Three methods for creating multithreading in iOS and three methods for creating multithreading in ios

Three methods for creating multithreading in iOS and three methods for creating multithreading in ios

(1) // create a thread using the NSObject method </strong> </span> // (this method automatically opens up a background thread, parameter 1: the method executed in this background thread. Parameter 2: used to pass the parameter) [self defined mselectorinbackground: @ selector (banZhuanPlus) withObject: nil]; (2) // create a thread through NSThread (parameter 1: Method executor; parameter 2: method executed in the thread; parameter 3: used to pass Parameters) // Step 1: create thread NSThread * thread = [[NSThread alloc] initWithTarget: self selector: @ selector (banZhuanPlus) object: nil]; // Step 2: Execute [thread start]; [thread release]; (3) // NSOperation is an operation unit used to execute methods. It is an abstract class and must be subclass or use a subclass created by the system (NSInvocationOperation or NSBlockOperation) // NSOperation is the smallest operating unit; it can be executed only once; // NSInvocationOperation Step 1: Create NSInvocationOperation * invocation = [[NSInvocationOperation alloc] invocation: self selector: @ selector (banZhuanPlus) object: nil]; // Step 2: (do not add to the queue if not set) execute // [invocation start] in the main thread; // NSBlockOperation Step 1: create NSBlockOperation * block = [NSBlockOperation blockOperationWithBlock: ^ {[self banZhuanPlus];}]; // Step 2: Execute (executed in the main thread) // [block start]; // if it is added to the queue, do not start it. // This queue will automatically create an auxiliary thread for us. // In this queue, only NSOperation and subclass objects can be added; NSOperationQueue * queue = [[NSOperationQueue alloc] init]; [queue setMaxConcurrentOperationCount: 2]; // sets the maximum number of parallel rows; [queue addOperation: block]; // The operation queue will be executed as long as it is added to the queue; [queue addOperation: invocation]; // queue: first-in-first-out // Stack: advanced post-release // The serial and parallel tasks involved in the queue // serial: Only one task can be executed at a time // parallel: multiple tasks can be executed at a time (during full-disk replication, note that none of the annotations are integrated)

How to implement multiple threads in iOS

You asked the wrong question ~~ IOS is Object-C, not JAVA
 
How to Create Multithreading

The first method inherits the Thread, and the second method implements Runnable.
Public Class Threadone extends Thread {
Public void run () {// your implementation code}
}

Public class Threadtwo implements Runnable {
Public void run () {// your implementation code}
}
These two methods are called:
Public class {
Public static void main (String [] args ){
// The first call Method
Threadone one = new Threadone ();
One. start ();

// Method 2
Theadtwo two = new Threadtwo ();
Thread thread = new Thread (two );
Thread. start ();

}
}