I have built openCV to get opencv2.framework. I added this to my xcode iOS project by going to "build phases->Link Binary With Libraries", then tried to include "opencv2/opencv.hpp" in my project.
I get the error "opencv2/opencv.hpp" not found. But the file exists in the framework. I have tried to find a solution online but nothing has worked for me.
The file I'm trying to include it in is a .mm file. I have made "compile sources as" objective-c++. Any help would be great.
What worked for me was very simple:
*NOTE THE DIFFERENCE FOR IOS vs. OS X PROJECTS
FOR IOS:
Put the opencv download (for 3.0.0 it is just a drag and drop kind of thing) into the project specific Xcode folder. Then set the Frame Search Paths to $(PROJECT_DIR). The Frame Search Path is located under the Build Settings. No other paths need to be set.
Lastly, right click in the navigator pane and click "Add Files to..." in order to add in the opencv library from the project folder.
FOR OSX:
check out Tim's tutorial: https://www.youtube.com/watch?v=OVSPfUmNyOw
I solve the problem by adding to the FRAMEWORK_SEARCH_PATHS the absolute path were I had the framework I needed to use:
You should use your own path obviously. ;-)
Took me 4 hours to figure this out. This is how I got this to work :
Along with the opencv framework add the following frameworks in the build phases:
Accelerate, AssetsLibrary, AVFoundation
, CoreGraphics
, CoreImage
, CoreMedia
, CoreVideo
, QuartzCore
, UIKit
, Foundation.
Then, in the .pch file add these lines before UIKit and Foundation imports :
#ifdef __cplusplus
#import <opencv2/opencv.hpp>
#endif
In my case the symbolic links to the header files were broken. This was caused by cloning the following great example project:
https://github.com/BloodAxe/OpenCV-Tutorial
In the cloned project, the header files were not reachable anymore. After reimporting the opencv2.framework from the official opencv ios download site (OpenCV for iOS), the headers were available again. XCode should look as follows:
The following is a screenshot of a Xcode project with broken headers.
With broken header files, the xcode project looks as follows:
Make sure in Build Settings for the Target, you have the Framework Search Path in the Search Paths section set to the correct path to where your framework is located in your directory. You can do this by clicking to the right of Framework Search Path in the white space, click the + sign and add $(PROJECT_DIR) then click + again and add $(inherited). Make sure the framework is located in your main directory for your project at hand. This worked for me, as I encountered the same problem.
Hope this helps!
I used openCV in my project and implementing it with cocoapods was impossible because version of library was too old, so i decided to implement it as static library. create folder in your project and add library there, in build settings find library and framework search path and add link to your openCV folder. It will work without any error. Also you should add openCV header file in prefixPatch.
More Detail Instruction 100% Works:
1) Download framework from official website: OpenCV
2) In Project Directory create folder named: External_SDK
3) Put Opencv framework inside this folder and drag&drop it in Xcode Project (Folder) with Target Membership of your App (Not App_test).
4) In Xcode Project search for yourPrefixHeaderFileName.pch and in the top of the file add this lines:
#ifdef __cplusplus
#import <opencv2/opencv.hpp>
#endif
5) after that you should import or include it in .h file, why include? because it's CPP library. If you want to access library with import keywoard than you should do like this: #import <EXAMPLE>
6) In build settings search for library and framework search path and add link to your EXTERNAL_SDK folder. To read framework directly from your folder. Find and change ALWAYS_SEARCH_USER_PATHS = YES
and in HEADER_SEARCH_PATHS add $(inherited) and /usr/include/FRAMEWORK_PATH
Hope this answer will help someone.
And the best practice is to call
#include <opencv2/highgui/highgui.hpp>
#include <opencv2/core/core.hpp>
Only header files.
From my experience, it is not necessary to add so many other frameworks. Instead, only need opencv2 and add "#import " in prefixheader.pch
The thing is that MUST set correct Framework Search Paths as mentioned above unless opencv2 framework folder is in your project directory.
Notice: don't set wrong location in Framework Search Paths as there are two "YourProjectName". Set the 1st one (belongs to TARGETS), not the 2nd one(belongs to PROJECT). I made the mistake.
