How to print something to the console in Xcode

Question

How do you print something to the console of Xcode  and is it possible to view the Xcode console from the app itself   Thanks

User · Answer

3 ways to do this   In C Language  Command Line Tool  Works with Objective C  too   printf  Hello World      In Objective C   NSLog   Hello  World       In Objective C with variables   NSString   myString     Hello World   NSLog        myString     In the code with variables  the variable created with class  NSString was outputted be NSLog  The    represents text as a variable

User · Answer

Logan has put this perfectly  Potentially something worth pointing out also is that you can use  printf whatever you want to print     For example if you were printing a string   printf  hello

User · Answer

In some environments  NSLog   will be unresponsive   But there are other ways to get output     NSString  url     someurlstring   printf   s    url UTF8String      By using printf with the appropriate parameters  we can display things this way   This is the only way I have found to work on online Objective-C sandbox environments

User · Answer

Logan said it perfectly  but i would like to add an alternative here       if you want to view logs from just your application then you can make   a custom method that keeps saving the log to a file in documents   directory  amp  then you can view that log file from your application    There is one good advantage for developers of the app after the app has been released  amp  users are downloading it  Because your app will be able to send logs  amp  crash reports to the developers  of course with the permissions of the device user       amp  it ll be the way to improve your application   Let me know  To other SO users   if there is another way of doing the same thing   Like default Apple feature or something   Let me know if it helps or you want some more idea

User · Answer

You can also use breakpoints  Assuming the value you want is defined within the scope of your breakpoint you have 3 options    print it in console doing   po some paramter   Bare in mind in objective-c for properties you can t use self   po  someProperty po self someProperty    would not work   po stands for print object     Or can just use Xcode  Variable Views    See the image   I highly recommend seeing Debugging with Xcode from Apple     Or just hover over within your code  Like the image below

User · Answer

How to print   NSLog   Something To Print      Or  NSString   someString     Something To Print   NSLog        someString     For other types of variables  use   NSLog        someObject   NSLog    i   someInt   NSLog    f   someFloat       etc      Can you show it in phone   Not by default  but you could set up a display to show you   Update for Swift  print  Print this string   print  Print this   variable    print  Print this    variable  print variable

[objective-c] How to print something to the console in Xcode?

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