparent background? – James Aug 06 '12 at 08:55
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If you don't mind, how to set transparent background for image. – Feroz Aug 06 '12 at 09:00
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this would have to be done via an image editor. – James Aug 06 '12 at 09:00
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1`[_ImageView setBackgroundColor:[UIColor clearColor]];` – holex Aug 06 '12 at 09:13
4 Answers
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For this you have to set alpha of your UIImageView
Your_ImageView.alpha = 0.6;
You can also do it in your xib file
superGokuN
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I am adding image programatically. By the way setting alpha low hides the visibility of image also.. Any Idea? – Feroz Aug 06 '12 at 08:59
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if you are adding it programatically then you can use the line Your_ImageView.alpha = 0.6; and make sure the image you are using must have transparent backgroung – superGokuN Aug 06 '12 at 09:01
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@naveen this will set the transparency for the *full* image, the OP is looking to make the background transparent. – James Aug 06 '12 at 09:02
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@James For this you have to make an image with transparent background and your question should be image with transparent background not the transparent image – superGokuN Aug 06 '12 at 09:04
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@James, May be my question is wrong I want transparent background only, sorry for that. I have transparent background image only still I need to do anything in code. ? – Feroz Aug 06 '12 at 09:12
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@james try giving your imageview background color as clearcolor this may help you – superGokuN Aug 06 '12 at 09:19
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@naveen `For this you have to make an image with transparent background` - not true, you can use image masking see my answer. – James Aug 06 '12 at 09:32
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@James thanks for that..as a beginner i have many things to learn :) and sorry for misunderstanding :( – superGokuN Aug 06 '12 at 09:38
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Assuming the name of your view is myTransparentSubView:
[myTransparentSubView setBackgroundColor:[UIColor clearColor]];
If you are using the Interface Builder then set the background Color property accordingly within IB.
Hermann Klecker
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The simplest solution is to infact to create an image with a transparent background, however, you can use an Image Mask to get the desired effect.
There is already an example of this here.
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Use image Preview in MAC
Start with a png file.
You have to go to View > Show Edit Toolbar.
Then widen the window so that you can see all of the icons.
Then click the icon that looks like a magic wand.
And then click and drag on the color you want to erase.
