Detailed example of IOS obtaining app version number

Time：2022-5-25

Detailed example of IOS obtaining app version number

When I look at the code, I see a sentence for obtaining Version number of plist file 


labelVersion.text = [NSString stringWithFormat:@"v%@", [[NSBundle mainBundle] objectForInfoDictionaryKey:(NSString*)kCFBundleVersionKey]];

I’m interested in the latter parameter kcfbundleversionkey, which turns out to be CFBundle H has been set to a good attribute, and the following is the comment of this attribute 


const CFStringRef kCFBundleVersionKey;
  /* The version number of the bundle. For Mac OS 9 style version numbers (for example "2.5.3d5"), */
  /* clients can use CFBundleGetVersionNumber() instead of accessing this key directly since that */
  /* function will properly convert the version string into its compact integer representation. */

There are also many standard info beginning with kcfxxx Plist keys attribute. If you are interested, you can take a look at CFBundle h. Study their usage,

The above is a simple example of IOS obtaining app version number. There are many articles on IOS development on this site. You can refer to them. Thank you for reading. I hope it can help you. Thank you for your support to this site!

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