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iOS Implementing Designs for iPhone Implementing Custom Login and Sign Up Screens Getting up to Speed

when i download and run this app on my simulator it it shows me 6 errors. Please help !


6 Answers


I take it you've downloaded the project files for the Ribbit app and opened them into Xcode; that right?

What are the errors you are getting? Again, I assume these are compiler errors - are they 'red' ones which prevent a build? Can you do a screen grab of them - (press Cmd + 4 to show all the errors in the left pane).

With some more info, we may be able to get this fixed for you.


linker command failed with exit code 1 (use -v to see invocation)

linker command failed with exit code 1 (use -v to see invocation)

That could be all sorts of issues but the compiler isn't happy about something. The error may be hidden in the text that follows what you've posted. It might be worth posting the rest of it. I've googled it and the suggestions are as follows:

I suggest trying a clean first, try that from the Product menu.

Then have a look at the Build Phases. Click on the project name at the top of the left pane. Then go to the Build Phases tab. Open up Compile Sources and check there are no duplicate entries. Delete duplicates.

Check your #import statements, make sure they all import .h files, not .m.

What part of the project have you reached? Have you just added a new class?

Hope that helps - else let us know what you get.


This is really old, but anyone else having the issue, it could be that the libraries used in this project aren't being "seen" by the compiler.

I done any thing but it not work, I didn't find anything duplicate in Compile Sources and #import statements always import .h file. Please help me!

What errors are you getting for this?


Because I can not attack image in this comment so please see error blow link


I'd have a read through this post and Google the error to see what advice is out there.