Q:how to declare a property of Byte[] in iOS?

Question

I have a method which need receive a Byte[] :

In the .h file:

- (void)setPC1_APPKEY:(Byte[] )pC1_APPKEY;

In the .m file:

I want to own a Byte[] property to save it.

But when I declare the property like this:

@property (nonatomic, assign) Byte PC1_APPKEY[];

It shows error: property cannot have array or function type'Byte[]'

And so I set it to attribute like this:

{
    Byte PC1_APPKEY[];
}

It shows error: Field has Incomplete type 'Byte[]'

How can I get the Byte[] ? thanks.

Answer 1

you can use Pointer like this

@property (nonatomic, assign) Byte *PC1_APPKEY;

all files

.h

//
//  ocViewController.h
//  testTableViewHeader
//
//  Created by 刷脸卡 on 10/11/16.
//  Copyright © 2016 曾祥林. All rights reserved.
//

#import <UIKit/UIKit.h>

@interface TestViewController : UIViewController
- (void)setPC1_APPKEY:(Byte[] )pC1_APPKEY;
@end

.m

//
//  ocViewController.m
//  testTableViewHeader
//
//  Created by 刷脸卡 on 10/11/16.
//  Copyright © 2016 曾祥林. All rights reserved.
//

#import "TestViewController.h"

@interface TestViewController ()
@property (nonatomic, assign) Byte *PC1_APPKEY;
@end

@implementation TestViewController

- (void)viewDidLoad {
    [super viewDidLoad];

    NSString *testString = @"1234567890";
    NSData *testData = [testString dataUsingEncoding: NSUTF8StringEncoding];
    self.PC1_APPKEY = (Byte *)[testData bytes];
    for(int i=0;i<[testData length];i++){
        printf("testByte = %d\n",self.PC1_APPKEY[i]);
    }
    // Do any additional setup after loading the view.
}

- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

-(void)setPC1_APPKEY:(Byte [])pC1_APPKEY{
    self.PC1_APPKEY = pC1_APPKEY;
}

@end