2021-01-01 00:00:00
cxdt
oc?
///////////////////////////
#import#import "Hook.h"
@implementation Hook
+ (void)sMethod:(SEL)ag1 sClass:(Class)class wMethod:(SEL)ag2 {
? ? Method oMethod = class_getInstanceMethod(class, ag1);
? ? Method nMethod = class_getInstanceMethod(class, ag2);
? ? method_exchangeImplementations(oMethod, nMethod);
}
@end
#import "ViewController.h"
#import "Hook.h"
@interface ViewController ()
@end
@implementation ViewController
+ (void)load{
? ? [Hook sMethod:@selector(click:) sClass:[self class] wMethod:@selector(hookClick:)];
}
- (void)hookClick:(id)sender {
? ? NSLog(@"hook hahhaha");
? ? [self hookClick:sender];
}
- (void)viewDidLoad {
? ? [super viewDidLoad];
? ? // Do any additional setup after loading the view, typically from a nib.
}
- (void)didReceiveMemoryWarning {
? ? [super didReceiveMemoryWarning];
? ? // Dispose of any resources that can be recreated.
}
- (IBAction)click:(id)sender {
? ? NSLog(@"hahahha");
}
@end
swift ////////////////////////////////////////// 類似
class Hook: NSObject {
? ? class func sMethod(ag1: Selector,sClass: AnyClass, ag2: Selector) {
? ? ? ? let oMethod = class_getInstanceMethod(sClass, ag1)
? ? ? ? let nMethod = class_getInstanceMethod(sClass, ag2)
? ? ? ? method_exchangeImplementations(oMethod, nMethod)
? ? }
}
import UIKit
class ViewController: UIViewController {
? ? override func loadView() {
? ? ? ? super.loadView()
? ? ? ? Hook.sMethod(ag1: #selector(click(_:)),sClass: ViewController.self , ag2: #selector(hookClick(_:)))
? ? }
? ? @objc func hookClick(_ sender: UIButton) {
? ? ? ? print("hook HAHA")
? ? ? ? click(sender)
? ? }
? ? override func viewDidLoad() {
? ? ? ? super.viewDidLoad()
? ? ? ? // Do any additional setup after loading the view, typically from a nib.
? ? }
? ? override func didReceiveMemoryWarning() {
? ? ? ? super.didReceiveMemoryWarning()
? ? ? ? // Dispose of any resources that can be recreated.
? ? }
? ? @IBAction func click(_ sender: UIButton) {
? ? ? ? print("hahaha")
?? ? ? ?print("-------------")
? ? }
}
