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How do I check if myVC (the parent who created closure) is still alive before calling?
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| class Example { | |
| var callbackRef: Closure? | |
| var timer: Timer? | |
| var incrementer: Int = 1 | |
| func test(repeating: Bool, callback: @escaping Closure) { | |
| callbackRef = callback | |
| _ = Timer.scheduledTimer(withTimeInterval: 2.0, repeats: true, block: { [unowned self] | |
| timer in | |
| self.newTest(callback: callback) | |
| }) | |
| } | |
| func newTest(callback: Closure) { | |
| callback(true, self.incrementer) | |
| self.incrementer += 1 | |
| } | |
| } | |
| class TestExample { | |
| let ex: Example = Example() | |
| func doSomething(repeatIt: Bool, callback: @escaping Closure1) { | |
| print("repeatIt") | |
| ex.test(repeating: repeatIt, callback: { | |
| repeating, value in | |
| callback("Printing \(value)") | |
| }) | |
| } | |
| } | |
| class MyViewController { | |
| init() { | |
| let test: TestExample = TestExample() | |
| test.doSomething(repeatIt: true, callback: { | |
| response in | |
| print("---->> \(response)") | |
| }) | |
| } | |
| } | |
| /* | |
| let myVC = MyViewController() | |
| // do something | |
| myVC = nil // After release of myVC object closure crashes... | |
| ***** How do I check if myVC (the parent who created closure) is still alive? ***** | |
| */ |
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