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    <p>@Brad Smith's answer is not complete, and even is incorrect in some sense. We have to use <code>NSKeyedArchiver</code> and <code>NSKeyedUnarchiver</code> as follows:</p> <p>Make your class (for example in this case <code>Person</code>) to conform to protocol <code>NSCoding</code> and implement both the methods as:</p> <pre><code>- (id)initWithCoder:(NSCoder *)decoder { self = [super init]; if(self) { self.name = [decoder decodeObjectForKey:&lt;key_for_property_name&gt;]; // as height is a pointer *self.height = [decoder decodeFloatForKey:&lt;key_for_property_height&gt;]; self.age = [decoder decodeIntForKey:&lt;key_for_property_age&gt;]; } return self; } - (void)encodeWithCoder:(NSCoder *)encoder { [encoder encodeObject:self.name forKey:&lt;key_for_property_name&gt;]; //as height is a pointer [encoder encodeFloat:*self.height forKey:&lt;key_for_property_height&gt;] [encoder encodeInt:self.age forKey:&lt;key_for_property_age&gt;]; } </code></pre> <p>Using <code>NSUserDefaults</code></p> <pre><code>// Write to NSUserDefaults NSData *archivedObject = [NSKeyedArchiver archivedDataWithRootObject:&lt;your_class_object&gt;]; NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults]; [defaults setObject:archivedObject forKey:&lt;key_for_archived_object&gt;]; [defaults synchronize]; // Read from NSUserDefaults NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults]; NSData *archivedObject = [defaults objectForKey:&lt;key_for_archived_object&gt;]; &lt;your_class&gt; *obj = (&lt;your_class&gt; *)[NSKeyedUnarchiver unarchiveObjectWithData:archivedObject]; </code></pre>
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    1. COI wish I can upvote your answer to the top. Brad Smith is totally misleading.
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    2. COSo vote down @BredSmith as I did
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A row detail

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