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POCalling method from principal class in objective-C
 

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    <p>I'm did functionality of timer out if User can't touch on screen for 10 minutes then my application directly goes on login screen. For above problem i use sample code from here <a href="https://github.com/B-Sides/ELCUIApplication" rel="nofollow noreferrer">https://github.com/B-Sides/ELCUIApplication</a> doing some changes in naming of class so my class is <code>PB_TIMER_UIApplication</code> instead of <code>ELCUIApplication</code>. I calling <code>PB_TIMER_UIApplication</code> class in main.m class it implementation as following,</p> <pre><code>return UIApplicationMain(argc, argv, NSStringFromClass([PB_TIMER_UIApplication class]), NSStringFromClass([AppDelegate class])); </code></pre> <p>I set principalClassName as a <code>PB_TIMER_UIApplication</code></p> <p>Now i create one property and instance method in <code>PB_TIMER_UIApplication</code> like following,</p> <pre><code>@interface PB_TIMER_UIApplication : UIApplication{ NSTimer *_idleTimer; } @property(nonatomic) int timerTimeOutIntervals; - (void)resetIdleTimer; </code></pre> <p>Now i want my application show alert before going login screen/timeout session. If alert button press OK then my timer again start for 10 second. That why i create an property for <code>timerTimeOutIntervals</code> and that property and <code>resetIdleTimer</code> instance method i want to call in throughout application. So i trying to access property/method as like Appdelegate call, <code>[[PB_TIMER_UIApplication sharedApplication] setTimerTimeOutIntervals:10];</code> but it show me static error ,</p> <p><img src="https://i.stack.imgur.com/9HqGC.png" alt="enter image description here"></p> <p>My question where i'm wrong and what to do for calling property of instance method from principle class?</p>
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