Highlight a region in an image if user touches it












-2














for example we have an image with 4 regions. It is a still image (UIImage).



The image background is transparent and the regions are marked out with the black color. The regions have different forms, colours and positions.



if user touches the region 2 - it is highlighted, if user touches the region 4 - it is also highlighted.



I want to detect if user touches a region and then highlight it inside with its own colour.



Can someone please explain how can I achieve this in swift?










share|improve this question
























  • region image is blank? can you please explain and show proper UI what you want?
    – Abhishek Jadhav
    yesterday










  • Add tap gestures in your views and maintain indexes for selected and unselected views when tap gesture is tapped.
    – prekshya basnet
    yesterday










  • Cut the image in 4 parts and make 4 buttons.
    – Casper Zandbergen
    yesterday










  • @CasperZandbergen the regions may have different forms and positions, they are not hard-coded
    – Paul
    yesterday










  • You have to provide the regions with each image then, then check for touch up inside that region.
    – Casper Zandbergen
    yesterday
















-2














for example we have an image with 4 regions. It is a still image (UIImage).



The image background is transparent and the regions are marked out with the black color. The regions have different forms, colours and positions.



if user touches the region 2 - it is highlighted, if user touches the region 4 - it is also highlighted.



I want to detect if user touches a region and then highlight it inside with its own colour.



Can someone please explain how can I achieve this in swift?










share|improve this question
























  • region image is blank? can you please explain and show proper UI what you want?
    – Abhishek Jadhav
    yesterday










  • Add tap gestures in your views and maintain indexes for selected and unselected views when tap gesture is tapped.
    – prekshya basnet
    yesterday










  • Cut the image in 4 parts and make 4 buttons.
    – Casper Zandbergen
    yesterday










  • @CasperZandbergen the regions may have different forms and positions, they are not hard-coded
    – Paul
    yesterday










  • You have to provide the regions with each image then, then check for touch up inside that region.
    – Casper Zandbergen
    yesterday














-2












-2








-2







for example we have an image with 4 regions. It is a still image (UIImage).



The image background is transparent and the regions are marked out with the black color. The regions have different forms, colours and positions.



if user touches the region 2 - it is highlighted, if user touches the region 4 - it is also highlighted.



I want to detect if user touches a region and then highlight it inside with its own colour.



Can someone please explain how can I achieve this in swift?










share|improve this question















for example we have an image with 4 regions. It is a still image (UIImage).



The image background is transparent and the regions are marked out with the black color. The regions have different forms, colours and positions.



if user touches the region 2 - it is highlighted, if user touches the region 4 - it is also highlighted.



I want to detect if user touches a region and then highlight it inside with its own colour.



Can someone please explain how can I achieve this in swift?







swift xcode image highlight






share|improve this question















share|improve this question













share|improve this question




share|improve this question








edited yesterday









Moritz

57.4k19131184




57.4k19131184










asked yesterday









Paul

13




13












  • region image is blank? can you please explain and show proper UI what you want?
    – Abhishek Jadhav
    yesterday










  • Add tap gestures in your views and maintain indexes for selected and unselected views when tap gesture is tapped.
    – prekshya basnet
    yesterday










  • Cut the image in 4 parts and make 4 buttons.
    – Casper Zandbergen
    yesterday










  • @CasperZandbergen the regions may have different forms and positions, they are not hard-coded
    – Paul
    yesterday










  • You have to provide the regions with each image then, then check for touch up inside that region.
    – Casper Zandbergen
    yesterday


















  • region image is blank? can you please explain and show proper UI what you want?
    – Abhishek Jadhav
    yesterday










  • Add tap gestures in your views and maintain indexes for selected and unselected views when tap gesture is tapped.
    – prekshya basnet
    yesterday










  • Cut the image in 4 parts and make 4 buttons.
    – Casper Zandbergen
    yesterday










  • @CasperZandbergen the regions may have different forms and positions, they are not hard-coded
    – Paul
    yesterday










  • You have to provide the regions with each image then, then check for touch up inside that region.
    – Casper Zandbergen
    yesterday
















region image is blank? can you please explain and show proper UI what you want?
– Abhishek Jadhav
yesterday




region image is blank? can you please explain and show proper UI what you want?
– Abhishek Jadhav
yesterday












Add tap gestures in your views and maintain indexes for selected and unselected views when tap gesture is tapped.
– prekshya basnet
yesterday




Add tap gestures in your views and maintain indexes for selected and unselected views when tap gesture is tapped.
– prekshya basnet
yesterday












Cut the image in 4 parts and make 4 buttons.
– Casper Zandbergen
yesterday




Cut the image in 4 parts and make 4 buttons.
– Casper Zandbergen
yesterday












@CasperZandbergen the regions may have different forms and positions, they are not hard-coded
– Paul
yesterday




@CasperZandbergen the regions may have different forms and positions, they are not hard-coded
– Paul
yesterday












You have to provide the regions with each image then, then check for touch up inside that region.
– Casper Zandbergen
yesterday




You have to provide the regions with each image then, then check for touch up inside that region.
– Casper Zandbergen
yesterday

















active

oldest

votes











Your Answer






StackExchange.ifUsing("editor", function () {
StackExchange.using("externalEditor", function () {
StackExchange.using("snippets", function () {
StackExchange.snippets.init();
});
});
}, "code-snippets");

StackExchange.ready(function() {
var channelOptions = {
tags: "".split(" "),
id: "1"
};
initTagRenderer("".split(" "), "".split(" "), channelOptions);

StackExchange.using("externalEditor", function() {
// Have to fire editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled) {
StackExchange.using("snippets", function() {
createEditor();
});
}
else {
createEditor();
}
});

function createEditor() {
StackExchange.prepareEditor({
heartbeatType: 'answer',
autoActivateHeartbeat: false,
convertImagesToLinks: true,
noModals: true,
showLowRepImageUploadWarning: true,
reputationToPostImages: 10,
bindNavPrevention: true,
postfix: "",
imageUploader: {
brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
allowUrls: true
},
onDemand: true,
discardSelector: ".discard-answer"
,immediatelyShowMarkdownHelp:true
});


}
});














draft saved

draft discarded


















StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53944278%2fhighlight-a-region-in-an-image-if-user-touches-it%23new-answer', 'question_page');
}
);

Post as a guest















Required, but never shown






























active

oldest

votes













active

oldest

votes









active

oldest

votes






active

oldest

votes
















draft saved

draft discarded




















































Thanks for contributing an answer to Stack Overflow!


  • Please be sure to answer the question. Provide details and share your research!

But avoid



  • Asking for help, clarification, or responding to other answers.

  • Making statements based on opinion; back them up with references or personal experience.


To learn more, see our tips on writing great answers.





Some of your past answers have not been well-received, and you're in danger of being blocked from answering.


Please pay close attention to the following guidance:


  • Please be sure to answer the question. Provide details and share your research!

But avoid



  • Asking for help, clarification, or responding to other answers.

  • Making statements based on opinion; back them up with references or personal experience.


To learn more, see our tips on writing great answers.




draft saved


draft discarded














StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53944278%2fhighlight-a-region-in-an-image-if-user-touches-it%23new-answer', 'question_page');
}
);

Post as a guest















Required, but never shown





















































Required, but never shown














Required, but never shown












Required, but never shown







Required, but never shown

































Required, but never shown














Required, but never shown












Required, but never shown







Required, but never shown







Popular posts from this blog

Monofisismo

Angular Downloading a file using contenturl with Basic Authentication

Olmecas