UI常用控件总结(一)

UIView

    //设置view
    UIView *view = [[UIView alloc] initWithFrame:CGRectMake(0, 20, kWidth, 100)];
    //设置背景色
    view.backgroundColor = [UIColor lightGrayColor];
    //设置坐标跟大小
    view.frame = CGRectMake(0, 0, kWidth-20, 100);
    //设置大小(不管坐标是多少,位置永远固定不变,但该位置是它所特有的位置,并不是之前的位置)
    view.bounds = CGRectMake(0, 0, 200, 200);
    //超过边界隐藏,默认是不隐藏(隐藏谁即是谁的属性)
    view.clipsToBounds = YES;
    //获取frame  bounds
    CGRect frame = view.frame;
    CGRect bounds = view.bounds;
    NSLog(@"%@",NSStringFromCGRect(frame));
    NSLog(@"%@",NSStringFromCGRect(bounds));
    //设置tag值(只要继承UIView均可设置tag值)
    view.tag = 101;
    //设置圆角
    view.layer.cornerRadius = 10;
    //设置阴影颜色(不要忘掉.CGColor)
    view.layer.shadowColor = [UIColor blackColor].CGColor;
    //设置阴影的不透明度(0~1)
    view.layer.shadowOpacity = 1;
    //设置阴影的圆角
    view.layer.shadowRadius = 5;
    //设置阴影的大小(默认是(0,-3))
    view.layer.shadowOffset = CGSizeMake(5, 10);
    //设置边界
    view.layer.borderColor = [UIColor redColor].CGColor;
    //设置边界宽度
    view.layer.borderWidth = 2; 
    //添加
    [self.view addSubview:view];

• pragma mark 点击空白处进行的事件

-(void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event{

    //获取所有子视图(返回值是一个数组)
    NSArray *subViewsArray = [self.view subviews];
    NSLog(@"%@",subViewsArray);
    //取出所有子视图的最上面一个
    UIView *lastView = [subViewsArray lastObject];
    NSLog(@"%@",NSStringFromCGRect(lastView.frame));
    //将最上面一个移动到最后(即数组的第0个,谁是父视图谁调用)
    [self.view sendSubviewToBack:lastView];
    NSArray *array = [self.view subviews];
    NSLog(@"%@",array);
    //根据tag值调取视图(父视图调用)
    UIView *tagView = [self.view viewWithTag:101];
    //将视图隐藏的三种方法
    //1.改变透明度
    tagView.alpha = 0.5;
    //2.从父视图移除
    [self.view removeFromSuperview];
    //3.隐藏
    tagView.hidden = !tagView.hidden;

    //计时器的开启
    [NSTimer scheduledTimerWithTimeInterval:0.5 target:self selector:@selector(change) userInfo:nil repeats:YES];

}

UIButton

 　　//设置button
    UIButton *button = [[UIButton alloc] initWithFrame:CGRectMake(20, 20, 100, 50)];
    //设置按钮的圆角
    button.layer.cornerRadius = 0;
    //居中
    button.center = self.view.center;
    //设置颜色
    button.backgroundColor = [UIColor whiteColor];
    //设置图标(只有添加了图标或背景图片,才会有点击效果,并且该方法是以图标形式添加的)
    [button setImage:[UIImage imageNamed:@"channel_friend_love"] forState:UIControlStateNormal];
    [button setImage:[UIImage imageNamed:@"hongxin"] forState:UIControlStateSelected];
    //设置图标(该方法添加的是铺满的背景图)
    [button setBackgroundImage:[UIImage imageNamed:@"bthui2"] forState:UIControlStateNormal];
    //设置标题
    [button setTitle:@"UIControlStateNormal" forState:UIControlStateNormal];
    [button setTitle:@"UIControlStateSelected" forState:UIControlStateSelected];
    [button setTitle:@"UIControlStateDisabled" forState:UIControlStateDisabled];
    //设置字体的大小
    button.titleLabel.font = [UIFont systemFontOfSize:12];
    //设置标题颜色
    [button setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
    //标题水平对齐(对齐方式以此类推)
    [button setContentHorizontalAlignment:UIControlContentHorizontalAlignmentCenter];
    //移动图片(CGFloat top, left, bottom, right  在原有基础上增加或减少的相对于边缘的距离)
    [button setImageEdgeInsets:UIEdgeInsetsMake(10, 10, 0, 0)];
    //移动标题(CGFloat top, left, bottom, right  在原有基础上增加或减少的相对于边缘的距离)
    [button setTitleEdgeInsets:UIEdgeInsetsMake(10, -10, 0, 0)];
    //监视点击事件
//    [button addTarget:self action:@selector(click) forControlEvents:UIControlEventTouchUpInside];
    //添加
    [self.view addSubview:button];

• pragma mark 点击事件,控制器切换

-(void)click{
  //初始化控制器
  MyViewController *mVC = [MyViewController new];
  //控制器切换效果
  [mVC setModalTransitionStyle:UIModalTransitionStyleCoverVertical];
  [self presentViewController:mVC animated:YES completion:^{

  }];
}

• pragma mark 点击空白处,如果定时器对象为空,则重新启动定时器,如果定时器对象不为空,则让定时器对象失效(invalidate方法)

-(void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event{

    if (_timer == nil) {
        _timer = [NSTimer scheduledTimerWithTimeInterval:0.5 target:self selector:@selector(change) userInfo:nil repeats:YES];
    }else{
        [_timer invalidate];
        _timer = nil;
    }
}

UISlider

　　//设置slider(高度不起作用)
    UISlider *slider = [[UISlider alloc] initWithFrame:CGRectMake(0, 0, 200, 45)];
    //居中
    slider.center = self.view.center;
    //slider的默认范围是0~1,可通过value值来改变范围
    //设置最小值
    slider.minimumValue = 0;
    //设置最大值
    slider.maximumValue = 10;
    //设置当前值
    slider.value = 5;
    //设置圆点的颜色
    [slider setThumbTintColor:[UIColor redColor]];
    //设置圆点的图片
    [slider setThumbImage:[UIImage imageNamed:@"hongxin"] forState:UIControlStateNormal];
    //设置已跑轨道的颜色(同样也可设置图片)
    [slider setMinimumTrackTintColor:[UIColor blueColor]];
    //设置未跑轨道的颜色(同样也可设置图片)
    [slider setMaximumTrackTintColor:[UIColor redColor]];
    //添加
    [self.view addSubview:slider];
    //开始计时器,让进度条动起来
    [NSTimer scheduledTimerWithTimeInterval:1 target:self selector:@selector(move) userInfo:nil repeats:YES];

• pragma mark 改变进度值

-(void)move{

    _slider.value = _slider.value++;

}