メイン ビューには、ラベルとボタンがあります。UILabel とボタンを含むサブビューを 1 つ追加しました。私がやりたいことは、2 つのボタンのうちの 1 つを押して、両方のビューで 2 つのラベルを更新することです。問題は、サブビューのボタンをクリックすると、サブビューのラベルのみが更新されることです。逆に、メイン ビューのラベルは、メイン ビューのボタンをクリックしたときにのみ変更されます。
他のビューの各 label.text を更新する方法を知りたいです。
前もって感謝します...
これが私のコードです。1.ViewController.h
#import <UIKit/UIKit.h>
#import "SubView.h"
@interface ViewController : UIViewController{
SubView *subView;
}
@property (weak, nonatomic) SubView *subView;
@property (retain, nonatomic) IBOutlet UILabel *amount;
@end
2.ViewController.m
#import "ViewController.h"
#import "SubView.h"
@interface ViewController ()
@end
@implementation ViewController
@synthesize subView=_subView;
@synthesize amount;
- (void)viewDidLoad
{
[super viewDidLoad];
subView = [[SubView alloc]initWithFrame:CGRectMake(10, 10, 300, 600)];
[self.view addSubview:subView];
amount = [[UILabel alloc]initWithFrame:CGRectMake(400, 400, 100, 50)];
amount.text = @"test in the main view";
[self.view addSubview:amount];
UIButton *btn = [UIButton buttonWithType:UIButtonTypeRoundedRect];
btn.frame = CGRectMake(400, 300, 40, 20);
btn.backgroundColor = [UIColor clearColor];
[btn addTarget:self action:@selector(labelChange:)
forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:btn]; // add a button in the main view
// Do any additional setup after loading the view, typically from a nib.
}
- (IBAction)labelChange:(id)sender{
amount.text = @"defaul label";
SubView *sv = [[SubView alloc]init];
sv.addObject2.text = @"label in the subview";
NSLog(@"sv.addObject2.text = %@",sv.addObject2);
}
- (void)viewDidUnload
{
[super viewDidUnload];
// Release any retained subviews of the main view.
}
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
return YES;
}
@end
3.SubView.h
#import <UIKit/UIKit.h>
@interface SubView : UIView {
UIButton *btn;
UILabel *label;
}
//@property (strong, nonatomic) UIView *view;
@property (weak, nonatomic) UIButton *btn;
@property (weak, nonatomic) UILabel *label;
- (UIButton *)addObject1;
- (UILabel *)addObject2;
@end
4.サブビュー.m
#import "SubView.h"
#import "ViewController.h"
@implementation SubView
@synthesize btn=_btn, label=_label;
//@synthesize view;
- (id)initWithFrame:(CGRect)frame
{
self = [super initWithFrame:frame];
//UIView *contentView = [[UIView alloc]initWithFrame:frame];
self.backgroundColor = [UIColor blackColor];
UIButton *object1 = [self addObject1];
UILabel *object2 = [self addObject2];
[self addSubview:object1];
[self addSubview:object2];
return self;
}
- (UIButton *)addObject1{
btn = [UIButton buttonWithType:UIButtonTypeRoundedRect];
btn.frame = CGRectMake(10, 10, 100, 20);
btn.backgroundColor = [UIColor clearColor];
[btn addTarget:self action:@selector(labelChange:) forControlEvents:UIControlEventTouchUpInside];
return btn;
}
- (IBAction)labelChange:(id)sender{
label.text = @"change the label in the subview";
ViewController *vc = [[ViewController alloc]init];
[vc.amount setText:@"change the label in the mainview"];
}
- (UILabel *)addObject2{
label = [[UILabel alloc]initWithFrame:CGRectMake(10, 50, 200, 50)];
[label setText: @"default"];
label.backgroundColor = [UIColor clearColor];
label.font = [UIFont fontWithName:@"Arial" size:12];
label.textColor = [UIColor whiteColor];
return label;
}
@end