Set proxy process for iOS and proxy process for ios

Set proxy process for iOS and proxy process for ios

The process of setting proxy for iOS (taking the simulated button as an example)

1. Write Protocol

Create a new file named MyButton, which inherits from UIView and declares the myDelegate protocol in the file.

2. Write protocol Method

Add methods for declared protocols

3. Define a protocol-compliant attribute

The code for the first three steps is as follows:

1 # import <UIKit/UIKit. h> 2 @ class MyButton; 3 // Step 1: Write protocol 4 @ protocol myDelegate <NSObject> 5 // Step 2: Write protocol method (the parameter must be declared above: @ class MyButton;) 6-(void) changeColor :( MyButton *) myButton; 7 @ end 8 9 @ interface MyButton: UIView10 // Step 3: write a myDelegate attribute 11 @ property (nonatomic, assign) id <myDelegate> delegate; 12 13 @ end

 

4. Write a method to call the Protocol

Method for writing touchesBegan

5. Call Protocol Methods

Step 4:

1 // Step 4 Write the touchesBegan method 2-(void) touchesBegan :( NSSet <UITouch *> *) touches withEvent :( UIEvent *) event {3 // Step 5 call the Protocol Method 4 [_ delegate changeColor: self]; 5}

 

6. Compliance with the agreement

Enable the class to comply with the Protocol

1 // step 6 follows the Protocol 2 @ interface RootViewController: UIViewController <myDelegate>

 

7. Set proxy

Self. rootView. myButton. delegate = self;

8. Implementation Protocol

1 // method 2-(void) changeColor :( MyButton *) myButton {3 myButton. backgroundColor = [UIColor colorWithRed: arc4random () % 256/255. 0 green: arc4random () % 256/255. 0 blue: arc4random () % 256/255. 0 alpha: 1]; 4}