看到有个app上面有个浮动的可以随意拖动的漂浮控件
想了下可以用UIButton, button设置要显示的图片, 然后通过UIPanGestureRecognizer来实现调整位置
上代码:
- (void)viewDidLoad {
[super viewDidLoad];
//初始化button
_button = [[UIButton alloc] initWithFrame:CGRectMake(0, 0, 100, 100)];
_button.backgroundColor = [UIColor redColor];
_button.layer.cornerRadius = 50;
_button.layer.masksToBounds = YES;
_button.center = self.view.center;
[self.view addSubview:_button];
UIPanGestureRecognizer *panGesture = [[UIPanGestureRecognizer alloc] initWithTarget:self action:@selector(handlePanGesture:)];
[self.button addGestureRecognizer:panGesture];
}
- (void)handlePanGesture: (UIPanGestureRecognizer *)recognizer {
CGPoint translation = [recognizer translationInView:self.view];
recognizer.view.center = CGPointMake(recognizer.view.center.x + translation.x,
recognizer.view.center.y + translation.y);
[recognizer setTranslation:CGPointMake(0, 0) inView:self.view];
}
