call a function using thread in xcode

Question

i have created a thread in xcode and i have given the function name to be called from that thread. but my problem is that the function name which is given to call is not being called(came to know when put a breakpoint in that function) code: ``` NSThread* myThread; [myThread start]; [self performSelector:@selector(func1:) onThread:myThread withObject:nil waitUntilDone:false] ``` and later i tried this one also: ``` NSThread* myThread = [[NSThread alloc] initWithTarget:self selector:@selector(func1:)object:nil]; [myThread start]; ``` above func1 is the name of the function to be called. so can any one please tell me how to create the thread and call func1 from there....

Accepted Answer

In your first code sample it doesn't look like you are actually creating a new thread. You create an empty `myThread` variable and then call `start` on it but this will just result in `start` being sent to `nil`. The empty thread variable is then sent to the `performSelector:onThread:withObject:waitUntilDone:` method which will presumably do nothing.

You will need to properly create a thread before you can actually run something on it using `performSelector:onThread:withObject:waitUntilDone:`.

Alternatively, it would be much easier, assuming you don't care which background thread the method runs on, to simply use `performSelectorInBackground:withObject:`. For example:

```
[self performSelectorInBackground:@selector(func1:) withObject:nil];
```

call a function using thread in xcode

Solution

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