这篇文章将为大家详细讲解有关iOS如何实现应用悬浮窗效果,小编觉得挺实用的,因此分享给大家做个参考,希望大家阅读完这篇文章后可以有所收获。
在一个app应用的最顶部添加一个悬浮窗,就像ios系统AssistiveTouch 可以左右滑动,但是最终会停在左边或右边。
在应用的视图的最顶层添加一个UIWindow,用这个UIWindow 充当悬浮窗,给UIWindow添加移动的手势监听,让悬浮窗随着手指移动,释放的时候,让它以动画的方式靠边
//悬浮窗测试 //创建一个悬浮窗口 mwindow = [[AssistiveTouch alloc]initWithFrame:CGRectMake(100, 200, 40, 40) imageName:@"1.png"]; //ios9 window要设置rootview 不然崩溃 UIViewController *controller = [[UIViewController alloc] init]; mwindow.rootViewController = controller; //展示悬浮窗。。 [self.window makeKeyAndVisible];
//添加移动的手势 UIPanGestureRecognizer *pan = [[UIPanGestureRecognizer alloc]initWithTarget:self action:@selector(locationChange:)]; pan.delaysTouchesBegan = YES; [self addGestureRecognizer:pan];
//改变位置 -(void)locationChange:(UIPanGestureRecognizer*)p { //[[UIApplication sharedApplication] keyWindow] CGPoint panPoint = [p locationInView:[[UIApplication sharedApplication] keyWindow]]; if(p.state == UIGestureRecognizerStateBegan) { [NSObject cancelPreviousPerformRequestsWithTarget:self selector:@selector(changeColor) object:nil]; _imageView.alpha = 0.8; } else if (p.state == UIGestureRecognizerStateEnded) { [self performSelector:@selector(changeColor) withObject:nil afterDelay:4.0]; } if(p.state == UIGestureRecognizerStateChanged) { self.center = CGPointMake(panPoint.x, panPoint.y); } else if(p.state == UIGestureRecognizerStateEnded) { if(panPoint.x <= kScreenWidth/2) { if(panPoint.y <= 40+HEIGHT/2 && panPoint.x >= 20+WIDTH/2) { [UIView animateWithDuration:0.2 animations:^{ self.center = CGPointMake(panPoint.x, HEIGHT/2); }]; } else if(panPoint.y >= kScreenHeight-HEIGHT/2-40 && panPoint.x >= 20+WIDTH/2) { [UIView animateWithDuration:0.2 animations:^{ self.center = CGPointMake(panPoint.x, kScreenHeight-HEIGHT/2); }]; } else if (panPoint.x < WIDTH/2+15 && panPoint.y > kScreenHeight-HEIGHT/2) { [UIView animateWithDuration:0.2 animations:^{ self.center = CGPointMake(WIDTH/2, kScreenHeight-HEIGHT/2); }]; } else { CGFloat pointy = panPoint.y < HEIGHT/2 ? HEIGHT/2 :panPoint.y; [UIView animateWithDuration:0.2 animations:^{ self.center = CGPointMake(WIDTH/2, pointy); }]; } } else if(panPoint.x > kScreenWidth/2) { if(panPoint.y <= 40+HEIGHT/2 && panPoint.x < kScreenWidth-WIDTH/2-20 ) { [UIView animateWithDuration:0.2 animations:^{ self.center = CGPointMake(panPoint.x, HEIGHT/2); }]; } else if(panPoint.y >= kScreenHeight-40-HEIGHT/2 && panPoint.x < kScreenWidth-WIDTH/2-20) { [UIView animateWithDuration:0.2 animations:^{ self.center = CGPointMake(panPoint.x, 480-HEIGHT/2); }]; } else if (panPoint.x > kScreenWidth-WIDTH/2-15 && panPoint.y < HEIGHT/2) { [UIView animateWithDuration:0.2 animations:^{ self.center = CGPointMake(kScreenWidth-WIDTH/2, HEIGHT/2); }]; } else { CGFloat pointy = panPoint.y > kScreenHeight-HEIGHT/2 ? kScreenHeight-HEIGHT/2 :panPoint.y; [UIView animateWithDuration:0.2 animations:^{ self.center = CGPointMake(320-WIDTH/2, pointy); }]; } } } }
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