Here is my answer for this.
Environment: XCode 8.1
Download page: http://opencv.org/downloads.html. Choose any link for iOS.
Important step: while downloading opencv2.framework, you must use ".zip" format, not ".framework" format, afterwards, unzip it to opencv2.framework. It is weird, but it should work. Meanwhile, you have to rename it to opencv2.framework if the unzipped one is not.
just drag and drop the framework to your iOS project. No any settings are required. You could refer to this for testing : www.youtube.com/watch?v=ywUBHqxwM5Q.
I ran into some issues when I went to Target-->Build Phases-->Link Binary With Libraries. When I added opencv2.framework from there, my app would not launch.
Instead, I just dragged and dropped the framework under the directory "Frameworks" in XCode and that worked. I didn't change anything else.
Related
I am developing a framework for my obj-c iOS app.
I followed this tutorial: https://www.raywenderlich.com/65964/create-a-framework-for-ios
My framework files builds correctly and I can import it into my sample project and it builds correctly. But my project doesn't perform as expected.
When I did deeper into my framework headers, I find my problem.
Certain header files allow me to CMD-Click on the imports to view the corresponding header files in my project.
So for example:
In TestFile.h, I have: #import <Framework/SomeFile.h>, I can CMD-Click on this grand and I get linked to SomeFile.h
In TestFile2.h, I also have: #import <Framework/SomeFile.h>. When I CMD-Click on this, I get the Question Mark symbol indicating that the file isn't found.
In my Framework Project, I have a directory structure like so:
FrameworkProj.xcodeproj
->FrameworkProj
->FrameworkHeaders.h
->Folder
->some files
->some folders
->Folder
I'm wondering if I haven't set a flag in my Build Settings that doesn't recursively link the files to my compiled framework, but I'm wondering why can I see the files in my headers files if this is the case.
Thanks very much!
May seem stupid but I solved this problem with a single line.
I needed to include -all_load in Target > Build Settings > Other Linker Flags
As a beginner in ObjectiveC I need some help.
I'm working on a phonegap plugin for IOS (so, written with objective C). I use some open source code but I got an error with an .h import.
My architecture look like:
myFmk.framework/
myFmk.framework/ABCDE/myFmk.h <== in a sub folder
myFmk.framework/myFmk <=== this is a file
myPlugin.h
myPlugin.m
In myPlugin.h I have #import and in "myFmk.framework/myFmk" file I have only one line "ABCDE/".
I thought that this file do a redirection of the absolute import (with brackets) but my complier told me that "myFmk/myFmk.h" is not found.
I tried to find some documentation about this feature but I wasn't able to find its name... do you have this documentation or the feature name?
Thks.
Is the framework added using a cocoapod? If not, did you follow the instructions properly for adding it to your project? It would probably help if you posted the framework you are experiencing problems with.
If this is a framework that is added to your project properly and you are unable to import there are a few things you should check. First, go to your project settings (click on the project at the very top of your file tree in the left column) and then look for "linked libraries". See if the library is listed there. If not click the + and try to add it.
If this framework was added via cocoapods another thing to check is search your file structure for libPods.a. If it is red, I find sometimes it is helpful to delete it, close the project and run pod install again.
Also if you installed the project via cocoapods remember to open the workspace and not the old xcode project file.
I have also experienced this problem when my header search paths and other linker flag paths were wrong. Linker Flags should be $inherited if this is a cocoapod. In my projects most Header search paths are $inherited too.
If none of this is helpful please provide more information such as how this framework was added to your project and what the framework is. Also let us know if you get any error messages.
I'm trying to integrate UrbanAirShip in my application following these steps .
This is what i've done:
1) I've Unziped the framework in the Project folder so that I have the Airship folder at the same level of other file of my project.
2) I've added the path ./Airship/** to my Header search Paths.
I've also tried with ../Airship/** but it doesn't work.
3) I try to include the right headers
#import "UAirship.h"
#import "UAConfig.h"
#import "UAPush.h"
But xcode complains... saying 'UAirship.h' file not found.
What I'm doing wrong? Have I to include the files into the project?
