ios - UIImage automatically rotated when loaded from Filemanager -


when take picture in portrait mode, savedimage automatically rotated when setting uiimageview.

nsarray *paths = nssearchpathfordirectoriesindomains(nsdocumentdirectory, nsuserdomainmask, yes); nsstring *filepath = [[paths objectatindex:0] stringbyappendingpathcomponent:@"profilepicture.png"]; [uiimagepngrepresentation(image) writetofile:filepath atomically:yes];  uiimage *savedimage = [uiimage imagewithdata:[nsdata datawithcontentsoffile:filepath]];

but when use uiimagejpegrepresentation: writetofile: atomically: method, result image has no issues.

can please explain why didn't image in correct orientation while using uiimagejpegrepresentation & not in uiimagepngrepresentation.

nb: tried

uiimage *imagetodisplay =      [uiimage imagewithcgimage:[originalimage cgimage]               scale:[originalimage scale]               orientation: uiimageorientationup];

to save imagetodisplay, not working

its because of rotation flag in exif data of jpeg. every image file has metadata property. if metadata specifies orientation of image ignored other os mac. of images taken having meta data property set right angle. mac shows 90 degree rotated manner. can see same image in proper way in windows os. please check this answer shows more details


Comments

Post a Comment

Popular posts from this blog

php - Vagrant up error - Uncaught Reflection Exception: Class DOMDocument does not exist -

i've set bento/ubuntu-16.04 vagrant box using php 5.6, , getting following error quite few times when try , run shell script: "uncaught reflection exception: class domdocument not exist". i've tried adding following top of script (not together), each no success: "sudo apt-get install php5.6-xml", "sudo apt-get install php5-xml", "sudo apt-get install php-dom" i've tried resetting server "sudo service apache2 restart". does have suggestions?
Read more

vue.js - Create hooks for automated testing -

Image
qa guys complained can't automate frontend testing. because our html looks same outside. lazy hack did this <template> <div :role="$options.name"> ... </div> </template> <script> export default { name: 'vmcomponentname' } </script> which takes name script , applies html. in browser get: <div role="vmcomponentname"> ... </div> line :role="$options.name" goes in every component. is there dry er solutions? please share. additional details i'll explain in details looking for. imagine have vmusercreate form creates user. test case can create user . to automatically test without role, have use following selector: .wrapper > .wrapper > .wrapper > .submit-button the test extremely brittle (will break lot). if use roles can use [role="vmusercreateform"] .submit-button selector. many folds less brittle. so basically, i'm ...
Read more

Add new key value to json node in java -

i have json file : { "id":1, "name":"abc", "addressdetails": { "city":"newyork" } } i wanted add 1 more key-value ("pincode" : "414141") node 'addressdetails'. i tried using : objectmapper mapper = new objectmapper(); jsonnode root = mapper.readtree(new file("d://test.json")); objectnode node = mapper.createobjectnode(); node.with("addressdetails").put("pincode", "414141"); but it's not getting added, there way can ? you can try you should modify file path objectmapper mapper = new objectmapper(); objectnode nodes = mapper.readvalue(new file("d:\\test.txt"), objectnode.class); nodes.with("addressdetails").put("pincode", "414141"); mapper.writer().writevalue(new file("d:\\test.txt"), nodes);
Read more