當鍵盤擋住了視圖的兩種解決方法

1.平移整個界面(不推薦)

- (BOOL)textFieldShouldBeginEditing:(UITextField *)textField{

    // 獲得textField座標和View的中間比較
    CGFloat height = self.labelTextViewAccount.center.y - self.view.frame.size.height / 2.0;

   // 如果大於0,說明鍵盤遮住了控件,就將整個界面向上平移
    if(height > 0){
        self.view.center = CGPointMake(self.view.center.x, self.view.center.y - height);
    }
    return YES;
}

2.使用動畫的方式移動控件(推薦)

  // 

    self.view.backgroundColor = [UIColor cyanColor];
    
    self.myView = [[UIView alloc] initWithFrame:CGRectMake(100, 600, 200, 50)];
    self.myView.backgroundColor = [UIColor yellowColor];
    [self.view addSubview:self.myView];
    
    
    self.textField= [[UITextField alloc] initWithFrame:CGRectMake(100, 100, 150, 50)];
    self.textField.backgroundColor = [UIColor yellowColor];
    [self.view addSubview:self.textField];

    // 監聽鍵盤的彈起和回收
    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyBoardWillAppear:) name:UIKeyboardWillShowNotification object:nil];
    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyBoardWillDiapper:) name:UIKeyboardWillHideNotification object:nil];
    

// 實現彈起和收縮方法
    // 鍵盤彈起的時候觸發的方法
- (void)keyBoardWillAppear:(NSNotification *)notification{
    NSLog(@"鍵盤彈起了");
    // 找到鍵盤的尺寸
    CGRect rect = [[[notification userInfo] objectForKey:UIKeyboardFrameBeginUserInfoKey] CGRectValue];
    // 整體打印結構體的方法
    NSLog(@"%@",NSStringFromCGRect(rect));
    
    // 用UIView的動畫,讓視圖隨鍵盤上移
    [UIView animateWithDuration:0.2 animations:^{
        self.myView.frame = CGRectMake(100, 600 - rect.size.height, 200, 50);
    }];
}
// 點擊空白處,回收鍵盤
- (void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event{
    [super touchesBegan:touches withEvent:event];
    
    [self.textField resignFirstResponder];
}
// 鍵盤迴收的時候觸發的方法
- (void)keyBoardWillDiapper:(NSNotification *)notification{
    NSLog(@"鍵盤迴收了");
    
    // 通過UIView動畫,讓視圖回收
    [UIView animateWithDuration:0.2 animations:^{
        self.myView.frame = CGRectMake(100, 600, 200, 50);
    }];
}