How to implement multithreading in IOS Nsthread

Benefits of using Multithreading:

1. Use multi-threading can take a long time in the program to put the task in the background to deal with, film, video download

2. Take advantage of multi-core processors to perform faster, more processes, and better user experiences for the system to run

Disadvantages of using Multithreading:

1. A large number of threads reduce the readability of the Code

2. More threads require more memory space

3. Be aware of thread safety issues when multiple threads are competing for a resource

Nsthread (two ways to create)

Pros: Nsthread than the other two lightweight

Cons: You need to manage the lifecycle of threads, thread synchronization, and the locking of data during thread synchronization has a certain overhead

Instance method -(ID) Initwithtarget: (ID) Target selector: (SEL) object: (id) argument;

Use:

Parameter resolution:

Selector: Thread execution method, this selector can only receive one parameter at most

Target:selector object sent by message

Argument: The only parameter passed to selector, or nil

class method + (void) Detachnewthreadselector: (SEL) Aselector totarget: (ID) target withobject: (id) argument;

Use:

Parameter resolution: Ibid.

How to implement multithreading in IOS Nsthread