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176

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2

When I debug my application on device,it alert the info " Codesign error: no certificate was found in your keychain for the specified identifier "(null)"

A: 

All the applications are the same which installed from IDE.

I have no idea what you mean by this.
St3fan
This should be a comment, not an answer itself.
Greg Martin
A: 

You may not have an application identifier set. Make sure that in your Target Settings > Properties, you have a valid reverse DNS identifier (com.apple.myapp, for example) entered into your Identifier field. Also make sure your Code Signing Identity is set to the correct certificate (Target Settings > Build).

Ben Gottlieb