iOS學習-2.據網址顯示源碼，ios學習-2源碼

iOS學習-2.據網址顯示源碼，ios學習-2源碼

輸入網址，解出源碼，顯示label

我這裡是在第二個介面顯示的，用的屬性傳值。

A介面先從 storyboard 拖個 textfield 和一個 button

.m裡面button的方法

//按鈕點擊方法- (IBAction)Click:(id)sender {    //首碼    NSString *str1 = @"http://";    //把首碼加到你輸入的網址前    NSString *str2 = [str1 stringByAppendingString:_field.text];    //解碼    NSString *str = [NSString stringWithContentsOfURL:[NSURL URLWithString:str2] encoding:NSUTF8StringEncoding error:nil];    NSLog(@"%@",str);    SecondController *secondView = [[SecondController alloc]init];    //把解出來的字串賦給B介面的屬性    secondView.string = str;    //跳轉，我用的navgation跳的    [self.navigationController pushViewController:secondView animated:YES];}

B介面定義一個string用於接收

@property(nonatomic,copy)NSString *string;

.m

- (void)viewDidLoad {    [super viewDidLoad];        self.view.backgroundColor = [UIColor whiteColor];    UILabel *label= [[UILabel alloc]initWithFrame:CGRectMake(0, 64, self.view.bounds.size.width ,self.view.frame.size.height)];    [self.view addSubview:label];        label.numberOfLines = 0 ;        label.lineBreakMode = NSLineBreakByTruncatingTail;    //接收過來的值賦給label    label.text = _string;}