iphone - iOS Camera Overlay Capture Image -

-

i facing real though issues. have studied couple of tutorial adding overlay in camera using uiimagepickercontroller , avfoundation. working fine me. can add overlay on camera using both. main concern extract part of image under overlay view when user hits scan button. having white view in overlay , button, image under white view should retrieved.

-(ibaction)cameraclicked:(id)sender {      overlayview *overlay = [[overlayview alloc] initwithframe:cgrectmake(0, 0, self.view.frame.size.width, self.view.frame.size.height)];      self.imagepickercontroller = [[uiimagepickercontroller alloc] init];     self.imagepickercontroller.delegate = self;      if ([uiimagepickercontroller      iscameradeviceavailable:uiimagepickercontrollercameradevicerear]) {         self.imagepickercontroller.sourcetype = uiimagepickercontrollersourcetypecamera;         self.imagepickercontroller.cameracapturemode =              uiimagepickercontrollercameracapturemodephoto;     }     else {         self.imagepickercontroller.sourcetype =             uiimagepickercontrollersourcetypesavedphotosalbum;     }      self.imagepickercontroller.showscameracontrols = no;     self.imagepickercontroller.navigationbarhidden = yes;           self.imagepickercontroller.toolbarhidden = yes;      self.imagepickercontroller.wantsfullscreenlayout = yes;     self.imagepickercontroller.cameraviewtransform =          cgaffinetransformscale(self.imagepickercontroller.cameraviewtransform,      camera_transform_x,camera_transform_y);     self.imagepickercontroller.cameraoverlayview = overlay;     [self presentviewcontroller:self.imagepickercontroller animated:yes          completion:nil]; }  - (void)imagepickercontroller:(uiimagepickercontroller *)picker didfinishpickingmediawithinfo:(nsdictionary *)info {     uiimage *image = [info objectforkey:uiimagepickercontrolleroriginalimage];      cgrect croprect;     uiimage *image = [info objectforkey:uiimagepickercontrolleroriginalimage];     uiimage *crosshair = [uiimage imagenamed:@"overlay.png"];      uigraphicsbeginimagecontext(cgsizemake(self.view.frame.size.width, self.view.frame.size.height));     [image drawinrect: cgrectmake(0, 0, self.view.frame.size.width, self.view.frame.size.height)];     uiimage *smallimage = uigraphicsgetimagefromcurrentimagecontext();     uigraphicsendimagecontext();      if(isios7)         croprect = cgrectmake(10, 440, crosshair.size.width, crosshair.size.height);     else         croprect = cgrectmake(10, 405, crosshair.size.width, crosshair.size.height);      cgimageref imageref = cgimagecreatewithimageinrect([smallimage cgimage], croprect);     uiimage *setimage = [uiimage imagewithcgimage:imageref];     self.finalimageview.image = setimage;      [self dismissviewcontrolleranimated:yes completion:nil]; }

try this... working..

  self.imagepickercontroller=nil;   self.imagepickercontroller = [[uiimagepickercontroller alloc] init];   self.imagepickercontroller.sourcetype = uiimagepickercontrollersourcetypecamera;   self.imagepickercontroller.delegate = self;   self.imagepickercontroller.allowsediting = no;   self.imagepickercontroller.showscameracontrols = no;

// create view overlay

 cgrect overlayrect = cgrectmake(0, 0, self.imagepickercontroller.view.frame.size.width,      self.imagepickercontroller.view.frame.size.height);      uiview *overlayview = [[uiview alloc] initwithframe:overlayrect];      btn_overlay = [uibutton buttonwithtype:uibuttontypecustom];     [btn_overlay setbackgroundimage:[uiimage imagenamed:@"imagenmae"] forstate:uicontrolstatenormal];     btn_overlay.frame = cgrectmake(80.0, 170, 150.0, 30.0);     btn_overlay.tag = 0;     [btn_overlay settitle:@"button title" forstate:uicontrolstatenormal];     [btn_overlay addtarget:self action:@selector(actinmethod:) forcontrolevents:uicontroleventtouchupinside];     [overlayview addsubview:btn_overlay];  [self.imagepickercontroller setcameraoverlayview:overlayview];     // display imagepicker     [self.navigationcontroller presentviewcontroller:self.imagepickercontroller animated:yes completion:nil];

Comments

Post a Comment

Popular posts from this blog

python - Subclassed QStyledItemDelegate ignores Stylesheet -

-
i'm trying subclass qstyleditemdelegate remove focus rectangle in qcombobox . even though i'm calling base implementation of paint function , nothing else, result different. looks if parts of style-sheet influence bounding box of item taken consideration. class pstyleditemdelegate(qstyleditemdelegate): def __init__(self, *args, **kwds): super(pstyleditemdelegate, self).__init__(*args, **kwds) def paint(self, *args, **kwargs): qstyleditemdelegate.paint(*args, **kwargs) what have paint unmodified qstyleditemdelegate ? as suggested tried replacing pyside pyqt4 , works, appears bug. update pyside 1.1.2 1.2.1 result same. unfortunately switch breaks other parts of code, if there no other suggestions i'm going accept answer. edit bug tracked here
Read more

java - HttpClient 3.1 Connection pooling vs HttpClient 4.3.2 -

-
i have used httpclient3.1(java) connection pooling below : import org.apache.commons.httpclient.httpclient; import org.apache.commons.httpclient.multithreadedhttpconnectionmanager; import org.apache.commons.httpclient.params.httpclientparams; import org.apache.commons.httpclient.params.httpmethodparams; import org.apache.log4j.logger; public class httpclientmanager { private static logger logger = logger.getlogger(httpclientmanager.class); private static multithreadedhttpconnectionmanager connectionmanager = new multithreadedhttpconnectionmanager(); private static httpclientparams clientparams = new httpclientparams(); static { try { clientparams.makelenient(); clientparams.setauthenticationpreemptive(false); clientparams.setparameter(httpmethodparams.so_timeout, new integer(30000)); // set so_timeout clientparams.setparameter(httpmethodparams.head_body_check_timeout, new integer(3000)); // head responses ...
Read more

node.js - StackOverflow API not returning JSON -

-
i using node.js script gather data stackoverflow. know responses gzipped, put code in should take care of that. script follows: var request = require('request'); var zlib = require('zlib'); function getstackoverflowresponse(url, callback){ request(url, {encoding: null}, function(err, response, body){ if(response.headers['content-encoding'] == 'gzip'){ zlib.gunzip(body, function(err, dezipped) { callback(dezipped); }); } else { callback(body); } }); } var url = "https://api.stackexchange.com/docs/questions#pagesize=2&order=desc&min=2014-01-04&max=2014-02-02&sort=activity&tagged=apigee&filter=default&site=stackoverflow&run=true"; getstackoverflowresponse(url, function(questions) { console.log(questions); }); instead of getting json output, i'm getting following response: buffer 0d 0a 0d 0a 0d 0a 0d 0a 3c 21 44 4f 43 54 59 50 45 20 48...
Read more