Build and run Disabled in xcode

There are some applications which shows Build and run icon disabled which stops me from running the application.It does not happen to all applications but on a few . It mainly occurs to me in facebook applications and a few more applications.Can anybody have an idea what could be the problem ? I have tried everything from changing the build set开发者_如何学JAVAtings etc. but it does not work.

---

Need to fix the executable, it happens after renaming project.

Product > Scheme > Edit scheme..

Select

Run > Info

Set Executable is your app name, if selected None.

---

Try this, It's work for me.

Follow below steps to unable Build and Run in xcode

1) Go to

Product => Scheme => Edit scheme.

2) Select Run option and select info

3) In Executable if option is selected to None then change it to your app name

Hope this is help for some one.

---

That project appears to be the Sparrow audio project. It's not a stand-alone project you can run; it's a library, you need to be using it in another project to have anything to actually run.

The sparrow project includes a sample app called Scaffold which demonstrates the use of Sparrow. More info:

http://www.sparrow-framework.org/help/gettingstarted/

Also see:

http://www.sparrow-framework.org/help/documentation/

Note that you can still 'build'; it's just 'build and run' that can't be clicked.

---

I think those may be frameworks,static libraries. So the build and run option is disabled.

---

I think you might be creating plugin or frameworks or libraries (not an Application). So the "Build & Run" icon is DISABLED.(as answered by Chandan Shetty SP)

In order to enable the icon you need to specify the Application which use this plugin or framework or library whatever you are building.

To specify such application:

1. Rt. Click on "Executables" (in Xcode's Groups and Files panel)

2. Select Add > New Custom Executable

3. Then specify the name of application (just for display purpose) and specify the path of the application.

---

Go to the Project menu in the menubar and change the Active Target to the target of the actual app.