键盘收起
[[[UIApplication sharedApplication] keyWindow] endEditing:YES];
快速删除所有子控件
[self.view.subviews makeObjectsPerformSelector:@selector(removeFromSuperview)];
UIView设置 部分圆角
-(void)setTopLeftTopRightCornerRadius:(float)radius{
//设置所需的圆角位置以及大小
UIBezierPath *maskPath = [UIBezierPath bezierPathWithRoundedRect:self.bounds
byRoundingCorners:UIRectCornerTopLeft | UIRectCornerTopRight
cornerRadii:CGSizeMake(radius, radius)];
CAShapeLayer *maskLayer = [[CAShapeLayer alloc] init];
maskLayer.frame = self.bounds;
maskLayer.path = maskPath.CGPath;
self.layer.mask = maskLayer;
}
采用图片作backgroundColor
// 有特殊效果的图片
_View.backgroundColor = [UIColor colorWithPatternImage:[UIImage imageNamed:@"background"]];
view添加虚线框
CAShapeLayer *border = [CAShapeLayer layer];
border.strokeColor = [UIColor colorWithRed:67/255.0f green:37/255.0f blue:83/255.0f alpha:1].CGColor;
border.fillColor = nil;
border.lineDashPattern = @[@4, @2];
border.path = [UIBezierPath bezierPathWithRect:view.bounds].CGPath;
border.frame = view.bounds;
[view.layer addSublayer:border];
圆角
CAShapeLayer *border = [CAShapeLayer layer];
border.strokeColor = [UIColor redColor].CGColor; //虚线的颜色
border.fillColor = nil; //填充的颜色
UIBezierPath *path = [UIBezierPath bezierPathWithRoundedRect:self.lineButton.bounds cornerRadius:5];
border.path = path.CGPath; //设置路径
border.frame = self.lineButton.bounds;
border.lineWidth = 1.f; //虚线的宽度
//设置线条的样式
// border.lineCap = @"square";
border.lineDashPattern = @[@4, @2]; //虚线的间隔
self.lineButton.layer.cornerRadius = 5.f;
self.lineButton.layer.masksToBounds = YES;
[self.lineButton.layer addSublayer:border];
移除边框
[border removeFromSuperlayer];
判断View是否某个View的子视图
BOOL isView = [textView isDescendantOfView:self.view];
子控件超出时无法点击
- (UIView *)hitTest:(CGPoint)point withEvent:(UIEvent *)event {
UIView *view = [super hitTest:point withEvent:event];
if (view == nil) {
//将坐标由当前视图发送到 指定视图 fromView是无法响应的范围小父视图
CGPoint stationPoint = [_stationTypeChooseView.tableView convertPoint:point fromView:self];
if (CGRectContainsPoint(_stationTypeChooseView.tableView.bounds, stationPoint))
view = _stationTypeChooseView.tableView;
}
return view;
}
点击响应是从从底部往上依次传递的,当遇到其中一个无法传递,那么便跳过它,传递给下一个能传递的或者能响应的。
设置label的旋转角度
label.transform = CGAffineTransformMakeRotation(0.1);
常见控件的监听:
1.只要控件是继承UIControl就有addTarget监听方法,如,按钮监听点击事件:
[btn addTarget:self action:@selector(clickbtn:) forControlEvents:UIControlEventTouchUpInside];
其中clickbtn:为点击事件发生后所要执行的方法(可自定义)。
位置frame、bounds、center概念区分
frame:以父控件左上角为坐标原点,在其父控件中的位置和尺寸。
bounds:以自己左上角为坐标原点(x=0,y=0),控件的位置和尺寸。
center:以父控件的左上角为坐标原点,其控件中点的位置。
其他
http://blog.csdn.net/deft_mkjing/article/details/52048077
图片轮播器的使用
http://blog.csdn.net/lurenjia_kb/article/details/51567072
http://blog.csdn.net/zhengyanfeng1989/article/details/51508280
网友评论