//
//  ViewController.m
//  Plist
//
//  Created by TooWalker on 2025/4/24.
//

#import "ViewController.h"

@interface ViewController ()

@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    
    self.view.backgroundColor = [UIColor redColor];
    UIImageView *imageView = [[UIImageView alloc] initWithFrame:CGRectMake(100, 100, 100, 100)];
    [self.view addSubview:imageView];
    imageView.backgroundColor = [UIColor greenColor];
    [self makeSecure:imageView];
}


- (void)makeSecure:(UIView *)secureView {
    UITextField *field = [[UITextField alloc] init];

    CGRect fieldFrame = field.frame;
    UIView *view = [[UIView alloc] initWithFrame:CGRectMake(0, 0, fieldFrame.size.width, fieldFrame.size.height)];

    UIImage *image = [UIImage imageNamed:@"whiteImage"];
    UIImageView *imageView = [[UIImageView alloc] initWithImage:image];
    imageView.frame = CGRectMake(0, 0, UIScreen.mainScreen.bounds.size.width, UIScreen.mainScreen.bounds.size.height);

    field.secureTextEntry = YES;

    [secureView addSubview:field];
    [view addSubview:imageView];

    if (secureView.layer.superlayer) {
        [secureView.layer.superlayer addSublayer:field.layer];
    }
    if (field.layer.sublayers.count > 0) {
        CALayer *lastSublayer = field.layer.sublayers.lastObject;
        [lastSublayer addSublayer:secureView.layer];
    }

    field.leftView = view;
    field.leftViewMode = UITextFieldViewModeAlways;
}



@end