incompatible pointer type

hi guys.

have code

code:

nsmutablestring *urlstring = urltextfield.text;  

and warning: incompatible pointer type initializing 'nsmutablestring *' expression of type 'nsstring *'

warning means , how fix it? note still run code , works should be.

 

you not copying string, pointer value. system recognizing trying assign pointer of of non-mutable string mutable string. doesn't make sense since if tried altering urlstring after assignment, you'd attempting alteration projectnametf.text.

can following casting rid of warning, isn't want.

code:

nsmutablestring *urlstring = (nsmutablestring* )projectnametf.text;

if plan manipulate urlstring, declaring mutable string suggests, should copy content of projectnametf.text urlstring variable. 1 of following 2 methods acceptable, depending on life of urlstring.

code:

         nsmutablestring *urlstring = [nsstring stringwithstring: projectnametf.text]; // non-retained      nsmutablestring *urlstring = [[nsstring alloc] initwithstring: projectnametf.text]; // retained 

 

Forums iPhone, iPad, and iPod Touch iOS Programming

• iPhone
• Mac OS & System Software
• iPad
• Apple Watch
• Notebooks
• iTunes
• Apple ID
• iCloud
• Desktop Computers
• Apple Music
• Professional Applications
• iPod
• iWork
• Apple TV
• iLife
• Wireless