Neither ./ or ../ worked for me in the Header Search Paths. I ended up using this:
$(PROJECT_DIR)/Airship
Airship folder is in same level as the project.
You mistyped the path to add in the Header Search Paths (forgot one ".") :
./Airship/**
Should be :
../Airship/**
Did you do the following step:
Link against the static library.
Add the libUAirship.a file to the “Link Binary With Libraries” section in the Build Phases tab for your target.
May not be applicable all of two years later, but I encountered a very similar problem today and solved it by using the CocoaPods version of the framework found here:
https://cocoapods.org/pods/UrbanAirship-iOS-SDK
After running pod install, I added the following paths to my Header Search Paths under target project > build settings:
It seemed redundant to me to add both paths, but without the subfolders at /** the AirshipLib.h file wasn't able to locate its dependancies, and without the main folder my Bridging-Header.h file wasn't able to locate AirshipLib.h
Luckily enough I'm using some old Objective-C files from our codebase and incorporating them into a new Swift app, so I already had a Bridging-Header.h file, but if you needed to create one you can find instructions here:
https://developer.apple.com/library/ios/documentation/Swift/Conceptual/BuildingCocoaApps/MixandMatch.html
Finally, I added the following to my Bridging-Header.h file:
#import "AirshipLib.h"
No issues on build and everything from the framework can be easily referenced directly in my files.
I downloaded MapBox example from github using the following
git clone --recursive https://github.com/mapbox/mapbox-ios-example.git
Which downloaded it including all dependencies. Now I'm trying to create a separate project and include MapBox DSK as it was in that example. I tried creating workspace then creating a single view project then add new file and select .xcodepro for the MapBox DSK but didn't work when I tried importing MapBox.h file. I never tried importing 3rd parties API before and a bit not sure how I can do that correctly. Any Idea how I can accomplish that ?
Thanks in Advance
Just try:
#import <Mapbox/Mapbox.h>
instead of just importing Mapbox.h as suggested here:
https://www.mapbox.com/blog/ios-sdk-framework
You simply drag the Mapbox-ios-sdk project file from Finder to the files pane in Xcode.
And then click the project in Xcode files pane, Target-->Build Settings. Search for "User Header Search Paths". Specify where the MapBox sdk is located.
What I do is I put the MapBox-iOS-sdk in my project directory. And I set the path as $(SRCROOT) and make sure to set it as recursive.
While you're at it also make sure -ObjC and -all_load are set in Other linker flags.
That only helps you reference the .h files, to link, also under Build Setting, Link Binary with Libraries you need libMapBox.a.
If there is a MapBox.bundle (as in the latest development branch) in the group and files pane, you want to drag that into Target->Build phases->Copy bundle resources as well. (The add button doesn't work for me.)
I think the best way is to look at mapbox-ios-example provided by MapBox and try to replicate all dependencies into your own project.
A bit late but I did it like it was explained here: http://mapbox.com/mapbox-ios-sdk/#binary.
Not messing around with git, just dragging things into your project, easy!
I think problem here is he couldn't find a specific 'file' that was titled "MapBox.Framework" inside the folder of resources downloaded from Map Box, however what you actually need to do is copy that whole folder, which is titled "MapBox.Framework" into the frameworks section. I think the confusion was that the main folder that needs to be copied doesn't look like the yellow framework icon until you copy that folder into Xcode's frameworks section.
I'm trying to add the openjpeg library to my XCode 4 project so that I can compress images taken by the iPhone's camera to jpeg2000.
I built the static library (libopenjpeg.a) using Cmake on OS/X. (I'm guessing this may have been the first error, that it needs to be built by XCode so it's built for iPhone architecture and not OS X).
I have the library added in the Link Binary with Libraries of my target.
The project builds successfully but I can't seem to import any of the headers from the library into any of my Objective-C classes. I've tried manually adding the folder that contains the libopenjpeg header files to the User Header Search Path but that did not seem to do anything.
Any suggestions?
for the simplest solution
Import the head files to you project's source.
You can still build it on the command-line with CMake, you'd just have to modify the CMakeLists.txt file so the right flags are passed when compiling.
However as Gavin indicates, it may be simpler just to drag the header and source files from the library into your Xcode project, and forego the building of a static library.